Facteurs pronostiques des pneumopathies acquises sous ventilation mécanique en réanimation polyvalente du CHU d'Angre (RCI) / Prognostic factors for pneumopathy acquired under mechanical ventilation in multi-purpose resuscitation at the Angre CHU (RCI)

Objectifs : Identifier les facteurs de mauvais pronostic des pneumopathies acquises sous ventilation mécanique(PAVM) afin d'améliorer leur prise en charge.Patients et methode : Etude prospective, descriptive et analytique portant sur les patients admis en réanimation du CHU d'Angré du 1er novembre 2019 au 31 juillet 2021 et ayant présenté une PAVM.Resultats : Nous avons colligé 43 patients sur 625 admissions soit 6,88%. L'âge moyen était de 49,06 ans. Le sex ratio était de 0,38. Le principal motif d'admission était le coma avec 88,37%. L'HTA et le diabète étaient les principaux antécédents .Les PAVM précoces représentaient 53,49%. Le Klebsiella pneumoniae était le principal germe. Les patients intubés à l'admission représentaient 79,07%. La durée moyenne de ventilation était de 26,95 jours et la durée moyenne d'hospitalisation était de 30,8140 jours. Une antibiothérapie probabiliste a été réalisée chez 75,76% des patients. La mortalité était de 76,74%. Les facteurs de mortalité étaient une durée de ventilation mécanique supérieure à 15 jours et l'âge supérieur à 50 ans.Conclusion :La mortalité secondaire au PAVM demeure élevée. L'identification des deux facteurs pronostiques devrait améliorer la prise en charge ultérieure de tous nouveaux cas

Objectives: To identify the factors of poor prognosis of ventilator-associated lung disease (VAP) in order to improve their management. Patients and method: Prospective, descriptive and analytical study of patients admitted to intensive care at the Angré University Hospital from November 1, 2019 to July 31, 2021 and having presented VAP.Results: We collected 43 patients out of 625 admissions, i.e. 6.88%. The average age was 49.06 years. The sex ratio was 0.38. The main reason for admission was coma with 88.37%. Hypertension and diabetes were the main antecedents. Early VAP accounted for 53.49%. Klebsiella pneumoniae was the main germ. Patients intubated on admission accounted for 79.07%. The average duration of ventilation was 26.95 days and the average duration of hospitalization was 30.8140 days. Probabilistic antibiotic therapy was performed in 75.76% of patients. Mortality was 76.74%. The mortality factors were duration of mechanical ventilation greater than 15 days and age greater than 50 years.Conclusion:Secondary mortality from VAP remains high. The identification of the two prognostic factors should improve the subsequent management of all new cases.

High-frequency oscillatory ventilation in a tertiary paediatric intensive care unit in an academic hospital in Johannesburg, South Africa

Background. High-frequency oscillatory ventilation (HFOV) remains an option for the management of critically ill children when conventional mechanical ventilation fails. However, its use is not widespread, and there is wide variability reported with respect to how it is used. Objectives. To describe the frequency, indications, settings and outcomes of HFOV use among paediatric patients with a primary respiratory disorder admitted to a tertiary paediatric intensive care unit (PICU). Methods. The study was a 2-year, single-centre, retrospective chart review. Results. Thirty-four (32.7%) patients were managed with HFOV in the PICU during the study period. Thirty-three of the 34 patients had paediatric acute respiratory distress syndrome. Indications for HFOV were inadequate oxygenation in 17 patients (50%), and refractory respiratory acidosis in 15 patients (44.1%) (2 patients did not fit into either category). Approaches to the setting of HFOV varied considerably, particularly with respect to initial pressure around the airways. HFOV was effective at improving both oxygenation, with a median (interquartile range (IQR)) decrease in oxygenation index of 6.34 (5.0 - 9.5), and ventilation with a the median decrease in PaCO2 of 67.6 (46.2 - 105.7) mmHg after 24 hours. Overall mortality was 29.4% in the HFOV group, which is consistent with other studies. Conclusion. HFOV remains an effective rescue ventilatory strategy, which resulted in rapid and sustained improvement in gas exchange in patients with severe hypoxaemia and/or severe respiratory acidosis, particularly in the absence of extracorporeal support. However, the variability in practice and the adverse effects described highlight the need for future high-quality randomised controlled trials to allow for development of meaningful guidelines to optimise HFOV use

