IRCT2016082817800N2 IRCT 2016-09-11 Vice chancellor for research, Gonabad University of Medical Sciences The comparison of the effect of position change on the arterial oxygen saturation The comparison of the effect of position change on the arterial oxygen saturation in different parts of the body in patients with and without cardiac and respiratory disorders 2016-09-22 anticipated 165 Complete https://irct.ir/trial/16293 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. 2 Condition 1: Respiratory patients. Condition 2: Cardiac patients. Intervention 1: At first, The patients without cardiac and respiratory disease will be placed in semi-sitting position for 15 minutes and arterial blood oxygen saturation will be measured at the same time in the three organs earlobes, fingertips and the tip of toe. Then the the patient will be placed in the supine, prone and semi-sitting position and oxygen saturation will be measured in different organs at the same time. Intervention 2: At first, In patient with cardiac and respiratory disease will be placed in semi-sitting position for 15 minutes and arterial blood oxygen saturation will be measured at the same time in the three organs earlobes, fingertips and the tip of toe. Then the the patient will be placed in the supine, prone and semi-sitting position and oxygen saturation will be measured in different organs at the same time.