Gorman E S, Shnider M R
Department of Anesthesia, Harvard Medical School, Boston, MA.
Br J Anaesth. 1988 Mar;60(4):439-44. doi: 10.1093/bja/60.4.439.
The effect of the i.v. administration of methylene blue dye on haemoglobin oxygen saturation, measured by a pulse oximeter was investigated. The absorption spectra of various concentrations of haemoglobin, oxyhaemoglobin and methylene blue were compared. The amount of 660-nm light absorbed by methylene blue was sufficient to cause a factitious haemoglobin desaturation as measured by the pulse oximeter.
研究了静脉注射亚甲蓝染料对通过脉搏血氧仪测量的血红蛋白氧饱和度的影响。比较了不同浓度的血红蛋白、氧合血红蛋白和亚甲蓝的吸收光谱。亚甲蓝吸收的660纳米光的量足以导致脉搏血氧仪测量的假性血红蛋白去饱和。
