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Rao SV, Thilakchand KR, Boloor R, Suresh S, George T, Pais MLJ, Jakribettu RP, Baliga MS. Antimicrobial resistance pattern in aerobic bacteria isolated from endotracheal aspirate in ventilator-associated pneumonia: Ten years observation from a tertiary care hospital. J Anaesthesiol Clin Pharmacol 2024; 40:324-329. [PMID: 38919443 PMCID: PMC11196034 DOI: 10.4103/joacp.joacp_410_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 06/27/2024] Open
Abstract
Background and Aims Ventilator-associated pneumonia (VAP) is a nosocomial infection associated with high morbidity and mortality. This study was undertaken to monitor the trend of the demographical details, comorbid conditions, bacterial etiological agents, and their antibiogram causing VAP in adults in the year 2008, 2013 and 2018. Material and Methods A retrospective study conducted at the Department of Microbiology, Hospital Infection control and Quality Control at a tertiary care teaching hospital. All the adult patients with more than 48 h of the mechanical ventilator with endotracheal intubation with Clinical Pulmonary infection Score >6 with suspicion of VAP were included in the study at a difference of 5 years, i.e., 2008, 2013, and 2018. Results A total of 338 patients were included in the study, of which males accounted for more than two-third of the patients studied. Nearly 45% of the patients belonged to geriatric (>60 years) age group. The most common comorbid conditions were chronic obstructive pulmonary disease, hypertension and diabetes mellitus. Among the gram-negative isolates, Klebsiella pneumoniae, Acinetobacter species, and Pseudomonas aeruginosa were the most common. There is an emergence of resistance to most commonly administered antimicrobial agents like aminoglycosides, levofloxacin, piperacillin/tazobactum, and carbapenems during the study period. Conclusion This is a ten-year study on the antibiotic resistance pattern of organisms causing VAP. As far as the authors are aware, this is the first study addressing the pattern of change in drug resistance in the organisms causing VAP over a decade. The emergence of multi-drug resistant (MDR) MDR pathogens, especially in intensive care unit (ICU), is a great concern for the intensivist and infection control physicians. Preventive measures need to be undertaken to control the spread of these pathogens to the patients in the ICU.
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Affiliation(s)
- Surlu Vidya Rao
- Quality Control/MHA Department, Fr Muller Medical College, Mangalore, Karnataka, India
| | | | - Rekha Boloor
- Microbiology/Infection Control, Fr Muller Medical College, Mangalore, Karnataka, India
| | - Sucharitha Suresh
- Community Medicine, Fr Muller Medical College, Mangalore, Karnataka, India
| | - Thomas George
- Research Centre, Father Muller Research Centre, Mangalore, Karnataka, India
| | - Michael LJ. Pais
- Research Centre, Father Muller Research Centre, Mangalore, Karnataka, India
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Hammoudi Halat D, Ayoub Moubareck C. Hospital-acquired and ventilator-associated pneumonia caused by multidrug-resistant Gram-negative pathogens: Understanding epidemiology, resistance patterns, and implications with COVID-19. F1000Res 2024; 12:92. [PMID: 38915769 PMCID: PMC11195619 DOI: 10.12688/f1000research.129080.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/15/2024] [Indexed: 06/26/2024] Open
Abstract
The ongoing spread of antimicrobial resistance has complicated the treatment of bacterial hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP). Gram-negative pathogens, especially those with multidrug-resistant profiles, including Escherichia coli, Klebsiella pneumoniae, Enterobacter spp., Pseudomonas aeruginosa, and Acinetobacter spp., are important culprits in this type of infections. Understanding the determinants of resistance in pathogens causing pneumonia is ultimately stressing, especially in the shadows of the COVID-19 pandemic, when bacterial lung infections are considered a top priority that has become urgent to revise. Globally, the increasing prevalence of these pathogens in respiratory samples represents a significant infection challenge, with major limitations of treatment options and poor clinical outcomes. This review will focus on the epidemiology of HAP and VAP and will present the roles and the antimicrobial resistance patterns of implicated multidrug-resistant (MDR) Gram-negative pathogens like carbapenem-resistant Acinetobacter baumannii (CRAB), carbapenem-resistant Pseudomonas aeruginosa (CRPA), carbapenem-resistant Enterobacterales (CRE), as well as colistin-resistant Gram-negative pathogens and extended-spectrum β-lactamase (ESBL)-producing Enterobacterales. While emerging from the COVID-19 pandemic, perspectives and conclusions are drawn from findings of HAP and VAP caused by MDR Gram-negative bacteria in patients with COVID-19.
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Wantanatavatod M, Wongkulab P. Clinical Efficacy of Sitafloxacin-Colistin-Meropenem and Colistin-Meropenem in Patients with Carbapenem-Resistant and Multidrug-Resistant Acinetobacter baumannii Hospital-Acquired Pneumonia (HAP)/Ventilator-Associated Pneumonia (VAP) in One Super-Tertiary Hospital in Bangkok, Thailand: A Randomized Controlled Trial. Antibiotics (Basel) 2024; 13:137. [PMID: 38391523 PMCID: PMC10886248 DOI: 10.3390/antibiotics13020137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Carbapenem-resistant A. baumannii (CRAB) hospital-acquired pneumonia (HAP)/ventilator-associated pneumonia (VAP) is now a therapeutic problem worldwide. METHOD An open-label, randomized, superiority, single-blind trial was conducted in Rajavithi Hospital, a super-tertiary care facility in Bangkok, Thailand. CRAB HAP/VAP patients were randomly assigned to receive either sitafloxacin-colistin-meropenem or colistin-meropenem. Outcomes in the two groups were then assessed with respect to mortality, clinical response, and adverse effects. RESULT Between April 2021 and April 2022, 77 patients were treated with combinations of either sitafloxacin plus colistin plus meropenem (n = 40) or colistin plus meropenem (n = 37). There were no significant differences between the two groups with respect to all-cause mortality rates at 7 days and 14 days (respectively, 7.5% vs. 2.7%; p = 0.616, and 10% vs. 10%; p = 1). Patients who received sitafloxacin-colistin-meropenem showed improved clinical response compared with patients who received colistin-meropenem in terms of both intention-to-treat (87.5% vs. 62.2%; p = 0.016) and per-protocol analysis (87.2% vs. 67.7%; p = 0.049). There were no significant differences between the two groups with respect to adverse effects. CONCLUSIONS Adding sitafloxacin as a third agent to meropenem plus colistin could improve clinical outcomes in CRAB HAP/VAP with little or no impact on adverse effects. In short, sitafloxacin-meropenem-colistin could be another therapeutic option for combatting CRAB HAP/VAP.
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Affiliation(s)
- Manasawee Wantanatavatod
- Division of Infectious Disease, Department of Medicine, Rajavithi Hospital, Bangkok 10400, Thailand
| | - Panuwat Wongkulab
- Division of Infectious Disease, Department of Medicine, Rajavithi Hospital, Bangkok 10400, Thailand
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4
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Abdalla JS, Albarrak M, Alhasawi A, Al-Musawi T, Alraddadi BM, Al Wali W, Elhoufi A, Habashy N, Hassanien AM, Kurdi A. Narrative Review of the Epidemiology of Hospital-Acquired Pneumonia and Ventilator-Associated Pneumonia in Gulf Cooperation Council Countries. Infect Dis Ther 2023:10.1007/s40121-023-00834-w. [PMID: 37389707 PMCID: PMC10390449 DOI: 10.1007/s40121-023-00834-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/07/2023] [Indexed: 07/01/2023] Open
Abstract
Hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) are the most common healthcare-associated infections, with rates varying between countries. Antimicrobial resistance (AMR) among common HAP/VAP pathogens has been reported, and multidrug resistance (MDR) is of further concern across Middle Eastern countries. This narrative review summarizes the incidence and pathogens associated with HAP/VAP in hospitals across Gulf Cooperation Council (GCC) countries. A PubMed literature search was limited to available data on HAP or VAP in patients of any age published within the past 10 years. Reviews, non-English language articles, and studies not reporting HAP/VAP data specific to a GCC country were excluded. Overall, 41 articles, a majority of which focused on VAP, were selected for inclusion after full-text screening. Studies conducted over multiple years showed a general reduction in VAP rates over time, with Gram-negative bacteria the most commonly reported pathogens. Gram-negative isolates reported across GCC countries included Acinetobacter baumannii, Pseudomonas aeruginosa, and Klebsiella pneumoniae. Rates of AMR varied widely among studies, and MDR among A. baumannii, K. pneumoniae, Escherichia coli, P. aeruginosa, and Staphylococcus aureus isolates was commonly reported. In Saudi Arabia, between 2015 and 2019, rates of carbapenem resistance among Gram-negative bacteria were 19-25%; another study (2004-2009) reported antimicrobial resistance rates in Acinetobacter species (60-89%), P. aeruginosa (13-31%), and Klebsiella species (100% ampicillin, 0-13% other antimicrobials). Although limited genotype data were reported, OXA-48 was found in ≥ 68% of patients in Saudi Arabia with carbapenem-resistant Enterobacteriaceae infections. Ventilator utilization ratios varied across studies, with rates up to 0.9 reported in patients admitted to adult medical/surgical intensive care units in both Kuwait and Saudi Arabia. VAP remains a burden across GCC countries albeit with decreases in rates over time. Evaluation of prevention and treatment measures and implementation of a surveillance program could be useful for the management of HAP and VAP.
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Affiliation(s)
| | - May Albarrak
- Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | | | - Tariq Al-Musawi
- Al Salam Hospital, Al Khobar, Saudi Arabia.
- Royal College of Surgeons in Ireland-Medical University of Bahrain (RCSI-MUB), Busaiteen, Bahrain.
| | - Basem M Alraddadi
- King Faisal Specialist Hospital & Research Center, Jeddah, Saudi Arabia
| | - Walid Al Wali
- Hamad General Hospital, Doha, Qatar
- Al Wakra Hospital, Al Wakra, Qatar
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5
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Elbehiry A, Marzouk E, Moussa I, Mushayt Y, Algarni AA, Alrashed OA, Alghamdi KS, Almutairi NA, Anagreyyah SA, Alzahrani A, Almuzaini AM, Alzaben F, Alotaibi MA, Anjiria SA, Abu-Okail A, Abalkhail A. The Prevalence of Multidrug-Resistant Acinetobacter baumannii and Its Vaccination Status among Healthcare Providers. Vaccines (Basel) 2023; 11:1171. [PMID: 37514987 PMCID: PMC10384490 DOI: 10.3390/vaccines11071171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/21/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
There is growing concern among healthcare providers worldwide regarding the prevalence of multidrug-resistant Acinetobacter baumannii (A. baumannii). Some of the worst hospital-acquired infections, often in intensive care units (ICUs), are caused by this bacterial pathogen. In recent years, the rise in multidrug-resistant A. baumannii has been linked to the overuse of antimicrobial drugs and the lack of adequate infection control measures. Infections caused by this bacterial pathogen are the result of prolonged hospitalization and ICU stays, and they are associated with increased morbidity and mortality. This review outlines the epidemiology, risk factors, and antimicrobial resistance associated with A. baumannii in various countries, with a special focus on the Kingdom of Saudi Arabia. In response to the growing concern regarding this drug-resistant bacteria, fundamental information about its pathology has been incorporated into the development of vaccines. Although these vaccines have been successful in animal models, their effectiveness in humans remains unproven. The review will discuss the development of A. baumannii vaccines, potential related obstacles, and efforts to find an effective strategy against this pathogen.
