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目的在２１ ｄ 头低位卧床的１ ～１０ ｄ 使用套带，能明显阻止立位耐力下降，在后续卧床中观察套带组不使用套带时的心血管脱适应变化，以进一步验证套带的防护效果。方法 套带组继卧床第１ ～１０ 天使用套带后、卧床第１１ ～１７ 天不使用套带，最后４ ｄ 再使用套带。在卧床第１７ 、２１ 天时进行正立位７５°耐力检查。结果套带组５ 人（ 卧床第１０ 天时都通过２０ ｍｉｎ 立位） 停用套带１ ｗｋ ，５ 人中有２ 人未通过２０ ｍｉｎ 立位，一名１７ ｍｉｎ 出现晕厥前症状，另一名４ ｍｉｎ 出现晕厥。再用套带４ｄ ，套带组５ 人又全部通过２０ ｍｉｎ 立位。结论（１） 停止使用持续加压套带引起了心血管脱适应，（２）卧床后期四肢使用持续加压套带４ ｄ 能有效阻止立位耐力下降。
Objective To investigate the changes of cardiovascular desensitization during the first and second days of bed rest in a 21-day-old low lying bed, which can significantly prevent the decline of standing stamina. Protective effect. Method group with the bed group after bed rest 1 to 10 days after the use of straps, bed 11 to 17 days do not use the straps, the last 4 d and then use the straps. On the 17th and 21st days of bed rest, the erect position 75 ° endurance test was performed. Results In the laparotomy group, 5 people (passing the 20-minute standing position on the 10th day of bed rest) stopped using the straps for 1 week. Two of the 5 patients did not pass the 20-minute standing position and the other had a 17-min pre-syncope symptom. 4 min appeared syncope. Re-set 4d, set 5 sets of people and all through the 20min position. Conclusions (1) The discontinuation of continuous compression cuff caused cardiovascular de-adaptation, and (2) the use of continuous compression cuffs on the extremities of the bed rest for 4 days effectively prevented the decline of standing stamina.