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Zhang H, Wang Y, Zhang X, Xu C, Xu D, Shen H, Jin H, Yang J, Zhang X. Carbapenem-resistant Enterobacterales sepsis following endoscopic retrograde cholangiopancreatography: risk factors for 30-day all-cause mortality and the development of a nomogram based on a retrospective cohort. Antimicrob Resist Infect Control 2024; 13:84. [PMID: 39113089 PMCID: PMC11304701 DOI: 10.1186/s13756-024-01441-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 07/25/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Endoscopic retrograde cholangiopancreatography (ERCP) has become a routine endoscopic procedure that is essential for diagnosing and managing various conditions, including gallstone extraction and the treatment of bile duct and pancreatic tumors. Despite its efficacy, post-ERCP infections - particularly those caused by carbapenem-resistant Enterobacterales (CRE) - present significant risks. These risks highlight the need for accurate predictive models to enhance postprocedural care, reduce the mortality risk associated with post-ERCP CRE sepsis, and improve patient outcomes in the context of increasing antibiotic resistance. OBJECTIVE This study aimed to examine the risk factors for 30-day mortality in patients with CRE sepsis following ERCP and to develop a nomogram for accurately predicting 30-day mortality risk. METHODS Data from 195 patients who experienced post-ERCP CRE sepsis between January 2010 and December 2022 were analyzed. Variable selection was optimized via the least absolute shrinkage and selection operator (LASSO) regression model. Multivariate logistic regression analysis was then employed to develop a predictive model, which was evaluated in terms of discrimination, calibration, and clinical utility. Internal validation was achieved through bootstrapping. RESULTS The nomogram included the following predictors: age > 80 years (hazard ratio [HR] 2.61), intensive care unit (ICU) admission within 90 days prior to ERCP (HR 2.64), hypoproteinemia (HR 4.55), quick Pitt bacteremia score ≥ 2 (HR 2.61), post-ERCP pancreatitis (HR 2.52), inappropriate empirical therapy (HR 3.48), delayed definitive therapy (HR 2.64), and short treatment duration (< 10 days) (HR 5.03). The model demonstrated strong discrimination and calibration. CONCLUSIONS This study identified significant risk factors associated with 30-day mortality in patients with post-ERCP CRE sepsis and developed a nomogram to accurately predict this risk. This tool enables healthcare practitioners to provide personalized risk assessments and promptly administer appropriate therapies against CRE, thereby reducing mortality rates.
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Affiliation(s)
- Hongchen Zhang
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Yue Wang
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Xiaochen Zhang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Chenshan Xu
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Dongchao Xu
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Hongzhang Shen
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Hangbin Jin
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Jianfeng Yang
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China
- Hangzhou Institute of Digestive Disease, Zhejiang, China
| | - Xiaofeng Zhang
- The Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, No. 261 HuanSha Road, Zhejiang, China.
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, 310003, China.
- Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Zhejiang, China.
- Hangzhou Institute of Digestive Disease, Zhejiang, China.
