Prevention Of Ventilator-associated Pneumonia Research Articles

Identifying the Bundle/Care Development Process in Clinical Risk Management: A Systematic Review

Background: A bundle is a set of three to five evidence-based interventions designed to improve the quality and outcomes of care processes. Numerous international studies have evaluated the effectiveness of Bundles/Care Bundles (BCB) in reducing morbidity and mortality. The Institute for Healthcare Improvement (IHI) has defined the concept of a bundle but has not outlined the development process. Objective: To identify the BCB development process in clinical risk scenarios from September 2005 to September 2023. Methods: A systematic review was conducted following PRISMA guidelines to identify studies describing the BCB development process in managing clinical risk situations. The databases consulted included PubMed, Embase, and CINAHL, along with manual searches on institutional websites. Relevant studies concerning the BCB development process were included. Results: A total of 1372 studies were retrieved, of which 16 were included. Duplicates were removed, and titles and abstracts were analyzed. The identified methods for BCB development include IHI guidelines, expert opinions, international guidelines, and flowcharts. The most common BCBs relate to the prevention of ventilator-associated pneumonia, surgical site infections, catheter-associated infections, and sepsis. Conclusions: This study has identified the development processes of Care Bundles (BCBs) in clinical risk scenarios, highlighting how these tools facilitate compliance monitoring among members of the healthcare team. The review has revealed effective methods for designing evidence-based BCBs. However, the scarcity of studies on the methodology for developing BCBs is a limitation, suggesting the need for further research. In Italy, there is a growing interest in the use of care packages. It is essential to encourage research that optimizes the effectiveness of intervention strategies.

ASSESSMENT OF KNOWLEDGE REGARDING EVIDENCE BASED GUIDELINES ON VAP PREVENTION AMONG NURSES

Ventilator-associated pneumonia (VAP) is a serious healthcare-associated infection that increases morbidity, mortality, and healthcare costs, particularly in intensive care units (ICUs). In Pakistan, the high prevalence of VAP in ICUs underscores the importance of adherence to evidence-based preventive practices among nursing staff. However, knowledge gaps and inconsistencies in VAP preventive practices remain a challenge, largely due to limited training resources and high patient-to-nurse ratios. Objective: This study aimed to assess the knowledge of ICU nurses on evidence-based guidelines for VAP prevention at a tertiary care hospital in Lahore, Pakistan. Methods: A descriptive cross-sectional study design was utilized. Data were collected from 140 registered nurses working in the ICU of Sir Ganga Ram Hospital, Lahore, using a structured questionnaire consisting of 17 questions related to VAP prevention guidelines. Convenience sampling was employed to recruit participants who met the inclusion criteria. Data analysis was performed using SPSS, with descriptive statistics applied to summarize findings and identify knowledge gaps. Results: The study revealed varied levels of knowledge among ICU nurses regarding VAP prevention. While the majority demonstrated awareness of core practices, such as semi-recumbent positioning and regular oral care, there were notable gaps in understanding related to the frequency of ventilator circuit changes and the optimal use of suction systems. Approximately 67.9% of nurses were aware of general VAP guidelines, but only 47.1% correctly identified all recommended practices. Additionally, knowledge disparities were observed based on educational background and years of ICU experience.Conclusion: This study highlights critical knowledge gaps among ICU nurses regarding evidence-based VAP prevention practices. The findings underscore the need for targeted educational interventions and standardized training programs to improve adherence to VAP guidelines. Strengthening nurse education on VAP prevention can contribute to reduced infection rates, enhanced patient safety, and better utilization of healthcare resources in Pakistan’s ICUs.

Multifaceted Control Interventions for Healthcare-associated Infections in a Kidney Transplant Intensive Care Unit: Clinical Outcome Improvement and Bundle Adherence.

