Correlation of spirometry Parameters and Clinical Variables among Post Extubated Patients in Selected Intensive Care Unit of Tertiary Care Hospital

Introduction: Intubation is the common medical procedure which involves the insertion of a plastic tube which is a flexible tube in the throat of the patient. Reintubation is described as the failed extubation or patient get intubation after extubation who had been initially tracheal intubated.The purpose of the study was to determine the Spiro metric parameters among post Extubated patients and the application of Non-Invasive Ventilation for - prevention of reintubation.Materials and Method: Quantitative research approach with purposive sampling technique was adopted to include ۳۸ participants. Data were collected by providing spirometry immediately after extubation. The data were analyzed using descriptive statistics.Results: The result shows that ۳۶.۸۴% of participants required non-invasive ventilation after extubation who were having FEV۱ between ۰.۳۸-۱.۴۸, FVC between ۰.۴۴-۱.۷۵, PEFR between۵۰-۷۰. Hemodynamic variable like saturation (۰.۰۱), PCO۲ (۰.۰۰), PO۲ (۰.۰۳), and HCO۳ (۰.۰۰) were highly significant at the level of p < ۰.۰۵. Proving that patients whose saturation level& ABG profile like PCO۲, PO۲, and HCO۳ are not maintained required NIV after extubation.Conclusion: Study concludes that in Extubated patient’s prophylactic non-invasive ventilation prevents extubation failure assessing the Spiro metric parameters in patients who can maintain saturation with less oxygen support, is also important in predicting good outcome of non-invasive ventilation after extubation.