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Li L, Huang X, Liu J, Li C, Lin Z, Ren R, Zhang Y, Ding H, Chen J, Mao Y. Efficacy and Safety Factors Related to Plasma Concentration-Optimized Polymyxin B Therapy in Treating Carbapenem-Resistant Gram-Negative Bacterial Infections in China. Infect Drug Resist 2024; 17:3057-3071. [PMID: 39050834 PMCID: PMC11268568 DOI: 10.2147/idr.s468890] [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: 05/16/2024] [Accepted: 07/11/2024] [Indexed: 07/27/2024] Open
Abstract
Background Polymyxin B (PMB)-based combination therapies are used to treat severe carbapenem-resistant gram-negative bacterial (CR-GNB) infections. This observational study investigated the relationship between clinical factors, including PMB concentration, and clinical efficacy and safety. Patients and Methods Polymyxin B regimens were optimized through therapeutic drug monitoring (TDM) and area under the concentration-time curve (AUC). In all, 382 samples were tested from 130 patients. Logistic regression was used to analyze the relationships between variables with clinical efficacy and 30-day mortality factors were analyzed by Cox regression. The sensitivity and specificity of Cmin and AUC for the occurrence of acute kidney injury (AKI) were determined by ROC curve analysis. Results The clinical effectiveness of PMB was 65.4%. Multivariate logistic regression analysis revealed that lung infection, continuous renal replacement therapy, and C-reactive protein were independent factors significantly associated with efficacy. AKI occurred in 14.6% of the patients during treatment; age > 73 years (OR: 3.63; 95% CI: 1.035-12.727; P = 0.044), Cmin greater than 2.3 µg/mL (OR: 7.37; 95% CI: 1.571-34.580; P = 0.011), combined vancomycin (OR: 9.47; 95% CI: 1.732-51.731; P = 0.009), and combined piperacillin-tazobactam (OR: 21.87; 95% CI: 3.139-152.324; P = 0.002) were independent risk factors. The identified PMB cut-offs for predicting AKI were Cmin = 2.3 µg/mL and AUC = 82.0 mg h/L. Conclusion Polymyxin B-based combination regimens are effective in treating CR-GNB infections, particularly bloodstream infections, but have shown unsatisfactory for lung infections. Cmin ≥ 2.3 µg /mL and AUC ≥ 82.0 mg h/L may increase PMB-associated AKI incidence. PMB dose should be adjusted based on TDM to ensure efficacy.
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Affiliation(s)
- Lixia Li
- Department of Pharmacy, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Xiaohui Huang
- Department of Pharmacy, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Jingxian Liu
- Department of Clinical Laboratory, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Chao Li
- Department of Pharmacy, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Zhiyan Lin
- Department of Pharmacy, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Rongrong Ren
- Department of Anesthesiology and SICU, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Yan Zhang
- Department of Anesthesiology and SICU, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Haoshu Ding
- Department of Anesthesiology and SICU, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Jihui Chen
- Department of Pharmacy, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Yanfei Mao
- Department of Anesthesiology and SICU, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
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Zhao YC, Wang CY, Liu JY, Li JK, Liu HY, Sun ZH, Zhang BK, Yan M. Factors affecting the effectiveness and safety of polymyxin B in the treatment of Gram-negative bacterial infections: A meta-analysis of 96 articles. Int J Antimicrob Agents 2024; 64:107262. [PMID: 38945178 DOI: 10.1016/j.ijantimicag.2024.107262] [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: 01/23/2024] [Revised: 05/19/2024] [Accepted: 06/21/2024] [Indexed: 07/02/2024]
Abstract
PURPOSE Polymyxin B, with its unique structure and mechanism of action, has emerged as a key therapeutic agent against Gram-negative bacteria. The study aims to explore potential factors to influence its effectiveness and safety. METHODS A model-based meta-analysis of 96 articles was conducted, focusing on factors like dosage, bacterial species, and combined antibiotic therapy. The analysis evaluated mortality rates and incidence rate of renal dysfunction, also employing parametric survival models to assess 30-d survival rates. RESULTS In the study involving 96 articles and 9716 patients, polymyxin B's daily dose showed minimal effect on overall mortality, with high-dose group mortality at 33.57% (95% confidence intervals [CI]: 29.15-38.00) compared to the low-dose group at 35.44% (95% CI: 28.99-41.88), P = 0.64. Mortality significantly varied by bacterial species, with Pseudomonas aeruginosa infections at 58.50% (95% CI: 55.42-63.58). Monotherapy exhibited the highest mortality at 40.25% (95% CI: 34.75-45.76), P < 0.01. Renal dysfunction was more common in high-dose patients at 29.75% (95% CI: 28.52-30.98), with no significant difference across antibiotic regimens, P = 0.54. The 30-d overall survival rate for monotherapy therapy was 63.6% (95% CI: 59.3-67.5) and 70.2% (95% CI: 64.4-76.2) for association therapy with β-lactam drugs. CONCLUSIONS The dosage of polymyxin B does not significantly change death rates, but its effectiveness varies based on the bacterial infection. Certain bacteria like P. aeruginosa are associated with higher mortality. Combining polymyxin B with other antibiotics, especially β-lactam drugs, improves survival rates. Side effects depend on the dose, with lower doses being safer. These findings emphasize the importance of customizing treatment to balance effectiveness and safety.