Healthcare-associated infections (HAIs) are preventable complications that overwhelm the healthcare system. The implementation of multifaceted control intervention actions in the intensive care setting modifies clinical outcomes, but its effectiveness has not been specifically investigated for high-risk patients, such as kidney transplant recipients (KTRs). This observational retrospective natural experiment evaluated the effectiveness of multifaceted control interventions (bundles) in reducing HAIs in a KTR intensive care unit. We also measured the bundle adherence rate during 16 mo in the after era. We included 1257 KTRs, 684 before and 573 in the postintervention period. After the bundle implementation, the incidence density of device-associated HAIs decreased from 8.5 to 3.9 per 1000 patient-days (relative risk [RR] = 0.46; 95% confidence interval [CI], 0.25-0.85; P = 0.01), primarily because of the reduction in central line-associated bloodstream infection from 8.0 to 3.4 events per 1000 catheter-days (RR = 0.43; 95% CI, 0.22-0.83; P = 0.012). Reductions in catheter-associated urinary tract infection (2.5 versus 0.6 per 1000 catheter-days; RR = 0.22; 95% CI, 0.03-1.92; P = 0.17) and ventilator-associated pneumonia (3.4 versus 1.0 per 1000 ventilator-days; RR = 0.29; 95% CI, 0.03-2.63; P = 0.27) were not significant. Central venous (P = 0.53) and urinary catheter (P = 0.47) insertion adherence were stable during 16 mo, whereas central venous (P < 0.001) and urinary catheter (P = 0.004) maintenance gradually increased. Finally, ventilator-associated pneumonia prevention bundle adherence slightly decreased over time (P = 0.06). The implementation of comprehensive multifaceted control intervention actions in an intensive care unit dedicated to KTR care was effective in significantly reducing device-associated infections. The impact was in line with the reductions observed in populations that have not undergone transplantation, underscoring the effectiveness of these interventions across different patient groups.

Tissue-Compatible and Lubricated Hydrogel Catheter with Promising Activity Against Polymicrobial Infections for Ventilator-Associated Pneumonia Prevention.

Endotracheal intubation is a vital means of saving critically ill patients. However, the inserted catheter often causes tissue damage and the formation of tenacious biofilms containing drug-resistant bacteria and fungi, leading to severe ventilator-associated pneumonia (VAP). Currently, the resolution of VAP is usually based on antibiotic treatment and lacks targeted prophylaxis. Here, a quaternary phosphonium salts functionalized hydrogel catheter that enhances tissue compatibility yet inhibits complex and tenacious pathogens in the catheter, thus preventing VAP is reported. By copolymerizing the quaternary phosphonium electrolyte and acrylic acid monomers, the hydrogel catheter demonstrates good shape-supporting ability, and its strength and modulus can be adjusted over a wide range to meet the needs of different ages. Moreover, it possesses good tissue compatibility, antifouling properties, stable lubrication capability, and superior hydrophilicity, which may mitigate tissue damage caused by contact. Importantly, the hydrogel catheter demonstrates potent broad-spectrum intrinsic antimicrobial activity, eradicating nearly 99% of multi-drug resistant bacteria and 80% of fungi. To validate its role in preventing VAP, the real VAP pathogenesis process is mimicked, establishing a polymicrobial infections model considering time effects. The results prove that the hydrogel catheter effectively inhibits the invasion of various drug-resistant pathogens and prevents biofilm formation.

Development of ventilator-associated pneumonia (VAP) prevention model in the hospital based on Six Sigma and VAP Bundle

Background &amp; Objective: Ventilator-Associated Pneumonia (VAP) is the leading cause of death in Healthcare-Associated Infections (HCAI), with 30-day mortality of 59% of patients with ventilator devices. The aim of this research was to develop a VAP prevention model in the intensive care unit (ICU) based on Six Sigma and VAP Bundle, involving individual, organizational and work characteristics factors. Methodology: This research was carried out in the ICU, Poltekkes Kemenkes Malang, Malang, Indonesia, using a cross-sectional design. The research subjects were nurses, selected using a simple random sampling technique. All variables were measured through filling out questionnaires. Next, the measurement data was analyzed using Partial Least Square (PLS), based on Six Sigma and VAP Bundle. Results: Based on Six Sigma and VAP Bundle, the results of the analysis of the effects of the three factors on the implementation of VAP prevention were: 1) for individual factors, path coefficient = 0.189 and P = 0.000, so it was interpreted that this factor had a significant effect on the implementation of VAP prevention; 2) for organizational factors, path coefficient = 0.496 and P = 0.003, so it was interpreted that this factor also had a significant effect; 3) for the work characteristics factors, path coefficient = 0.289 and P = 0.000, so this factor also had a significant effect on the implementation of VAP prevention. Conclusion: Based on the research results, a VAP prevention model based on Six Sigma and VAP bundle was successfully built in the ICU, which involved organizational factors, work characteristics and individual factors. Abbreviations: HCAI - Healthcare-Associated Infections; HAP - Hospital-acquired pneumonia; PLS - Partial Least Square; SOP - standard operating procedure; VAP - ventilator-associated pneumonia; Keywords: Ventilator-Associated Pneumonia, VAP, Prevention; Six Sigma, VAP Bundle; Intensive Care Unit; organizational factors; work characteristics; individual factors Citation: Yuswanto TJA, Ernawati N, SolikhahFK, Nugroho HSW. Development of a prevention model for ventilator-associated pneumonia based on Six Sigma and VAP bundle. Anaesth. pain intensive care 2024;28(5):876−882; DOI: 10.35975/apic.v28i5.2574 Received: July 14, 2024; Reviewed: July 28, 2024; Accepted: July 28, 2024