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Affiliation(s)
- Ayman Elbehiry
- Department of Public Health, College of Public Health and Health Informatics, Qassim University, Al Bukayriyah 52741, Saudi Arabia
- Department of Bacteriology, Mycology and Immunology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32511, Egypt
| | - Eman Marzouk
- Department of Public Health, College of Public Health and Health Informatics, Qassim University, Al Bukayriyah 52741, Saudi Arabia
| | - Ihab Moussa
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Yazeed Mushayt
- Department of Support Service, King Fahad Armed Hospital, Jeddah 23311, Saudi Arabia
| | | | - Osama Ali Alrashed
- Family Medicine Department, King Fahad Armed Hospital, Jeddah 23311, Saudi Arabia
| | - Khalid Saad Alghamdi
- Family Medicine Department, King Fahad Armed Hospital, Jeddah 23311, Saudi Arabia
| | - Naif Ahmed Almutairi
- Family Medicine Department, King Fahad Armed Hospital, Jeddah 23311, Saudi Arabia
| | | | - Anwar Alzahrani
- Cardiac Center, King Fahad Armed Forces Hospital, Jeddah 23311, Saudi Arabia
| | - Abdulaziz M Almuzaini
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 52571, Saudi Arabia
| | - Feras Alzaben
- Department of Food Service, King Fahad Armed Hospital, Jeddah 23311, Saudi Arabia
| | | | | | - Akram Abu-Okail
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 52571, Saudi Arabia
| | - Adil Abalkhail
- Department of Public Health, College of Public Health and Health Informatics, Qassim University, Al Bukayriyah 52741, Saudi Arabia
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Hassan ME, Al-Khawaja SA, Saeed NK, Al-Khawaja SA, Al-Awainati M, Radhi SSY, Alsaffar MH, Al-Beltagi M. Causative bacteria of ventilator-associated pneumonia in intensive care unit in Bahrain: Prevalence and antibiotics susceptibility pattern. World J Crit Care Med 2023; 12:165-175. [PMID: 37397586 PMCID: PMC10308340 DOI: 10.5492/wjccm.v12.i3.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/03/2023] [Accepted: 03/24/2023] [Indexed: 06/08/2023] Open
Abstract
BACKGROUND Ventilator-associated pneumonia (VAP) is defined as pneumonia that occurs two calendar days following endotracheal intubation or after that. It is the most common infection encountered among intubated patients. VAP incidence showed wide variability between countries.
AIM To define the VAP incidence in the intensive care unit (ICU) in the central government hospital in Bahrain and review the risk factors and the predominant bacterial pathogens with their antimicrobial susceptibility pattern.
METHODS The research was a prospective cross-sectional observational study over six months from November 2019 to June 2020. It included adult and adolescent patients (> 14 years old) admitted to the ICU and required intubation and mechanical ventilation. VAP was diagnosed when it occurred after 48 h after endotracheal intubation using the clinical pulmonary infection score, which considers the clinical, laboratory, microbiological, and radiographic evidence.
RESULTS The total number of adult patients admitted to the ICU who required intubation and mechanical ventilation during the study period was 155. Forty-six patients developed VAP during their ICU stay (29.7%). The calculated VAP rate was 22.14 events per 1000 ventilator days during the study period, with a mean age of 52 years ± 20. Most VAP cases had late-onset VAP with a mean number of ICU days before the development of VAP of 9.96 ± 6.55. Gram-negative contributed to most VAP cases in our unit, with multidrug-resistant Acinetobacter being the most identified pathogen.
CONCLUSION The reported VAP rate in our ICU was relatively high compared to the international benchmark, which should trigger a vital action plan for reinforcing the implementation of the VAP prevention bundle.
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Affiliation(s)
- Mohamed Eliwa Hassan
- Intensive Care Unit, Department of Internal medicine, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain, Manama 12, Manama, Bahrain
| | - Safaa Abdulaziz Al-Khawaja
- Infectious Disease Unit, Department of Internal Medicine, Salmaniya Medical Complex, Ministry of Health, Kingdom of Bahrain, Manama 12, Manama, Bahrain
| | - Nermin Kamal Saeed
- Medical Microbiology Section, Department of Pathology, Salmaniya Medical Complex, Ministry of Health, Kingdom of Bahrain, Manama 12, Manama, Bahrain
- Medical Microbiology Section, Department of Pathology, Irish Royal College of Surgeon, Bahrain, Busiateen 15503, Muharraq, Bahrain
| | - Sana Abdulaziz Al-Khawaja
- Intensive Care Unit, Department of Internal medicine, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain, Manama 12, Manama, Bahrain
| | - Mahmood Al-Awainati
- Department of Family Medicine, Ministry of Health, Manama, Kingdom of Bahrain, Manama 12, Manama, Bahrain
| | - Sara Salah Yusuf Radhi
- Intensive Care Unit, Department of Internal medicine, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain, Manama 12, Manama, Bahrain
| | - Mohamed Hameed Alsaffar
- Intensive Care Unit, Department of Internal medicine, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain, Manama 12, Manama, Bahrain
| | - Mohammed Al-Beltagi
- Department of Pediatrics, Faculty of Medicine, Tanta University, Tanta 31511, Alghrabia, Egypt
- Department of Pediatrics, University Medical Center, King Abdulla Medical City, Arabian Gulf University, Dr. Sulaiman Al Habib Medical Group, Manama 26671, Manama, Bahrain
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Alshammari MK, Alotaibi MA, AlOtaibi AS, Alosaime HT, Aljuaid MA, Alshehri BM, AlOtaibi YB, Alasmari AA, Alasmari GA, Mohammed MH, Althobaiti SM, Almuhaya RA, Alkhoshi TA, Alosaimi AS, Alotaibi AA. Prevalence and Etiology of Community- and Hospital-Acquired Pneumonia in Saudi Arabia and Their Antimicrobial Susceptibility Patterns: A Systematic Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59040760. [PMID: 37109718 PMCID: PMC10143967 DOI: 10.3390/medicina59040760] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 03/30/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023]
Abstract
(1) Background and Objectives: Pneumonia is a major cause of morbidity and mortality worldwide, including in Saudi Arabia, and the prevalence and etiology of the disease varies depending on the setting. The development of effective strategies can help reduce the adverse impact of this disease. Therefore, this systematic review was conducted to explore the prevalence and etiology of community-acquired and hospital-acquired pneumonia in Saudi Arabia, as well as their antimicrobial susceptibility. (2) Materials and Methods: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 recommendations were followed for this systematic review. Several databases were used to perform a thorough literature search, and papers were then assessed for eligibility by two independent reviewers. The Newcastle-Ottawa Scale (NOS) was used to extract the data from the relevant research and evaluate its quality. (3) Results: This systematic review included 28 studies that highlighted the fact that gram-negative bacteria, particularly Acinetobacter spp. and Pseudomonas aeruginosa, were the common cause of hospital-acquired pneumonia, while Staphylococcus aureus and Streptococcus spp. were responsible for community-acquired pneumonia in children. The study also found that bacterial isolates responsible for pneumonia showed high resistance rates against several antibiotics, including cephalosporins and carbapenems. (4) Conclusions: In conclusion, the study found that different bacteria are responsible for community- and hospital-acquired pneumonia in Saudi Arabia. Antibiotic resistance rates were high for several commonly used antibiotics, highlighting the need for rational antibiotic use to prevent further resistance. Moreover, there is a need to conduct more regular multicenter studies to assess etiology, resistance, and susceptibility patterns of pneumonia-causing pathogens in Saudi Arabia.
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Affiliation(s)
| | | | | | | | | | | | | | - Asma Ali Alasmari
- Clinical Pharmacy & Pharmacology Department, Ibn Sina National College for Medical Studies, Jeddah 22421, Saudi Arabia
| | - Ghadi Ali Alasmari
- Department of Ambulatory Care Pharmacy, International Medical Center, Jeddah 23214, Saudi Arabia
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Hafiz TA, Bin Essa EA, Alharbi SR, Alyami AS, Alkudmani ZS, Mubaraki MA, Alturki NA, Alotaibi F. Epidemiological, Microbiological, and Clinical Characteristics of Multi-Resistant Pseudomonas aeruginosa Isolates in King Fahad Medical City, Riyadh, Saudi Arabia. Trop Med Infect Dis 2023; 8:tropicalmed8040205. [PMID: 37104331 PMCID: PMC10145365 DOI: 10.3390/tropicalmed8040205] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Increasing rates of serious multi-drug resistant (MDR) Pseudomonas aeruginosa infections have been reported globally, including in Saudi Arabia. This retrospective study investigates the epidemiological, microbiological, and clinical characteristics of multi-resistant P. aeruginosa (n3579 clinical isolates) in King Fahad Medical City, Riyadh, Saudi Arabia (2019–2021). Information on antimicrobial susceptibility and medical history was collected from the hospital database. P. aeruginosa infections occurred in 55.6% of males and 44.4% of females, and P. aeruginosa was more prevalent in children than in adults. Our analysis showed that P. aeruginosa had the highest sensitivity to amikacin (92.6%) and greatest resistance to aztreonam (29.8%), imipenem (29.5%), ceftazidime (26.1%), meropenem (25.6%), and cefepime (24.3%). MDR and extensively drug resistant (XDR) strains were more prevalent in male than female patients. Female patients showed higher rates of infection with pan-drug resistant (PDR) strains. Respiratory samples contained the majority of resistant isolates. Septic shock and liver disease were strongly correlated with mortality in the ICU patient group after analysing the relative risk associated with mortality. Our study emphasises the threat of multi-resistant P. aeruginosa in Saudi Arabia (and potentially the Middle East) and highlights important sources and contexts of infection that inhibit its effective control and clinical management.
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Affiliation(s)
- Taghreed A. Hafiz
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh 12372, Saudi Arabia
- Correspondence: ; Tel.: +966-11-805-2575
| | - Eman A. Bin Essa
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh 12372, Saudi Arabia
| | - Sarah R. Alharbi
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh 12372, Saudi Arabia
| | - Ahmed S. Alyami
- Pathology and Clinical Laboratory Medicine, King Fahad Medical City, Riyadh 11525, Saudi Arabia
| | - Zeina S. Alkudmani
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh 12372, Saudi Arabia
| | - Murad A. Mubaraki
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh 12372, Saudi Arabia
| | - Norah A. Alturki
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh 12372, Saudi Arabia
| | - Fawzia Alotaibi
- Pathology Department, College of Medicine, King Saud University, Riyadh 12372, Saudi Arabia
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9
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Zhang J, He X, Zhang H, Liao Y, Wang Q, Li L, Yu J. Factors Driving Microbial Community Dynamics and Potential Health Effects of Bacterial Pathogen on Landscape Lakes with Reclaimed Water Replenishment in Beijing, PR China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:5127. [PMID: 35564521 PMCID: PMC9106022 DOI: 10.3390/ijerph19095127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 11/16/2022]
Abstract
Assessing the bacteria pathogens in the lakes with reclaimed water as major influents are important for public health. This study investigated microbial communities of five landscape lakes replenished by reclaimed water, then analyzed driven factors and identified health effects of bacterial pathogens. 16S rRNA gene sequence analysis demonstrated that Proteobacteria, Actinobacteria, Cyanobacteria, Firmicutes, and Verrucomicrobia were the most dominant phyla in five landscape lakes. The microbial community diversities were higher in June and July than that in other months. Temperature, total nitrogen and phosphorus were the main drivers of the dominant microbial from the Redundancy analysis (RDA) results. Various potential bacterial pathogens were identified, including Pseudomonas, GKS98_freshwater_group, Sporosarcina, Pseudochrobactrum, Streptomyces and Bacillus, etc, some of which are easily infectious to human. The microbial network analysis showed that some potential pathogens were nodes that had significant health effects. The work provides a basis for understanding the microbial community dynamics and safety issues for health effects in landscape lakes replenished by reclaimed water.
