Strategies to prevent ventilator-associated pneumonia, ventilator-associated events, and nonventilator hospital-acquired pneumonia in acute-care hospitals: 2022 Update

High-dose inhaled NO for the prevention of nosocomial pneumonia after cardiac surgery under cardiopulmonary bypass: A proof-of-concept prospective randomised study

OBJECTIVE

This study aimed to assess the safety and potential efficacy of high-dose inhaled nitric oxide therapy for the prevention of postoperative pneumonia in cardiac surgery patients.

METHODS

A prospective randomised controlled pilot study included 74 patients with moderate risk of postoperative pneumonia after elective cardiac surgery under cardiopulmonary bypass. Patients were randomised into two groups. The main group (NO-group) (n = 37) received inhaled nitric oxide at a dose of 200 ppm for 30 minutes 2 times a day for 5 days or until pneumonia developed. The control group received conventional postoperative care (n = 37). The primary endpoint was the incidence of postoperative pneumonia during in-hospital stay.

RESULTS

Preventive nitric oxide inhalations were associated with a reduced incidence of postoperative nosocomial pneumonia (2 (5.4%) cases in the main group (NO-group) vs. 9 (24.3%) cases in the control group, p = 0.046; OR = 0.178, 95% CI = 0.036-0.89)). There was no decrease in either peak expiratory flow, or peak inspiratory flow in comparison with the preoperative values in the NO-group. Inhaled nitric oxide therapy is safe. It did not lead to an increase in the incidence of acute kidney injury.

CONCLUSIONS

High-dose inhaled nitric oxide therapy is safe and effective for the prevention of postoperative nosocomial pneumonia in cardiac surgery.

Infection prevention knowledge related to central line infections and ventilator-associated pneumonias: A survey of Finnish intensive care units

BACKGROUND

Health care-associated infections pose a significant risk for the patients in intensive care due to the use of medical instrumentation required for care.

METHODS

We conducted a cross-sectional, nationwide survey on awareness of recommended infection prevention practices involving central venous catheters and invasive ventilators in intensive care units.

RESULTS

A total of 810 (50% of those surveyed) nurses and physicians participated in the survey. We found that 8% of the respondents had good knowledge of infection prevention in central venous care, while 24% had good knowledge of ventilator-associated pneumonia prevention practices.

DISCUSSION

The overall level of knowledge measured with this nationwide survey was suboptimal. The level varied between units, and depending on individual questions for particular professions. The displayed knowledge may have partially been based on tradition rather than on up-to-date evidence-based guidelines.

CONCLUSIONS

Educational training in evidence-based infection prevention is needed for practical implementation to be improved.

Self-Instructional Module Regarding Ventilator-Associated Pneumonia Care Bundle Prevention on Pediatric Nursing Internship Students' Knowledge and Clinical Performance: A Randomized Control Trial

To assess the impact of a self-instructional ventilator-associated pneumonia care bundle prevention module on pediatric nursing internship students' knowledge and clinical performance. A two-arm randomized control was carried out. One hundred nursing interns were assigned randomly into two equal groups: control and study. Nursing interns' knowledge test, ventilator-associated pneumonia observational checklist bundle, and self-instructional module feedback questionnaire were used. Before the intervention, both groups had 100% low knowledge. Post-intervention, the study group achieved 100% high knowledge, compared to 16% in the control group (p < 0.001). After 3 months, 92% of the study group maintained high knowledge vs. 6% in the control group. Performance followed a similar trend, with the study group showing 96% high performance initially and 88% after 3 months. Implementing a self-instructional module significantly enhanced nursing internship students' performance and knowledge of ventilator-associated pneumonia care bundle prevention. Nursing interns' application of the self-instruction module on bundle prevention guidelines enhances their professional growth, delivers safe, appropriate practice, and improves the quality of care to critically ill children.

The association between the practice of oral care and the incidence of hospital-acquired pneumonia in intensive care medicine

BACKGROUND

Hospital-acquired pneumonia (HAP) represents one of the most common nosocomial infections in intensive care units (ICUs), accounting for 25% of all hospital-acquired infections. While oral care is recommended as a preventive measure, the relationship between standardized oral care practices and HAP incidence remains incompletely characterized.

OBJECTIVE

To evaluate the association between oral care practice compliance and HAP incidence in ICU patients, and to identify specific aspects of oral care delivery that influence outcomes.

METHODS

We conducted a prospective mixed-methods observational cohort study from May 2021 across seven ICUs in a tertiary hospital in China. The study utilized a two-phase approach: (1) systematic assessment of oral care implementation through structured observation of nursing staff (n = 58), and (2) prospective evaluation of HAP outcomes in patients (n = 142). Primary outcomes included oral care compliance metrics and HAP incidence. HAP was defined according to standardized clinical criteria and confirmed by two independent physicians.

RESULTS

Among 142 unique patients, 63 (44.37%) received oral care orders. The oral care completion rate was 61.93%, and the qualification rate was 54.13%. In our analysis, HAP (including both ventilator-associated pneumonia [VAP] and non-ventilator hospital-acquired pneumonia [NVHAP]) occurred in 15/63 (23.81%) patients receiving oral care and 22/79 (27.85%) patients without oral care. Multivariate analysis revealed that incomplete oral care (adjusted OR 2.47, [95% CI, 1.15-4.45], P = 0.009), non-qualified care techniques (adjusted OR 3.17, [95% CI, 1.45-6.35], P = 0.002), and inadequate item qualification (adjusted OR 3.33, [95% CI, 1.47-6.55], P = 0.001) were independently associated with increased HAP risk, after adjusting for confounders. Stratified analysis showed similar associations in both VAP and NVHAP subgroups.

CONCLUSION

Our investigation demonstrated that suboptimal oral care practices were associated with increased HAP risk in ICU patients. Implementation of evidence-based standardized protocols and improved adherence strategies may help reduce HAP incidence.

Pulmonary Versus Nonpulmonary Cause for Intubation and Development of Ventilator-Associated Events

Background: The Centers for Disease Control and Prevention surveillance algorithm identifies complications associated with invasive mechanical ventilation as ventilator-associated events (VAE). There is little known about reason for intubation and VAE risk. We aim to evaluate the association between reason for intubation and development of VAE. We hypothesize that subjects with primary pulmonary reasons for intubation have increased risk of VAE compared with subjects whose reason for intubation is nonpulmonary in origin. Methods: This is a single-center retrospective study of medical intensive care unit (MICU) subjects mechanically ventilated ≥4 days and admitted between January and December 2019, at an urban university hospital. Subjects were categorized as primary pulmonary versus nonpulmonary based on reason for intubation. For the primary predictor of VAE, we performed multivariate logistic regression adjusting for Mortality Probability Model (MPM0-III) variables. We accounted for the time-varying risk of VAE using a Cox proportional hazard model. Secondary outcomes included hospital and ICU mortality and stay. Results: After exclusions, there were 250 subjects in our sample 98 (39.2%) in the pulmonary and 152 (60.8%) in the nonpulmonary groups for comparison. Subjects in the nonpulmonary group had higher severity-of-illness as measured by the MPM0-III (P = .002). There was no difference in crude VAE rates between groups. In the fully adjusted model, there was no higher incidence of VAE among subjects intubated for primary pulmonary reasons (OR: 0.78, 95% CI: 0.34-1.78, P = .55). Time to VAE was not impacted by reason for intubation. There was no difference in mortality and stay. Conclusions: Our results do not suggest an association between reason for intubation and risk for VAE. This reinforces the validity of the VAE surveillance algorithm by shifting focus to modifiable therapeutic choices during a course of invasive mechanical ventilation to reduce VAE risk.

2024 Year in Review: Ventilator-Associated Pneumonia

Mechanical ventilation is essential for supporting critically ill patients but increases the risk of bacterial colonization resulting from instrumental, biological, and practice-related factors. Ventilator-associated pneumonia (VAP), a common complication, is linked to prolonged mechanical ventilation and poor outcomes. Although decades of research have emphasized prevention through care bundles and best practices, VAP remains a significant concern. This review highlights current evidence and emerging strategies for VAP prevention and management in 2024, with practical relevance for respiratory therapists caring for mechanically ventilated adult patients.

Knowledge and Practice of Mechanical Ventilation Humidification Systems in Latin American ICUs

Background: Humidification of inspired gases is critical for maintaining airway integrity in mechanically ventilated patients. However, airway instrumentation and the use of cold, dry medical gases can disrupt this process, necessitating external humidification systems. This study aimed to assess knowledge and practices regarding humidification systems in mechanical ventilation among health care professionals in Latin American ICUs. Methods: A cross-sectional, digital survey was conducted from April to August 2024, targeting ICU professionals across Latin America. The questionnaire assessed operational and clinical knowledge of heat-and-moisture exchangers (HMEs) and heated humidifiers, as well as their use in mechanical ventilation. Participants were recruited through professional societies and personal networks. Data were analyzed using descriptive and inferential statistics, with significance set at P < .05. Results: A total of 510 valid responses were analyzed, representing 20 countries. Most respondents were respiratory therapists (73%) with over 5 years of ICU experience (43%). HMEs were the first-line option for mechanical ventilation in 68% of cases, whereas 69% used humidification systems in noninvasive ventilation, favoring heated humidifiers. The median correct response rate showed significant differences by profession (P < .001) and education level (P < .001). Only 31% of respondents correctly identified the recommended minimum absolute humidity, and only 5.3% reported routine maintenance of heated systems. Conclusions: This study highlights critical gaps in knowledge and practices related to humidification systems in ICUs. The observed differences in performance based on profession and level of training suggest that continuing education and specialization are essential to optimize clinical practice.

