Lung aeration loss as a predictor of reintubation using lung ultrasound in mechanically ventilated patients

ABSTRACT Optimal time to wean from mechanical ventilation remains a challenge in most critically ill patients. There have been studies looking at the factors that aid weaning from mechanical ventilation; however the results have been variable. Recent evidence suggests lung ultrasound can predict successful weaning from mechanical ventilation. This study assesses the ability of the lung aeration scoring using LUS to predict successful weaning in critically ill patients This prospective, observational and non-interventional study was performed in a general ICU in a large university hospital over a period of 6 months. We included all patients who needed mechanical ventilation for more than 48 hours (n=50) and were eligible for Spontaneous Breathing Trial. LUS was performed during SBT and lung aeration Scoring was calculated in 12 lung regions. Points were allocated according to the worst ultrasound pattern observed: N (normal lung pattern) = 0, B1 lines (multiple well-defined B lines) =1, B2 lines (multiple coalescent B Lines) = 2, c (consolidation or atelectasis) = 3. Relevant data were collected from patients, including demographic and LUS aeration scoring in a standardized case report form. Patients were divided into two groups: Group 1 and Group 2 based on the failure and success in weaning, respectively. The LUS aeration scoring was applied to both groups to assess the predictability of weaning failure. Lung aeration scores were significantly higher in patients in Group F compared to Group S (p