Skip to main content

The effect of an antibiotic stewardship program on tigecycline use in a Tertiary Care Hospital, an intervention study



A drug-oriented antibiotic stewardship intervention targeting tigecycline utilization was launched at Makassed General Hospital, Beirut, Lebanon, in 2016 as a part of a comprehensive Antibiotic Stewardship Program (ASP). In this study, we evaluated the effect of this intervention on changing tigecycline prescription behavior in different types of infections, patient outcome and mortality, along with tigecycline drug use density, when compared to an earlier period before the initiation of ASP.


This is a retrospective chart review of all adult inpatients who received tigecycline for more than 72 h between Jan-2012 and Dec-2013 [period (P) 1 before ASP] and between Oct-2016 and Dec-2018 [period (P) 2 during ASP].


Tigecycline was administered to 153 patients during P1 and 116 patients during P2. The proportion of patients suffering from cancer, those requiring mechanical ventilation, and those with hemodynamic failure was significantly reduced between P1 and P2. The proportion of patients who received tigecycline for FDA-approved indications increased from 19% during P1 to 78% during P2 (P < 0.001). On the other hand, its use in off-label indications was restricted, including ventilator-associated pneumonia (26.1% in P1, 3.4% in P2, P < 0.001), hospital-acquired pneumonia (19.6% in P1, 5.2% in P2, P = 0.001), sepsis (9.2% in P1, 3% in P2, P = 0.028), and febrile neutropenia (15.7% in P1, 0.9% in P2, P < 0.001). The clinical success rate of tigecycline therapy showed an overall significant increase from 48.4% during P1 to 65.5% during P2 (P = 0.005) in the entire patient population. All-cause mortality in the tigecycline-treated patients decreased from 45.1% during P1 to 20.7% during P2 (P < 0.0001). In general, mean tigecycline consumption decreased by 55% between P1 and P2 (P < 0.0001).


The drug-oriented ASP intervention targeting tigecycline prescriptions improved its use and patient outcomes, where it helped curb the over-optimistic use of this drug in off-label indications where it is not a suitable treatment option.


Tigecycline was first introduced to the Lebanese pharmaceutical market in 2006. It has demonstrated promising in vitro activity against antibiotic-resistant Gram-negative bacteria, including extended spectrum beta-lactamase-producing Enterobacteriaceae, carbapenem-resistant Enterobacteriaceae, and extensively drug-resistant (XDR) Acinetobacter baumannii. It is also active against various Gram-positive organisms, including Staphylococcus aureus, streptococci, and enterococci [1,2,3].

Multi-drug-resistant (MDR) and XDR A. baumannii has spread in Lebanese hospitals since 2004, becoming one of the primary nosocomial pathogens that compromises the outcome of hospitalized patients [4,5,6,7,8]. A. baumannii has displayed in vitro resistance to all available antimicrobial classes across different Lebanese hospitals, except for tigecycline and colistimethate sodium [4,5,6,7,8]. Therefore, physicians use tigecycline whenever a MDR or XDR pathogen is suspected or proven to cause a serious infection.

A utilization review was performed among inpatients that received tigecycline in our facility between 2012 and 2013 [9]. The tigecycline clinical success rate reached 43.4% and total mortality was 45% [9]. Stratifying tigecycline use among different patient subgroups revealed that it was mostly prescribed for indications not approved by the US Food and Drug Administration (FDA) or the European Medicines Agency (EMA) (81%), specifically in critically ill patients [9]. Total mortality was significantly higher in severely ill patients and for off-label indications, such as nosocomial pneumonia, bacteremia, and sepsis [9].

These results indicated a need to improve tigecycline prescription procedures. Therefore, a drug-oriented antibiotic stewardship intervention was launched in our facility in 2016 as a part of a comprehensive “Handshake Antibiotic Stewardship Program” (ASP) [10]. The primary endpoints of the current study were to observe the intervention effects on:

  1. 1.

    Shifting tigecycline use from the clinically vulnerable patient population toward the less critical population by avoiding its use in patients with signs of clinical severity, like hemodynamic failure and in those on mechanical ventilation.

  2. 2.

    Limiting tigecycline use to complicated intra-abdominal infections (cIAI) and to complicated skin and soft tissue infections (cSSTI), paired with reduced tigecycline prescription for infections like ventilator-associated pneumonia (VAP), hospital-acquired pneumonia (HAP), and bacteremia.

  3. 3.

    Changes in total tigecycline consumption and prescription trends resulting from ASP team oversight and controlling therapy duration, when possible, for patients who received it.

The secondary aims of this study were to assess patient outcome and all-cause mortality in patients who received tigecycline before and during the ASP. We also compared bacterial flora isolated from patients treated with tigecycline before and during the ASP.


Setting and study design

This was a retrospective chart review conducted at Makassed General Hospital, a 186-bed University hospital in Beirut, Lebanon. This study included adult inpatients who received tigecycline for more than 72 h between January 2012 and December 2013 [period 1 (P1), before ASP] and October 2016 to December 2018 [period 2 (P2), during ASP]. The hospital Institutional Review Board approved this study.