Recent predictive parameters for successful weaning from mechanical ventilation in critically Ill patients

Background: Removal of patients from mechanical ventilation (MV) has been termed liberation, discontinuation, withdrawal and most commonly weaning. Weaning covers the entire process of liberating the patient from mechanical support and from the endotracheal tube. Although weaning from MV is successful in most cases, the first attempt fails in 20% of patients. In addition, weaning accounts for over 40% of the total MV time, the proportion varying in function of the etiology of respiratory failure. Objective: The aim of this study was to evaluate the recent protocols of successful weaning from mechanical ventilation of critically ill patients, depending on central venous oxygen saturation, ultrasonographic assessment of diaphragmatic movement, and serial arterial blood gases to assess failure rate 48 hours after weaning. Patients and methods: This prospective randomized study included a total of 90 mechanically ventilated Egyptian patients of both sexes, ASA (I-II) attending at least for 48 hours at intensive care unit, AlAzhar University Hospitals. The included subjects were divided into three groups depending on method of monitoring; group A: serial arterial blood gases, group B: Central venous oxygen saturation and group C: Ultrasonographic assessment of diaphragmatic movement pre and post spontaneous breathing trial. All patients were subjected to daily monitoring of the following weaning parameters: static and dynamic compliances and inspiratory resistance, intrinsic positive end expiratory pressure (Auto PEEP) and Maximum inspiratory pressure (MIP). Results: There is highly statistically significant difference between patients as regard weaning outcome. As the group depended on normal ultrasonographic assessment of diaphragmatic movement, had the largest number of patients with successful weaning. Conclusion: Normal ultrasonographic assessment of diaphragmatic movement proved to be the most important criteria for successful weaning from mechanical ventilation

Reducing Ventilator-Associated Pneumonia in Neonatal Intensive Care Unit Using "VAP Prevention Bundle"

Background and study aim : Ventilator-associated pneumonia (VAP) is a serious health care- associated infection, resulting in high morbidity and mortality. It also prolongs hospital stay and drives up hospital costs. Measures employed for preventing ventilator-associated pneumonia in developing countries are scarcely reported. The aim of the current work is to assess the efficacy of our designed "VAP prevention bundle" in reducing VAP rates in the neonatal intensive care unit (NICU). Patients and Methods: This prospective before-and-after study was conducted at Zagazig university hospital NICU; all neonates who had mechanical ventilation during the period from January 2013 to March 2014 for ≥48 hours were eligible after parental consent. VAP rates were evaluated before (phase-I) and after (phase-II) full implementation of the comprehensive preventive measures specifically designed by our infection control team. Results: Out of 143 mechanically ventilated neonates, 73 patients developed VAP (51%) throughout the study period (2500 mechanical ventilation days). The rate of VAP was significantly reduced from 67.8% (42/62) corresponding to 36.4 VAP episodes/1000 mechanical ventilation days (MV days) in phase-I to 38.2% (31/81) corresponding to 23 VAP/1000 MV days (RR 0.565, 95% confidence interval 0.408- 0.782, p= 0.0006) after VAP prevention bundle implementation (phase-II). Parallel significant reduction in MV days/case were documented in the post-intervention period (21.50±7.6 days in phase-I versus 10.36 ± 5.2 days in phase-II, p= 0.000). There were trends toward reduction in NICU length of stay (23.9±10.3 versus 22.8±9.6 days, p=0.56) and overall mortality (25% versus 17.3%, p=0.215) between the two phases which didn't reach statistical significance. The commonest micro-organisms isolated throughout the study were gram-negative bacteria (63/66, 95.5%) particularly Klebsilla pneumonia (55/66, 83.4%). Conclusion: The implementation of our multifaceted infection control bundle has resulted in a significant reduction of VAP rates, length of stay and hospital cost in our NICU. These rates are still far behind the internationally acknowledged ones