Effect of ventilator care bundle for pediatric nurses on occurrence of ventilator-associated pneumonia among children

BACKGROUND

In pediatric intensive care units (PICUs), ventilator-associated pneumonia (VAP) is one of the most prevalent infections linked to healthcare. VAP affects 10% of children on mechanical ventilation (MV) and is associated with severe morbidity and mortality. The study aimed to evaluate the effect of the ventilator care bundle (VCB) on the occurrence of VAP among pediatric patients.

METHOD

A quasi-experimental design was conducted at Cairo University Specialized Pediatric Hospital (CUSPH), including all children who had mechanical ventilation within 24 h. VAP rates were evaluated before and after the implementation of a comprehensive VCB, which included head-of-bed elevation to 30-45°, hand hygiene reinforcement, sterile suctioning and handling of respiratory equipment, daily evaluation of extubation readiness, peptic ulcer prophylaxis, and deep venous thrombosis prophylaxis. A convenience sample of 30 nurses and a purposive sample of 60 ventilated children in the PICU participated in the study. Data collection was performed using (1) structured interview sheets, (2) the Nurses' Knowledge Assessment Questionnaire (pre/post-test), (3) the Ventilator Bundle Checklist, and (4) the Clinical Pulmonary Infection Scale (CPIS).

RESULTS

There was a significant increase in nurses' level of knowledge before and after the implementation of the VCB (X² = 21.46, p ≤ 0.01). There was a statistically significant difference between the total mean scores of nurses' practices in the first and second checklist readings (p < 0.01). Additionally, there were statistically significant differences between children in the study and control groups regarding the clinical pulmonary infection score (p < 0.01). The total mean score on the CPIS was significantly different between the study group and the control group (t = - 3.692, p = 0.001).

CONCLUSION

The study concluded that children who were cared for by nurses receiving VCB sessions were less likely to experience VAP compared to those in the control group.

RECOMMENDATION

Educational programs and in-service training courses for pediatric nurses to improve the quality of ventilator care for children and reduce the occurrence of VAP are essential.

Analysis of Hospital-Acquired Infections in a Chinese Specialized Rehabilitation Hospital: A Five-Year Surveillance Study (2020-2024)

Objective

Hospital-acquired infections (HAIs) pose significant challenges in rehabilitation hospitals, particularly affecting patients with extended stays and complex medical needs. This study analyzed HAI patterns and risk factors in a Chinese rehabilitation hospital from 2020 to 2024.

Methods

A retrospective observational study was conducted at a tertiary-care rehabilitation hospital with 25 specialized wards. Data collection included patient demographics, clinical parameters, and ward-level characteristics. Statistical analysis employed Poisson and Quasi-Poisson regression models to identify risk factors, with comprehensive diagnostic evaluation.

Results

The study revealed an overall infection rate of 3.64%, representing 385 infections among 10,559 inpatients. The Vegetative State Awakening Department exhibited the highest infection rate at 11.1%, followed by Geriatric Rehabilitation Department (8.2%), and Neuro Rehabilitation Department wards (5.5-7.0%). Respiratory tract infections were most common (42%), with ventilator-associated pneumonia accounting for 28% of all infections. Statistical analysis identified several significant risk factors through both Poisson and Quasi-Poisson regression models. In the more reliable Quasi-Poisson model that accounted for overdispersion, tracheal intubation emerged as the strongest predictor with a coefficient of 2.02 (p < 0.001), followed by use of glucocorticoids (coefficient: 1.78, p < 0.001). While the initial Poisson model suggested a protective effect of radiation therapy, this effect was not significant in the Quasi-Poisson model.

Conclusion

The study highlights the critical role of tracheal intubation and glucocorticoid use in HAI development within rehabilitation settings. The significant ward-level variability in infection rates suggests the need for tailored infection control strategies. Implementation of targeted interventions focusing on these identified risk factors could help reduce HAI incidence in rehabilitation hospitals.

Deep learning models for early and accurate diagnosis of ventilator-associated pneumonia in mechanically ventilated neonates

BACKGROUND

Early and accurate confirmation of critically ill neonates with a suspected diagnosis of ventilator-associated pneumonia (VAP) can optimize the therapeutic strategy and avoid unnecessary use of empirical antibiotics. We aimed to examine whether deep learning (DL) methods can assist the diagnosis of VAP of intubated neonates in the neonatal intensive care unit (NICU).

METHODS

A total of 670 neonates with mechanical ventilation were prospectively observed in a tertiary-level NICU in Taiwan between October 2017 and March 2022, during which image data were collected. All neonates with clinically suspected VAP were enrolled, and various DL methods were used to test the prediction ability of VAP diagnosis. The accuracy, precision, sensitivity, specificity, F1-score, and area under curves (AUCs) of several DL methods were compared.

RESULTS

A total of 900 chest X-ray images derived from 670 neonates with VAP and/or bronchopulmonary dysplasia (BPD) were enrolled, including 399 images from patients with definite diagnosis of VAP based on the strict criteria and 501 images from neonates without VAP. Compared with conventional DNN models such as ResNet, VGG, DenseNet, the RegNetX80 achieved the best specificity of 0.8378, which facilitates a low false positive rate. For accurate diagnosis of neonatal VAP, a combinatorial model of ResNet50 and RegNetX80, created through ensemble learning, further enhanced the AUC to 0.8023 for neonates with VAP on mechanical ventilation. In addition, the consistent XAI results in the left-lower region of chest X-ray image provided informative feedback and increased confidence to AI-assisted doctors.

CONCLUSIONS

Deep learning methods are applicable with good predictive accuracy using chest X-ray images to help diagnosis of VAP in the NICU, which can help clinicians make decisions regarding the choices of empiric antibiotics for critically ill neonates. Future prospective trials are warranted to document its clinical usefulness and benefits on reducing medical resources.

Severe Pneumonia

Severe pneumonia is a leading cause of mortality and morbidity worldwide. Being a complex condition caused by a variety of microorganisms including bacteria, viruses, and fungi, it requires intensive care. A combination of early initiation of antimicrobial therapy and adjunctive nonantimicrobial interventions improve patient outcomes. This article reviews the most recent data on the epidemiology, microbiology, diagnosis, and management of severe pneumonia.

Cost savings of a nationwide project preventing healthcare-associated infections in adult, paediatric and neonatal critical care settings in Brazil: a micro-costing study

OBJECTIVE

To provide evidence of the cost savings of a quality improvement (QI) initiative preventing healthcare-associated infections (HAIs) in critical care settings.

DESIGN

A micro-costing study focused on financial data related to a nationwide multicentric project preventing central line-associated bloodstream infection (CLABSI), ventilator-associated pneumonia (VAP) and catheter-associated urinary tract infection (CAUTI).

SETTING

Brazilian public healthcare system.

PARTICIPANTS

Adult, paediatric and neonatal intensive care units (ICUs) participating in the QI initiative.

INTERVENTION

This collaborative QI project implemented a multifaceted strategy to enhance infection-control measures. Participating ICUs reported the number of patients with and without HAIs and information on each HAI's aggregate average cost (AC), which was analysed following the Brazilian Ministry of Health's micro-costing guidelines. The 1-year preintervention period evidenced an aggregated AC in adult, paediatric and neonatal ICUs, respectively, of Intl$21 763.5 (95% CI 20 683.6 to 22 843.0), Intl$34 062.4 (95% CI 25 819.6 to 42 304.9) and Intl$32 903.2 (95% CI 29 203.6 to 36 602.4) for CLABSI; Intl$25 202.5 (95% CI 24 276.6 to 26 127.8), Intl$44 753.6 and Intl$17 238.4 for VAP and Intl$19 166.3 (95% CI 17 676.2 to 20 656.1) and Intl$55 873.3 (95% CI 43 563.1 to 68 183.1) for CAUTI (not included neonatal ICUs).

PRIMARY OUTCOME

The cost savings were estimated using the HAIs prevented-expenses avoided-during the QI intervention period from September 2021 to December 2023. The HAIs prevented were estimated using the difference between observed and predicted infections based on the aggregated preintervention baseline.

RESULTS

Of the 188 participating ICUs, 31 voluntarily completed and provided the requested financial data with 100% accuracy. Considering the prevented 7342 HAIs for adult, paediatric and neonatal ICUs, respectively: 1647, 86 and 205 CLABSI; 3775, 114 and 118 VAP; and 1377 and 20 CAUTI, we estimated a saving of Intl$175.3 million (95% CI 153.2 to 180.9 million) to the Brazilian unified health system and a resultant estimated return on investment (ROI) of 890%.