The ASP was adopted by the hospital starting in September 2016 and was based on the “handshake” strategy of prospective audit and immediate feedback to prescribers. The aims were to decrease high-end antibiotic use, namely antipseudomonal carbapenems and colistimethate sodium, and to control tigecycline use based on its utilization review [9, 10].

Regarding tigecycline intervention, a workshop was conducted in our facility to target broad-spectrum antibiotic prescribers, including infectious disease specialists, pulmonologists, and intensivists. This workshop discussed the results of the previous tigecycline utilization review and evaluated and agreed upon a new tigecycline use protocol. This protocol essentially limited tigecycline prescription to FDA/EMA-approved indications, namely cIAI and cSSTI.

The ASP team was given the authority to modify the choice and duration of the prescribed antimicrobial therapy after discussing the patient management plan and corresponding treatment guidelines with prescribers during daily clinical rounds.

Data collection, definitions, and metrics for tigecycline use

The following information was collected during both periods: baseline demographic and clinical characteristics, indication for tigecycline therapy, tigecycline treatment strategy (empiric, targeted, monotherapy, or combination), duration of therapy, microbiological findings, clinical and microbiological outcomes, and all-cause mortality.

Monthly tigecycline use data were obtained from the hospital pharmacy. The World Health Organization (WHO) and Anatomical Therapeutic Chemical (ATC) classification systems were used to express data as WHO/ATC defined daily doses (DDD).

Tigecycline use density was measured as the number of DDD/1000 patient days (PD). The WHO definition was used to define tigecycline DDD as 0.1 g/day. The PD number was the number of patients present in any given location (e.g., hospital or ward) at a single time during a 24-h period [11]. We studied the quarterly change in tigecycline consumption levels and trends at P1 and P2.

Primary infections for which tigecycline was prescribed were defined according to clinical diagnostic criteria established by the U.S. Center for Disease Control and Prevention [12,13,14]. FDA- and EMA-approved indications for tigecycline were cSSTI and cIAI [15]. Off-label indications were HAP, VAP, urinary tract infection, diabetic ulcers, sepsis, bacteremia, and febrile neutropenia [15].

Empiric tigecycline use was defined as its administration to a patient with signs and symptoms of infection without a known bacterial isolate [9, 16]. Targeted therapy was defined as tigecycline administration in the presence of an identified organism [9, 16].

Clinical success was defined as an improvement in signs and symptoms of the primary infection treated by tigecycline, without the need to change the antibiotic regimen 72 h after starting tigecycline or without the need to restart other antibiotics within 72 h of discontinuing tigecycline [9, 17, 18]. The clinical success proportion was calculated as [9]:

$$({\text{Number}}\;{\text{of}}\;{\text{patients}}\;{\text{with}}\;{\text{clinical}}\;{\text{success}}/{\text{Total}}\;{\text{number of}}\;{\text{patients}}) \, \times \, 100.$$

Microbiological outcome success was defined as the eradication of the organism causing the primary infection during or after tigecycline therapy [9, 18]. Persistent identification of the same organism 72 h after initiating tigecycline therapy was considered a microbiological failure [9, 18]. The response was considered indeterminate when follow-up cultures were not available to verify eradication [9, 18]. The microbiological success proportion was calculated as [9]:

$$\left[ {{\text{Number}}\;{\text{of}}\;{\text{patients}}\;{\text{with}}\;{\text{microbiological}}\;{\text{success}}/({\text{Total}}\;{\text{number}}\;{\text{of}}\;{\text{patients }}{-}{\text{ Number}}\;{\text{of}}\;{\text{patients}}\;{\text{with}}\;{\text{undetermined}}\;{\text{microbiological}}\;{\text{response}})} \right] \, \times 100.$$

Mortality was quantified using 28-day all-cause mortality defined as deaths occurring between 72 h after treatment started and 28 days after tigecycline discontinuation [18].

Patient bacterial flora was assessed as a compilation of all bacterial isolates from any cultured site from patients treated with tigecycline. Bacterial identification was performed according to standard microbiological procedures. Antibiotic susceptibility was performed using the disc diffusion method as recommended by the Clinical and Laboratory Standards Institute (CLSI). All microbiological methods were consistent with CLSI guidelines for the corresponding year and antimicrobial susceptibility was determined using the CLSI breakpoints for the corresponding year [19]. The average turnaround time for bacterial identification and antibiogram results was 3 working days. Rapid diagnostic tests that detect antimicrobial resistance were not available in the hospital laboratory at the time of the study [20].

