Breathing and Exchange of GasesMedium

Question

Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct ?

Options

A.The patient been inhaling polluted air containing unusually high content of carbon disulphide
B.The patient been inhaling polluted air containing unusually high content of carbon chloroform
C.The patient has been inhaling polluted air containing unusually high content of carbon dioxide
D.The patient has been inhaling polluted air containing unusually high content of carbon monoxide

Solution

carbon monoxide forms a stadle compound with haemoglobin called carboxyhaemoglobin as affinity of Hb for CO is 210 times greater than its affinity for O2. In this form haemoglobin does not carry oxygen resulting in death too.
      Hb     +     CO     ⇋     Hb     CO
     Haemoglobin            Carboxyhaemoglobin

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