Evaluation of ventilator-associated pneumonia care practice in the intensive care units of a comprehensive specialized hospital in Northwest Ethiopia: a 1.5-year prospective observational study.

Nosocomial infections pose a global health threat, with Ventilator-Associated Pneumonia (VAP) emerging as a prominent hospital-acquired infection, particularly in intensive care units (ICU).VAP is the commonest form of pneumonia in ICUs, contributing significantly to morbidity and mortality rates, which can reach around 30%. Despite the substantial impact of VAP on healthcare, there is a lack of data on adherence to VAP prevention protocols in our hospital. Consequently, this study aims to assess the adherence to ventilator-associated pneumonia care bundles in critical care units at a comprehensive specialized hospital in northwest Ethiopia. A hospital-based prospective observational study was conducted from July 3, 2022, to January 7, 2024. All adult patients who were on mechanical ventilators for more than 48h during the study period were included. Data were collected using the Institute of Healthcare Improvement VAP prevention standards as checklists via direct observation and chart review. The data were entered and analyzed using SPSS version 20. A total of 300 surgical and medical ICU patients were observed. Among the patients, 66.3% were from the medical ICU. In terms of admission reasons, 22.3%, 15.7% and, 12% were attributed to infections excluding respiratory origin, respiratory disorders, and other causes, respectively. The rate of compliance with all components of the bundle was 70%. A 100% adherence rate was observed for the prophylaxis for peptic ulcer and deep vein thrombosis (DVT). The lowest adherence rate was observed in the practice of oral hygiene with 0.5% chlorhexidine solution (0%) followed by humidification with heat and moisture exchangers (23.3%). Endotracheal tube cuff pressure measurement and use of endotracheal tubes with subglottic suction were not applicable. The study revealed suboptimal compliance with the VAP care bundle, indicating unsatisfactory overall practice. Specific attention is warranted for subglottic suction, cuff pressure measurement, humidification, oral care with chlorhexidine, and sedation vacation.

Comparison of Oral Care with Suction Sponge Swabs and Standard Sponge Swabs for the Prevention of Ventilator-Associated Pneumonia: Quasi-Experimental Trial

Comparison of Oral Care with Suction Sponge Swabs and Standard Sponge Swabs for the Prevention of Ventilator-Associated Pneumonia: Quasi-Experimental Trial

Major Publications in the Critical Care Pharmacotherapy Literature: 2023.

We aimed to summarize the most significant and impactful publications describing the pharmacotherapeutic care of critically ill patients in 2023. PubMed/MEDLINE and the Clinical Pharmacy and Pharmacology Pharmacotherapy Literature Update. Randomized controlled trials and prospective studies of adult critically ill patients assessing a pharmacotherapeutic intervention and reporting clinical endpoints published between January 1, 2023, and December 31, 2023, were eligible for inclusion in this article. Articles from a systematic search and the Clinical Pharmacy and Pharmacology Pharmacotherapy Literature Update were included. An a priori defined three-round modified Delphi process was employed to achieve consensus on the most impactful publications based on the following considerations: 1) overall contribution to scientific knowledge and 2) novelty to the literature. The systematic search and Clinical Pharmacy and Pharmacology Pharmacotherapy Literature Update returned a total of 1202 articles, of which 1164 were excluded. The remaining 38 articles underwent a three-round modified Delphi process. In each round, articles were independently scored based on overall contribution to scientific knowledge and novelty to the literature. Included articles are summarized and their impact discussed. Article topics included hydrocortisone for severe community-acquired pneumonia, inhaled amikacin for prevention of ventilator-associated pneumonia, methylene blue for septic shock, restrictive vs. liberal fluid management for sepsis-induced hypotension, andexanet alfa for major bleeding associated with factor Xa inhibitors, and early administration of four-factor prothrombin complex concentrate in patients with trauma at risk for massive transfusion. This review provides a summary and perspective on the potential impact of the most relevant articles in 2023 describing advances in the pharmacotherapeutic care of critically ill patients.