Statistical analysis

Patients’ characteristics, treatment strategy, overall clinical outcome, microbiological outcome, all-cause mortality, and bacterial flora were quantified in patients during P1 and P2. The clinical outcome and all-cause mortality were also broken down by infectious disease diagnosis. The Statistical Package for Social Sciences program (SPSS Statistics for Windows, Version 23.0, IBM Corp., Armonk, NY, USA) was used for data entry, management, and analyses. Descriptive analysis was broken down by categorical independent variables for outcomes quantified using numbers and percentages. Bivariate analysis for ASP (P1 vs. P2) was conducted using the Chi square test for categorical variables and independent t-test for continuous variables. Parameters with P-value < 0.05 at the univariate level were considered statistically significant. The ASP impact on drug use density was evaluated using a segmented regression analysis of an interrupted time series adjusted for autocorrelation. We calculated the “change in level” as follows: [(mean P2 value – mean P1 value)/mean P1 value] × 100. We defined “change in trend” as the difference between the P1 and P2 change rates. The segmented regression analysis was applied using the newey command (considering Newey-West standard errors) in STATA version 15 (StataCorp LLC., College Station, TX). Statistical significance was defined as P-value< 0.05.


Patient characteristics

Tigecycline was administered to 153 patients during P1 and 116 patients during P2. All patients’ demographic and clinical characteristics are detailed in Table 1. The comorbidities showed similar patterns during P1 and P2. However, the proportion of patients suffering from cancer decreased from 32.7% (50/153 patients) in P1 to 19% (22/116 patients) in P2 (P = 0.012). Similarly, the percentage of patients on mechanical ventilation dropped from 22.9% (35/153) during P1 to 11.2% during P2 (13/116) (P = 0.013), as well as those requiring vasopressor use [24.2% (37/153 patients) in P1 vs. 12.9% (15/116 patients) in P2, P = 0.021] (Table 1).

Table 1 Comparison of baseline demographic and clinical characteristics, indications, duration, and treatment strategy in patients who received tigecycline before and after the antibiotic stewardship program intervention

Consumption of tigecycline

The average tigecycline consumption was 26 DDD/1000 PD during P1 compared to 11 DDD/1000 PD during P2; there was 55% decline in the drug density level (P < 0.0001). The ASP intervention resulted in a change in trend of − 14.22 DDD/1000 PD per quarter (P < 0.01) (Fig. 1).

Fig. 1
figure 1

Quarterly variation of tigecycline consumption (DDD/1000 PD) before and after the antibiotic stewardship program implementation at Makassed General Hospital. ASP antibiotic stewardship program, DDD defined daily dose, PD patient days, change in

Indications of tigecycline

The proportion of patients who received tigecycline for cSSTI and cIAI, the FDA/EMA-approved indications, significantly increased between P1 and P2 (19% (29/153 patients) vs. 78% (91/116 patients) respectively, P < 0.001) (Table 1). Conversely, there was a significant decline in tigecycline prescription in all the observed off-label indications, including VAP [26.1% (40/153 patients) during P1 and 3.4% (4/116 patients) during P2, P < 0.001], HAP [19.6% (30/153 patients) during P1and 5.2% (6/116 patients) during P2, P = 0.001], BSI [9.2% (14/153 patients) during P1 and “Zero” during P2, P = 0.001], sepsis [9.2% (14/153 patients) during P1 and 3% (3/116 patients) during P2, P = 0.028] and febrile neutropenia [15.7% (24/153 patients) during P1 and 0.9% (1/116 patients) in P2, P < 0.001] (Table 1).

Duration of therapy

The median duration of tigecycline therapy was 8 days (IQR, 5–13 days) during P1 and 7 days (IQR, 5–9 days) during P2 (P = 0.973), regardless of the indication (Table 1). In general, the intervention reduced the proportion of patients who received tigecycline for more than 10 days (35.9% during P1, 18.1% during P2, P = 0.001) and more than 15 days (17.6% during P1, 6% during P2, P = 0.005) (Table 1).

Treatment strategy

Empiric use of tigecycline to treat primary infections increased from 43.8% (67/153 patients) during P1 to 54.3% (63/116 patients) during P2 (P = 0.087), whereas its use as a targeted therapy decreased from 56.2% (86/153 patients) during P1 to 45.7% (53/116 patients) during P2 (P = 0.087) (Table 1).

Tigecycline prescription for combination therapy with other antibiotics decreased from 83% (127/153 patients) during P1 to 59.6% (69/116 patients) during P2 (P < 0.0001), whereas it increased as a monotherapy from 17% (26/153 patients) during P1 to 40.5% during P2 (47/116 patients), (P < 0.0001) (Table 1).

Patient outcome and mortality

The clinical success rate of tigecycline therapy showed an overall significant increase from 48.4% (74/153 patients) during P1 to 65.5% (76/116 patients) during P2 (P = 0.005) in the entire patient population (Table 2). Notably, individual clinical success rates for each indication were not significantly different between P1 and P2.

Table 2 Effect of the antibiotic stewardship program intervention on the clinical success, microbiological success and 28-day all cause mortality rates in patients treated with tigecycline in different subgroups

Follow-up cultures to assess the microbiological success or failure were only available for 39.2% of patients (60/153) in P1 and 22.4% of patients (26/116) in P2. During P1, the microbiological success rate was 43% (26/60 patients), compared to 19% (5/26 patients) during P2 (P = 0.03) (Table 2).

All-cause mortality in the entire tigecycline-treated patient population decreased from 45.1% (69/153 patients) during P1 to 20.7% (24/116 patients) during P2 (P < 0.0001) (Table 2). Mortality rates did not change based on the type of infection tigecycline was prescribed for.

