In the cold weather in winter, carbon monoxide poisoning accidents in air-conditioned cars may occur, which is a unique "car accident" that car owners must be vigilant against.

In the morning, the dispatching and command center of the Beijing Emergency Center received a call from a man due to dizziness and nausea caused by the heavy smell of gasoline in the car. The dispatcher quickly collected information such as the address. Based on the previous work experience, the patient was likely to have carbon monoxide poisoning (commonly known as gas poisoning). An ambulance was sent immediately. After its arrival and the examination by the doctor, combined with the on-site injury mechanism, he was diagnosed as carbon monoxide poisoning, and the patient was sent to the hospital for further treatment.

As a colorless and odorless toxic gas, carbon monoxide is difficult to detect when people are poisoned. In recent years, with the increasing quantity of family cars, more and more carbon monoxide poisoning incidents in cars have occurred. When the engine is idling, exhaust gases containing large amounts of carbon monoxide are produced due to insufficient combustion of gasoline. Since the binding force of carbon monoxide to hemoglobin is much higher than that of oxygen and hemoglobin, after carbon monoxide enters the human body, the vast majority of hemoglobin will "preferentially" bind to it, and most of the oxygen is "discarded", resulting in severe hypoxia in human body.

In order to prevent accidents of carbon monoxide poisoning in air-conditioned cars, Beijing 120 reminds "car owners" to pay attention to the following contents.

1. Do not turn on the air conditioner for too long when the car is stopped. Even when driving, the windows should be properly opened to allow convection of air inside and outside the car to maintain air circulation.

2. Never nap or sleep with the air conditioner on in a stopped car to avoid unknowingly occurring carbon monoxide poisoning.

3. If you feel dizzy or weak limbs when driving or taking an air-conditioned car, you should open the window in time to breathe fresh air, and consider whether carbon monoxide poisoning is on the premise of excluding motion sickness and other causes. It is necessary to stop, get out of the car and rest for a while, and wait for the discomfort to disappear before driving.

4. If someone is found to be poisoned with carbon monoxide in the car, emergency rescue should be provided. It is necessary to stop the car quickly, open all windows and doors, and transfer the poisoned person to a ventilated and warm place. The patient should lie flat, untie the collar and belt to make the breathing smooth. The people around should call the emergency number in time for professional help.