The blood gas parameters: pH 7.58, pCo2 23 mm Hg pO2 300 mm Hg and oxygen saturation 60% are most consistent with-
Answer is B (Ventilatory malfunction) Ventilatory malfunction is the single best answer of exclusion This is consistent with a diagnosis of ventilatory mal function. None of the other three condition satisfy the given parameters of the patients. The answer of exclusion therefore is some form of ventilatory malfunction. In carbon monoxide poisoning ABG analysis would reveal acidosis and nollnal PO2 In voluntary hyperventilation oxygen saturation would be normal. In methyl alcohol poisoning ABG would reveal acidosis and not alkalosis.
Carbon monoxide poisoning
Ventilatory malfunction
Voluntary hyperventilation
Methyl alcohol poisoning