Microbiological flora

The microbiological culture results from patients treated with tigecycline during P1 and P2 were very similar, with few exceptions (Table 3). During both periods, the majority of cultured organisms were Gram-negative bacteria [81.3% of isolates (304/374) during P1 and 88.9% of isolates (296/333) during P2], with A. baumannii and Enterobacteriaceae predominating. The proportion of carbapenem-resistant A. baumannii from all isolated bacteria decreased from 23.3% (87/374 isolates) during P1 to 17.1% (57/333 isolates) during P2 (P = 0.04). Enterobacteriaceae species resistant to third generation cephalosporins constituted 17% of all isolated bacteria (64/374 isolates) during P1 compared to 22% (73/333 isolates) during P2. Specifically, Klebsiella spp. resistant to third generation cephalosporins represented 4.8% (18/374 isolates) of the isolated flora during P1 and increased to 9.3% (31/333 isolates) during P2 (P = 0.02) (Table 3). Carbapenem resistance among Escherichia coli and Klebsiella spp. emerged following the ASP [(0.6% (2/333 isolates) during P1 and 3.9% (13/333 isolates) during P2].

Table 3 Comparison of the bacterial flora isolated from patients treated with tigecycline before and after the antibiotic stewardship program intervention

In cultured Gram-positive bacteria, methicillin-resistant S. aureus isolation decreased during the intervention period [1.6% of isolates (6/374) during P1 and 0.6% of isolates (2/333) during P2, P = 0.22]. Additionally, vancomycin-resistant Enterococci were isolated from patients at P2 (0.9%, 3/333 isolates) (Table 3).


This study observed the effects of an ASP for tigecycline use among inpatients by comparing the 2 years before the intervention to 2 years during the intervention. Before the intervention, a formulary restriction policy was used to control prescription of broad-spectrum antibiotics in our facility, including tigecycline. During the intervention period, a dedicated ASP team was implemented to prospectively audit prescribed antimicrobials and give immediate feedback during daily ward rounds. The program also included educational activities for prescribers regarding rational use of antibiotics and disseminating guidelines for the management of common infectious diseases in our facility.

Patients’ characteristics and comorbidities were similar before and during the intervention, including older age and the presence of comorbid illness like cardiovascular disease, diabetes, and respiratory disease. This demonstrates that a similar range and complexity of cases were being treated at our tertiary care facility during the study [Internal Hospital Data]. Yet, we observed a change in tigecycline use and therapy strategy, where tigecycline prescriptions to treat infections were reduced in neutropenic patients with cancer, patients on mechanical ventilation, and patients with hemodynamic failure.

In 2010 and again in 2013, the U.S. FDA issued a boxed warning regarding the increased risk of mortality with tigecycline therapy compared to alternatives for approved and unapproved indications, thus cautioning its administration for all cases and advising the use of available alternative antibiotics [21, 22].

At the time of the intervention, XDR A. baumannii and carbapenem-resistant Enterobacteriaceae were on the rise in most Lebanese hospitals and many prescribers were eager to avoid using carbapenem whenever possible [23,24,25,26]. The recently approved antibiotic formulations containing cephalosporins and beta-lactamase inhibitors that show promise against these organisms, such as ceftolozane/tazobatam and ceftazidime/avibactam, were not available in Lebanon during the study. Accordingly, tigecycline use continued during the ASP as part of the carbapenem-sparing strategy, but the intervention succeeded in decreasing tigecycline use in high-risk and immunocompromised patients.

The type of infection was also a consideration. Tigecycline was primarily restricted to FDA-approved indications per our ASP protocols. It was mainly prescribed to manage acute bacterial cSSTI and cIAI in non-critically ill patients. Its use in severely ill patients and for off-label indications like HAP, VAP, bacteremia, sepsis, and febrile neutropenia was significantly reduced. Shifting the types of infections treated with tigecycline was one of the main priorities of the ASP. The empiric use of tigecycline as a mono- or combination therapy to reduce carbapenem use in non-severely ill patients with cSSTI and cIAI who were at risk for infection with MDR bacteria was supported by national and international guidelines, multicenter studies, and expert opinions [16, 27,28,29,30,31,32].

The ASP significantly decreased tigecycline consumption levels by 55%, which was accompanied by a prominent reduction in its prescription rate. It is well known that unnecessary, increased antibiotic consumption is positively correlated with the emergence of antibiotic resistance [33,34,35]. Shifting tigecycline prescription from off-label to FDA-approved indications, in addition to shortening therapy duration under appropriate conditions based on international guidelines, collectively reduced its consumption and prescription rates.