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Affiliation(s)
- Junzhi Zhang
- Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; (X.H.); (H.Z.); (Y.L.); (L.L.)
| | - Xiao He
- Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; (X.H.); (H.Z.); (Y.L.); (L.L.)
| | - Huixin Zhang
- Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; (X.H.); (H.Z.); (Y.L.); (L.L.)
| | - Yu Liao
- Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; (X.H.); (H.Z.); (Y.L.); (L.L.)
| | - Qi Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
- University of Chinese Academy of Sciences, Beijing 100019, China
| | - Luwei Li
- Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; (X.H.); (H.Z.); (Y.L.); (L.L.)
| | - Jianwei Yu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
- University of Chinese Academy of Sciences, Beijing 100019, China
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10
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Chauzy A, Akrong G, Aranzana-Climent V, Moreau J, Prouvensier L, Mirfendereski H, Buyck JM, Couet W, Marchand S. PKPD Modeling of the Inoculum Effect of Acinetobacter baumannii on Polymyxin B in vivo. Front Pharmacol 2022; 13:842921. [PMID: 35370719 PMCID: PMC8966651 DOI: 10.3389/fphar.2022.842921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 02/28/2022] [Indexed: 11/20/2022] Open
Abstract
The reduction in antimicrobial activity at high bacterial counts is a microbiological phenomenon known as the inoculum effect (IE). In a previous in vitro study, a significant IE was observed for polymyxin B (PMB) against a clinical isolate of Acinetobacter baumannii, and well described by a new pharmacokinetic-pharmacodynamic model. Few in vivo studies have investigated the impact of inoculum size on survival or antibiotic efficacy. Therefore, our objective was to confirm the influence of inoculum size of this A. baumannii clinical isolate on PMB in vivo effect over time. Pharmacokinetics and pharmacodynamics of PMB after a single subcutaneous administration (1, 15 and 40 mg/kg) were studied in a neutropenic murine thigh infection model. The impact of A. baumannii inoculum size (105, 106 and 107 CFU/thigh) on PMB efficacy was also evaluated. In vivo PMB PK was well described by a two-compartment model including saturable absorption from the subcutaneous injection site and linear elimination. The previous in vitro PD model was modified to adequately describe the decrease of PMB efficacy with increased inoculum size in infected mice. The IE was modeled as a decrease of 32% in the in vivo PMB bactericidal effect when the starting inoculum increases from 105 to 107 CFU/thigh. Although not as important as previously characterized in vitro an IE was confirmed in vivo.
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Affiliation(s)
- Alexia Chauzy
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France
| | - Grace Akrong
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France
| | - Vincent Aranzana-Climent
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France
| | - Jérémy Moreau
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France
| | - Laure Prouvensier
- INSERM U1070, Poitiers, France.,Département de Toxicologie et de Pharmacocinétique, CHU de Poitiers, Poitiers, France
| | - Hélène Mirfendereski
- INSERM U1070, Poitiers, France.,Département de Toxicologie et de Pharmacocinétique, CHU de Poitiers, Poitiers, France
| | - Julien M Buyck
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France
| | - William Couet
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France.,Département de Toxicologie et de Pharmacocinétique, CHU de Poitiers, Poitiers, France
| | - Sandrine Marchand
- INSERM U1070, Poitiers, France.,UFR Médecine-Pharmacie, Université de Poitiers, Poitiers, France.,Département de Toxicologie et de Pharmacocinétique, CHU de Poitiers, Poitiers, France
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Alali WQ, AlFouzan W, Dhar R. Prevalence of antimicrobial resistance in Gram-negative clinical isolates from a major secondary hospital in Kuwait: a retrospective descriptive study. Germs 2021; 11:498-511. [PMID: 35096667 PMCID: PMC8789362 DOI: 10.18683/germs.2021.1285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/23/2021] [Accepted: 10/23/2021] [Indexed: 07/21/2023]
Abstract
INTRODUCTION Building an antimicrobial resistance (AMR) surveillance system in a country requires analysis of available data on AMR in clinical isolates. This study's objective was to determine the AMR prevalence of Gram-negative bacterial (GNB) isolates cultured from clinical specimens at a major general hospital in Kuwait. METHODS A retrospective descriptive study was conducted on AMR profiles of GNB clinical isolates (n=5290) between January and December 2018. Data were extracted from the laboratory information system in the hospital. The GNB organisms (i.e., Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii) were isolated from five main locations at the hospital (i.e., intensive care units [ICUs], surgical wards, medical wards, pediatric wards, and outpatient polyclinics). RESULTS Overall, high AMR prevalence (>50%) against ampicillin, cefuroxime, cefotaxime, ceftazidime, ciprofloxacin, and trimethoprim/sulfamethoxazole, were observed across the GNB organisms. However, low resistance prevalence (<10%) were observed against amikacin, ertapenem, meropenem, and piperacillin/tazobactam. In general, AMR prevalence in E. coli isolates from ICU, medical and surgical wards was significantly (p<0.05) higher compared to other locations, whereas, AMR prevalence in P. aeruginosa isolates from pediatric ward was higher (p<0.05) compared to other locations. The overall multidrug resistance (MDR) prevalence was 38.7% (95% CI: 37.4-40.0). The highest MDR prevalence was among E. coli isolates from respiratory specimens (48%); wounds, bones, or other tissues (47.7%); and body fluids (47.1%). Similarly, MDR prevalence in K. pneumoniae, P. aeruginosa, and A. baumannii isolated from respiratory specimens was significantly (p<0.05) higher compared to other specimen types. The most frequent MDR phenotypes in the four GNB organisms and across the different specimen types included three antimicrobial drug classes: penicillins, cephalosporins, and fluroquinolones. CONCLUSIONS Our findings demonstrate high AMR prevalence among common Gram-negative bacteria at this major hospital. Monitoring data on antimicrobial susceptibility of common bacterial organisms is critical for assessing trends in AMR at hospitals and for informing policy decisions.
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Affiliation(s)
- Walid Q. Alali
- DVM, PhD, Department of Epidemiology & Biostatistics, Faculty of Public Health, Kuwait University, Hawalli, postal code 13060, Kuwait
| | - Wadha AlFouzan
- MD, PhD, Microbiology Unit, Department of Laboratories, Farwaniya Hospital, Farwaniya, postal code 85000, Kuwait, Department of Microbiology, Faculty of Medicine, Kuwait University, Jabriya, postal code 85000, Kuwait
| | - Rita Dhar
- MD, PhD, Microbiology Unit, Department of Laboratories, Farwaniya Hospital, Farwaniya, postal code 85000, Kuwait
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12
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Somily A, Balkhy HH, Enani MAS, Althawadi SI, Alawi M, Al Johani SM, Al Jindan R, AlBarrak A, AlAjlan H, AlAgeel AA, Roushdy HM, Dada HM, Al-Abdely HM. Antimicrobial resistance trends of non-fermenter Gram negative bacteria in Saudi Arabia: A six-year national study. J Infect Public Health 2021; 14:1144-1150. [PMID: 34358816 DOI: 10.1016/j.jiph.2021.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Antimicrobial resistance (AMR) of non-fermenting Gram-negative bacteria (NFGNB) is increasingly recognized as urgent healthcare threat. Trend data on AMR of NFGNB in Saudi Arabia are either old or limited. The objective was to estimate the prevalence and resistance trends of isolated NFGNB in Saudi Arabia. METHODS A retrospective multicenter study involving seven tertiary care hospitals in Saudi Arabia was conducted between 2011 and 2016. Susceptibility testing for non-duplicate isolates was performed according to the Clinical and Laboratory Standards Institute (CLSI) guidelines in College of American Pathologists accredited diagnostic microbiology laboratories in the participating hospitals. RESULTS Out of 461,274 isolates, 100,132 (21.7%) were NFGNB which represented 30% of gram-negative pathogens. Pseudomonas aeruginosa was the most common (73.6%), followed by Acinetobacter baumannii (21.0%) and Stenotrophomonas maltophilia (5.3%). Resistance trends of P. aeruginosa were increasing for aztreonam (absolute increase during the study was 17.3%), imipenem (12.3%), and meropenem (11.6%). A. baumannii was fully resistant to several beta lactam drugs, and resistance trends were increasing for potential treatments such as tigecycline (25.1%) and tobramycin (15.5%). S. maltophilia was >90% resistant to trimethoprim/ sulfamethoxazole and ciprofloxacin by the end of the study. CONCLUSION We are reporting high and/or increasing resistance of NFGNB to common treatment options. The current findings call for urgent actions to combat the increasing resistance of NFGNB. Large scale sharing of AMR data collected at different hospitals with the Saudi AMR committee would be critical to set priorities and monitor progress.
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Affiliation(s)
- Ali Somily
- Department of Pathology and Laboratory Medicine/Microbiology, College of Medicine, King Saud University, King Saud University Medical City, Riyadh 11461, Saudi Arabia.
| | | | - Mushira A S Enani
- Medical Specialties Department and Infectious Diseases Section, King Fahad Medical City, Riyadh, 12231, Saudi Arabia
| | - Sahar I Althawadi
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, 11211, Saudi Arabia
| | - Maha Alawi
- Infection Control & Environmental Health Unit, Department of Medical Microbiology & Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sameera M Al Johani
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, 11211, Saudi Arabia
| | - Reem Al Jindan
- Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ali AlBarrak
- Department of Internal Medicine, Infectious Diseases Unit, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | | | - Abdulaziz A AlAgeel
- Microbiology Department, King Fahad Medical City, Ministry of Health, Riyadh, Saudi Arabia
| | - Hala M Roushdy
- Medical Microbiology, General Directorate of Infection Prevention and Control, Ministry of Health, Saudi Arabia
| | - Hebah M Dada
- National Antimicrobial Resistance Department, Public Health Authority, Riyadh, Saudi Arabia
| | - Hail M Al-Abdely
- Internal Medicine Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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13
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Retrospective Assessment of Ventilator-Associated Pneumonias due to Acinetobacter baumannii in an Oncology Hospital. MEDICAL BULLETIN OF SISLI ETFAL HOSPITAL 2021; 55:193-196. [PMID: 34349595 PMCID: PMC8298077 DOI: 10.14744/semb.2021.01700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/10/2021] [Indexed: 12/04/2022]
Abstract
Objectives: Ventilator-associated pneumonia (VAP) is associated with significant morbidity and mortality in critically ill patients and leads to increases in health-care costs. However, it is preventable, and hospitals can decrease VAP rates. This study aims to retrospectively assess VAP rates in the intensive care unit of Dr. Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital of the University of Health Sciences, with reference to Acinetobacter baumannii, one of the causative organisms. Methods: This study enrolled a total of 2277 patients hospitalized between the years of 2011 and 2015. The required data were collected by reviewing medical files of the patients through computerized hospital databases. VAP rate and ventilator utilization (VU) ratio were calculated using the United States Center for Disease Control National Healthcare Safety Network methodology. Results: Of the study patients, 302 (13.26%) were seen to have developed VAP. Among these patients, 191 (63.25%) were microbiologically diagnosed VAP caused by A. baumannii. Pooled means of VU ratio and VAP rate were 0.70 and 22.91, respectively. Conclusion: The results of this study will motivate the infection control committee of the study hospital to assess current infection control program and strategies so that high VAP rate in the study intensive care unit can be reduced to the minimum possible level.
