Stanek K S, Guyton G P, Hurford W E, Park Y S, Ahn D W, Qvist J, Falke K J, Hong S K, Kobayashi K, Kobayashi H
Department of Anesthesia, Harvard Medical School, Massachusetts General Hospital, Boston.
Undersea Hyperb Med. 1993 Dec;20(4):297-307.
Arterial oxygen saturation during breath-hold diving has not previously been measured continuously. We devised a submersible, waterproof, backpack computer to continuously record heart rate, depth, and arterial oxygen saturation (SPO2) as determined by earlobe pulse oximetry. Our measurements showed that one assisted (Funado) diver had reduced SPO2 values immediately after surfacing from 22 dives which lasted 23-76 s, from a mean of 99 +/- 1% SPO2 to 96 +/- 3% SPO2. SPO2 returned to 97 +/- 2% within 15 s after surfacing (P < 0.05 surface value differs from predive base line). Four unassisted (Cachido) divers showed no significant reduction of mean predive SPO2 below 98 +/- 2% at any time during the dive or recovery period in 92 routine dives lasting from 15 to 44 s. Upon surfacing from diving, mean SPO2 was 98 +/- 2% and the mean SPO2 15 s after surfacing was 97 +/- 3% for the unassisted divers. Three Cachido divers were asked to dive and breath hold for as long as possible. Mean SPO2 at the conclusion of breath holding was 73% after an average dive and breath hold lasting 69 s.
此前尚未对屏气潜水过程中的动脉血氧饱和度进行连续测量。我们设计了一种可潜水的、防水的背包式计算机，以连续记录心率、深度以及通过耳垂脉搏血氧测定法测定的动脉血氧饱和度（SPO2）。我们的测量结果显示，一名辅助（船户）潜水员在22次持续23 - 76秒的潜水浮出水面后，其SPO2值立即下降，从平均99±1%的SPO2降至96±3%的SPO2。浮出水面后15秒内，SPO2恢复至97±2%（P < 0.05，浮出水面时的值与潜水前基线不同）。在92次持续15至44秒的常规潜水中，四名无辅助（卡奇多）潜水员在潜水或恢复期间的任何时候，其潜水前平均SPO2均未显著低于98±2%。对于无辅助潜水员，潜水浮出水面时，平均SPO2为98±2%，浮出水面后15秒时的平均SPO2为97±3%。三名卡奇多潜水员被要求尽可能长时间地潜水并屏气。在平均潜水和屏气持续69秒后，屏气结束时的平均SPO2为73%。