The intervention produced a significant decline in tigecycline prescription for more than 10 days, with the mean therapy duration being 7 days (IQR, 5–9 days), regardless of the indication. An extended duration of antibiotic therapy is usually associated with emergence of resistance because selection of antibiotic-resistant strains increases over the time of antibiotic exposure [36]. The Infectious Disease Society of America (IDSA) and Society for Healthcare Epidemiology of America guidelines for ASP implementation in hospitals strongly recommend strategies that reduce antibiotic therapy to the shortest effective duration [37]. For instance, recently updated international guidelines indicate that the optimal duration of antibiotic therapy is 3–5 days in cIAI cases where patients undergo an adequate source-control procedure [28, 29]. The duration can be extended to 7 days depending on the presence of concomitant bacteremia, rate of fever resolution and other signs of infection, and the presence of comorbidities [27, 38]. For other infections like acute bacterial cSSTI, the latest IDSA guidelines suggest 7 to 10 days of therapy with individualization based on clinical response and factors like comorbidities, etiology, and appropriateness of drug or dosages [39].

ASPs aim to effectively control antibiotic utilization and antimicrobial resistance rates [37]. In Lebanon, carbapenem resistance has been on the rise over the past 10 years in clinically-relevant Gram-negative bacteria, an alarming situation in light of limited resources [23,24,25,26]. Colistin resistance has also recently been detected in Enterobacteriaceae and Acinetobacter species from clinical samples [40, 41].

One potential side effect of drug-oriented ASPs is that decreasing consumption of one antimicrobial can result in increased consumption of another one. Despite similar patient population complexity in our tertiary care facility before and during the intervention, decreased tigecycline use was not compensated for by increased consumption of carbapenems or colistin [10]. Implementing the handshake ASP in our facility led to an important reduction in the density and rate of prescribing other broad-spectrum antibiotics, including the antipseudomonal carbapenems imipenem and meropenem and colistimethate sodium [10]. Our ASP protocols were not only based on modifying antibiotics, but on stratifying patients according to the risk of infection or acquisition of Gram-negative organisms resistant to carbapenems and extended-spectrum cephalosporins [10]. This key measure allowed us to properly choose empiric treatment options, thus sparing empiric use of carbapenems and colistin when suitable. Antibiotic therapy was escalated or de-escalated to suit the patient’s condition when microbiological culture results were available.

Notably, there was a compensatory increase in consumption of other antibiotics, like piperacillin-tazobactam and third and fourth generation cephalosporins, in the hospital as a whole. This was due to the various complicated cases frequently managed in our facility, such as neutropenic patients with cancer, bone marrow transplant recipients, and critically ill patients [10]. Piperacillin-tazobactam is a less potent inducer of antimicrobial resistance in Gram-negative bacteria compared to carbapenems, fluoroquinolones, and extended-spectrum cephalosporins [42, 43].

Similar to our predictions, the clinical outcome of patients treated with tigecycline did not change during the ASP based on the type of infection only. However, the ASP improved patient outcomes across the entire tigecycline-treated cohort and decreased overall mortality. Favorable outcome rates and decreased death were due to prescribing tigecycline for FDA-approved indications and avoiding its use for off-label indications where it is not effective, such as HAP, VAP, bacteremia, and sepsis, and in cases with high mortality risks, as per the FDA boxed warning [21, 22].

We also observed the bacterial flora in patients who received tigecycline before and during the intervention, which does not represent the full hospital ecology. Microbiological culture results were similar during both periods, with mostly Gram-negative bacteria isolated from clinical samples. However, fewer patients with carbapenem-resistant A. baumannii received tigecycline during the intervention because most of the cases infected with this organism were critically ill and suffering from the off-label diseases HAP or VAP [Internal Hospital Data]. Conversely, we observed an increase in Enterobacteriaceae species resistant to third generation cephalosporins and the emergence of carbapenem resistance in these species. The ASP did not induce this issue because the rate of change of susceptibility patterns of nosocomial flora to tigecycline and other available antibiotics lags behind that of antibiotic prescription during the observed intervention period [44]. It may have been induced by the extensive use of carbapenems and other broad-spectrum antibiotics before the ASP. It is important to note that tigecycline does not stimulate cross-resistance to other antibiotic classes [15]. Its induction of resistance does not have the same impact on patient outcomes or altering the microbiome that is observed for other antibiotics after excessive use [45, 46].

Limitations and strengths

A main limitation in this study is that it does not consider alternative antibiotics used for non-FDA-approved indications along with the corresponding patient outcome, particularly in the context of increasing carbapenem resistance. Its retrospective design, small sample size, and lack of adjusted analyses for results that are subject to confounds are also considerable limitations. The observed microbiological success rate was also subject to surveillance bias because most cases did not have follow-up cultures.

Nevertheless, this study highlights the importance of drug utilization reviews and how ASPs can reduce drawbacks when using newly introduced antibiotics. This study details a real-life experience in a developing country where the incidence of nosocomial extensively drug-resistant organisms has steadily increased, creating a significant threat of no antimicrobial options in the therapeutic armamentarium.


The ASP targeting tigecycline prescriptions improved its use and patient outcomes. Tigecycline played an important role in managing cIAI and acute bacterial cSSTI during the antibiotic resistance era, when it was crucial to spare carbapenem use. Our targeted intervention helped to curb the over-optimistic use of this drug in off-label indications where it is not a suitable treatment option.

Availability of data and materials

The data that support the findings of this study are available from Makassed General Hospital but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of Makassed General Hospital.



