Abstract

Introduction: Suction is the most important procedure in patients under mechanical ventilation, and could be performed by two open and closed methods. In addition to considering suction principles, selection of an appropriate method for doing this could be helpful in decreasing the complications such as tissue hypoxia, heartbeat alteration, and blood pressure. The aim of this study was to compare the effect of tracheal tube suction using both open and closed methods, on hemodynamic indexes of COPD patients under mechanical ventilation. Materials and Methods: The present study is a semi-experimental one, which is performed on a single group. In this study, 48 patients affected by chronic obstructive pulmonary disease that were hospitalized in Intensive Care Unit of Amiralmomenin Ali hospital of Zabol in 2017, were selected based on accessible sample selection criteria. Number of heartbeats, systolic and diastolic blood pressure, and arterial medium pressure were assessed and recorded at three times: before, just after, and 10 minutes after suction using open and closed methods, in the first, third, and fifth days. Tracheal tube suction performed on patients with 120 mmHg of negative pressure and for 10 seconds in each time, in a random manner (via throwing coins) and with 90 minute intervals, using two open and closed methods (each method performed one time). Data were collected and analyzed using SPSS version 22. Results: According to Wilcoxon statistical test, number of heartbeats, systolic and diastolic blood pressure, and arterial medium pressure before, just after, and 10 minutes after suction using open and closed methods, in the first, third, and fifth days, showed no statistical significant difference (p>0.005). Conclusion: Results of the present study showed that there was no statistical significant difference between two open and closed suction methods, regarding to effect on hemodynamic indexes of patients affected by chronic obstructive pulmonary disease. Comparison of this result with other studies showed a wide variation; so that, several studies indicated that closed suction method is preferred due to maintenance of most of hemodynamic indexes in comparison to open suction method.