毛细血管充盈试验(CRT)但一种非侵入性的理想临床试验,可对病人的血容量及循环功能提供有价值的资料。但在用于临床创伤评价过程中缺乏实验依据.因此,作者进行了如下研究.病人分二组:一组为成人自愿献血者,在献血450ml前、后立即测定体位性生命体征和CRT. Capillary filling test (CRT) but a noninvasive ideal clinical trial, the patient’s blood volume and circulatory function can provide valuable information. However, there is a lack of experimental evidence for the clinical evaluation of trauma.Therefore, the study was conducted as follows: The patients were divided into two groups: one was a voluntary blood donor in adults, and the postural vital signs and CRT were measured immediately before and after blood donation was 450ml.