Antibiotic stewardship program


Anatomical therapeutic chemical


Complicated intra-abdominal infections


Clinical and Laboratory Standards Institute


Complicated skin and soft tissue infections


Defined daily dose


European Medicines Agency


Food and Drug Administration


Hospital-acquired pneumonia


Infectious Disease Society of America




Period 1


Period 2


Patient days


Ventilator-associated pneumonia




  1. Mendes RE, Farrell DJ, Sader HS, Jones RN. Comprehensive assessment of tigecycline activity tested against a worldwide collection of Acinetobacter spp. (2005–2009). Diagn Microbiol Infect Dis. 2010;68:307–11.

    Article  CAS  PubMed  Google Scholar 

  2. Balode A, Punda-Polic V, Dowzicky MJ. Antimicrobial susceptibility of gram-negative and gram-positive bacteria collected from countries in Eastern Europe: results from the Tigecycline Evaluation and Surveillance Trial (T.E.S.T) 2004–2010. Int J Antimicrob Agents. 2013;41:527–35.

    Article  CAS  PubMed  Google Scholar 

  3. Sader HS, Castanheira M, Flamm RK, Mendes RE, Farrell DJ, Jones RN. Tigecycline activity tested against carbapenem-resistant Enterobacteriaceae from 18 European nations: results from the SENTRY surveillance program (2010–2013). Diagn Microbiol Infect Dis. 2015;83:183–6.

    Article  CAS  PubMed  Google Scholar 

  4. Zarrilli R, Vitale D, Di Popolo A, Bagattini M, Daoud Z, Khan AU, et al. A plasmid-borne blaOXA-58 gene confers imipenem resistance to Acinetobacter baumannii isolates from a Lebanese hospital. Antimicrob Agents Chemother. 2008;52:4115–20.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  5. Hammoudi D, Moubareck CA, Hakime N, Houmani M, Barakat A, Najjar Z, et al. Spread of imipenem-resistant Acinetobacter baumannii co-expressing OXA-23 and GES-11 carbapenemases in Lebanon. Int J Infect Dis. 2015;36(56–61):17.

    Google Scholar 

  6. Moghnieh R, Siblani L, Ghadban D, El Mchad H, Zeineddine R, Abdallah D, et al. Extensively drug-resistant Acinetobacter baumannii in a Lebanese intensive care unit: risk factors for acquisition and determination of a colonization score. J Hosp Infect. 2016;92(1):47–53.

    Article  CAS  PubMed  Google Scholar 

  7. Hammoudi Halat D, Moubareck CA, Sarkis DK. Heterogeneity of carbapenem resistance mechanisms among gram-negative pathogens in Lebanon: results of the first cross-sectional countrywide study. Microb Drug Resist. 2017;23(733–43):16.

    Google Scholar 

  8. Moghnieh R, Araj GF, Awad L, Daoud Z, Mokhbat JE, Jisr T, et al. A compilation of antimicrobial susceptibility data from a network of 13 Lebanese hospitals reflecting the national situation during 2015–2016. Antimicrob Resist Infect Control. 2019;8(1):41.

    Article  PubMed  PubMed Central  Google Scholar 

  9. Moghnieh RA, Abdallah DI, Fawaz IA, Hamandi T, Kassem M, El-Rajab N, et al. Prescription patterns for tigecycline in severely Ill patients for non-FDA approved indications in a developing country: a compromised outcome. Front Microbiol. 2017;27(8):497.

    Google Scholar 

  10. Moghnieh R, Awad L, Abdallah D, Jadayel M, Sinno L, Tamim H, Jisr T, et al. Effect of a “handshake” stewardship program versus a formulary restriction policy on High-End antibiotic use, expenditure, antibiotic resistance, and patient outcome. J Chemother. 2020. ahead of print).

    Article  PubMed  Google Scholar 

  11. Ibrahim OM, Polk RE. Antimicrobial use metrics and benchmarking to improve stewardship outcomes: methodology, opportunities, and challenges. Infect Dis Clin N Am. 2014;28(2):195–214.

    Article  Google Scholar 

  12. Garner JS, Jarvis WR, Emori TG, Horan TC, Hughes JM. CDC definitions for nosocomial infections. Am J Infect Control. 1998;16:128–40.

    Article  Google Scholar 

  13. Centers for Disease Control and Prevention. National Healthcare Safety Network (NHSN) Patient Safety Component Manuel. 2018.

  14. Levy MM, Evans LE, Rhodes A. The surviving sepsis campaign bundle: 2018 update. Intensive Care Med. 2018;44(6):925–8.

    Article  CAS  Google Scholar 

  15. De Rosa FG, Corcione S, Di Perri G, Scaglione F. Re-defining tigecycline therapy. New Microbiol. 2015;38:121–36.

    PubMed  Google Scholar 

  16. Bassetti M, Nicolini L, Repetto E, Righi E, Del Bono V, Viscoli C. Tigecycline use in serious nosocomial infections: a drug use evaluation. BMC Infect Dis. 2010;10:287.