Nursing Knowledge and Preventive Practices of Ventilator-Associated Pneumonia as Perceived by Intensive Care Nurses in Hail City, KSA

Context: Ventilator-associated Pneumonia (VAP) is a recognized nosocomial infection and a leading cause of high morbidity and mortality. Intensive Care Unit (ICU) nurses are in the best position to put the known evidence-based strategies into practice to prevent VAP. Aim: The study assessed nursing knowledge and preventive practices of ventilator-associated pneumonia as perceived by intensive care nurses in Hail City, Saudi Arabia. Methods: Data were collected using a descriptive cross-sectional research design. The study was conducted in intensive care units of Government hospitals in Hail City on a convenient sample of all available critical care nurses who met the inclusion criteria during the data collection period. The sample size (n) for this analysis was 84. Data were collected using a structured interview questionnaire including sociodemographic data and nurses' knowledge of VAP. The second tool is nurses’ practice observational checklist regarding VAP prevention. Results: revealed that age median (IQR) is 30(6), median years of experience (IQR) 6(6), 67.9% had received VAP prevention training, and 78.6% had received information for preventing VAP. The study also reveals that 38.09% of the nurses had poor knowledge regarding VAP prevention, and they had a good median (IQR) 6(4) in the preventive practice of VAP. Age, experience in nursing, in the ICU, training on VAP prevention, and receiving information on preventing VAP significantly affected nurses' knowledge about preventing VAP in ICU patients. Experience in ICU and educational institutions as source of information and more than one source of information significantly affect the nurses' total preventive practice regarding VAP. Correlation analysis between overall knowledge and practice indicates no statistically significant correlation (the p-value for the correlation was 0.060). Conclusion: Over one-third of the nurses had poor knowledge regarding VAP. The study recommended that there should be in-service training and periodic educational programs targeting nurses to improve nurse’s knowledge and practices regarding VAP guidelines by the Ministry of Health.

Fiberoptic bronchoscopy for the prevention of ventilator-associated pneumonia: a meta-analysis of randomized controlled trials.

Ventilator-associated pneumonia (VAP) causes increased time of mechanical ventilation (MV), prolonged intensive care unit (ICU) stay, and a higher mortality risk. The systematic review and meta-analysis aimed to compare the efficacies between fiberoptic bronchoscopy (FOB) and general sputum suction for the prevention of VAP in patients with invasive MV. Relevant randomized controlled trials (RCTs) were obtained via a search of PubMed, Embase, Cochrane Library, Wanfang, and CNKI databases. A random-effects model was used to pool the results if significant heterogeneity was observed. Otherwise, a fixed-effects model was used. Sixteen RCTs were included. Compared to general sputum suction, sputum suction with FOB was associated with a significantly reduced risk of VAP (risk ratio [RR]: 0.56, 95% CI: 0.47 to 0.67, p < 0.001; I2 = 0%). Subgroup analyses showed that the combination of FOB-assisted sputum suction with bronchoalveolar lavage (BAL) further reduced the risk of VAP as compared to FOB-assisted sputum suction alone (p for subgroup difference = 0.04). In addition, FOB-assisted treatment was also associated with a reduced MV time (mean difference [MD]: -2.19 days, 95% CI: -2.69 to -1.68, p < 0.001; I2 = 18%), a shorter ICU stay (MD: 2.9 days, 95% CI: -3.68 to -2.13, p < 0.001; I2 = 34%), and a reduced mortality risk (RR: 0.46, 95% CI: 0.24 to 0.90, p = 0.02; I2 = 0%) in patients with invasive MV. FOB for sputum suction and BAL in patients with invasive MV is effective in reducing the incidence of VAP.