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14
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Bizri AR, Althaqafi A, Kaabi N, Obeidat N, Al Akoury N, Haridy H. The Burden of Invasive Vaccine-Preventable Diseases in Adults in the Middle East and North Africa (MENA) Region. Infect Dis Ther 2021; 10:663-685. [PMID: 33751422 PMCID: PMC7983355 DOI: 10.1007/s40121-021-00420-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/19/2021] [Indexed: 11/26/2022] Open
Abstract
Implementing vaccination programmes at the national level is key to managing vaccine-preventable diseases (VPDs) in the overall population. Although paediatric immunization programmes have significantly reduced the burden of VPD, disease burden in adults still poses a substantial challenge, particularly in low- and middle-income countries such as those within the Middle East and North Africa (MENA) region. Invasive bacterial diseases (IBDs) are an important public health concern within this region, although vaccines are available to prevent the three most common causative organisms associated with IBD: Neisseria meningitidis (NM), Streptococcus pneumoniae (SP), and Haemophilus influenzae (HI). For this review, three separate PubMed searches were used to identify English-language publications describing the epidemiology of NM, SP, and HI in adults within the MENA region. Of the 161 total publications retrieved among all 3 literature searches, 39 were included in this review (NM: 8 publications; SP: 27 publications; HI: 4 publications). Publications describing epidemiology in paediatric or overall populations were excluded. Overall, these studies generally observed a high burden of IBD among adults in this region. Although NM, SP, and HI are communicable diseases in several countries, the surveillance systems in the MENA region are largely inadequate, resulting in poor responses to outbreaks and hindering improvement in outcomes of communicable diseases. Improving IBD surveillance would provide necessary estimates of disease burden, resulting in better vaccination strategies and improved outcomes. In conclusion, the present review provides a summary of the available information on the epidemiology of vaccine-preventable IBD in adults within the MENA region and highlights the need for increased disease surveillance and preventive strategies in these countries.
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Affiliation(s)
| | - Abdulhakeem Althaqafi
- Department of Medicine, Ministry of National Guard-Health Affairs, Jeddah, Saudi Arabia.
- King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia.
- King Abdullah International Medical Research Centre, Jeddah, Saudi Arabia.
| | - Nawal Kaabi
- Abu Dhabi Health Services Company, Abu Dhabi, United Arab Emirates
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15
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Al-Zahrani IA, Al-Ahmadi BM. Dissemination of VIM-producing Pseudomonas aeruginosa associated with high-risk clone ST654 in a tertiary and quaternary hospital in Makkah, Saudi Arabia. J Chemother 2020; 33:12-20. [PMID: 32602782 DOI: 10.1080/1120009x.2020.1785741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To the best of our knowledge, no molecular surveillance that has been conducted to identify the most common clones of carbapenem-resistant Pseudomonas aeruginosa (CRPA) in western Saudi Arabia. Therefore, this study aimed to identify genetic diversity and the most common CRPA clones in this region. Thirty-five CRPA isolates were collected from a tertiary and quaternary hospital in Makkah. bla VIM was the most common carbapenemase-encoding gene (11 CRPA isolates), while blaGES was reported in only three isolates. CRPA isolates were subjected to multi- locus sequence typing and showed relatively high genetic diversity with 20 sequence types. Approximately one-third (31.4%) of the CRPA isolates belonged to two high-risk clones (ST235 and ST654). This troublesome finding raises serious concerns about the emergence and further dissemination of CRPA high-risk clones in local hospitals and suggest that surveillance programs should be established in this region to monitor and control clonal dissemination of all multidrug resistant bacteria, including CRPA.
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Affiliation(s)
- Ibrahim A Al-Zahrani
- Faculty of Applied Medical Sciences, Medical Laboratory Technology Department, King Abdulaziz University, Jeddah, Saudi Arabia.,Special infectious Agents Unit-Biosafety Level-3, King Fahad Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Bashaer M Al-Ahmadi
- Faculty of Applied Medical Sciences, Medical Laboratory Technology Department, King Abdulaziz University, Jeddah, Saudi Arabia
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16
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Evaluation of acinetobacter baumannii pneumonia among critically ill patients in a tertiary care hospital in Saudi Arabia. Heliyon 2020; 6:e03976. [PMID: 32462088 PMCID: PMC7240323 DOI: 10.1016/j.heliyon.2020.e03976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/14/2019] [Accepted: 05/11/2020] [Indexed: 11/22/2022] Open
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17
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Mahmoudi H, Shokoohizadeh L, Zare Fahim N, Mohamadi Bardebari A, Moradkhani S, Alikhani MY. Detection of adeABC efllux pump encoding genes and antimicrobial effect of Mentha longifolia and Menthol on MICs of imipenem and ciprofloxacin in clinical isolates of Acinetobacter baumannii. BMC Complement Med Ther 2020; 20:92. [PMID: 32192484 PMCID: PMC7081589 DOI: 10.1186/s12906-020-02887-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 03/09/2020] [Indexed: 11/24/2022] Open
Abstract
Background Acinetobacter baumannii is an opportunistic pathogen that causes nosocomial infections especially in patients in intensive care units (ICUs). Accordingly, the aim of our study was to detection of adeABC efllux pump encoding genes and antimicrobial effect of the essential oil of Mentha longifolia and Menthol on the minimum inhibitory concentration (MIC) of imipenem and ciprofloxacin in clinical isolates of A. baumannii. Methods A total of 75 clinical isolates of A. baumannii were collected. The presence of efflux pump genes was detected by polymerase chain reaction (PCR). The minimum inhibitory concentration (MIC) of the essential oil of Mentha longifolia and Menthol and their combined effect with antibiotics were measured by microbroth dilution method and fractional inhibitory concentration (FIC) index. Results The frequency of adeA, adeB, and adeC genes in clinical isolates of A. baumannii were 86.7, 90.7, and 92%, respectively. When the essential oil of Mentha longifolia was combined with ciprofloxacin and imipenem, MICs decreased 4- and 8-fold, respectively. In the combination of menthol with imipenem, the resistance to imipenem was reduced from 0- to 16-fold in 90% (63/70) of the isolates. Conclusion The presence of efflux pump genes in more than 90% of A. baumannii isolates indicates its potential role in inducing imipenem- and ciprofloxacin-resistance in this bacterium. Menthol has an antimicrobial effect as an active ingredient in Mentha longifolia. In the future, the combination of medicinal plants with antibiotics can be used as a complement in treating diseases caused by drug-resistant bacteria such as A. baumannii infections.
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Affiliation(s)
- Hassan Mahmoudi
- Department of Microbiology, Faculty of Medicine, Medical Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Leili Shokoohizadeh
- Department of Microbiology, Faculty of Medicine, Medical Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Nayreh Zare Fahim
- Department of Microbiology, Faculty of Medicine, Medical Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ali Mohamadi Bardebari
- Department of Microbiology, Faculty of Medicine, Medical Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Shirin Moradkhani
- School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Medical Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran. .,Brucellosis Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
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18
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Ten-year resistance trends in pathogens causing healthcare-associated infections; reflection of infection control interventions at a multi-hospital healthcare system in Saudi Arabia, 2007-2016. Antimicrob Resist Infect Control 2020; 9:21. [PMID: 32000850 PMCID: PMC6993320 DOI: 10.1186/s13756-020-0678-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/09/2020] [Indexed: 01/13/2023] Open
Abstract
Background Studying temporal changes in resistant pathogens causing healthcare-associated infections (HAIs) is crucial in improving local antimicrobial and infection control practices. The objective was to describe ten-year trends of resistance in pathogens causing HAIs in a tertiary care setting in Saudi Arabia and to compare such trends with those of US National Health Surveillance Network (NHSN). Methods Pooled analysis of surveillance data that were prospectively collected between 2007 and 2016 in four hospitals of Ministry of National Guard Health Affairs. Definitions and methodology of HAIs and antimicrobial resistance were based on NHSN. Consecutive NHSN reports were used for comparisons. Results A total 1544 pathogens causing 1531 HAI events were included. Gram negative pathogens (GNP) were responsible for 63% of HAIs, with a significant increasing trend in Klebsiella spp. and a decreasing trend in Acinetobacter. Methicillin-resistant Staphylococcus aureus (27.0%) was consistently less frequent than NHSN. Vancomycin-resistant Enterococci (VRE, 20.3%) were more than doubled during the study, closing the gap with NHSN. Carbapenem resistance was highest with Acinetobacter (68.3%) and Pseudomonas (36.8%). Increasing trends of carbapenem resistance were highest in Pseudomonas and Enterobacteriaceae, closing initial gaps with NHSN. With the exception of Klebsiella and Enterobacter, multidrug-resistant (MDR) GNPs were generally decreasing, mainly due to the decreasing resistance towards cephalosporins, fluoroquinolones, and aminoglycosides. Conclusion The findings showed increasing trends of carbapenem resistance and VRE, which may reflect heavy use of carbapenems and vancomycin. These findings may highlight the need for effective antimicrobial stewardship programs, including monitoring and feedback on antimicrobial use and resistance.
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19
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Hasanin A, Mukhtar A, El-adawy A, Elazizi H, Lotfy A, Nassar H, Ghaith D. Ventilator associated pneumonia caused by extensive-drug resistant Acinetobacter species: Colistin is the remaining choice. EGYPTIAN JOURNAL OF ANAESTHESIA 2019. [DOI: 10.1016/j.egja.2016.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Ahmed Hasanin
- Department of Anesthesia, Faculty of Medicine, Cairo University, Egypt
| | - Ahmed Mukhtar
- Department of Anesthesia, Faculty of Medicine, Cairo University, Egypt
| | - Akram El-adawy
- Department of Anesthesia, Faculty of Medicine, Cairo University, Egypt
| | - Hossam Elazizi
- Department of Anesthesia, Faculty of Medicine, Cairo University, Egypt
| | - Ahmed Lotfy
- Department of Anesthesia, Faculty of Medicine, Cairo University, Egypt
| | - Heba Nassar
- Department of Anesthesia, Faculty of Medicine, Cairo University, Egypt
| | - Doaa Ghaith
- Department of Clinical Pathology, Faculty of Medicine, Cairo University, Egypt
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20
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Huang Y, Zhou Q, Wang W, Huang Q, Liao J, Li J, Long L, Ju T, Zhang Q, Wang H, Xu H, Tu M. Acinetobacter baumannii Ventilator-Associated Pneumonia: Clinical Efficacy of Combined Antimicrobial Therapy and in vitro Drug Sensitivity Test Results. Front Pharmacol 2019; 10:92. [PMID: 30814950 PMCID: PMC6381041 DOI: 10.3389/fphar.2019.00092] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/23/2019] [Indexed: 01/25/2023] Open
Abstract
Objective: To evaluate therapeutic efficacy of different combined antimicrobial treatments against Acinetobacter baumannii ventilator-associated pneumonia (VAP). Methods: Clinical outcomes were retrospectively analyzed to elucidate the efficacy of four combined antimicrobial regimens. The chessboard and micro broth dilution methods determined the minimum inhibitory concentrations (MICs) of four antiseptic drugs singly used and combined two drugs against 36 isolates of multidrug-resistant (MDR) A. baumannii. Results: The incidence of VAP was approximately 6.9% (237/3424) between January 1, 2015 and December 31, and 35.9% (85/237) of the cases were caused by A. baumannii. Among these cases, 60 belonged to AB-VAP, for whom antimicrobial treatment plan was centralized and clinical data was complete. Moreover, all 60 strains of A. baumannii were MDR bacteria from reports microbiological laboratory. Resistance rate was lowest for amikacin (68.3%) and ampicillin sulbactam (71.7%). Resistance rate for imipenem increased from 63.2 to 90.9% during the 3 years. However, in these 60 cases of AB-VAP, the combination between 4 antibiotics was effective in most cases: the effective rate was 75% (18/24) for sulbactam combined with etilmicin, 71.4% (10/14) for sulbactam combined with levofloxacin, 72.7% (8/11) for meropenem combined with etilmicin, and 63.6% (7/11) for meropenem combined with levofloxacin. There was no statistical difference between four regimens (P > 0.05). Sulbactam combined with etilmicin decreased 1/2 of MIC50 and MIC90 of sulbactam while the decreases in etilmicin were more obviously than single drug. When adopting meropenem combined with levofloxacin or etilmicin, the MIC of meropenem reduced to 1/2 of that in applying single drug. As for sulbactam or meropenem combined with levofloxacin, it also lessened the MIC50 of levofloxacin to 1/2 of that for single drug. FIC results suggested that the effects of four combined antimicrobial regimens were additive or unrelated. When sulbactam was combined with etimicin, the additive effect was 63.89%. Conclusion: Drug combination sensitivity test in vitro may be helpful for choosing antimicrobial treatment plans. Sulbactam or meropenem as the basis of treatment regimens can function as the alternatives against AB-VAP. Sulbactam combined with etimicin has been regarded as a recommended regimen in Suizhou, Hubei, China.
