Effect of Passive Movements of Lower Extremity on Hemodynamic Parameters of the Patients under Ventilator

Aims: The present study was conducted with the aim of determining the effect of passive movements on hemodynamic parameters, including systolic blood pressure, diastolic blood pressure, mean arterial pressure, pulse, and pulse pressure of patients under ventilation. Materials & Method: In this controlled clinical trial, 64 patients under ventilation in Kohgiluyeh and Boyer-Ahmad University of Medical Sciences and Health Services and Shiraz University of Medical Sciences were selected by convenience sampling method. They were assigned to experimental (32 people) and control (32 people) groups, using random block assignment. The experimental group, in half supine position at 30°, received passive movements of the lower extremities, according to the protocol, by a therapist for 22 minutes. Then, the values of hemodynamic parameters were recorded after 22 minutes and at intervals of 2, 6, 12 and 24h after the post-test, as follow-up times. Data were analyzed by SPSS 21 software, using independent t-test, Chi-square test and repeated measure of variance analysis. Findings: In hemodynamic parameters of the experimental group in each time interval, including immediately, 2 hours, 6 hours, 12 hours, and 24 hours after the completion of the research interventions, compared with their amount at the starting point of the study, and in comparison with these changes in the control group, there was no significant difference (p>0.05). Conclusion: Passive movements of lower extremity have no effect on hemodynamic parameters, including systolic blood pressure, diastolic blood pressure, mean arterial pressure, pulse, and pulse pressure of patients under ventilation.