Polymyxin B Peptide Hydrogel Coating: A Novel Approach to Prevent Ventilator-Associated Pneumonia.

Ventilator-associated pneumonia (VAP) remains one of the most common hospital-acquired infections (HAI). Considering the complicated diagnosis and the lack of effective treatment, prophylactic measures are suggested as the new standard to prevent the disease. Although VAP often manifests a polymicrobial nature, Pseudomonas aeruginosa remains one of the pathogens associated with the highest morbidity and mortality rates within these mechanically ventilated patients. In this paper, we report on the development of an antibacterial hydrogel coating using the polymyxin B (PMB) peptide to prevent bacterial adhesion to the polymeric substrate. We fully characterized the properties of the coating using atomic force microscopy (AFM), scanning electron microscopy (SEM), wettability analyses and Fourier-transform infrared (FTIR) and Raman spectroscopy. Furthermore, several biological assays confirmed the antibacterial and anti-biofilm effect of the tubing for at least 8 days against P. aeruginosa. On top of that, the produced coating is compliant with the requirements regarding cytocompatibility stated in the ISO (International Organization for Standardization) 10993 guidelines and an extended release of PMB over a period of at least 42 days was detected. In conclusion, this study serves as a foundation for peptide-releasing hydrogel formulas in the prevention of VAP.

Prevalence and etiology of ventilator-associated pneumonia during the COVID-19 pandemic in Denmark: Wave-dependent lessons learned from a mixed-ICU.

Ventilator-associated pneumonia (VAP) may be a particular concern in patients with severe coronavirus disease 2019 (COVID-19). We aimed to determine the prevalence and etiology of VAP in critically ill COVID-19 patients in a Danish intensive care unit (ICU) during the first three waves of the COVID-19 pandemic and to study associations between dexamethasone (DXM) use and development of VAP. In an observational single-center study patients were retrospectively screened for VAP including causative pathogens, use of DXM and commonly used antibiotics. Diagnosis of VAP required invasive mechanical ventilation (IMV) >48 h with presence of a new bacterial agent and clinical signs of infection. For analysis, common descriptive statistics were applied. Cox proportional hazards models were used to analyze the association between DXM use and VAP. VAP was detected in 53/119 (44.5%) mechanically ventilated patients across all three COVID-19 waves. Median length of IMV for VAP patients was 24 [15-41] days, and 3 out of 4 were males. VAP was most prevalent (47.0%) during the second wave. Common pathogens included Klebsiella pneumoniae (24.5%), Enterobacter aerogenes (17.0%) and Pseudomonas aeruginosa (13.2%), Staphylococcus aureus (13.2%), and Escherichia coli (13.2%). A change from Gram-negative bacteria only to a combination of Gram-positive and Gram-negative bacteria was observed in the second wave compared to first. Use of DXM was not associated with VAP (adjusted hazard ratio 1.63 95% CI: 0.84-3.17). The prevalence of VAP was high across all three COVID-19 waves and showed a different distribution of pathogens between the first and second wave. Use of DXM was not associated with VAP development. Further and larger studies are needed to understand the risk factors associated with VAP in patients with COVID-19.

Noble element coatings on endotracheal tubes for ventilator-associated pneumonia prevention: A systematic review and meta-analysis of randomized controlled trials in emergency care settings.

