Which of the following is a symptom of carbon monoxide poisoning?

Drowsiness and nausea are indeed symptoms of carbon monoxide poisoning. This form of poisoning occurs when carbon monoxide gas is inhaled, often from faulty engines or inadequate ventilation on boats. The gas binds to hemoglobin in the blood more effectively than oxygen, leading to a reduction in oxygen delivery to vital organs.

The presence of drowsiness is particularly alarming, as it indicates a significant impact on the central nervous system and can often precede more severe symptoms. Nausea is also common and can result from the body’s response to the lack of oxygen or from direct irritation caused by the gas in the respiratory system.

Recognizing these symptoms is crucial for immediate action, as carbon monoxide poisoning can escalate quickly and become life-threatening. Understanding these signs helps boaters ensure safety for themselves and their passengers while on the water.