Impact of Early and Regular Mobilization on Vital Signs and Oxygen Saturation in Patients Undergoing Open-Heart Surgery

Abstract Introduction: This quasi-experimental study aimed to evaluate the impact of early and regular mobilization on vital signs and oxygen saturation in open-heart surgery patients. Methods: The study universe comprised patients undergoing open-heart surgery in the cardiovascular intensive care unit of a heart center. The study sample consisted of patients who underwent open-heart surgery from November 2016 to April 2017, met the inclusion criteria, and voluntarily agreed to participate in the study. The study included 75 patients. Of these, 67 completed the mobilization program in two days, starting on the first postoperative day. Each patient was mobilized three times: twice on the first postoperative day and once on the second postoperative day. Vital signs and oxygen saturation for each patient were measured 10 minutes before and 20 minutes after each mobilization. Results: The difference between pulse and systolic blood pressure values measured before and after the first mobilization was statistically significant (P<0.05). In addition, the difference between the mean systolic blood pressure values before the first mobilization and after the third mobilization (123.43±14.09 mmHg and 117.94±14.05 mmHg, respectively) was statistically significant (P<0.05). The other parameters measured in relation to the mobilizations were in the normal range. Conclusion: Early and frequent mobilization did not cause vital signs and oxygen saturation to deviate from normal limits in open-heart surgery patients.

摘要引言：本项准实验研究（quasi-experimental study）旨在评估早期常规活动对心脏直视手术（open-heart surgery）患者生命体征（vital signs）及血氧饱和度（oxygen saturation）的影响。
方法：本研究的总体人群为某心脏中心心血管重症监护室（cardiovascular intensive care unit）接受心脏直视手术的患者。研究样本为2016年11月至2017年4月期间接受心脏直视手术、符合纳入标准（inclusion criteria）且自愿参与本研究的患者，共纳入75例。其中67例于术后首日启动活动方案，且在2天内完成全部活动：术后首日进行2次活动，术后次日进行1次活动。每位患者均在每次活动前10分钟、活动后20分钟测量生命体征及血氧饱和度。
结果：首次活动前后测得的脉搏与收缩压数值差值具有统计学意义（P<0.05）。此外，首次活动前与第三次活动后的平均收缩压分别为123.43±14.09 mmHg与117.94±14.05 mmHg，二者差值亦具有统计学意义（P<0.05）。其余与活动相关的监测参数均处于正常范围。
结论：早期高频活动未使心脏直视手术患者的生命体征及血氧饱和度偏离正常限值。