CONCLUSION

This QI collaborative is a value-based initiative preventing HAIs in adult, paediatric and neonatal ICUs in South American settings. The substantial cost savings and a remarkable ROI underscore the economic viability of investing in comprehensive QI infection prevention strategies.

The Potential of Probiotics in Reducing Ventilator-Associated Pneumonia: A Literature-Based Analysis

Ventilator-associated pneumonia (VAP) remains a significant concern in intensive care units (ICUs), contributing to increased morbidity, mortality, and healthcare costs. Probiotics and synbiotics have been explored as potential preventive measures due to their ability to modulate gut microbiota, reduce pathogenic colonization, enhance immune responses, and maintain intestinal barrier integrity. While some randomized controlled trials (RCTs) suggest that specific strains, such as Lactobacillus rhamnosus GG and Bifidobacterium breve, may reduce VAP incidence, larger trials have not confirmed significant benefits. Systematic reviews and meta-analyses indicate a potential 28-38% relative risk reduction in VAP, but evidence quality remains low due to methodological limitations and study heterogeneity. Economic evaluations also question the cost effectiveness of probiotic use in ICU settings. Future research should focus on large-scale, multicenter RCTs to determine the optimal strains, dosages, and administration methods, along with standardized diagnostic criteria. Until stronger evidence emerges, probiotics should be considered an adjunctive rather than a primary VAP prevention strategy.

The Potential of Probiotics in Reducing Ventilator-Associated Pneumonia: A Literature-Based Analysis

Ventilator-associated pneumonia (VAP) remains a significant concern in intensive care units (ICUs), contributing to increased morbidity, mortality, and healthcare costs. Probiotics and synbiotics have been explored as potential preventive measures due to their ability to modulate gut microbiota, reduce pathogenic colonization, enhance immune responses, and maintain intestinal barrier integrity. While some randomized controlled trials (RCTs) suggest that specific strains, such as Lactobacillus rhamnosus GG and Bifidobacterium breve, may reduce VAP incidence, larger trials have not confirmed significant benefits. Systematic reviews and meta-analyses indicate a potential 28–38% relative risk reduction in VAP, but evidence quality remains low due to methodological limitations and study heterogeneity. Economic evaluations also question the cost effectiveness of probiotic use in ICU settings. Future research should focus on large-scale, multicenter RCTs to determine the optimal strains, dosages, and administration methods, along with standardized diagnostic criteria. Until stronger evidence emerges, probiotics should be considered an adjunctive rather than a primary VAP prevention strategy.

Effect of ICU Quality Control and Secondary Analysis: A 12-Year Multicenter Quality Improvement Project

Background

China's aging population and increasing demand for critical care pose significant challenges to ICU quality improvement (QI). This study evaluates the impact of a 12-year multicenter QI initiative on ICU performance and patient outcomes in the context of resource constraints.

Methods

A pre-post intervention study was conducted across 75 ICUs in Beijing from January 2011 to December 2022. Key interventions included the establishment of QI teams, infection prevention protocols, pain and sedation management, nutritional support, and early mobilization strategies based on the PDCA cycle, as well as regular training and feedback. Primary outcomes included ICU mortality, standardized mortality ratio (SMR) (ratio of observed to expected deaths, adjusted for risk), and healthcare-associated infections (HAIs), such as VAP, CLABSI, and CAUTI rates. Secondary outcomes included unplanned extubation rates, reintubation within 48 hours, and ICU readmission rates within 48 hours.

Results

Analysis of 425,534 patient records from 5396 reports revealed significant improvements. The proportion of ICU admissions among total inpatients increased from 4.1% in 2011 to 7.3% in 2022 (P < 0.001), and the proportion of patients with APACHE II scores ≥15 rose from 52.0% to 67.5% (P < 0.001). Compliance with 3-hour and 6-hour sepsis bundles increased (P < 0.001), and microbiological testing before antibiotic administration also improved (P < 0.001). Outcome indicators showed significant reductions in CRBSI and CAUTI rates (P < 0.001), ICU mortality (P < 0.001), and SMR (P < 0.001). VAP rates decreased from 6.29 to below 5.0 per 1000 ventilator days. ICU readmission rates and unplanned transfers slightly increased but remained low (P > 0.05).

Conclusion

The study highlights the importance of addressing structural, process, and outcome indicators for effective ICU management. Continued monitoring and targeted interventions for high-risk ICUs are essential to sustaining quality improvements.

Optimizing infection control: Evaluating nurses' knowledge and practices for preventing infections in mechanically ventilated patients

INTRODUCTION

Infection control is crucial in healthcare, particularly in intensive care units (ICUs), where patients are at high risk of infection due to mechanical ventilation. Ventilator-associated pneumonia (VAP) is one of the most common hospital-acquired infections in ICUs, leading to increased morbidity, prolonged hospital stays, and elevated healthcare costs. Nurses are essential in implementing infection control measures to prevent these infections. Evaluating their knowledge and practices is key to identifying areas for improvement.

AIM

This study assesses ICU nurses' knowledge and practices regarding infection control, particularly in preventing VAP in mechanically ventilated patients.

METHODS

A descriptive observational study was conducted at King Fahad Specialist Hospital in Saudi Arabia. Participants were selected using purposive sampling based on their experience and direct care responsibilities. Data were collected using a self-report questionnaire and an observational checklist. The questionnaire assessed knowledge across domains such as infection control principles and VAP prevention, while the checklist evaluated practices like hand hygiene and adherence to VAP bundles.

RESULTS

The study found that 61.2 % of nurses demonstrated satisfactory infection control practices, with hand hygiene showing the highest compliance (81.8 %). However, VAP bundle adherence was low (42.4 %). Knowledge gaps were also identified, especially in VAP prevention and oral care.

CONCLUSION

The findings suggest a need for targeted educational programs to improve infection control practices among ICU nurses. Enhanced training could address observed gaps in knowledge and practice, particularly in VAP prevention and oral care, ultimately improving patient outcomes.

Effect of implementing training programme for nurses about care bundle on prevention of ventilator-associated pneumonia among newborns

BACKGROUND

Ventilator-associated pneumonia (VAP) is a frequent and severe complication among newborns in neonatal intensive care units (NICUs). It is associated with elevated morbidity and mortality rates, more extended hospital stays and increased health care costs. Implementing preventive care bundles and structured sets of evidence-based practices reduces VAP incidence. As primary caregivers, nurses are critical in consistently applying these preventive measures in NICU settings.

AIM

To evaluate the impact of a structured training programme on nurses' practices in the prevention of VAP among ventilated newborns in NICUs.

STUDY DESIGN

This prospective, pre- and post-intervention study was conducted with 27 nurses caring for mechanically ventilated newborns. All newborns admitted to the NICU who met inclusion criteria were included in the study (34 newborns pre-intervention, 38 newborns post-intervention and 41 newborns 3 months after the intervention).

RESULTS

The results indicate significantly improved nurses' practices for VAP prevention across the core, equipment-related general measures, with total mean scores increasing from 50.67% (95% CI: 44.30-56.92) pre-programme to 89.26% (95% CI: 85.68-92.84) immediately post-programme and 73.33% (95% CI: 67.79-78.88) after 3 months (p < .001). Before the programme, 85.3% of newborns developed VAP. However, this dropped dramatically to just 10.5% immediately after the programme, with a relative risk of 0.123 (95% CI: 0.046-0.328, p < .001). Even 3 months later, the rates remained much lower at 19.5% than before the programme, with a relative risk of 0.228 (95% CI: 0.117-0.445, p < .001). Multivariate logistic regression showed that only overall nurses' practices remained statistically significant in reducing VAP risk (OR = 0.819, 95% CI: 0.728-0.920, p = .001) after adjusting for confounders. Prolonged ventilation and individual components of nursing practices were not significant in the multivariate model.

CONCLUSIONS

This study demonstrates that a structured educational programme can significantly enhance nurses' adherence to VAP preventive practices and reduce VAP incidence. Regular training initiatives are crucial for sustaining high care standards, thereby improving neonatal patient health care outcomes.

RELEVANCE TO CLINICAL PRACTICE

Newborns in the neonatal intensive care unit (NICU) are at a higher risk of developing ventilator-associated pneumonia (VAP) because of their fragile immune systems, the need for mechanical ventilation and prolonged hospital stays. VAP can lead to severe complications, including increased morbidity, mortality and long-term health issues. Training NICU nurses on VAP prevention care bundles is crucial for improving neonatal care, reducing preventable infections and optimizing clinical outcomes in a highly vulnerable neonatal population. It supports evidence-based practice, enhances nurse competence and contributes to the overall quality of care in neonatal intensive care settings. As a result, implementing such a training programme should be a top priority in NICU clinical practice.