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Affiliation(s)
- Yuqin Huang
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Quan Zhou
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
- Suixian People’s Hospital, Suizhou, China
| | - Wenguo Wang
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Qiang Huang
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Juan Liao
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Junyi Li
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lei Long
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Tao Ju
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Quan Zhang
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Hanqin Wang
- Center for Translational Medicine, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Huaqiang Xu
- Intensive Care Unit, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
| | - Mingli Tu
- Suixian People’s Hospital, Suizhou, China
- Department of Respiratory Medicine, Suizhou Central Hospital, Hubei University of Medicine, Suizhou, China
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21
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Elbrolosy AM, Labeeb AZ, Hassan DM. New Delhi metallo-β-lactamase-producing Acinetobacter isolates among late-onset VAP patients: multidrug-resistant pathogen and poor outcome. Infect Drug Resist 2019; 12:373-384. [PMID: 30809098 PMCID: PMC6377045 DOI: 10.2147/idr.s186924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Acinetobacter spp. are increasingly important microbes involved in late-onset ventilator-associated pneumonia (VAP). Purpose The aims of this study were to determine the prevalence of New Delhi metallo-β-lactamase (MβL) (blaNDM-1)-producing Acinetobacter spp. among late-onset VAP patients in different intensive care units (ICUs) of Menoufia and Kasr Al Ainy University Hospitals, to investigate the possible risk factors contributing to the acquisition of blaNDM-1-producing Acinetobacter infection, and to correlate between antimicrobial resistance pattern and therapeutic efficacy as well as clinical outcomes of these patients. Materials and methods Sixty-four Acinetobacter isolates were collected from mechanically ventilated patients with suspected late-onset VAP and subjected to antimicrobial susceptibility testing. The modified Hodge test (MHT) and combined disk tests (CDT) were applied for blaNDM-1 MβL detection. Acinetobacter isolates with phenotypically confirmed MβLs production were subjected to a PCR assay to verify the presence of blaNDM-1 gene. The most obvious risk factors for acquisition of carbapenem resistance in VAP patients and treatment outcomes were also analyzed. Results Out of 64 Acinetobacter isolates, 42 (65.6%) proved to be blaNDM-1 positive. The sensitivity and specificity of MHT were 52.38% and 41.67%, while for CDT they were 92.86% and 83.33%, respectively. Acinetobacter isolates showed high susceptibility to colistin (85.7%). The clinical response was better among VAP patients who received combined carbapenem plus colistin therapy than those who received colistin alone. Relapse of infection was detected in 12.5% (8/64) of VAP cases. The reported mortality reached 46.8% (30/64) of which 27 (64.3%) were infected with blaNDM-1-positive isolates. Prolonged duration of mechanical ventilation, longer hospital and ICU stays, and prior exposure to antibiotic therapy were by far the most important factors predisposing to carbapenem resistance among VAP patients. Conclusion A worldwide spread of Acinetobacter spp. expressing carbapenemases represents a significant threat to the medical community. The current study addressed the high prevalence of blaNDM-1-producing Acinetobacter isolates among late-onset VAP patients.
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Affiliation(s)
- Asmaa M Elbrolosy
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt,
| | - Azza Z Labeeb
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt,
| | - Dina M Hassan
- Department of Clinical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
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Kanafani ZA, El Zakhem A, Zahreddine N, Ahmadieh R, Kanj SS. Ten-year surveillance study of ventilator-associated pneumonia at a tertiary care center in Lebanon. J Infect Public Health 2019; 12:492-495. [PMID: 30737129 DOI: 10.1016/j.jiph.2019.01.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 01/15/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Ventilator-associated pneumonia (VAP) is associated with significant adverse outcomes in critically-ill patients admitted to the Intensive Care Unit (ICU). Systematic data from Lebanon on VAP are not available and large epidemiological studies from the region are scarce. METHODS We conducted a retrospective study over a 10-year period at the American University of Beirut Medical Center (AUBMC), a tertiary referral center in Lebanon in order to describe the incidence, microbiology, and temporal trends of VAP in the medical/surgical ICU. RESULTS A total of 162 patients developed VAP over the study period and the overall incidence of VAP was 7.9 per 1000 ventilator-days. There was a statistically significant decrease over time in the incidence of VAP, from 13.1 in 2008 to 1.1 per 1000 ventilator-days in 2017. Multidrug-resistant (MDR) Acinetobacter spp. was the predominant pathogen, both in early- as well as late-onset VAP, followed by Pseudomonas aeruginosa. CONCLUSIONS Following significant efforts from the Infection Control and Prevention Program, a considerable reduction in the incidence of VAP was achieved at AUBMC. The predominance of MDR Acinetobacter spp. should be taken into consideration when deciding on empirical therapy in patients with VAP.
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Affiliation(s)
- Zeina A Kanafani
- Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon; Infection Control and Prevention Program, American University of Beirut Medical Center, Beirut, Lebanon
| | - Aline El Zakhem
- Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nada Zahreddine
- Infection Control and Prevention Program, American University of Beirut Medical Center, Beirut, Lebanon
| | - Rihab Ahmadieh
- Infection Control and Prevention Program, American University of Beirut Medical Center, Beirut, Lebanon
| | - Souha S Kanj
- Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon; Infection Control and Prevention Program, American University of Beirut Medical Center, Beirut, Lebanon.
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Ibrahim ME. Prevalence of Acinetobacter baumannii in Saudi Arabia: risk factors, antimicrobial resistance patterns and mechanisms of carbapenem resistance. Ann Clin Microbiol Antimicrob 2019; 18:1. [PMID: 30606201 PMCID: PMC6317247 DOI: 10.1186/s12941-018-0301-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 12/26/2018] [Indexed: 01/16/2023] Open
Abstract
Acinetobacter baumannii is an important opportunistic pathogen due to its capabilities for developing mechanisms of resistance to a wide range of antimicrobial agents including carbapenems. This review described the risk factors, antimicrobial susceptibility and mechanisms of carbapenem resistance of A. baumannii from different geographical regions of Saudi Arabia. Several factors including complexity of intensive care unit (ICU) environments, increased numbers of patients with serious diseases, wide spread gastrointestinal colonization and extensive use of antimicrobial drugs led to a wide prevalence of A. baumannii infections in hospitals in Saudi Arabia. A. baumannii has been noted to be less susceptible to antimicrobials agents, including carbapenems, over time, resulting in the evolution of multidrug-resistant (MDR) strains. Dissemination of MDR A. baumannii is attributed to the extreme use of wide-spectrum antimicrobial drugs in hospitals, cross infection between inpatients, invasive ICU procedures, and hospitalized patients with diabetic and cancer those are under frequent invasive diagnostic and therapeutic interventions. Although an increasing prevalence of colistin and tigecycline resistance has been reported in many hospitals, combinations of these agents with carbapenems or other antibiotics remain the best therapeutic choice and reasonably safe to treat patients with MDR A. baumannii infections. The wide distribution of carbapenem resistant A. baumannii (CRAB) due to several mechanisms with diverse genetic determinants has been documented. Although OXA-23 β-lactamase and OXA-51 β-lactamase are the most common genes responsible for CRAB, other novel genes such as blaVIM, PER-1-like and GES-5 have been discovered in carbapenem resistant strains. The high rates of MDR A. baumannii in Saudi hospitals indicate that extensive investigation into the molecular basis of MDR and developing new therapies of CRAB is needed. Moreover, the development of a local antibiogram database coupled with a nationwide antimicrobial stewardship and infection prevention program might help to improve our knowledge of the resistance patterns of A. baumannii, and in developing a treatment protocol for decreasing the infection burden in Saudi Arabia.
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Affiliation(s)
- Mutasim E Ibrahim
- Department of Basic Medical Science, College of Medicine, University of Bisha, Bisha, Saudi Arabia.
- Unit of Medical Microbiology, College of Medicine, University of Bisha, P. O. Box 731, Bisha, 61922, Saudi Arabia.
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Prevalence of multidrug drug resistant organisms and hand hygiene compliance in surgical NICU in Cairo University Specialized Pediatric Hospital. EGYPTIAN PEDIATRIC ASSOCIATION GAZETTE 2018. [DOI: 10.1016/j.epag.2018.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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25
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Alghamdi S, Shebl NA, Aslanpour Z, Shibl A, Berrou I. Hospital adoption of antimicrobial stewardship programmes in Gulf Cooperation Council countries: A review of existing evidence. J Glob Antimicrob Resist 2018; 15:196-209. [DOI: 10.1016/j.jgar.2018.07.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 07/12/2018] [Accepted: 07/19/2018] [Indexed: 10/28/2022] Open
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Ju M, Hou D, Chen S, Wang Y, Tang X, Liu J, Chen C, Song Y, Li H. Risk factors for mortality in ICU patients with Acinetobacter baumannii ventilator-associated pneumonia: impact of bacterial cytotoxicity. J Thorac Dis 2018; 10:2608-2617. [PMID: 29997922 DOI: 10.21037/jtd.2018.04.86] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Background Acinetobacter baumannii (A. baumannii) ventilator-associated pneumonia (VAP) in intensive care unit (ICU) is associated with high morbidity and mortality in patients with critical illness. However, the literatures that focused on the short-term prognosis and the risk factors for mortality are limited. The aim of this study was to evaluate the risk factors for mortality in ICU patients with A. baumannii VAP. Methods A retrospective cohort study was conducted in the medical/surgical ICU at Zhongshan Hospital in Shanghai, China. Adult patients meeting the criteria of A. baumannii VAP from January 2012 to October 2015 were enrolled. Apart from collecting clinical and microbiologic data, we performed biofilm-formation and cytotoxicity testing using A. baumannii strains which are isolated from patients. Multivariate logistic regression analysis was used to determine the independent risk factors for 30-day mortality in ICU. Results Seventy-eight patients were included in this study. The 30-day mortality rate in ICU for the patients was 37.2%. Multivariate analysis revealed that short-term mortality was significantly associated with prior surgery [OR, 0.277; 95% confidence interval (CI), 0.089-0.866; P=0.027], higher APACHEII score (OR, 1.140; 95% CI, 1.007-1.291; P=0.038) and an increased bacterial cytotoxicity (OR, 1.029 ; 95% CI, 1.001-1.058; P=0.047). Conclusions The main finding of our study was that increased bacterial cytotoxicity might be a risk factor for short-term mortality in ICU patients with A. baumannii VAP.
