A motorcyclist after road traffic accident is having raised aerial pCO2 on ABG. Probable cause can be:
(A) Damage to respiratory apparatus (B) Damage to respiratory centre (C) Damage to both respiratory apparatus and respiratory centre (D) Massive lung contusion alone
(C) Answer- C. Damage to both respiratory apparatus and respiratory centre'Depression of the respiratory center by a variety of drugs, injury, or disease can produce respiratory acidosis.This may occur acutely with general anesthetics, sedatives, and head trauma or chronically with sedatives, alcohol, intracranial tumors, and the syndromes of sleep-disordered breathing including the primary alveolar and obesity-hypoventilation syndromes.'- Harrison I8/e p371