Implementation of a structured oral hygiene program through nursing assistant education to address non-ventilator hospital-acquired pneumonia: A quasi-experimental study

INTRODUCTION

Non-ventilator hospital-acquired pneumonia (NV HAP) is a common complication for hospitalized patients. NV HAP develops when patients aspirate oral secretions containing pathogenic bacteria. Appropriate oral hygiene can help mitigate NV HAP development. Hospital staff, including nursing assistants, play an important role in ensuring that these cares are completed.

DESIGN

A quasi-experimental pre-post design was used to evaluate outcomes before and after implementation of a structured oral hygiene education program.

METHODS

A structured oral hygiene program was developed and implemented in a large quaternary hospital. Change in NA knowledge, attitudes, and behaviors before and after implementation of the oral hygiene program was evaluated. Retrospective patient outcomes before and after the intervention were analyzed to detect changes in NV HAP rates.

RESULTS

Following the education, nursing assistant knowledge of recommended frequency of oral care for patients who are NPO increased (67.2% vs. 82.1%, p = 0.003). NAs were more likely to report oral hygiene tools including oral suctioning (80.8% vs. 90.2%, p = 0.005) and toothbrushes (89.3% vs. 95.3%, p = 0.031). The unadjusted incidence of NV HAP was significantly lower in the post-intervention cohort (0.25%) compared to the pre-intervention cohort (0.74%), p < 0.001. In the adjusted model, non-invasive positive pressure ventilation increased the odds of NV HAP by nearly sevenfold (AOR = 6.88, 95% CI: 3.99, 11.39).

CONCLUSION

Focused education for NAs is an effective strategy to increase knowledge related to oral hygiene. Implementing a structured oral hygiene program for NAs appears to be a promising practice to decrease NV HAP.

A multimedia tool for infection prevention and control practices in the intensive care unit: a participatory interventional before-after study

Background

Infection prevention and control (IPC) practices by critical care nurses are crucial in preventing ventilator-associated pneumonia (VAP) and central-line-associated bloodstream infection (CLABSI).

Aim

To implement an integrative approach to developing a set of IPC practices and disseminating information on the IPC practices through an educational multimedia tool to improve compliance with the practices.

Methods

This participatory interventional before-after study was conducted in a single tertiary care centre's cardiac surgical intensive care unit (ICU) from May 2022 to March 2023. Thirty-seven nursing IPC practices related to VAP and eight for CLABSI were finalized through a three-step process: systematized review, focused group discussions (five rounds), and Delphi rounds (three rounds). The IPC practices were disseminated through a multimedia tool, displayed continuously in the ICU. Nurses' compliance with the IPC practices observed directly was compared before and after implementing the multimedia tool.

Results

A total of 6043 observations for practices related to VAP and 1957 observations for those of CLABSI were performed. There was an increase in compliance post implementation for 11 IPC practices related to VAP and two IPC for those of CLABSI. There was an increase in compliance with practices relevant to chlorhexidine baths, oral care, cuff pressure maintenance, hypertonic saline nebulization, endotracheal suctioning, scrubbing the hub for central line access, and assessment of the central line for removal.

Conclusion

Through a participatory approach, we developed a set of IPC nursing practices for VAP and CLABSI. Implementing a multimedia tool, which encompasses the newly implemented IPC practices, improved compliance with many practices.

Random forest analysis of ICU nurses' knowledge, attitudes and practices in oral care for ventilator-associated pneumonia prevention

BACKGROUND

Oral care is critical for preventing ventilator-associated pneumonia (VAP) in intensive care unit (ICU) patients. ICU nurses play a key role in delivering this care but often encounter challenges stemming from knowledge gaps and inconsistent practices.

AIM

To assess ICU nurses' knowledge, attitudes and practices (KAP) in oral care for VAP prevention and identify demographic factors influencing these variations using random forest analysis.

STUDY DESIGN

A multi-centre cross-sectional study was conducted. Between April and June 2023, 291 ICU nurses from five ICUs across three public tertiary hospitals in Ganzhou City were surveyed using proportionate stratified sampling. Likert-scale questionnaires evaluated KAP, and statistical analyses, including t-tests, analysis of variance and random forest models, were used to determine demographic predictors of KAP scores.

RESULTS

The average KAP scores were as follows: knowledge 27.34 (±4.53), attitudes 31.89 (±4.24), and practices 43.13 (±9.0). Significant predictors of KAP included academic titles, professional positions, gender, ICU tenure and department. Common barriers to effective oral care included lack of formal training, time constraints and limited resources.

CONCLUSIONS

ICU nurses demonstrate positive attitudes towards VAP prevention, but significant gaps in knowledge and practice remain. Targeted education, especially for less-experienced and lower qualified nurses, and standardized protocols are essential to improve adherence to oral care practices and reduce VAP incidence.

RELEVANCE TO CLINICAL PRACTICE

The findings highlight the need for tailored educational interventions to address knowledge gaps, particularly among male, less-experienced and lower qualified nurses. Implementing standardized training protocols can enhance oral care practices, improve patient outcomes and reduce VAP incidence.

Ventilator-Associated Pneumonia in Intensive Care Units: A Comparison of Pre-Pandemic and COVID-19 Periods

Background/Objectives: The COVID-19 pandemic has significantly increased the burden of ventilator-associated pneumonia (VAP) in intensive care units (ICUs) globally. However, epidemiological data on VAP in Slovak ICUs, particularly in the context of the pandemic, remain limited. This study aimed to evaluate the incidence, microbial profiles, and risk factors of VAP in Slovak ICU settings, particularly during the COVID-19 pandemic. Methods: A retrospective analysis of VAP data was conducted for respiratory intensive care unit (ICU) patients in a Slovak university hospital, comparing data from the pre-pandemic and pandemic periods. The CDC/NHSN definitions for VAP were applied, and statistical analyses were performed using STATISTICA 13.1. Results: A total of 803 patients were analyzed, representing 8385 bed days and 5836 mechanical ventilator days. VAP rates increased significantly during the pandemic by 111%, from 8.46 to 17.86 events per 1000 MV days (p < 0.001). VAP rates in non-COVID-19 patients increased by 86% during the pandemic compared to pre-pandemic levels. Pandemic conditions also increased ICU mortality from 25.66% to 40.52% (p < 0.001). VAP was identified as a critical determinant of ICU mortality, contributing to a 21.62% higher mortality rate among patients during the pandemic. Younger age, prolonged mechanical ventilation, and medical (vs. surgical) hospitalizations were associated with higher VAP incidence. Gram-negative bacteria dominated the pathogen profiles, with significant increases observed in Pseudomonas aeruginosa (183%), Klebsiella pneumoniae (150%), and Acinetobacter spp. (100%). Conclusions: The COVID-19 pandemic has significantly affected the incidence and epidemiology of VAP in Slovak ICUs, highlighting systemic vulnerabilities in HAI surveillance and IPC practices.

Preventing ventilator-associated pneumonia: A position paper of the International Society for Infectious Diseases, 2024 update

OBJECTIVES

This review by a panel of experts convened by the International Society for Infectious Diseases aims to consolidate current recommendations for preventing ventilator-associated pneumonia (VAP). It provides insights into VAP rates, the attributable extra length of stay, costs, mortality, and risk factors in high-income and low- and middle-income countries (LMICs).

METHODS

A comprehensive review of existing recommendations and evidence-based strategies for preventing VAP was conducted. The expert panel analyzed data on VAP incidence, associated healthcare burdens, and risk factors across different economic settings to formulate applicable preventive measures.

RESULTS

The review identifies significant differences in VAP rates, healthcare costs, extra length of hospital stay, and mortality between high-income and LMICs. Evidence-based strategies for preventing VAP were highlighted, demonstrating their effectiveness across different healthcare settings.

CONCLUSION

The recommendations and insights provided in this position paper aim to guide healthcare professionals in effectively preventing VAP. The adoption of evidence-based preventive strategies can potentially reduce VAP rates, and associated costs, and improve patient outcomes in both high-income and LMICs.

Ventilator-associated pneumonia risk factors in patients with severe COVID-19 in southern Brazil: A retrospective observational study

BACKGOUND

During the SARS-CoV-2 pandemic, a significant number of critical patients required ventilatory assistance in health institutions. In this context, Ventilator-Associated Pneumonia (VAP) was the most prevalent nosocomial infection among critically ill patients. We aimed to analyze the occurrence of VAP in critically ill patients with SARS-CoV-2 and the risk factors associated with the outcome.

METHOD

This is a multicenter, retrospective cohort study which included patients ≥18 years old, diagnosed with COVID-19, admitted to intensive care units (ICU) and who received invasive mechanical ventilation (MV) for >2 consecutive days. The associations between the variables were initially tested, and those that showed potential associations (p<0.05) were included in the multivariate logistic regression model.