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Affiliation(s)
- Mohan Ju
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Dongni Hou
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Shu Chen
- Department of Infectious Disease, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Ying Wang
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xinjun Tang
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jie Liu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Cuicui Chen
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yuanlin Song
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Huayin Li
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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Zowawi HM, Syrmis MW, Kidd TJ, Balkhy HH, Walsh TR, Al Johani SM, Al Jindan RY, Alfaresi M, Ibrahim E, Al-Jardani A, Al Salman J, Dashti AA, Sidjabat HE, Baz O, Trembizki E, Whiley DM, Paterson DL. Identification of carbapenem-resistant Pseudomonas aeruginosa in selected hospitals of the Gulf Cooperation Council States: dominance of high-risk clones in the region. J Med Microbiol 2018; 67:846-853. [PMID: 29664716 DOI: 10.1099/jmm.0.000730] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
PURPOSE The molecular epidemiology and resistance mechanisms of carbapenem-resistant Pseudomonas aeruginosa (CRPA) were determined in hospitals in the countries of the Gulf Cooperation Council (GCC), namely, Saudi Arabia, the United Arab Emirates, Oman, Qatar, Bahrain and Kuwait. METHODOLOGY Isolates were screened for common carbapenem-resistance genes by PCR. Relatedness between isolates was assessed using previously described genotyping methods: an informative-single nucleotide polymorphism MassARRAY iPLEX assay (iPLEX20SNP) and the enterobacterial repetitive intergenic consensus (ERIC)-PCR assay, with selected isolates being subjected to multilocus sequence typing (MLST). Ninety-five non-repetitive isolates that were found to be resistant to carbapenems were subjected to further investigation.Results/Key findings. The most prevalent carbapenemase-encoding gene, blaVIM-type, was found in 37/95 (39 %) isolates, while only 1 isolate (from UAE) was found to have blaIMP-type. None of the CRPA were found to have blaNDM-type or blaKPC-type. We found a total of 14 sequence type (ST) clusters, with 4 of these clusters being observed in more than 1 country. Several clusters belonged to the previously recognized internationally disseminated high-risk clones ST357, ST235, ST111, ST233 and ST654. We also found the less predominant ST316, ST308 and ST823 clones, and novel MLST types (ST2010, ST2011, ST2012 and ST2013), in our collection. CONCLUSION Overall our data show that 'high-risk' CRPA clones are now detected in the region and highlight the need for strategies to limit further spread of such organisms, including enhanced surveillance, infection control precautions and further promotion of antibiotic stewardship programmes.
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Affiliation(s)
- Hosam M Zowawi
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.,The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia.,King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia.,WHO Collaborating Centre for Infection Prevention and Control, and GCC Center for Infection Control, Riyadh, Saudi Arabia
| | | | - Timothy J Kidd
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia.,Centre for Experimental Medicine, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Hanan H Balkhy
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.,King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia.,WHO Collaborating Centre for Infection Prevention and Control, and GCC Center for Infection Control, Riyadh, Saudi Arabia
| | - Timothy R Walsh
- The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia.,Department of Medical Microbiology and Infectious Diseases, School of Medicine, Cardiff University, Heath Park, Cardiff, UK
| | - Sameera M Al Johani
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.,Microbiology, Department of Pathology and Lab Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Reem Y Al Jindan
- Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mubarak Alfaresi
- Pathology and Laboratory Medicine Department at Sheikh Khalifa General Hospital, Umm Al Quwain, UAE.,College of Medicine, University of Sharjah, UAE
| | - Emad Ibrahim
- Clinical Microbiology Department, Hamad Medical Corporation, Doha, Qatar
| | - Amina Al-Jardani
- Medical Microbiology Department, The Royal Hospital, Muscat, Oman
| | - Jameela Al Salman
- Samlaniya Medical Complex, Infectious Diseases Unit, Manama, Bahrain
| | - Ali A Dashti
- Medical Laboratory Department, Faculty of Allied Health Sciences, Health Science Center, Kuwait University, Kuwait City, Kuwait
| | - Hanna E Sidjabat
- The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia
| | - Omar Baz
- King Abdullah International Medical Research Centre, Riyadh, Saudi Arabia
| | - Ella Trembizki
- The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia
| | - David M Whiley
- The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia.,Pathology Queensland, Brisbane, Queensland 4029, Australia
| | - David L Paterson
- The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, Australia
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28
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Nasopharyngeal polymicrobial colonization during health, viral upper respiratory infection and upper respiratory bacterial infection. J Infect 2017; 75:26-34. [PMID: 28412081 DOI: 10.1016/j.jinf.2017.04.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 04/05/2017] [Accepted: 04/07/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES We sought to understand how polymicrobial colonization varies during health, viral upper respiratory infection (URI) and acute upper respiratory bacterial infection to understand differences in infection-prone vs. non-prone patients. METHODS Nasopharyngeal (NP) samples were collected from 74 acute otitis media (AOM) infection-prone and 754 non-prone children during 2094 healthy visits, 673 viral URI visits and 631 AOM visits. Three otopathogens Streptococcus pneumoniae (Spn), Nontypeable Haemophilus influenzae (NTHi), and Moraxella catarrhalis (Mcat) were identified by culture. RESULTS NP colonization rates of multiple otopathogens during health were significantly lower than during viral URI, and during URI they were lower than at onset of upper respiratory bacterial infection in both AOM infection-prone and non-prone children. AOM infection-prone children had higher polymicrobial colonization rates than non-prone children during health, viral URI and AOM. Polymicrobial colonization rates of AOM infection-prone children during health were equivalent to that of non-prone children during viral URI, and during viral URI were equivalent to that of non-prone during AOM infection. Spn colonization was positively associated with NTHi and Mcat colonization during health, but negatively during AOM infection. CONCLUSION The infection-prone patients more frequently have multiple potential bacterial pathogens in the NP than the non-prone patients. Polymicrobial interaction in the NP differs during health and at onset of infection.
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29
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Parisi M, Gerovasili V, Dimopoulos S, Kampisiouli E, Goga C, Perivolioti E, Argyropoulou A, Routsi C, Tsiodras S, Nanas S. Use of Ventilator Bundle and Staff Education to Decrease Ventilator-Associated Pneumonia in Intensive Care Patients. Crit Care Nurse 2016; 36:e1-e7. [PMID: 27694363 DOI: 10.4037/ccn2016520] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Ventilator-associated pneumonia (VAP), one of the most common hospital-acquired infections, has a high mortality rate. OBJECTIVES To evaluate the incidence of VAP in a multidisciplinary intensive care unit and to examine the effects of the implementation of ventilator bundles and staff education on its incidence. METHODS A 24-month-long before/after study was conducted, divided into baseline, intervention, and postintervention periods. VAP incidence and rate, the microbiological profile, duration of mechanical ventilation, and length of stay in the intensive care unit were recorded and compared between the periods. RESULTS Of 1097 patients evaluated, 362 met the inclusion criteria. The baseline VAP rate was 21.6 per 1000 ventilator days. During the postintervention period, it decreased to 11.6 per 1000 ventilator days (P = .01). Length of stay in the intensive care unit decreased from 36 to 27 days (P = .04), and duration of mechanical ventilation decreased from 26 to 21 days (P = .06). CONCLUSIONS VAP incidence was high in a general intensive care unit in a Greek hospital. However, implementation of a ventilator bundle and staff education has decreased both VAP incidence and length of stay in the unit.
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Affiliation(s)
- Maria Parisi
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Vasiliki Gerovasili
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece.
| | - Stavros Dimopoulos
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Efstathia Kampisiouli
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Christina Goga
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Efstathia Perivolioti
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Athina Argyropoulou
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Christina Routsi
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Sotirios Tsiodras
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
| | - Serafeim Nanas
- Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece
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Lenhard JR, Bulitta JB, Connell TD, King-Lyons N, Landersdorfer CB, Cheah SE, Thamlikitkul V, Shin BS, Rao G, Holden PN, Walsh TJ, Forrest A, Nation RL, Li J, Tsuji BT. High-intensity meropenem combinations with polymyxin B: new strategies to overcome carbapenem resistance in Acinetobacter baumannii. J Antimicrob Chemother 2016; 72:153-165. [PMID: 27634916 DOI: 10.1093/jac/dkw355] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 07/07/2016] [Accepted: 07/26/2016] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The pharmacodynamics of polymyxin/carbapenem combinations against carbapenem-resistant Acinetobacter baumannii (CRAB) are largely unknown. Our objective was to determine whether intensified meropenem regimens in combination with polymyxin B enhance killing and resistance suppression of CRAB. METHODS Time-kill experiments for meropenem and polymyxin B combinations were conducted against three polymyxin B-susceptible (MIC of polymyxin B = 0.5 mg/L) CRAB strains with varying meropenem MICs (ATCC 19606, N16870 and 03-149-1; MIC of meropenem = 4, 16 and 64 mg/L, respectively) at 108 cfu/mL. A hollow-fibre infection model was then used to simulate humanized regimens of polymyxin B and meropenem (2, 4, 6 and 8 g prolonged infusions every 8 h) versus N16870 at 108 cfu/mL over 14 days. New mathematical mechanism-based models were developed using S-ADAPT. RESULTS Time-kill experiments were well described by the mathematical mechanism-based models, with the presence of polymyxin B drastically decreasing the meropenem concentration needed for half-maximal activity against meropenem-resistant populations from 438 to 82.1 (ATCC 19606), 158 to 93.6 (N16870) and 433 to 76.0 mg/L (03-149-1). The maximum killing effect of combination treatment was similar among all three strains despite divergent meropenem MIC values (Emax = 2.13, 2.08 and 2.15; MIC of meropenem = 4, 16 and 64 mg/L, respectively). Escalating the dose of meropenem in hollow-fibre combination regimens from 2 g every 8 h to 8 g every 8 h resulted in killing that progressed from a >2.5 log10 cfu/mL reduction with regrowth by 72 h (2 g every 8 h) to complete eradication by 336 h (8 g every 8 h). CONCLUSION Intensified meropenem dosing in combination with polymyxin B may offer a unique strategy to kill CRAB irrespective of the meropenem MIC.
