Which of the following are symptoms of carbon monoxide (CO) poisoning?

The symptoms of carbon monoxide (CO) poisoning can vary widely, but they often include a combination of physical signs that indicate the body is being deprived of oxygen. The choice identifying tightness in the chest, nausea, drowsiness, and headache encompasses several classic symptoms associated with CO exposure.

Tightness in the chest signals respiratory distress, as CO can interfere with the body’s ability to transport oxygen. Nausea and drowsiness are common responses as the body reacts to the toxic effects of carbon monoxide, which can lead to a lack of alertness. Headaches frequently occur because CO binds to hemoglobin in the blood more effectively than oxygen, reducing the amount of oxygen that can be delivered to the brain and other vital organs.

These symptoms can rapidly progress in severity and may indicate a serious or life-threatening situation requiring immediate attention. Recognizing this cluster of symptoms can be critical for timely intervention, such as moving the affected individual to fresh air and calling for emergency medical help.