Background: ASV is adaptive mode of ventilation where a target ventilator pattern is automatically chosen. This study was undertaken to compare the clinical parameters between ASV and ACMV mode of ventilation.

Material and Methods: A prospective study was undertaken in 60 critically ill patients who were randomly divided in to two equal groups i.e., ASV and ACMV modes of mechanical ventilation. Group A patients were ventilated by using ASV mode of ventilation and 30 patients of Group B were ventilated by using ACMV mode of ventilation. The patients particulars including number of days of ventilation, number of days of in ICU and number deaths were entered. APACHE and SOFA scores were calculated and compared.

Results: About 40.0% of the cases in ACMV group and 33.3% in ASV group were aged more than 60 years. Males were higher in ACMV group and females in ASV group. Mean number of days of ventilation in ACMV group was 6.8 days in ASV group was 5.53 days. Mean number of days of stay in ICU was 9.53 days in ACMV group and 8.53 days in ASV group which was statistically significant. About 10.0% of the cases in ACMV group and 6.7% of the cases in ASV group died during follow up. Mean APACHE score was 22.13 in ACMV group and 18.0 in ASV group and it was statistically significant between the two groups. SOFA score was 5.8 ACMV group and 4.57 in ASV group which was statistically significant.

Conclusion: This study concludes that, ASV mode of ventilation in reduction of ICU stay, duration of ventilation, low APACHE & SOFA scores.