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Affiliation(s)
- Yi-Chang Zhao
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China
| | - Chen-Yu Wang
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia-Yi Liu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China
| | - Jia-Kai Li
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China
| | - Huai-Yuan Liu
- International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China; China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Zhi-Hua Sun
- International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China; China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Bi-Kui Zhang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China
| | - Miao Yan
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; International Research Center for Precision Medicine, Transformative Technology and Software Services, Changsha, Hunan, China.
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Liu J, Liu Y, Li C, Peng W, Jiang C, Peng S, Fu L. Characteristics of Klebsiella pneumoniae pyogenic liver abscess from 2010-2021 in a tertiary teaching hospital of South China. J Glob Antimicrob Resist 2024; 36:210-216. [PMID: 38154752 DOI: 10.1016/j.jgar.2023.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 12/06/2023] [Accepted: 12/18/2023] [Indexed: 12/30/2023] Open
Abstract
OBJECTIVES Pyogenic liver abscess (PLA) is a severe and potentially fatal infectious disease. Klebsiella pneumoniae (K. pneumoniae) is the predominant pathogen responsible for PLA. This study aims to investigate the clinical characteristics and prognostic factors of K. pneumoniae-induced pyogenic liver abscess (KP-PLA), particularly those caused by carbapenem-resistant K. pneumoniae (CRKP). METHODS Analyses were performed on PLA patients from January 2010 to December 2021, to investigate the differences of K. pneumoniae from other etiologically infected PLA patients. Univariate and multivariate logistic regression analyses were used to compare prognostic factors between patients with carbapenem-resistant K. pneumoniae PLA (CRKP-PLA) and patients with carbapenem-sensitive K. pneumoniae PLA. RESULTS Univariate analysis demonstrated a significant association between KP-PLA and factors including diabetes mellitus (P < 0.001), cholecystitis and cholelithiasis (P = 0.032), single abscess (P = 0.016), and abscesses with a diameter over 50 mm (P = 0.004). The CRKP group exhibited a higher prevalence of therapeutic interventions before K. pneumoniae infection, including abdominal surgery, mechanical ventilation, sputum suction, tracheal cannula, routine drainage of the abdominal cavity, and peripherally inserted central venous catheters (P < 0.05). Multivariate logistic regression analysis revealed that admission to the intensive care unit was an independent risk factor associated with CRKP-PLA (odds ratio 36; 95% confidence interval 1.77-731.56; P = 0.020). CONCLUSION The KP-PLA patients were significantly associated with diabetes and were more likely to have single abscesses larger than 50 mm. PLA patients with a history of admission to intensive care unit or invasive therapeutic procedures should be given special consideration if combined with CRKP infection.
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Affiliation(s)
- Jinqing Liu
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yao Liu
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chunhui Li
- Centre for Healthcare-Associated Infection Control, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wenting Peng
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chuan Jiang
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shifang Peng
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lei Fu
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China.
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Wu Y, Jiang S, Li D, Wu Y, Li Q, Wang X, Liu B, Bao H, Wu D, Hu X. Clinical Efficacy and Safety of Colistin Sulfate in the Treatment of Carbapenem-Resistant Organism Infections in Patients with Hematological Diseases. Infect Dis Ther 2024; 13:141-154. [PMID: 38212555 PMCID: PMC10828183 DOI: 10.1007/s40121-023-00909-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/15/2023] [Indexed: 01/13/2024] Open
Abstract
INTRODUCTION Carbapenem-resistant organisms (CRO) have emerged as a significant worldwide issue. However, the availability of efficacious antibiotics for treating CRO infections remains limited. Polymyxins, including colistin sulfate, represent the last-line therapeutic option against CRO infections. This study aims to retrospectively evaluate the clinical effectiveness and safety of colistin sulfate in managing CRO infections among patients with hematological diseases. METHODS Between April 2022 and January 2023, a total of 118 hematological patients diagnosed with CRO infection were treated with colistin sulfate at Suzhou Hongci Hospital of Hematology. The assessment encompassed the clinical efficacy, bacterial clearance rate, adverse reactions, and 30-day all-cause mortality. RESULTS The study found that the total effective rate of colistin sulfate in the treatment of CRO infection was 74.6%, with a bacterial clearance rate of 72.6%. Throughout the treatment, nephrotoxicity occurred in 7.6% of cases, neurotoxicity in 2.5% of cases, and the 30-day all-cause mortality rate was 22.9%. Multivariate logistic analysis revealed that the treatment course and combination medication with other antimicrobials were independent factors affecting the clinical efficacy of colistin sulfate. CONCLUSION Our study demonstrates that the treatment of colistin sulfate can achieve high clinical efficacy and microbial responses, with a low risk of nephrotoxicity. This study provides evidence of the positive clinical efficacy and safety of colistin sulfate treatment in these patients. High-quality randomized controlled trials are still needed to further confirm the beneficial role of colistin sulfate.
