The Effect of Deep Breathing Exercise on arterial blood gases after coronary artery bypass Graftingg(CABG)

After coronary artery bypass surgery، pulmonary complications and oxygenation disorders are common، which have an important role in disablement and mortality. Different methods are used for improvement of pulmonary function and oxygenation. In this study we aimed at evaluating the effect of deep breathing exercise on arterial blood gases after CABG. This clinical trial was conducted on fifty patients who had CABG in Chamran hospital and Sina heart center of Isfahan، 2012. The patients were randomly located in groups of intervention and control. The intervention was the use of deep breathing exercises initiated after extubation while just the routine breathing exercises were used for control group. Arterial blood gases of all patients were measured before surgery، after extubation، second and the third postoperative days، and analyzed by independent t test. the arterial blood gases measured in before surgery، after extubation، first and second days were the same in intervention and control groups. In the third postoperative day، there was a significant difference in the mean of arterial blood oxygen (81. 3±4. 6 vs. 72. 7±7. 1 respectively، p=0. 01)، arterial blood carbon dioxide (37 ±1. 9 vs. 43. 7±3. 2 respectively، p >0. 001) and oxygen saturation (96. 8±1/4 vs. 90. 5±2. 1 respectively، p >0. 001). in terms of the results، the deep breathing exercise is significantly more effective in improvement of blood arterial gases parameters.