    Article  PubMed  PubMed Central  Google Scholar 

  17. Kuo SC, Wang FD, Fung CP, Chen LY, Chen SJ, Chiang MC, et al. Clinical experience with tigecycline as treatment for serious infections in elderly and critically ill patients. J Microbiol Immunol Infect. 2011;44:45–51.

    Article  CAS  PubMed  Google Scholar 

  18. Montravers P, Dupont H, Bedos JP, Bret P, The Tigecycline Group. Tigecycline use in critically ill patients: a multicentre prospective observational study in the intensive care setting. Intensive Care Med. 2014;40:988–97.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  19. CLSI. Performance standards for antimicrobial susceptibility testing; twenty-eighth informational supplement. In: CLSI document M100-S28. Wayne: Clinical and Laboratory Standards Institute; 2018.

  20. Leonard H, Colodner R, Halachmi S, Segal E. Recent advances in the race to design a rapid diagnostic test for antimicrobial resistance. ACS Sens. 2018;3(11):2202–17.

    Article  CAS  PubMed  Google Scholar 

  21. US FDA. FDA Drug Safety Communication: increased risk of death with tygacil (tigecycline) compared to other antibiotics used to treat similar infections. 2010. Accessed 3 Aug 2020.

  22. US FDA. FDA Drug Safety Communication: FDA warns of increased risk of death with IV antibacterial Tygacil (tigecycline) and approves new Boxed Warning. 2013. Accessed 3 Aug 2020.

  23. Hammoudi D, Moubareck CA, Aires J, Adaime A, Barakat A, Fayad N, et al. Countrywide spread of OXA-48 carbapenemase in Lebanon: surveillance and genetic characterization of carbapenem-non-susceptible Enterobacteriaceae in 10 hospitals over a one-year period. Int J Infect Dis. 2014;29:139–44.

    Article  CAS  PubMed  Google Scholar 

  24. Daoud Z, Farah J, Sokhn ES, El Kfoury K, Dahdouh E, Masri K, et al. Multidrug-resistant Enterobacteriaceae in Lebanese hospital wastewater: implication in the one health concept. Microbial Drug Resist. 2018;24(2):166–74.

    Article  CAS  Google Scholar 

  25. Moghnieh RA, Kanafani ZA, Tabaja HZ, Sharara SL, Awad LS, Kanj SS. Epidemiology of common resistant bacterial pathogens in the countries of the Arab League. Lancet Infect Dis. 2018;18(12):e379–94.

    Article  PubMed  Google Scholar 

  26. WHO. Global antimicrobial resistance surveillance system (GLASS) report: early implementation 2017–2018. Geneva: World Health Organization; 2018.

    Google Scholar 

  27. Haddad N, Kanj SS, Awad LS, Abdallah DI, Moghnieh RA. The 2018 Lebanese Society of Infectious Diseases and Clinical Microbiology Guidelines for the use of antimicrobial therapy in complicated intra-abdominal infections in the era of antimicrobial resistance. BMC Infect Dis. 2019;19(1):293.

    Article  PubMed  PubMed Central  Google Scholar 

  28. Sartelli M, Chichom-Mefire A, Labricciosa FM, Hardcastle T, Abu-Zidan FM, Adesunkanmi AK, et al. The management of intra-abdominal infections from a global perspective: 2017 WSES guidelines for management of intraabdominal infections. World J Emerg Surg. 2017;12(1):29.

    Article  PubMed  PubMed Central  Google Scholar 

  29. Mazuski JE, Tessier JM, May AK, Sawyer RG, Nadler EP, Rosengart MR, et al. The surgical infection society revised guidelines on the management of intra-abdominal infection. Surg Infect. 2017;18(1):1–76.

    Article  Google Scholar 

  30. Heizmann WR, Löschmann PA, Eckmann C, von Eiff C, Bodmann KF, Petrik C. Clinical efficacy of tigecycline used as monotherapy or in combination regimens for complicated infections with documented involvement of multiresistant bacteria. Infection. 2015;43(1):37–43.

    Article  CAS  PubMed  Google Scholar 

  31. Montravers P, Bassetti M, Dupont H, Eckmann C, Heizmann WR, Guirao X, et al. Efficacy of tigecycline for the treatment of complicated skin and soft-tissue infections in real-life clinical practice from five European observational studies. J Antimicrob Chemother. 2013;68(Suppl 2):ii15–24.

    Article  CAS  PubMed  Google Scholar 

  32. Ni W, Han Y, Liu J, Wei C, Zhao J, Cui J, Wang R, Liu Y. Tigecycline treatment for carbapenem-resistant Enterobacteriaceae infections: a systematic review and meta-analysis. Medicine. 2016;95(11):e3126.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  33. Tan CK, Tang HJ, Lai CC, Chen YY, Chang PC, Liu WL. Correlation between antibiotic consumption and carbapenem-resistant Acinetobacter baumannii causing health care-associated infections at a hospital from 2005 to 2010. J Microbiol Immunol Infect. 2015;48(5):540–4.

    Article  PubMed  Google Scholar 

  34. Mascarello M, Simonetti O, Knezevich A, Carniel LI, Monticelli J, Busetti M, et al. Correlation between antibiotic consumption and resistance of bloodstream bacteria in a University Hospital in North Eastern Italy, 2008–2014. Infection. 2017;45(4):459–67.