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Affiliation(s)
- Yuanbing Wu
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Shanshan Jiang
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Dongyang Li
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Yaxue Wu
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Qian Li
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Xing Wang
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Bin Liu
- Department of Hematology, The Hospital of Suzhou Hongci Hematology, Suzhou, 215000, Jiangsu, China
| | - Haiyan Bao
- Department of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, 215000, Jiangsu, China
| | - Depei Wu
- Department of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, 215000, Jiangsu, China.
| | - Xiaohui Hu
- Department of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, 215000, Jiangsu, China.
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Zheng Y, Xu B, Chen S, Liu M, Huang H, Wang J, Wu X. Population Pharmacokinetic Modeling Using Polymyxin B Free Plasma Concentrations From Published Reports and Evaluation of Dosage Regimens Based on Monte Carlo Simulation in Critically Ill Patients. J Clin Pharmacol 2023; 63:1036-1044. [PMID: 37125471 DOI: 10.1002/jcph.2261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/02/2023]
Abstract
A population pharmacokinetic (pop PK) model of polymyxin B was developed using nonlinear mixed-effects (NONMEM) modeling based on free plasma concentrations to determine whether dose adjustment is required in critically ill patients. One thousand pharmacokinetic profiles for virtual patients with a body weight of 70 kg were simulated using Monte Carlo simulation at different dose scenarios, and area under the concentration-time curve of free drug (fAUC) was computed. The probability of target attainment (PTA) at each minimum inhibitory concentration (MIC) was calculated using fAUC/MIC as a pharmacokinetic/pharmacodynamic (PK/PD) index. The final population PK model was a 2-compartment model. PTA showed that 3.5 mg/kg/day regimens of polymyxin B effectively achieved the fAUC/MIC target of 10 (one log10 kill) against Pseudomonas aeruginosa strains with MIC of 1 mg/L or less (PTA, 90.7% or greater), while the dose regimen were ineffective against strains with an MIC of 2 mg/L or greater (PTA, 56.9% or less). For Klebsiella pneumoniae, the fAUC/MIC target of 17.4 (one log10 kill) was achieved in more than 90.4% of cases for MIC of 0.5 mg/L or less with 3 mg/kg/day regimens. However, the PTA decreased dramatically as MICs increased above 1 mg/L (PTA, 56.1% or less). The polymyxin B dosage regimen of 3.5 mg/kg/day and 3 mg/kg/day are sufficient to treat P. aeruginosa infections with an MIC of 1 mg/L or less and K. pneumoniae infections with an MIC of 0.5 mg/L or less, respectively. The current recommended dose (1.5-3 mg/kg/day) of polymyxin B appears inadequate to attain the PK/PD target for therapeutic efficacy against infections caused by P. aeruginosa and K. pneumoniae isolates when MIC is above the values.