Ventilator-associated pneumonia (VAP) is the second most prevalent nosocomial infection in emergency care settings. An emerging strategy to reduce this risk involves coating endotracheal tubes (ETTs) with noble elements, leveraging the antimicrobial properties of elements such as silver, gold, and palladium. This systematic review and meta-analysis aimed to evaluate the effectiveness of noble element coatings on ETTs in reducing VAP incidence rates, mortality, duration of mechanical ventilation, and length of stay in the intensive care unit (ICU). Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, a comprehensive search was conducted across 5 databases up to 2024. The quality of the randomized controlled trials was assessed using the updated Cochrane Risk of Bias (RoB) 2 tool. A random-effects meta-analysis was performed using RevMan 5.4 Comprehensive Meta-Analysis software. Statistical heterogeneity among the studies was evaluated using the Higgins I2 value, with P < .05 indicating statistical significance. Seven randomized controlled trials from 5 countries were identified. Four studies had some concerns regarding bias, 2 had a high RoB, and 1 had a low RoB. Noble metal-coated ETTs resulted in a lower incidence of VAP compared to noncoated ETTs (relative risk, 0.76 [95% confidence interval [CI], 0.60-0.96]). However, there was no significant difference in mortality rates (relative risk, 1.06 [95% CI, 0.93-1.20]), duration of mechanical ventilation (mean difference, -0.10 [95% CI, -1.62 to 1.41]), and ICU stay (mean difference, 0.07 [95% CI, -1.98 to 2.12]). Noble metal-coated ETTs effectively reduce the incidence of VAP but do not significantly impact mortality rates, the duration of mechanical ventilation, or ICU stay. Therefore, these coated ETTs should be integrated into a holistic care plan addressing all aspects of patient management in emergency care settings.

Adult intensive care unit nurses' knowledge of and compliance barriers to evidence-based guidelines for prevention of ventilator-associated pneumonia: A cross-sectional survey.

Ventilator-associated pneumonia (VAP) is the most common nosocomial infection in intensive care units (ICUs) and is a common cause of morbidity and mortality in intensive care patients. Previous studies show that insufficient knowledge and compliance barriers among nurses affect pneumonia. There have been no investigations into intensive care nurses' knowledge and compliance barriers to evidence-based guidelines (EBGs) for VAP prevention in county-level hospitals in China. To explore adult ICU nurses' knowledge and compliance barriers to EBGs for preventing VAP in county-level hospitals in Hunan Province, China, examine the correlation between knowledge and compliance barriers, and analyse associated factors. A cross-sectional electronic survey was conducted to focus on nurses' knowledge of and compliance barriers to EBGs for preventing VAP. A total of 386 valid questionnaires were collected, with a response rate of 97.47% (386/396 = 97.47%). The median scores for nurses' knowledge (out of 9) and compliance barriers (out of 8) to EBGs for preventing VAP were 7 (interquartile range: 5-8) and 3 (interquartile range: 2-4), respectively. Knowledge was negatively associated with compliance barriers (r = -0.437, p < .01). The results of the multiple linear regression analysis showed that hospital level, age, nurses' attendance at VAP training and years of experience in ICUs were related to the level of knowledge. Nurses' attendance at VAP training, age and years of experience in ICUs were associated with the level of compliance barriers. Intensive care nurses have satisfactory knowledge of EBGs for preventing VAP, but compliance barriers can be reduced. Better knowledge helps reduce the barriers to compliance among nurses. Nurse managers and nurse educators are suggested to examine nurses' knowledge and compliance barriers to EBGs for preventing VAP, develop personalized training plans, promote continuous education based on the latest EBGs and raise the nurse-patient ratio reasonably.

Effect of Compliance to Ventilator Bundle Care in Decreasing Ventilator-associated Pneumonia Rates in a Neonatal Intensive Care Unit: A Quality Improvement Initiative

Purpose Prevention of ventilator-associated pneumonia (VAP) can be achieved by a group of evidence-based interventions known as the “VAP bundle.” In this study, we observed the effect of increasing compliance to bundle care in reducing VAP rates. Methods We did a quality improvement (QI) study in an outborn level 3 neonatal intensive care unit (NICU) enrolling 95 neonates less than 28 days of life; and receiving ventilator care for more than 2 days of hospitalization in NICU. A standardized VAP bundle was implemented with the goal of decreasing VAP rates in NICU. A total of 45 neonates were enrolled in the pre-bundle study group (Group I) and 50 in post-bundle study group (Group II). Results Average bundle compliance increased to 62.26 ± 8.31% in Group II from a baseline compliance value of 52.6 ± 6.87% in Group I ( P &lt; .05). VAP rate was reduced from 37.6 per 1000 MV days (Mechanical Ventilation days) to 25.5 per 1000 MV days ( P &lt; .05). Conclusion Increased compliance to ventilator bundle care leads to a decreased VAP rate resulting in shortening of the MV days per case, decreasing duration of hospital stay, and reducing antibiotic course duration, thereby better employing the health care resources in neonatal care.

