Okuyama M, Nakamura I, Kemmotsu O
Department of Anesthesia, Kohnan Hospital, Sapporo.
Masui. 2000 Jun;49(6):652-4.
We describe our experience of an accidental decrease in the air flow during air/oxygen sevoflurane anesthesia. According to the malfunction of an air compressor system, dehydration of the compressed air was inadequate, and the wet air was delivered to the anesthesia machine. The moisture was formed at a flow control valve to cause a gradual decrease in the air flow. The low-pressure alarm did not work at that time, because the pressure of the air supply was normal. There are two types of medical air, one is produced from the ambient air by air compressor system and another is the synthetic air which is a mixture of oxygen and nitrogen. Although the synthetic air is always dry and clean, the former contains dust, bacteria, and moisture. There is a possibility that all of these particles cannot be excluded before use. Accordingly, we must check the air compressor system routinely when a source of the compressed air is used.
我们描述了在空气/氧气-七氟醚麻醉期间气流意外减少的经历。由于空气压缩机系统故障，压缩空气脱水不充分，潮湿的空气被输送到麻醉机。水分在流量控制阀处形成，导致气流逐渐减少。当时低压警报未起作用，因为供气压力正常。医用空气有两种，一种是由空气压缩机系统从环境空气中产生的，另一种是氧气和氮气混合而成的合成空气。虽然合成空气总是干燥清洁的，但前者含有灰尘、细菌和水分。有可能在使用前无法排除所有这些颗粒。因此，当使用压缩空气源时，我们必须定期检查空气压缩机系统。
