Effect of early off-bed activity on the respiratory function recovery of patients treated with coronary artery bypass grafting

ObjectiveTo study the effects of early off-bed activities on respiratory function recovery of patients treated with coronary artery bypass grafting(CABG).

MethodsOne hundred and twenty patients met with the criteria of CABG were randomly divided into the observation group(n=58) and control group(n=62).The time of postoperative off-bed activity in observation group and control group were 12 to 24 hours and 24 to 48 hours, respectively.The patients were evaluated according to the criteria of early activity.Two groups got out of bed activity according to the procedure of the first time of off-bed activity, and performed functional exercises according to the activity schedule.The degree of respiratory dysfunction and deep inspiratory volume after 1 to 7 days of operation, partial pressure of oxygen and CO₂ on the 2nd, 4th and 7th day after operation, and incidence rate of pulmonary complications were compared between two groups.

ResultsThe difference of the degree of respiratory dysfunction after 1 day of operation was not statistically significant(P>0.05), and which in observation group at postoperative 2 to 7 days were significantly lower than that in control group(P < 0.05 to P < 0.01).The deep inspiratory volume in observation group after 1 to 7 days of operation were higher than that in control group(P < 0.01).The partial oxygen pressure in observation group on the 2nd, 4th and 7th day after operation were higher than that in control group(P < 0.01).The partial pressure of CO₂ in observation group on the postoperative 4th day was lower than that in control group(P < 0.01), and the differences of partial pressure of CO₂ on the postoperative second and 4th day were not statistically significant between two groups(P>0.05).The incidence rate of pulmonary complications in observation group was lower than that in control group(P < 0.05).

ConclusionsEarly off-bed activity in patients treated with CABG is safe and feasible.The earlier the out-of-bed activity is, the lower the incidence rate of pulmonary complications is, and the better the recovery of respiratory function is.