Blood analysis of a patient reveals an unusually high quantity of carb...
Carboxyhaemoglobin is the stable product formed by the association of CO and Hb in the blood. The association of carbon dioxide and haemoglobin forms carbamino haemoglobin.
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Blood analysis of a patient reveals an unusually high quantity of carb...
Explanation:
Carboxyhaemoglobin is a complex of hemoglobin and carbon monoxide. When carbon monoxide (CO) is inhaled, it binds to hemoglobin in the blood instead of oxygen, forming carboxyhemoglobin. This reduces the amount of oxygen transported in the bloodstream, leading to hypoxia (lack of oxygen supply in body tissues).
Polluted air containing unusually high content of carbon monoxide is the most likely cause of the high quantity of carboxyhaemoglobin content in the patient's blood.
Option 'A': Carbon disulphide is a toxic industrial chemical that can cause neurological and respiratory problems, but does not bind to hemoglobin like carbon monoxide.
Option 'B': Chloroform is a volatile organic compound that can cause liver and kidney damage, but does not bind to hemoglobin like carbon monoxide.
Option 'C': Carbon dioxide is a normal byproduct of metabolism and is not toxic in small amounts. However, high levels of carbon dioxide in the blood can cause symptoms such as headache, dizziness, and shortness of breath.
Thus, the correct answer is option 'D': carbon monoxide.
Blood analysis of a patient reveals an unusually high quantity of carb...
----》》Carbon monoxide binds to hemoglobin approximately 200 times more tightly than oxygen. Normally, oxygen binds to hemoglobin in the lungs and gets released in areas with low oxygen partial pressure (e.g., active muscles). When carbon monoxide binds to hemoglobin, it cannot be released as easily as oxygen. The slow release rate of carbon monoxide causes an accumulation of CO bound hemoglobin molecules. Because of this, fewer hemoglobin particles are available to bind and deliver oxygen,
---))thus causing the gradual suffocation associated with carbon monoxide poisoning.