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Affiliation(s)
- Justin R Lenhard
- Laboratory for Antimicrobial Dynamics, NYS Center of Excellence in Bioinformatics & Life Sciences, Buffalo, NY, USA.,School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA.,California Northstate College of Pharmacy, Elk Grove, CA, USA
| | - Jürgen B Bulitta
- Laboratory for Antimicrobial Dynamics, NYS Center of Excellence in Bioinformatics & Life Sciences, Buffalo, NY, USA.,Center for Pharmacometrics and Systems Pharmacology, College of Pharmacy, University of Florida, Orlando, FL, USA
| | - Terry D Connell
- Department of Microbiology and Immunology and The Witebsky Center for Microbial Pathogenesis and Immunology, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - Natalie King-Lyons
- Department of Microbiology and Immunology and The Witebsky Center for Microbial Pathogenesis and Immunology, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - Cornelia B Landersdorfer
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Soon-Ee Cheah
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Visanu Thamlikitkul
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Gauri Rao
- Laboratory for Antimicrobial Dynamics, NYS Center of Excellence in Bioinformatics & Life Sciences, Buffalo, NY, USA.,School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Patricia N Holden
- Laboratory for Antimicrobial Dynamics, NYS Center of Excellence in Bioinformatics & Life Sciences, Buffalo, NY, USA.,School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Thomas J Walsh
- Departments of Pediatrics, Microbiology and Immunology Weill Cornell Medicine, New York, NY, USA
| | - Alan Forrest
- Laboratory for Antimicrobial Dynamics, NYS Center of Excellence in Bioinformatics & Life Sciences, Buffalo, NY, USA.,School of Pharmacy, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Roger L Nation
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Jian Li
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Brian T Tsuji
- Laboratory for Antimicrobial Dynamics, NYS Center of Excellence in Bioinformatics & Life Sciences, Buffalo, NY, USA .,School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
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Al Bshabshe A, Joseph MRP, Al Hussein A, Haimour W, Hamid ME. Multidrug resistance Acinetobacter species at the intensive care unit, Aseer Central Hospital, Saudi Arabia: A one year analysis. ASIAN PAC J TROP MED 2016; 9:903-908. [PMID: 27633307 DOI: 10.1016/j.apjtm.2016.07.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/16/2016] [Accepted: 07/01/2016] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE To identify and to determine the antimicrobial susceptibility of Acinetobacter baumannii (A. baumannii) clinical isolates from ICU at Aseer Central Hospital. METHODS The study was conducted in the Intensive Care Unit, Aseer Central Hospital, Saudi Arabia over 13 months period (2014-2015). Acinetobacter species (n = 105) were isolated from various clinical samples. Isolates were identified using selected phenotypic criteria and confirmed using the Vitek 2 automated system. This system was used to determine the susceptibilities of 21 antimicrobial agents. Patients, isolates and drug data were analyzed using the SPSS statistical software package to determine some epidemiological and microbiological patterns. RESULTS Of the 105 stains, A. baumannii accounted for 49 (46.67%), A. baumannii complex, 19 (18.09%), A. baumannii/haemolyticus 32 (30.47), Acinetobacter haemolyticus 4 (3.81%), Acinetobater lwoffii 1 (0.95%) and unidentified Acinetobater species 2 (1.3%). Of the 105 Acinetobacter strains, 103 (98.1%) were found multidrug resistant (MDR). A. baumannii strain were 100% sensitive to colistin and 74.5% to trimethoprim + sulfamethoxazole. The remaining 19 antimicrobial agents revealed low or no sensitivities: amikacin 16.3%; ampicillin 7.7%; ceftazidime, 7.3%. Distribution of similar sensitivities was shown by other Acinetobacter species. Mean number of isolates from males and females indicates no statistical variation (P = 0.867) whereas age groups showed significant differences (P = 0.008) as it is clear from the high percentage of infected individuals more than 60 years followed by those aged 20-29 years old (19.05%). Upper respiratory tract (30.48%), lower respiratory tract (47.65%) and subcutaneous tissue (9.5%) were the main sources of Acinetobacter spp. but mean numbers of isolates from these specimens indicate no discrepancy between specimens (P = 0.731). CONCLUSIONS Acinetobacter species including A. baumannii were found MDR (98.1%) according to the current Acinetobacter spp. antimicrobial categorization. Approximately half of these strains were A. baumannii. All Acinetobacter species were 100% sensitive to colistin and to some extent to trimethoprim + sulfamethoxazole (74.5%). ICU-acquired pneumonia among patients over 60 years of age who spend prolong times at artificial ventilations made up the majority of the cases.
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Affiliation(s)
- Ali Al Bshabshe
- Department of Medicine, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Martin R P Joseph
- Department of Microbiology, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Ali Al Hussein
- Intensive Care Unit, Aseer Central Hospital, Abha, Saudi Arabia
| | - Waleed Haimour
- Microbiology Laboratories, Aseer Central Hospital, Abha, Saudi Arabia
| | - Mohamed E Hamid
- Department of Microbiology, College of Medicine, King Khalid University, Abha, Saudi Arabia.
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The strategic plan for combating antimicrobial resistance in Gulf Cooperation Council States. J Infect Public Health 2016; 9:375-85. [DOI: 10.1016/j.jiph.2016.03.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Tan X, Zhu S, Yan D, Chen W, Chen R, Zou J, Yan J, Zhang X, Farmakiotis D, Mylonakis E. Candida spp. airway colonization: A potential risk factor for Acinetobacter baumannii ventilator-associated pneumonia. Med Mycol 2016; 54:557-66. [PMID: 27001670 DOI: 10.1093/mmy/myw009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 01/13/2016] [Indexed: 12/28/2022] Open
Abstract
This retrospective study was conducted to identify potential risk factors for Acinetobacter baumannii (A. baumannii) ventilator-associated pneumonia (VAP) and evaluate the association between Candida spp. airway colonization and A. baumannii VAP. Intensive care unit (ICU) patients who were on mechanical ventilation (MV) for ≥48 hours were divided into the following groups: patients with and without Candida spp. airway colonization; colonized patients receiving antifungal treatment or not; patients with A. baumannii VAP and those without VAP. Logistic regression analysis and propensity score matching were used to identify factors independently associated with A. baumannii VAP. Among 618 eligible patients, 264 (43%) had Candida spp. airway colonization and 114 (18%) developed A. baumannii VAP. Along with MV for ≥7 days (adjusted odds ratio [aOR] 8.9, 95% confidence intervals [95% CI] 4.9-15.8) and presence of a central venous catheter (aOR 3.2, 95% CI 1.1-9), Candida spp. airway colonization (aOR 2.6, 95% CI 1.6-4.3) was identified as an independent risk factor for A. baumannii VAP. Patients with Candida spp. airway colonization were more likely to develop A. baumannii VAP than non-colonized patients (23% vs 15%, P=.01 and 34% vs. 15%, P<.001 in propensity score-matched subgroups). Administration of antifungal agents was not associated with A. baumannii VAP (29% vs. 21%, P=.153) but with higher in-hospital mortality (53% vs. 39%, P=.037). Candida spp. airway colonization (43%) and A. baumannii VAP (18%) were common in ICU patients who were on mechanical ventilation for at least 48 hours. Candida spp. airway colonization was an independent risk factor for subsequent A. baumannii VAP.
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Affiliation(s)
- Xiaojiang Tan
- Department of Respiratory Medicine, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, P. R. China
| | - Song Zhu
- Department of Respiratory Medicine, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, P. R. China
| | - Dongxing Yan
- Department of Respiratory Medicine, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, P. R. China
| | - Weiping Chen
- Department of Respiratory Medicine, The People's Hospital of Qingyuan, Jinan University Hospital, Qingyuan 511518, P. R. China
| | - Ruilan Chen
- Department of Respiratory Medicine, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, P. R. China
| | - Jian Zou
- Informatics Department, Nanfang Hospital, Southern Medical University, Guangzhou 510515, P. R. China
| | - Jingdong Yan
- Informatics Department, Nanfang Hospital, Southern Medical University, Guangzhou 510515, P. R. China
| | | | - Dimitrios Farmakiotis
- Department of Medicine, Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island 02903, USA
| | - Eleftherios Mylonakis
- Department of Medicine, Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island 02903, USA
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Al-Omari A, Mohammed M, Alhazzani W, Al-Dorzi HM, Belal MS, Albshabshe AO, Al-Subaie MF, Arabi YM. Treatment of ventilator-associated pneumonia and ventilator-associated tracheobronchitis in the intensive care unit. A national survey of clinicians and pharmacists in Saudi Arabia. Saudi Med J 2015; 36:1453-62. [PMID: 26620988 PMCID: PMC4707402 DOI: 10.15537/smj.2015.12.12345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To assess current practices of different healthcare providers for treating extensively drug-resistant (XDR) Acinetobacter baumannii (AB) infections in tertiary-care centers in Saudi Arabia. METHODS This cross-sectional study was performed in tertiary-care centers of Saudi Arabia between March and June 2014. A questionnaire consisting of 3 parts (respondent characteristics; case scenarios on ventilator-associated pneumonia [VAP] and tracheobronchitis [VAT], and antibiotic choices in each scenario) was developed and sent electronically to participants in 34 centers across Saudi Arabia. RESULTS One-hundred and eighty-three respondents completed the survey. Most of the respondents (54.6%) preferred to use colistin-based combination therapy to treat VAP caused by XDR AB, and 62.8% chose to continue treatment for 2 weeks. Most of the participants (80%) chose to treat VAT caused by XDR AB with intravenous antibiotics. A significant percentage of intensive care unit (ICU) fellows (41.3%) and clinical pharmacists (35%) opted for 2 million units (mu) of colistin every 8 hours without a loading dose, whereas 60% of infectious disease consultants, 45.8% of ICU consultants, and 44.4% of infectious disease fellows preferred a 9 mu loading dose followed by 9 mu daily in divided doses. The responses for the scenarios were different among healthcare providers (p less than 0.0001). CONCLUSION Most of the respondents in our survey preferred to use colistin-based combination therapy and intravenous antibiotics to treat VAP and VAT caused by XDR AB. However, colistin dose and duration varied among the healthcare providers.
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Affiliation(s)
- Awad Al-Omari
- Alfaisal University, Riyadh, Kingdom of Saudi Arabia. E-mail.
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Merchant N, Smith K, Jeschke MG. An Ounce of Prevention Saves Tons of Lives: Infection in Burns. Surg Infect (Larchmt) 2015. [PMID: 26207399 DOI: 10.1089/sur.2013.135] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Modern day burn care continues to wage an uphill battle against an enemy that evolves faster than we can develop weapons. Bacteria (bioburden) are everywhere and can infiltrate anywhere within our susceptible population of burn patients. This is why prevention of infection is key to improving their survival and outcome. PURPOSE To reduce the incidence of infection in the burn patient population. MATERIALS Review of pertinent recent literature regarding infection prevention and control in the intensive care unit setting. RESULTS We propose that bioburden is one of the central elements in the infectious cycle that is ever-present in burn units. The mechanism of bacterial entry into the unit and subsequent transmission and infection are delineated. Recommendations for mitigating this risk are provided to guide future clinicians in their care of burn patients. CONCLUSIONS The treatment of infection and sepsis against highly adaptable bacteria is often insurmountable by ill patients. In this process, bioburden needs to be corralled to have any success. Thus, preventing organisms from entering the unit and transferring onto other patients, and eliminating the bacteria dwelling in the unit are all necessary actions in this battle. Ultimately, maintaining a culture that is constantly wary of this risk only can achieve this goal.