RESULTS

One third of patients had an episode of VAP, with an incidence density of 34.97 cases per 1000 MV days. In addition, 42.37% (50) of the microorganisms causing VAP were multidrug-resistant, predominantly gram-negative bacteria (61.32%). More than 50% of participants developed healthcare-associated infections and 243 (73.64%) died. The factors associated with greater chances of VAP were: prone position (OR= 3.77), BMI 25-29.9 kg/m2 (OR= 4.76), pressure injury (OR= 4.41), length of stay in the ICU (OR= 1.06), positive tracheal aspirate before VAP (OR= 5.41) and dyspnea (OR= 3.80).

CONCLUSIONS

Patients with COVID-19 are at high risk of VAP, which leads to an increased risk of death (OR = 2.18). Multiple factors increase the chances of VAP in this population, namely: work overload in health institutions, prone position, prolonged ICU time, infusion of multiple drugs, invasive devices, and in particular, immobility in bed.

Stepwise implementation of prevention strategies and their impact on ventilator-associated pneumonia incidence: A 13-Year observational surveillance study

OBJECTIVE

To describe the practice of ventilator-associated pneumonia (VAP) prevention and control through the incremental introduction of prevention strategies and assess the effect on VAP incidence.

DESIGN

Historical observational surveillance study conducted over 13 years.

SETTING

A 12-bed adult intensive care unit (ICU) in a general hospital in Belgium.

PARTICIPANTS

Patients admitted between 2007 and 2019, with ICU stays of ≥48 h.

INTERVENTIONS

Incremental introduction of VAP preventive measures from 2008, including head-of-bed elevation, cuff pressure control, endotracheal tubes with tapered cuffs, subglottic secretion drainage, chlorhexidine oral care, and daily sedation assessment.

MEASUREMENTS AND MAIN RESULTS

A significant decline in VAP incidence density rates was observed, from 18.3 to 2.6 cases per 1000 ventilator days from the baseline to the final period.

CONCLUSIONS

Systematic implementation of VAP preventive measures significantly reduced VAP incidence. However, this reduction did not translate into decreased overall ICU mortality.

IMPLICATIONS FOR PRACTICE

The study underscores the importance of continuous VAP surveillance and preventive measures in reducing VAP incidence.

Antimicrobial Resistance Patterns and Biofilm Analysis via Sonication in Intensive Care Unit Patients at a County Emergency Hospital in Romania

Background/Objectives: Ventilator-associated pneumonia (VAP) remains a critical challenge in ICU settings, often driven by the biofilm-mediated bacterial colonization of endotracheal tubes (ETTs). This study investigates antimicrobial resistance patterns and biofilm dynamics in ICU patients, focusing on microbial colonization and resistance trends in tracheal aspirates and endotracheal tube biofilms at a county emergency hospital in Romania. Methods: We conducted a longitudinal analysis of ICU patients requiring mechanical ventilation for more than 48 h. Tracheal aspirates and ETT biofilms were collected at three key time points: T1 (baseline), T2 (48 h post-intubation with ETT replacement), and T3 (92-100 h post-T2); these were analyzed using sonication and microbiological techniques to assess microbial colonization and antimicrobial resistance patterns. Results: In a total of 30 patients, bacteria from the ESKAPEE group (e.g., Klebsiella pneumoniae, Acinetobacter baumannii, Staphylococcus aureus) dominated the microbiota, increasing their prevalence over time. Resistance to carbapenems, colistin, and vancomycin was notably observed, particularly among K. pneumoniae and A. baumannii. Biofilm analysis revealed high persistence rates and the emergence of multidrug-resistant strains, underscoring the role of ETTs as reservoirs for resistant pathogens. The replacement of ETTs at T2 correlated with a shift in microbial composition and reduced biofilm-associated contamination. Conclusions: This study highlights the temporal evolution of antimicrobial resistance and biofilm-associated colonization in a limited number of ICU patients (30 patients). The findings support implementing routine ETT management strategies, including scheduled replacements and advanced biofilm-disruption techniques, to mitigate VAP risk and improve patient outcomes.

Etiology of Hospital-Acquired Pneumonia (HAP) and Ventilator-Associated Pneumonia (VAP) in Tertiary-Care Hospitals in Thailand: A Multicenter, Retrospective Cohort Study

Purpose

To describe the top three causative organisms of hospital acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) in Thailand.

Patients and Methods

This multi-center retrospective cohort study included HAP/VAP patients hospitalized in 2019 in three university-affiliated hospitals and a private hospital in Bangkok, Thailand. Medical records of patients with a documented diagnosis of nosocomial pneumonia (NP) were systematically reviewed to collect data on demographic, clinical, microbiological, and 30-day readmission due to NP.

Results

A total of 240 patients were included in the study, comprises patients with VAP (62.9%), HAP (36.7%), and ventilated HAP (vHAP) (0.4%). All of the patients had late-onset NP, occurring after five days of hospitalization with median time to NP of 13 days (interquartile range [IQR] 6-25 days) from admission. The top three causative pathogens of NP were Acinetobacter baumannii (44.2%), Pseudomonas aeruginosa (34.6%), and Klebsiella pneumoniae (28.3%). A high rate of carbapenem resistance (CR) in A. baumannii (92.5%) was observed. Lower rates of CR were observed in K. pneumoniae (20.6%) and P. aeruginosa isolates (16.9%). Readmission rate due to NP within 30 days after discharge was less than 2% with median time of 4 days (IQR 3-20 days) after discharge. After diagnosis of NP, 19 patients were transferred to intensive care units with median length of stays of 11 days (IQR 3-24 days). Fifty-one percent of HAP patients received mechanical ventilation support after the diagnosis of NP with median length of mechanical ventilation use of 12 days (IQR 6-22 days).

Conclusion

A. baumannii, with its significant carbapenem resistance, presents a major HAP/VAP pathogens and imposes a substantial burden on healthcare resources in this study. Implementation of regular surveillance for causative organisms of NP and their susceptibility profiles are critical for the success of HAP/VAP management, and reducing the related burden of healthcare resources.

Ventilator-Associated Pneumonia in Low- and Middle-Income vs High-Income Countries: The Role of Ventilator Bundle, Ventilation Practices, and Health Care Staffing

BACKGROUND

Ventilator-associated pneumonia (VAP) rates are higher in low- and middle-income countries (LMICs) than in high-income countries (HICs).

RESEARCH QUESTION

Could differences in ventilator bundle adherence, ventilation practices, and critical care staffing be driving variations in VAP risk between LMICs and HICs?

STUDY DESIGN AND METHODS

This secondary analysis of the multicenter, international Checklist for Early Recognition and Treatment of Acute Illness and Injury (CERTAIN) study included mechanically ventilated patients at risk for VAP from 11 LMICs and 5 HICs. We included oral care, head-of-bed elevation, spontaneous breathing assessments, and sedation breaks in the ventilator bundle. Staffing was assessed by the number of physicians and nurses per bed. Multivariable analyses were adjusted for severity, baseline characteristics, and checklist implementation. The primary outcome was VAP development.

RESULTS

Among 2,253 patients, 1,755 were from LMICs and 498 from HICs. Compared with HICs, patients from LMICs were younger, had lower comorbidity burden, and were less severely ill. Lower country income level was independently associated with VAP development (adjusted OR [aOR], 2.11; 95% CI, 1.37-3.24). Ventilator bundle adherence was not significantly associated with VAP. Increased total duration of ventilation was associated with an increased risk of VAP (aOR, 1.04; 95% CI, 1.03-1.05), whereas higher nursing (aOR, 0.88; 95% CI, 0.79-0.98) and physician staffing ratios (aOR, 0.69; 95% CI, 0.50-0.87) were associated with lower VAP rates.

INTERPRETATION

Our results show that patients in LMICs have a 2-fold higher risk of VAP, independent of bundle adherence. Prolonged mechanical ventilation was an independent predictor of VAP, whereas higher staffing ratios were associated with decreased risk for VAP development. Unmeasured factors (eg, infrastructure, infection control practices) may explain the higher VAP rates in LMICs.

Is the high dose extended infusion of meropenem useful in the treatment of highly resistant gram-negative bacteria in children?

OBJECTIVES

Multidrug resistant infections present a treatment challenge for clinicians. These infections have been associated with increased morbidity and mortality. Recently, there has been increasing discussion in the literature that high dose extended infusion of meropenem may be helpful. We aimed to evaluate the clinical efficacy of high dose extended infusion of meropenem in the treatment of highly resistant Gram-negative infections.

METHODS

This retrospective observational study was conducted between December 2014 and December 2020 at Hacettepe University Ihsan Dogramaci Children's Hospital. Clinical and microbiological data of children diagnosed with invasive multidrug and extremely drug resistant Gram-negative infections were studied. The findings of patients given high dose extended infusion of meropenem were compared with patients who received colistin or tigecycline.

RESULTS

Overall, 158 pediatric patients infected with multidrug and extremely drug resistant gram-negatives were enrolled; 76 treated with high-dose prolonged infusion of meropenem; 60 treated with colistin and 22 with tigecycline. The overall clinical response at the end of the treatment was 81.6 % in meropenem group, 83.3 % in colistin group and 77.3 % in tigecycline group (P = 0.821). Microbiological response at the end of the treatment was 81.1 % in meropenem group, 76.4 % in colistin group and 72.2 % in tigecycline group (P = 0.694).

