Concentration of methemoglobin to cause cyanosis-
Ans. (c) 1.5gm/dl(Ref: Ganong, 25th ed/p.647)The level of methemoglobin producing cyanosis is 1.5gm/dlIf deoxyhemoglobin (reduced Hb) is 5.0g/dL or greater, cyanosis appears
5 gm/dl
2 gm/dl
1.5 gm/dl
12 gm/dl
Respiratory System