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Affiliation(s)
- You Zheng
- Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- School of Pharmacy, Fujian Medical University, Fuzhou, Fujian, China
| | - Baohua Xu
- Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- School of Pharmacy, Fujian Medical University, Fuzhou, Fujian, China
| | - Shengyang Chen
- Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- School of Pharmacy, Fujian Medical University, Fuzhou, Fujian, China
| | - Maobai Liu
- Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Huiping Huang
- Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- School of Pharmacy, Fujian Medical University, Fuzhou, Fujian, China
| | - Jingting Wang
- College of Pharmacy, University of Michigan, Ann Arbor, Michigan, USA
| | - Xuemei Wu
- Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
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Jia X, Yin Z, Zhang W, Du S. The Efficacy and Influencing Factors of Polymyxin B in High-Level Carbapenem-Resistant Klebsiella pneumoniae Infections. Infect Drug Resist 2023; 16:4177-4187. [PMID: 37396067 PMCID: PMC10314750 DOI: 10.2147/idr.s409090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/30/2023] [Indexed: 07/04/2023] Open
Abstract
Background Polymyxin B (PMB) is a remedial treatment for carbapenem-resistant Klebsiella pneumoniae (CRKP) infection; however, there is a paucity of reports on the treatment of high-level CRKP infections with polymyxin B. Studies are needed to explore its treatment efficacy and associated influencing factors. Methods Patients with high-level CRKP infections treated with PMB during hospitalization from June 2019 to June 2021 in a hospital were retrospectively studied, and risk factors affecting the efficacy were explored by subgroup analysis. Results A total of 92 patients were enrolled, and the results showed that the PMB-based regimen had a bacterial clearance rate of 45.7%, an all-cause discharge mortality rate of 22.8%, and an incidence of acute kidney injury (AKI) of 27.2% for high-level CRKP treatment. The combination of β-lactams other than carbapenems facilitated bacterial clearance, and the combination of electrolyte disturbances and higher APACHE II scores was detrimental to microbial clearance. Risk factors for all-cause discharge mortality were advanced age, concomitant antifungal drugs, concomitant tigecycline and incidence of AKI. Conclusion PMB-based regimens are an effective option for the treatment of high-level CRKP infections. However, the optimal dose of treatment and the choice of combination regimens need to be explored in further studies.
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Affiliation(s)
- Xuedong Jia
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
- The Precision Clinical Pharmacy Key Laboratory of Henan Province, Zhengzhou, People’s Republic of China
| | - Zhao Yin
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
- The Precision Clinical Pharmacy Key Laboratory of Henan Province, Zhengzhou, People’s Republic of China
| | - Wan Zhang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
- The Precision Clinical Pharmacy Key Laboratory of Henan Province, Zhengzhou, People’s Republic of China
| | - Shuzhang Du
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
- The Precision Clinical Pharmacy Key Laboratory of Henan Province, Zhengzhou, People’s Republic of China
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Lu X, Zhong C, Liu Y, Ye H, Qu J, Zong Z, Lv X. Efficacy and safety of polymyxin E sulfate in the treatment of critically ill patients with carbapenem-resistant organism infections. Front Med (Lausanne) 2022; 9:1067548. [PMID: 36643845 PMCID: PMC9834999 DOI: 10.3389/fmed.2022.1067548] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/13/2022] [Indexed: 12/30/2022] Open
Abstract
Objective Polymyxins are currently the last line of defense in the treatment of carbapenem-resistant organisms (CRO). As a kind of polymyxin available for clinical use in China, we aim to explore the efficacy and safety of colistin sulfate (Polymyxin E sulfate, PES) in this study. Methods This real-world retrospective study included 119 patients diagnosed with CRO infection and treated with PES for more than 72 h, from May 2020 to July 2022 at West China Hospital. The primary outcome was clinical efficacy at the end of treatment, and secondary outcomes included microbial response, in-hospital mortality and incidence of nephrotoxicity. Results The effective clinical and microbiological responses were 53.8% and 49.1%, respectively. And the in-hospital mortality was 27.7%. Only 9.2% of patients occurred with PES-related nephrotoxicity. Multivariate analysis revealed that duration of PES was an independent predictor of effective therapy, while age-adjusted Charlson comorbidity index (aCCI) and post-treatment PCT(p-PCT) were independent risk factors for poor outcome. Conclusions PES can be a salvage treatment for CRO-induced infections with favorable efficacy and low nephrotoxicity. The treatment duration of PES, aCCI and p-PCT were factors related to the clinical effectiveness of PES.
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