CONCLUSION

Meropenem, with an adjusted dose (high-dose and extended), seems a crucial and robust fighting agent in the treatment of pediatric patients infected with highly-resistant Gram-negative bacteria. It may also be useful in preventing the use of the latest fighting tools such as colistin and tigecycline during the antibacterial stewardship process.

Identifying predictors of nosocomial pneumonia in trauma patients admitted to a level-1 trauma center

BACKGROUND

Nosocomial pneumonia is common in trauma patients and associated with an adverse prognosis. We recently externally validated and recalibrated an existing formula to predict nosocomial pneumonia risk. Identifying more potential predictors could aid in a more accurate prediction of nosocomial pneumonia risk in level-1 trauma patients. This study aims to identify predictors of nosocomial pneumonia in level-1 trauma patients available in the emergency department or shortly after, and examine their added predictive value to an existing prediction model by Croce.

METHODS

This retrospective cohort study included all consecutive trauma patients (≥ 16 years) admitted for > 24 h to our level-1 trauma center in 2017. Excluded were patients with active infection upon admission, transfer from another hospital, or in-hospital mortality < 48 h. Multiple imputations were used for missing values. Multivariable logistic regression analysis and Ridge penalization were performed to assess the association of predictors with nosocomial pneumonia and evaluate predictor stability. The predictive performance in addition to the existing prediction model was evaluated as well.

RESULTS

The study included 809 patients [median age 51 (IQR 32-68) years, 66.9% male, median ISS 10 (5-17), median GCS score 15 (14-15)]. Pneumonia incidence was 10.6% (n = 86). Age (OR 1.03 per year), ISS (OR 1.10 per point), GCS score (OR 0.91 per point), pulmonary contusion (OR 2.77), male sex (OR 1.36), hypertension (OR 1.86), diabetes (OR 1.20), number of rib fractures (OR 1.05 per fractured rib), and thoracic spine fracture (OR 1.51) were found to be predictors of nosocomial pneumonia. All variables showed added predictive value in addition to the existing model.

CONCLUSION

Patient history, injury severity, thoracic trauma, and traumatic brain injury are essential components of nosocomial pneumonia prediction and add to the predictive value of an existing model. Our results further build a basis for more accurate prediction.

LEVEL OF EVIDENCE

Level III, prognostic/epidemiological.

Fluoroquinolones and Biofilm: A Narrative Review

Background: Biofilm-associated infections frequently span multiple body sites and represent a significant clinical challenge, often requiring a multidisciplinary approach involving surgery and antimicrobial therapy. These infections are commonly healthcare-associated and frequently related to internal or external medical devices. The formation of biofilms complicates treatment, as they create environments that are difficult for most antimicrobial agents to penetrate. Fluoroquinolones play a critical role in the eradication of biofilm-related infections. Numerous studies have investigated the synergistic potential of combining fluoroquinolones with other chemical agents to augment their efficacy while minimizing potential toxicity. Comparative research suggests that the antibiofilm activity of fluoroquinolones is superior to that of beta-lactams and glycopeptides. However, their activity remains less effective than that of minocycline and fosfomycin. Noteworthy combinations include fluoroquinolones with fosfomycin and aminoglycosides for enhanced activity against Gram-negative organisms and fluoroquinolones with minocycline and rifampin for more effective treatment of Gram-positive infections. Despite the limitations of fluoroquinolones due to the intrinsic characteristics of this antibiotic, they remain fundamental in this setting thanks to their bioavailability and synergisms with other drugs. Methods: A comprehensive literature search was conducted using online databases (PubMed/MEDLINE/Google Scholar) and books written by experts in microbiology and infectious diseases to identify relevant studies on fluoroquinolones and biofilm. Results: This review critically assesses the role of fluoroquinolones in managing biofilm-associated infections in various clinical settings while also exploring the potential benefits of combination therapy with these antibiotics. Conclusions: The literature predominantly consists of in vitro studies, with limited in vivo investigations. Although real world data are scarce, they are in accordance with fluoroquinolones' effectiveness in managing early biofilm-associated infections. Also, future perspectives of newer treatment options to be placed alongside fluoroquinolones are discussed. This review underscores the role of fluoroquinolones in the setting of biofilm-associated infections, providing a comprehensive guide for physicians regarding the best use of this class of antibiotics while highlighting the existing critical issues.

Longitudinal two-year comparative genomic analysis of respiratory Staphylococcus aureus isolates from intensive care unit mechanically ventilated patients

BACKGROUND

Ventilator-associated pneumonia (VAP) is the main healthcare-associated infection in intensive care units with Staphylococcus aureus as the first pathogen in early VAP.

AIM

To compare, using whole-genome sequencing (WGS), consecutive S. aureus isolates from lower respiratory samples of mechanically ventilated patients for identification of potential cross-transmissions; and to determine a potential link between S. aureus WGS data and patients with S. aureus early VAP.

METHODS

All mechanically ventilated patients with a documentation of respiratory S. aureus isolates were included over a two-year period. WGS allowed typing, comparative genomic and phylogenic analyses, as well as analyses of antibiotic resistance genes and virulence genes. Virulence genes were compared between patients who developed respiratory infectious event and those who did not.

FINDINGS

A total of 172 S. aureus isolates from 167 patients were sequenced. WGS revealed that the S. aureus population was polyclonal with only two potential healthcare cross-transmissions, each involving two isolates (2.3%). A very low resistance rate was observed with a strong genotypic/phenotypic association, and with a virulence profile highly dependent on the sequence type. No significant correlation was observed between VAP and virulence profile.

CONCLUSION

This study on consecutive respiratory S. aureus isolates of mechanically ventilated patients revealed a very low level of cross-transmission. No association was observed between S. aureus WGS data and VAP occurrence.

Assessing the Impact of Oral Care Micro-courses on ICU Nurses' Compliance Through a Mixed-Effects Model: A Quasi-experimental Study

Background Ventilator-associated pneumonia (VAP) is a common and severe hospital-acquired infection, and oral care is an effective preventive measure. However, the compliance and quality of oral care among intensive care unit (ICU) nurses need improvement. Methods This quasi-experimental study was conducted in two ICUs at the first affiliated hospital of Gannan Medical University, Ganzhou, China, involving 74 ICU nurses. The participants were allocated to either a micro-course education group or a conventional education group. Of these, 32 nurses were from the General ICU, and 42 were from the Cardiac ICU. Both groups received oral care education, with the micro-course group receiving video-based instruction, and the conventional group receiving PowerPoint-based training (Microsoft® Corp., Redmond, WA, USA). Data on oral care compliance and levels of Knowledge, Attitudes, and Practices (KAP) were collected at baseline and during follow-ups over one month. Statistical analysis was conducted using a mixed-effects model to compare outcomes between the groups, highlighting variations in ICU nurses' oral care practices across different ICU settings. Results Both education methods had statistically significant effects. The micro-course education group showed earlier and more pronounced improvements in oral care compliance. Quantitatively, the micro-course group experienced a mean increase in compliance of 0.281 (p = 0.032) at the third follow-up, whereas the conventional group saw a mean increase of 0.261 (p = 0.042) at the fifth follow-up. Additionally, KAP levels in both groups improved significantly (p < 0.001). Conclusion This study demonstrates that micro-course education has a statistically significant impact on ICU nurses' oral care compliance and levels of KAP in the short term. Although there was no significant difference in oral care compliance between the micro-course and conventional education methods, the micro-course showed certain advantages in teaching quality. Long-term studies are needed to evaluate the sustainability of these improvements. Promoting micro-course education in ICU nursing practice may enhance oral care practices and potentially reduce the incidence of VAP.

Microbiological Concordance of Subglottic Secretion and Tracheal Aspirate Cultures of Critically Ill Patients with Invasive Airway Devices: A Prospective Observational Study

Background

Development of ventilator-associated pneumonia (VAP) is attributed to the microaspiration of pooled secretions around the cuff of airway devices. Despite the emphasis on the use of endotracheal tubes (ET) with subglottic secretion (SS) drainage ports to prevent VAP, the quality of the evidence for this recommendation remains moderate. This prospective observational study analyzed microbiological concordance between SS and endotracheal aspirate (ETA) cultures to generate further evidence in this regard.

Materials and methods

Paired samples (SS and ETA) of 100 consenting patients admitted to intensive care unit (ICU) were sent on day 1, 4, and 7 to the microbiology laboratory where they were transcultured and species identification was performed. The SS and ETA were considered concordant or discordant based on isolated organisms and antibiotic sensitivity profile. Clinical surveillance for VAP was done according to CDC criteria during the first week of ventilation.