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Affiliation(s)
- Nishant Merchant
- 1 Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre , Toronto, Ontario, Canada .,2 Department of Surgery, Division of Plastic Surgery, Department of Immunology, University of Toronto , Ontario, Canada .,3 TECC Program Sunnybrook Health Sciences Centre, University of Toronto , Toronto, Ontario, Canada
| | - Karen Smith
- 1 Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre , Toronto, Ontario, Canada .,2 Department of Surgery, Division of Plastic Surgery, Department of Immunology, University of Toronto , Ontario, Canada .,3 TECC Program Sunnybrook Health Sciences Centre, University of Toronto , Toronto, Ontario, Canada
| | - Marc G Jeschke
- 1 Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre , Toronto, Ontario, Canada .,2 Department of Surgery, Division of Plastic Surgery, Department of Immunology, University of Toronto , Ontario, Canada .,3 TECC Program Sunnybrook Health Sciences Centre, University of Toronto , Toronto, Ontario, Canada
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Aljindan R, Bukharie H, Alomar A, Abdalhamid B. Prevalence of digestive tract colonization of carbapenem-resistant Acinetobacter baumannii in hospitals in Saudi Arabia. J Med Microbiol 2015; 64:400-406. [PMID: 25657302 DOI: 10.1099/jmm.0.000033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/25/2015] [Indexed: 11/18/2022] Open
Abstract
Carbapenem-resistant Acinetobacter baumannii is a major health problem worldwide, especially in intensive care units (ICUs). This study aimed to detect the prevalence of A. baumannii colonization of the gastrointestinal tract of patients admitted to the ICU in two hospitals in Saudi Arabia. In addition, it aimed to characterize the molecular mechanisms of carbapenem resistance in these isolates. From January to June 2014, 565 rectal swab specimens were screened for Acinetobacer strains and carbapenem resistance using CHROMagar Acinetobacter and CHROMagar KPC agar plates, respectively. Organism identification and susceptibility were detected using the Vitek 2 system. A total of 47 Acinetobacter spp. were detected, and 35 were resistant to carbapenem, making the prevalence of Acinetobacter spp. 8.3% (47/565) and carbapenem resistance (6.2%, 35/565). The 47 strains showed remarkable clonal diversity as revealed by PFGE. Using PCR, OXA-51, a chromosomal marker for A. baumannii, was detected in 46 strains. OXA-23 β-lactamase was detected in all 35 carbapenem-resistant A. baumannii. No IMP, VIM, SPM, SIM, GIM, KPC or NDM β-lactamases were detected in these isolates. Thus, OXA-23 was the main mechanism of carbapenem resistance in these isolates. To the best of our knowledge, this is the first study to detect the prevalence of Acinetobacter colonization in the digestive tract of ICU patients in Saudi Arabia. This study revealed the importance of having well-established protocols for early identification of these multidrug-resistant organisms, optimizing infection-control strategies and having active surveillance studies to reduce morbidity, mortality and cost.
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Affiliation(s)
- Reem Aljindan
- Department of Microbiology, College of Medicine, University of Dammam, PO Box 2208, AlKhobar, Kingdom of Saudi Arabia
| | - Huda Bukharie
- Department of Medicine, College of Medicine, University of Dammam, PO Box 2208, AlKhobar, Kingdom of Saudi Arabia
| | - Amer Alomar
- Department of Clinical Laboratory Science, College of Applied Medical Science, University of Dammam, PO Box 2208, AlKhobar, Kingdom of Saudi Arabia
| | - Baha Abdalhamid
- Department of Pathology and Laboratory Medicine, King Fahad Specialist Hospital, PO Box 15215, Dammam, Kingdom of Saudi Arabia
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Abstract
PURPOSE OF REVIEW Hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) continue to present very significant diagnostic and management challenges. The development, introduction and use of a wider range of immunosuppressive therapies are leading to a broader spectrum of microorganisms causing HAP and VAP. The persistent clinical dilemma regarding their cause is that detection of a microorganism from a respiratory tract sample does not necessarily signify it is the causative agent of the pneumonia. The ever-increasing antibiotic resistance problem means that HAP and VAP are becoming progressively more difficult to treat. In this article, we review the cause, antimicrobial resistance, diagnosis and treatment of HAP and VAP and encapsulate recent developments and concepts in this rapidly moving field. RECENT FINDINGS Although the microbial causes of HAP and VAP remain at present similar to those identified in previous studies, there are marked geographical differences. Resistance rates among Gram-negative bacteria are continually increasing, and for any species, multiresistance is the norm rather than the exception. The development and introduction of rapid point-of-care diagnostics may improve understanding of the cause of HAP and VAP and has immense potential to influence the treatment and clinical outcomes in HAP/VAP, with patients likely to receive much faster, microorganism-specific treatment with obvious downstream improvements to clinical outcome and antimicrobial stewardship. SUMMARY We describe recent trends in aetiology of HAP and VAP and recent trends in antimicrobial resistance, including resistance mechanisms causing particular concern. The potential for novel molecular diagnostics to revolutionize the diagnosis and treatment of HAP/VAP is discussed.
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Molecular epidemiology of carbapenem-resistant Acinetobacter baumannii isolates in the Gulf Cooperation Council States: dominance of OXA-23-type producers. J Clin Microbiol 2015; 53:896-903. [PMID: 25568439 DOI: 10.1128/jcm.02784-14] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The molecular epidemiology and mechanisms of resistance of carbapenem-resistant Acinetobacter baumannii (CRAB) were determined in hospitals in the states of the Cooperation Council for the Arab States of the Gulf (Gulf Cooperation Council [GCC]), namely, Saudi Arabia, United Arab Emirates, Oman, Qatar, Bahrain, and Kuwait. Isolates were subjected to PCR-based detection of antibiotic resistance genes and repetitive sequence-based PCR (rep-PCR) assessments of clonality. Selected isolates were subjected to multilocus sequence typing (MLST). We investigated 117 isolates resistant to carbapenem antibiotics (either imipenem or meropenem). All isolates were positive for OXA-51. The most common carbapenemases were the OXA-23-type, found in 107 isolates, followed by OXA-40-type (OXA-24-type), found in 5 isolates; 3 isolates carried the ISAba1 element upstream of blaOXA-51-type. No OXA-58-type, NDM-type, VIM-type, or IMP-type producers were detected. Multiple clones were detected with 16 clusters of clonally related CRAB. Some clusters involved hospitals in different states. MLST analysis of 15 representative isolates from different clusters identified seven different sequence types (ST195, ST208, ST229, ST436, ST450, ST452, and ST499), as well as three novel STs. The vast majority (84%) of the isolates in this study were associated with health care exposure. Awareness of multidrug-resistant organisms in GCC states has important implications for optimizing infection control practices; establishing antimicrobial stewardship programs within hospital, community, and agricultural settings; and emphasizing the need for establishing regional active surveillance systems. This will help to control the spread of CRAB in the Middle East and in hospitals accommodating transferred patients from this region.
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Balkhy HH, El-Saed A, Maghraby R, Al-Dorzi HM, Khan R, Rishu AH, Arabi YM. Drug-resistant ventilator associated pneumonia in a tertiary care hospital in Saudi Arabia. Ann Thorac Med 2014; 9:104-11. [PMID: 24791174 PMCID: PMC4005156 DOI: 10.4103/1817-1737.128858] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 01/05/2014] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND: There is a wide geographic and temporal variability of bacterial resistance among microbial causes of ventilator-associated pneumonia (VAP). The contribution of multi-drug resistant (MDR) pathogens to the VAP etiology in Saudi Arabia was never studied. We sought to examine the extent of multiple-drug resistance among common microbial causes of VAP. MATERIALS AND METHODS: We conducted a retrospective susceptibility study in the adult intensive care unit (ICU) of King Abdulaziz Medical City, Riyadh, Saudi Arabia. Susceptibility results of isolates from patients diagnosed with VAP between October 2004 and June 2009 were examined. The US National Healthcare Safety Network definition of MDR was adopted. RESULTS: A total of 248 isolates including 9 different pathogens were included. Acinetobacter spp. was highly (60-89%) resistant to all tested antimicrobials, including carbapenems (three- and four-class MDR prevalence were 86% and 69%, respectively). Pseudomonas aeruginosa was moderately (13-31%) resistant to all tested antimicrobials, including antipseudomonal penicillins (three- and four-class MDR prevalence were 13% and 10%, respectively). With an exception of ampicillin (fully resistant), Klebsiella spp. had low (0-13%) resistance to other tested antimicrobials with no detected MDR. Staphylococcus aureus was fully susceptible to vancomycin with 42% resistance to oxacillin. There were significant increasing trends of MDR Acinetobacter spp. however not P. aeruginosa during the study. Resistant pathogens were associated with worse profile of ICU patients but not patients’ outcomes. CONCLUSION: Acinetobacter in the current study was an increasingly resistant VAP-associated pathogen more than seen in many parts of the world. The current finding may impact local choice of initial empiric antibiotics.
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Affiliation(s)
- Hanan H Balkhy
- Department of Infection Prevention and Control, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia ; Gulf Cooperation Council States and WHO Collaborating Center for Infection Prevention and Control, Riyadh, Kingdom of Saudi Arabia ; King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Kingdom of Saudi Arabia ; Department of Pediatrics, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Aiman El-Saed
- Department of Infection Prevention and Control, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia ; Gulf Cooperation Council States and WHO Collaborating Center for Infection Prevention and Control, Riyadh, Kingdom of Saudi Arabia ; King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Kingdom of Saudi Arabia ; Department of Community Medicine, Faculty of Medicine, Mansoura University, Egypt
| | - Rana Maghraby
- Department of Pediatrics, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Hasan M Al-Dorzi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Kingdom of Saudi Arabia ; Department of Intensive Care, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Raymond Khan
- Department of Intensive Care, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Asgar H Rishu
- Department of Intensive Care, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Yaseen M Arabi
- King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Kingdom of Saudi Arabia ; Department of Intensive Care, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia
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Epidemiology of multi-drug resistant organisms in a teaching hospital in oman: a one-year hospital-based study. ScientificWorldJournal 2014; 2014:157102. [PMID: 24526881 PMCID: PMC3914445 DOI: 10.1155/2014/157102] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 10/20/2013] [Indexed: 12/31/2022] Open
Abstract
Background. Antimicrobial resistance is increasingly recognized as a global challenge. A few studies have emerged on epidemiology of multidrug resistant organisms in tertiary care settings in the Arabian Gulf. Aim. To describe the epidemiology of multi-drug resistant organisms (MDRO) at Sultan Qaboos University Hospital, a tertiary hospital in Oman. Methods. A retrospective review of MDRO records has been conducted throughout the period from January 2012 till December 2012. Organisms were identified and tested by an automated identification and susceptibility system, and the antibiotic susceptibility testing was confirmed by the disk diffusion method. Results. Out of the total of 29,245 admissions, there have been 315 patients registered as MDRO patients giving an overall prevalence rate of 10.8 (95% CI 9.3, 12.4) MDRO cases per 1000 admissions. In addition, the prevalence rate of MDRO isolates was 11.2 (95% CI 9.7, 12.9) per 1000 admissions. Overall, increasing trends in prevalence rates of MDRO patients and MDRO isolates were observed throughout the study period. Conclusion. Antimicrobial resistance is an emerging challenge in Oman. Continuous monitoring of antimicrobial susceptibility and strict adherence to infection prevention guidelines are essential to prevent proliferation of MDRO. Along such quest, stringent antibiotic prescription guidelines are needed in the country.
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Chaari A, Mnif B, Bahloul M, Mahjoubi F, Chtara K, Turki O, Gharbi N, Chelly H, Hammami A, Bouaziz M. Acinetobacter baumannii ventilator-associated pneumonia: epidemiology, clinical characteristics, and prognosis factors. Int J Infect Dis 2013; 17:e1225-8. [DOI: 10.1016/j.ijid.2013.07.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 06/27/2013] [Accepted: 07/19/2013] [Indexed: 01/31/2023] Open
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