Prevalence and risk factors for ventilator-associated pneumonia after cardiac surgery: a systematic review and meta-analysis.

There is currently significant variation in the reported incidence of ventilator-associated pneumonia (VAP) among postoperative cardiac patients. Moreover, the risk factors for VAP in postoperative cardiac patients remain controversial. This study aims to assess the incidence and risk factors of VAP in postoperative cardiac patients to provide a basis for further prevention and treatment of VAP. We systematically reviewed PubMed, EMBASE, and Cochrane Library databases to select studies that met the inclusion criteria until November 2023. Fifteen studies involving 10,478 patients who underwent cardiac surgery were selected for meta-analysis. The incidence of VAP in postoperative cardiac patients was 10%. The preoperative risk factors for VAP after cardiac surgery included age >70 years, chronic obstructive pulmonary disease (COPD), peripheral vascular disease, renal disease, and severe pulmonary hypertension. Furthermore, the perioperative risk factors for VAP after cardiac surgery included emergency surgery, redo surgery, airway instrumentation, gastric aspiration, reintubation, mechanical ventilation duration >3 days, intra-aortic balloon, New York Heart Association >3, American Society of Anesthesiologists >3, need for transfusion during surgery, and ascending aortic surgery. The incidence of VAP after cardiac surgery was found to be 10%, and the comprehensive risk factors for VAP were identified, emphasizing the critical need for targeted interventions, including optimization of preoperative health and refined surgical protocols, to effectively reduce the occurrence of VAP in postoperative cardiac patients.

A multimodal interventional strategy for prevention of ventilator associated pneumonia: a study from a tertiary care hospital in South India

Ventilator associated pneumonia (VAP) is the second most commonly encountered HAI after CAUTI. A robust system in place for prevention of VAP will not only bring down nosocomial mortality significantly but also reduce the burden on the healthcare system, cut the cost of medical expenditure and reduce the length of stay in hospitals. The present interventional study was conducted in adult Medical ICUs of a tertiary care hospital and the study demonstrated a statistically significant improvement in reducing VAE rate following a multimodal educational intervention involving all types of HCWs in the adult medicine ICU of a tertiary care hospital, South India. We observed that the care bundle compliance was considerably low in ICUs. However, intervention approaches, such as the ones employed in this study effectively improved care bundle compliance in our ICUs. Through overall analysis, there was significant reduction of VAE rate in this study and hence, a continuous monitoring system and education of the staff should exist to reduce the incidence of VAP in hospitals and the same strategy can be employed in other areas of hospital as well for prevention of other nosocomial infections like Catheter associated urinary tract infections, central line associated bloodstream infections and so on. The methodology of this study can be extended to the other ICUs including developing customized care bundles for other devices such as urinary catheter and central line in our healthcare facilities and other facilities across the country to obtain a similar improvement in care bundle compliance

Determination of Nasal and Endotracheal (ETT) Microorganisms in Pediatric Patients with Intubated VAP Admitted to the Pediatric Intensive Care Unit (PICU)

Background: Ventilator-associated pneumonia (VAP) is one of the most common healthcare-related infections in pediatric and neonatal intensive care units. In the present study, due to the importance of prevention, early identification, and treatment of VAP, nasal and endotracheal microorganisms were determined in intubated patients admitted to the pediatric intensive care unit. Objectives: The present study aims to determine the nasal and endotracheal (ETT) microorganisms in pediatric patients with intubated VAP admitted to the pediatric intensive care unit (PICU). Methods: This cross-sectional two-group case-control study was conducted on 90 intubated patients: Sixty patients with VAP (30 nasal, 30 tracheal tubes) and 30 patients without VAP, hospitalized in the PICU department of Amir al Mominin Ali (AS) Hospital in Zabol, Iran, from March 2018 to December 2018. The criteria for diagnosing VAP was the clinical pulmonary infection score (CPIS). In both case and control groups, samples were collected from nasal tubes using nasal swabs and from tracheal tubes (ETT) as tracheal aspirates from intubated patients, and sent to the laboratory for culture. The collected samples were interpreted in the microbiology laboratory to identify microorganisms. Data collection was done using a demographic information questionnaire and the clinical pulmonary infection score CPIS. The data was entered into SPSS 20 statistical software and analyzed. Results: The results of the present study showed that gender and age of patients do not affect the incidence of VAP, but children with VAP have a significantly longer stay in the PICU. Microbiological examination showed that Klebsiella and Escherichia coli (13.3%) were the most frequent among the positive nasal samples, and Klebsiella and E. coli (36.7%) were the most frequent among the positive tracheal samples. The diversity of microbes observed in ETT samples was also higher. Conclusions: The present study showed that the duration of hospitalization in the pediatric intensive care unit, as well as the age of hospitalized patients, can increase the risk of VAP. Additionally, nasal sampling is effective in identifying and differentiating VAP patients. It is suggested to reduce the duration of hospitalization in these departments as much as possible and to pay more attention to older children to prevent the increase of VAP. The results indicate that nasal bacteria play a role in the more severe occurrence of ventilator-induced pneumonia. Therefore, it is recommended to use broad-spectrum antibiotics and implement preventive nursing measures. If possible, starting feeding earlier through a gastric tube is also suggested.