Results

For a total of 197 paired samples, the overall concordance of SS and ETA cultures was 71.5%, with day-wise concordances of 68, 76.2, and 73.5% for D1, D4, and D7, respectively. Gram-negatives bacteria were the most frequently isolated, with 125 (31.7%) samples reporting A. baumannii. Amongst 18 patients clinically diagnosed with VAP during the first week of MV, the concordance between SS and ETA was 73.5%, and day-wise concordance was 77.2, 72.2, and 76.9% on D1, D4, and D7, respectively.

Conclusion

A fairly high microbiological concordance was observed in SS and ETA samples obtained from patients with invasive airway devices, and similar concordance was found in patients developing VAP during the first week of ventilation.

How to cite this article

Panigrahi P, Ganesh V, Angrup A, Sahni N, Biswal M, Yaddanapudi L. Microbiological Concordance of Subglottic Secretion and Tracheal Aspirate Cultures of Critically Ill Patients with Invasive Airway Devices: A Prospective Observational Study. Indian J Crit Care Med 2024;28(12):1139-1146.

Infections in acute liver failure - Assessment, prevention, and management

Infections in acute liver failure (ALF) increase the associated morbidity and mortality, and often hamper the possibility of transplantation. Two-thirds of the infections in ALF are bacterial while one-third is fungal. High suspicion for infection is essential whenever there is clinical deterioration. Multi-drug resistant infections are frequently encountered with prolonged ICU stay, invasive lines, ventilation and renal replacement therapy. Since most of the infections in ALF are nosocomial, prevention of infections is crucial by infection control practices in the ICU. Although markers such as CRP, procalcitonin (for bacterial infections), 1,3-beta-D glucan, and galactomannan (fungal infections) aid in the diagnosis, the gold standard is blood culture. Therapy for respiratory infections must be based on BAL or mini-BAL culture. In this article, we discuss the common infections occurring in ALF, methods for early diagnosis and recommended prophylactic, pre-emptive as well as therapeutic options for treating infections in ALF.

Selective decontamination of the digestive tract in a burns unit reduces the incidence of hospital-acquired infections: A retrospective before-and-after cohort study

OBJECTIVE

To evaluate the effect of selective decontamination of the digestive tract (SDD) on hospital-acquired infections (HAIs) in patients with acute burn injury requiring admission to a Burns Unit (BU).

DESIGN

Retrospective before-and-after cohort study, between January 2017 and June 2023. SDD was implemented in March 2019, dividing patients into two groups.

SETTING

Four-bed BU, in a referral University Hospital in Spain.

PATIENTS

All the patients admitted during the study period were eligible for analysis. Patients who died or were discharged within 48hours of admission, and patients with an estimated survival less than 10% not considered for full escalation of therapy were excluded.

INTERVENTION

SDD comprised the administration of a 4-day course of an intravenous antibiotic, and an oral suspension and oral topical paste of non-absorbable antibiotics during the stay in the BU.

MAIN VARIABLE OF INTEREST

Incidence of HAIs during the stay in the BU.

SECONDARY OUTCOMES

incidence of specific types of infections by site (bacteremia, pneumonia, skin and soft tissue infection) and microorganism (Gram-positive, Gram-negative, fungi), and safety endpoints.

RESULTS

We analyzed 72 patients: 27 did not receive SDD, and 45 received SDD. The number of patients who developed HAIs were 21 (77.8%) and 21 (46.7%) in the non-SDD and the SDD groups, respectively (p=0.009). The number of hospital-acquired infectious episodes were 2.52 (1.21-3.82) and 1.13 (0.54-1.73), respectively (p=0.029).

CONCLUSIONS

SDD was associated with a reduced incidence of bacterial HAIs and a decrease in the number of infectious episodes per patient.

Predicting nosocomial pneumonia risk in level-1 trauma patients: An external validation study using the trauma quality improvement program

BACKGROUND

Early identification of patients at risk of nosocomial pneumonia enables the opportunity for preventative measures, which may improve survival and reduce costs. Therefore, this study aimed to externally validate an existing prediction model (issued by Croce et al.) to predict nosocomial pneumonia in patients admitted to US level-1 trauma centers.

METHODS

A retrospective cohort study including patients admitted to level-1 trauma centers and registered in the TQIP, a US nationwide trauma registry, admitted between 2013-2015 and 2017-2019. The main outcome was total nosocomial pneumonia for the first period and ventilator-associated pneumonia (VAP) for the second. Model discrimination and calibration were assessed before and after recalibration.

RESULTS

The study comprised 902,231 trauma patients (N2013-2015 ​= ​180,601; N2017-2019 ​= ​721,630), with a median age of 52 in both periods, 64-65 ​% male, and approximately 90 ​% sustaining blunt traumatic injury. The median Injury Severity Scores were 13 (2013-2015) versus 9 (2017-2019); median Glasgow Coma Scale scores were 15. Nosocomial pneumonia incidence was 4.4 ​%, VAP incidence was 0.7 ​%. The original model demonstrated good to excellent discrimination for both periods (c-statistic2013-2015 0.84, 95%CI 0.83-0.84; c-statistic2017-2019 0.92, 95%CI 0.91-0.92). After recalibration, discriminatory capacity and calibration for the lower predicted probabilities improved.

CONCLUSIONS

The Croce model can identify patients admitted to US level-1 trauma centers at risk of total nosocomial pneumonia and VAP. Implementing (modified) Croce models in route trauma clinical practice could guide judicious use of preventative measures and prescription of additional non-invasive preventative measures (e.g., increased monitoring, pulmonary physiotherapy) to decrease the occurrence of nosocomial pneumonia in at-risk patients.

Removal of Chlorhexidine for Ventilator-Associated Pneumonia Prevention with a Dentist Composing the Intensive Care Unit Team

Purpose

An association between the use of chlorhexidine in mechanically ventilated patients for the purpose of oral hygiene and the prevention of ventilator-associated pneumonia (VAP) lacks conclusive evidence in the literature. Therefore, this study aims to assess the clinical impact of such practice. This evaluation will consider that retention factors, infection foci, and oral biofilm will be regularly removed by a dentist.

Patients and Methods

In this retrospective cohort study, a comparison was made between two groups, one using chlorhexidine and the other using saline solution. Patients from both groups included in this study were admitted between January 2016 to March 2018. Data such as the incidence of VAP, duration of mechanical ventilation (DMV), length of stay (LOS), and mortality rate (MR) were collected and compared between the groups. Only patients aged 18 or older, under mechanical ventilation for more than 48 consecutive hours were included. Were excluded from this study patients with a diagnosis of VAP or other pulmonary infection upon admission or within the first 48 hours of hospitalization. Also not included were those who stayed in the ICU for less than 48 hours. Dental treatment was carried out addressing the regular removal of retention factors, potential oral infection foci, and oral biofilm by a dentist. Additionally, at each appointment, the visible biofilm was removed by the dentist themselves, and the maintenance of oral hygiene was performed daily by the nursing staff. For the statistical analysis the non-parametric Mann-Whitney test was used for comparisons between groups regarding LOS and DMV. Additionally, the associations between groups and VAP, outcomes (discharge or death), and diseases were analyzed using the chi-square test and Fisher's exact test. A significance level of 5% was assumed.

Results

In both evaluated groups, each consisting of 36 patients, the incidence of VAP was identical at 2.8%. Specifically, the chlorhexidine group had an incidence of 2.105 VAP cases per 1000 days of mechanical ventilation (MV), while the placebo group had 2.865 VAP cases per 1000 days of MV (p = 1.000). No significant difference between groups regarding LOS (p = 0.5694) and DMV (p = 0.1136) was found. There was also no significant association between the MR in the two groups (47.2% chlorhexidine, 36.1% placebo) (p=0.3390).

Conclusion

When intensive oral care is performed, the use of chlorhexidine shows no significant change in VAP incidence, MR, LOS, and DMV. Therefore, the dentist, as part of the multiprofessional team, should decide on its use.

Establishment and evaluation of a rapid method for the detection of bacterial pneumonia in hospitalized patients via multiplex PCR-capillary electrophoresis (MPCE)

Cost-effective molecular diagnostic techniques for bacterial pneumonia are limited. We designed primers for 13 bacteria, performed multiplex nucleic acid detection through fragment analysis to obtain pathogen identification results, and established a multiplex PCR-capillary electrophoresis (MPCE) method, which can simultaneously detect 13 pathogens associated with bacterial pneumonia. The sensitivity, specificity, and reproducibility of the MPCE assay were tested, and 420 clinical samples were used to assess the clinical detection ability of MPCE, with the culture method used as a reference. Samples with inconsistent results detected by the two methods were sent for Sanger sequencing. The minimum detection limit of MPCE for 13 bacteria was 6.0 × 103 cfu/mL~2.0 × 106 cfu/mL. No cross-reactivity was observed with other pathogens. The percentage of agreement for reproducibility analysis reached 100%. For the 420 sputum samples, when the culture method was used as the reference, the sensitivity of MPCE to 13 bacteria ranged from 80% to 100%. The specificity for 13 bacteria ranged from 67.1% to 100%. The percentage of agreement between the MPCE and the culture method ranged from 69.7% to 100%. There was no statistically significant difference (P > 0.05) in the detection of Escherichia coli, Enterobacter cloacae complex, Staphylococcus aureus, methicillin-resistant S. aureus, Streptococcus pyogenes, Moraxella catarrhalis, or Legionella pneumophila between the MPCE and the culture method. Clinical samples with negative cultures but positive MPCE results were validated by Sanger sequencing, and the results were consistent with those of MPCE. The MPCE method has high sensitivity and specificity for bacterial pneumonia, enabling the simultaneous and rapid detection of multiple pathogens. It is cost-effective and has potential for clinical application.

