the effect of chair position on respiratory parameters in patients undergoing mechanical ventilation

the effect of chair position on respiratory parameters in patients undergoing mechanical ventilation     fallahinia ghh [1] ,baghcheghi n [2] ,oshvandi kh [3] *,taher a [4] , soltanian ar [5]     received: 7 feb, 2013 accepted: 15 may, 2013    abstract  background & aims : there are many barriers to the movement of patients requiring mechanical ventilation and these patients are at risk for complications of immobility, especially pulmonary complications so along with the use of mechanical ventilation in patients, we should take steps to create movements in them. the aim of this study was to determine the effect of chair position on respiratory parameters of patients undergoing mechanical ventilation.   materials & methods : in this randomized clinical trial groups, 60 mechanically ventilated patients admitted to icu in besat hospital of hamadan with convenience sampling were studied . 30 patients were in chair position for half an hour (put the head of the bed at an angle of 70 degrees and foot of the bed at an angle of -75 degrees), and the other 30 patients (c ontrol group) were in i nitial position for half an hour (put the head of the bed at an angle of 30 degrees and knees straight). respiratory parameters (respiratory rate, tidal volume, minute ventilation and arterial oxygen saturation) before and immediately after half-time were measured and recorded in two groups. the d ata were analyzed with spss16 to carry out paired t-test and t-test with significant level of p <0.05.   result : research findings showed no significant difference in the respiratory control group index values. respiratory rate before and after the chair position in the intervention group and between the two groups was not significantly different, but in the intervention group, increase in tidal volume, minute ventilation and arterial oxygen saturation was observed in the chair position that were statistically significant.   conclusion: based on the results, it seems that placing the patient in the chair position can be effective in improving their respiratory parameters.   keywords: chair position, respiratory parameters, mechanical ventilation     address: faculty of nursing & midwifery, hamedan university of medical sciences, iran.  tel: (+98) 811 8276051   email: [email protected]    [1] instructor, faculty of nursing & midwifery, hamedan university of medical sciences, iran.  [2] msc student of critical care nursing, faculty of nursing & midwifery, hamedan university of medical sciences, iran.  [3] phd nursing, assistant professor of nursing, faculty of nursing & midwifery, hamedan university of medical sciences, iran . (corresponding author)*  [4] intensive care medicine fellowship, assistant professor of medicine, faculty of medicine, hamedan university of medical sciences, iran  [5] phd biostatistics, assistant professor of biostatistics, department of health, hamedan university of medical sciences, iran