A new model of endotracheal tube biofilm identifies combinations of matrix-degrading enzymes and antimicrobials able to eradicate biofilms of pathogens that cause ventilator-associated pneumonia.

Ventilator-associated pneumonia is defined as pneumonia that develops in a patient who has been on mechanical ventilation for more than 48 hours through an endotracheal tube. It is caused by biofilm formation on the indwelling tube, which introduces pathogenic microbes such as Pseudomonas aeruginosa, Klebsiella pneumoniae and Candida albicans into the patient's lower airways. Currently, there is a lack of accurate in vitro models of ventilator-associated pneumonia development. This greatly limits our understanding of how the in-host environment alters pathogen physiology and the efficacy of ventilator-associated pneumonia prevention or treatment strategies. Here, we showcase a reproducible model that simulates the biofilm formation of these pathogens in a host-mimicking environment and demonstrate that the biofilm matrix produced differs from that observed in standard laboratory growth medium. In our model, pathogens are grown on endotracheal tube segments in the presence of a novel synthetic ventilated airway mucus medium that simulates the in-host environment. Matrix-degrading enzymes and cryo-scanning electron microscopy were employed to characterize the system in terms of biofilm matrix composition and structure, as compared to standard laboratory growth medium. As seen in patients, the biofilms of ventilator-associated pneumonia pathogens in our model either required very high concentrations of antimicrobials for eradication or could not be eradicated. However, combining matrix-degrading enzymes with antimicrobials greatly improved the biofilm eradication of all pathogens. Our in vitro endotracheal tube model informs on fundamental microbiology in the ventilator-associated pneumonia context and has broad applicability as a screening platform for antibiofilm measures including the use of matrix-degrading enzymes as antimicrobial adjuvants.

Ventilator Associated Pneumonia in Tertiary Care Hospital, Maharajgunj, Kathmandu, Nepal

Introduction: Ventilator Associated Pneumonia (VAP) is the most common nosocomial infection among intensive care unit (ICU) patients and lack of much information in Nepal. So, the aim of this study was to determine prevalence and bacteriological profile of VAP with special reference to multi-drug resistant (MDR), Methicillin-resistant Staphylococcus aureus(MRSA), Metallo-β-Lactamase(MBL), Extended-Spectrum β-Lactamase(ESBL)-producing bacterial strains. Methods: A total 150 tracheal specimens were studied during June 2011 to May 2012 at Department of Microbiology, TUTH as described by American Society for Microbiology (ASM). Combination disk method was done for the detection of ESBL and MBL producing isolates. Results: Prevalence of VAP was found to be 34%. Acinetobactereal coaccticusbaumannii complex (44%) was the commonest isolate, followed by Klebsiellapneumoniae (22%), Pseudomonas aeruginosa (16%) and Staphylococcus aureus (12%). Among MDR Gram negative bacteria (GNB), 39% were MBL and 33% were ESBL-producers. All GNB (61) were sensitive to Polymyxin B and Colistinsulphate, whereas, 48% were found resistant to Carbapenems. Prevalence of MRSA was 75%, which were all sensitive to Vancomycin. Conclusion: High prevalence of VAP, MDR along with MRSA or ESBL or MBL producing strains was found in the study. Thus, suitable control measures must be adopted to cope up this alarming situation with genetic characterization.