IMPORTANCE

This study successfully established a multiplex PCR-capillary electrophoresis detection system that can simultaneously detect 13 pathogens through a single detection method, significantly improving clinical efficiency. It is cost-effective and has potential for clinical application.

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

BACKGROUND

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.

AIM

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.

STUDY DESIGN

A cross-sectional electronic survey was conducted to focus on nurses' knowledge of and compliance barriers to EBGs for preventing VAP.

RESULTS

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.

CONCLUSIONS

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.

RELEVANCE TO CLINICAL PRACTICE

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 abdominal massage in preventing ventilator-associated pneumonia in patients connected to mechanical ventilators: A systematic review

BACKGROUND

Ventilator-associated pneumonia (VAP) is one of the common complications in patients in the intensive care unit. Abdominal massage may prevent the development of VAP by reducing residual gastric volume in enterally fed patients.

AIM

The purpose of this study is to review the literature on randomized controlled and quasi-experimental studies evaluating the effectiveness of abdominal massage in preventing VAP.

METHODS

The PRISMA-P (Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols) criteria were taken as the basis for creating the protocol of the systematic review and writing the article. The systematic review was performed using the Google Scholar, PubMed, Web of Science, Scopus, CINAHL and Cochrane Library databases from December 2023 to January 2024. Studies were selected by determining inclusion and exclusion criteria according to the PICOS method. The studies were evaluated using the Joanna Briggs Institute (JBI) tool for quality assessment.

RESULTS

Three randomized controlled and one quasi-experimental study with a total of 225 participants met the inclusion criteria. The four studies conducted on patients in the intensive care unit showed that abdominal massage reduced VAP. The studies reported no adverse effects of abdominal massage.

CONCLUSION

Promising evidence was found for the effect of abdominal massage in preventing VAP. However, scientific studies with larger samples, of higher quality, and using randomized controls and blinding methods are needed to evaluate the unknown dimensions of abdominal massage and determine its beneficial effects on patients.

RELEVANCE TO CLINICAL PRACTICE

Several non-pharmacological methods may decrease VAP incidence and mortality. Abdominal massage may decrease VAP incidence and mortality.

Problems Related to Endotracheal Intubation as an Input for the Design of a New Endotracheal Tube

Objective

The purpose of the current review is to identify the main problems of endotracheal intubation, which will serve as a basis for the design requirements for a novel endotracheal tube.

Methodology

A PICO systematic search was conducted in PubMed up to December 2021 to identify issues related both to the endotracheal intubation procedure and device-specific factors.

Results

Two primary categories of problems were identified during endotracheal intubation: a) Issues related to laryngotracheal symptoms such as cough, hoarseness, aphonia, dysphonia, dysphagia, swallowing difficulties and the risk of stenosis with long-term intubation. The underlying pressure, abrasion and/or decubitus phenomena should be considered in a new design approach. b) Issues related to the cuff sealing and microaspirations, where the risk of ventilator-associated pneumonia (VAP) highlights the need to improve the design.

Discussion & Conclusion

This review has yielded valuable input for rethinking the design of endotracheal tubes to ensure an efficient and safe airway. This new design should focus on the protection of anatomical structures, avoid or reduce the phenomena of laryngotracheal symptoms, and even reduce the risk of ventilator-associated-pneumonia (VAP) and/or prevent the need for certain tracheostomies.

Hospital-Acquired and Ventilator-Associated Pneumonia Early After Lung Transplantation: A Prospective Study on Incidence, Pathogen Origin, and Outcome

BACKGROUND

Hospital-acquired (HAP) and ventilator-associated pneumonia (VAP) are important complications early (<30 days) after lung transplantation (LT). However, current incidence, associated factors, and outcomes are not well reported.

METHODS

LT recipients transplanted at our institution (July 2019-January 2020 and October 2021-November 2022) were prospectively included. We assessed incidence and presentation of pneumonia and evaluated the impact of associated factors using regression models. We also evaluated molecular relatedness of respiratory pathogens collected peri-transplant and at pneumonia occurrence using pulsed-field gel electrophoresis (PFGE).

RESULTS

In the first 30 days post-LT, 25/270 (9.3%) recipients were diagnosed with pneumonia (68% [17/25] VAP; 32% [8/25] HAP). Median time to pneumonia was 11 days (IQR, 7-13); 49% (132/270) of donor and 16% (44/270) of recipient respiratory peri-transplant cultures were positive. However, pathogens associated with pneumonia were not genetically related to either donor or recipient cultures at transplant, as determined by PFGE. Diagnosed pulmonary hypertension (HR, 4.42; 95% CI, 1.62-12.08) and immunosuppression use (HR, 2.87; 95% CI, 1.30-6.56) were pre-transplant factors associated with pneumonia. Pneumonia occurrence was associated with longer hospital stay (HR, 5.44; 95% CI, 2.22-13.37) and VAP with longer ICU stay (HR, 4.31; 95% CI, 1.73-10.75) within the first 30 days post-transplantation; 30- and 90-day mortality were similar.

CONCLUSIONS

Prospectively assessed early pneumonia incidence occurred in ∼10% of LT. Populations at increased risk for pneumonia occurrence include LT with pre-transplant pulmonary hypertension and pre-transplant immunosuppression. Pneumonia was associated with increased healthcare use, highlighting the need for further improvements by preferentially targeting higher-risk patients.

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

BACKGROUND

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.

METHODS

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 48 h 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.

RESULTS

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.

CONCLUSION

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.

The burden of healthcare-associated infections in New Zealand public hospitals 2021

BACKGROUND

There are no contemporary data on the burden of healthcare-associated infections (HAIs) in New Zealand.

OBJECTIVES

To estimate the economic burden of HAIs in adults in New Zealand public hospitals by number and monetary value of bed days lost; number of deaths, number of life years lost, and the monetary value (in NZ dollars); Accident Compensation Commission (ACC) HAI treatment injury payments; and disability-adjusted life years (DALYs).

METHODS

The annual incidence rate was calculated from the observed prevalence of HAIs in New Zealand, and length of patient stays. Total HAIs for 2021 were estimated by multiplying adult admissions by incidence rates. The excess length of stay and mortality risk attributed to those with HAI was calculated using a multistate model. Payments for treatment injuries were obtained from the ACC. DALYs for HAIs were estimated from the literature.

RESULTS

The incidence rate of HAI was 4.74%, predicting 24,191 HAIs for 2021, resulting in 76,861 lost bed days, 699 deaths, with 9,371 years of life lost (YoLL). The annual economic burden was estimated to be $955m comprised of $121m for lost bed days, $792m for cost of YoLL, and $43m ACC claims. There were 24,165 DALY which is greater than many other measured injuries in New Zealand, eg motor vehicle traffic crashes with 20,328 DALY.

CONCLUSIONS

HAIs are a significant burden for patients, their families, and the public health system. Preventive guidelines for many HAIs exist and a strategic plan is needed to reduce HAIs in New Zealand.

A Long-Term Outcome of Symptomatic Middle Cerebral Artery Undergoing Intracranial Angioplasty or Stenting

OBJECTIVE

For symptomatic stenosis in the middle cerebral artery (MCA), intracranial angioplasty and stenting are frequently employed. However, limited data exist regarding their long-term impact. Our study demonstrates the long-term advantages in preventing ischemic events through a 5-year follow-up period.

METHODS

A set of 41 individuals with symptomatic stenosis in the MCA who underwent angioplasty or stenting procedures between October 2004 and April 2018 at various hospitals in Southwest China were prospectively enrolled in the study. The rates of successful revascularization, complications, imaging observations, and clinical outcomes were systematically assessed.

RESULTS

A total of 41 individuals successfully underwent stenting, respectively. After stenting, the extent of stenosis was decreased from 71.8% (56-87.8%) to 24.9% (0-45%). The mean follow-up period is 36.9 ± 13.68 months (range, 11-67 months). There was no deterioration of neurological function or a new ischemic event. A DSA or CT angiography was conducted after the procedure and demonstrated no in-stent restenosis. No patient experienced restenosis below 50% during the mean follow-up period. The morbidity and mortality rates of the case series were 7.3% and 2.4%, respectively.

CONCLUSIONS

In the treatment of symptomatic MCA atherosclerotic stenoses, intracranial angioplasty and stenting are demonstrated to be technically feasible and safe. Its early and long-term efficacy on ischemic event prevention is acceptable, with a reduced level of restenosis, although the representative sample is tiny.