COMPARISON OF TWO LEVELS OF NEGATIVE PRESSURE IN OPEN TRACHEAL SUCTIONING ON OUTCOME OF CARE METRICS AMONG ADULT PATIENTS IN CRITICAL CARE UNIT IN A KENYAN HOSPITAL: A RANDOMIZED CONTROLLED TRIAL
Abstract
Background: Tracheal Tube Suctioning is a necessary procedure on intubated patients receiving mechanical ventilation that optimizes oxygenation and ventilation. Unfortunately, there are differences in opinion and practice on the most suitable suction pressure. Objective: To compare 180mmHg and 100mmHg negative suction pressures in open tracheal tube suctioning among adult patients in Intensive Care Unit at Machakos Level Five Hospital on outcome of care metrics. Methods: This study was a randomized controlled trial involving 76 participants randomly allocated to either 180mmHg or to 100mmHg negative suction groups to establish any differences in outcome of care metrics. Independent t test or its non-parametric equivalent was used to determine the differences in the duration of: mechanical ventilation, tracheal tube and stay in the Intensive Care Unit; and Chi-square test was used to determine homogeneity and mortality between the groups. Results: Average duration of mechanical ventilation was 3.6 days, duration of tracheal tube of 4.7 days, length of stay in the Intensive Care Unit of 5.7 days and overall mortality of 54%. There was no significant difference between the two groups on length of mechanical ventilation, duration of tracheal tube, length of stay in ICU and mortality in ICU (p=0.328, p=0.411, p=0.839, and p=0.162, respectively).
Conclusion: The two negative suction pressures tested did not differ on critical care outcome metrics though inherently different in their suction potential with 180mmHg being more powerful.
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