    Article  CAS  PubMed  Google Scholar 

  35. Zhang D, Hu S, Sun J, Zhang L, Dong H, Feng W, et al. Antibiotic consumption versus the prevalence of carbapenem-resistant Gram-negative bacteria at a tertiary hospital in China from 2011 to 2017. J Infect Public Health. 2019;12(2):195–9.

    Article  PubMed  Google Scholar 

  36. Pasquau J, de Jesus ES, Sadyrbaeva S, Aznarte P, Hidalgo-Tenorio C. The reduction in duration of antibiotic therapy as a key element of antibiotic stewardship programs. J Antimicrob Agents. 2015.

    Article  Google Scholar 

  37. Barlam TF, Cosgrove SE, Abbo LM, MacDougall C, Schuetz AN, Septimus EJ, et al. Implementing an Antibiotic Stewardship Program: guidelines by the Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America. Clin Infect Dis. 2016;62(10):e51–77.

    Article  PubMed  PubMed Central  Google Scholar 

  38. Solomkin JS, Mazuski JE, Bradley JS, Rodvold KA, Goldstein EJ, Baron EJ, et al. Diagnosis and management of complicated intra-abdominal infection in adults and children: guidelines by the Surgical Infection Society and the Infectious Diseases Society of America. Clin Infect Dis. 2010;50:133–64.

    Article  PubMed  Google Scholar 

  39. Stevens DL, Bisno AL, Chambers HF, Dellinger EP, Goldstein EJ, et al. Practice guidelines for the diagnosis and management of skin and soft tissue infections: 2014 update by the Infectious Diseases Society of America. Clin Infect Dis. 2014;59(2):e10–52.

    Article  PubMed  Google Scholar 

  40. Al-Mir H, Osman M, Azar N, Madec JY, Hamze M, Haenni M. Emergence of clinical mcr-1-positive Escherichia coli in Lebanon. J Glob Antimicrob Resist. 2019;19:83–4.

    Article  PubMed  Google Scholar 

  41. Abdallah D, El Mchad H, Moghnieh R. Pandrug-resistant Acinetobacter baumannii infections: case series, contributing factors, outcomes and available treatment options. In: Matar G, editor. Clinical cases in microbiology and infectious diseases. New York: Elsevier; 2017. p. 47–57.

    Google Scholar 

  42. Peterson LR. Squeezing the antibiotic balloon: the impact of antimicrobial classes on emerging resistance. Clin Microbiol Infect. 2005;11(Suppl 5):4–16.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  43. Lee J, Oh CE, Choi EH, Lee HJ. The impact of the increased use of piperacillin/tazobactam on the selection of antibiotic resistance among invasive Escherichia coli and Klebsiella pneumoniae isolates. Int J Infect Dis. 2013;17(8):e638–43.

    Article  CAS  PubMed  Google Scholar 

  44. Chen IL, Lee CH, Su LH, Tang YF, Chang SJ, Liu JW. Antibiotic consumption and healthcare-associated infections caused by multidrug-resistant gram-negative bacilli at a large medical center in Taiwan from 2002 to 2009: implicating the importance of antibiotic stewardship. PLoS ONE. 2013;8(5):e65621.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  45. Hawser SP. Global monitoring of cross-resistance between tigecycline and minocycline, 2004–2009. J Infect. 2010;60(5):401–2.

    Article  PubMed  Google Scholar 

  46. Sato T, Suzuki Y, Shiraishi T, Honda H, Shinagawa M, Yamamoto S, et al. Tigecycline non-susceptibility occurs exclusively in fluoroquinolone-resistant Escherichia coli clinical isolates, including the major multidrug-resistant lineages O25b:H4-ST131-H30R and O1-ST648. Antimicrob Agents Chemother. 2017;61(2):e01654-16.

    Article  PubMed  PubMed Central  Google Scholar 

Download references





Author information

Authors and Affiliations



RM was responsible for study conception, result analysis and drafting of the manuscript. DA performed data analysis and contributed to drafting and reviewing the final version of the manuscript. LA, MJ, AZ, DCA, SH, RL, and RK contributed to data collection and analysis. HT and LS were responsible for results analysis. TJ was responsible for the microbiological analysis. NH edited the final version of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Rima Moghnieh.

Ethics declarations

Ethics approval and consent to participate

The institutional review board (IRB) committee of Makassed General Hospital, Beirut, Lebanon, granted this study ethical approval. The IRB committee waived the requirement of informed consent from patients due to the retrospective nature of this study. During the data collection phase, only subject case numbers were included. At a later stage, a different number was assigned to each of our cases to safeguard subject privacy. The contributing authors only performed data entry and analysis as well as the drafting of the manuscript.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Reprints and Permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Moghnieh, R., Abdallah, D., Awad, L. et al. The effect of an antibiotic stewardship program on tigecycline use in a Tertiary Care Hospital, an intervention study. Ann Clin Microbiol Antimicrob 19, 35 (2020).

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: