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

Nausea and vomiting are primary symptoms of carbon monoxide poisoning because carbon monoxide (CO) interferes with the body's ability to transport oxygen, leading to various physiological responses. When CO enters the bloodstream, it binds to hemoglobin, forming carboxyhemoglobin, which cannot effectively carry oxygen. This lack of oxygen can result in symptoms such as headaches, dizziness, weakness, and gastrointestinal issues, including nausea and vomiting. These symptoms tend to arise because carbon monoxide affects multiple systems in the body, creating a feeling of malaise and distress that can manifest in gastrointestinal upset.

Understanding the symptoms associated with carbon monoxide poisoning is critical for early recognition and intervention. While blurred vision, shortness of breath under exertion, and a rapid heartbeat can occur in various health conditions or emergencies, they are not specific indicators of carbon monoxide exposure as nausea and vomiting are. Recognizing nausea and vomiting as a symptom can help individuals and responders identify a potential carbon monoxide poisoning situation more swiftly, allowing for timely treatment and evacuation from the hazardous environment.