As an expert in emergency medical response, I can provide you with a comprehensive understanding of what happens when someone passes out, also known as losing consciousness or fainting. Fainting is a temporary loss of consciousness due to a drop in blood flow to the brain. It's a common occurrence and can be caused by various factors, including dehydration, standing up too quickly, emotional stress, or an underlying medical condition. When someone passes out, the duration for which they are unconscious can vary greatly. It can last from a few seconds to several minutes. The body's response to the lack of oxygen triggers a reflex that usually leads to regaining consciousness relatively quickly. However, if the person does not regain consciousness within one or two minutes, it is essential to take immediate action. Step 1: Assess the Situation The first step is to ensure the person's safety. Check for responsiveness by gently shaking their shoulder and calling their name. If they do not respond, they are unconscious. Step 2: Call for Help If the person is unresponsive, immediately call your local emergency number. In the UK, this would be 999, and you would ask for an ambulance. Step 3: Place in Recovery Position While waiting for medical help, place the person in the recovery position. This involves laying them on their side with their top leg bent at the knee and their bottom arm extended to support the head. Step 4: Monitor Vital Signs Keep an eye on the person's breathing and pulse. If they stop breathing or have no pulse, begin CPR if you are trained to do so. Step 5: Stay with the Person Stay with the person until medical help arrives. Do not leave them unattended. **Step 6: Provide Information to Medical Professionals** When the paramedics arrive, provide them with as much information as possible about what happened before the person passed out, any known medical conditions, and any medications they may be taking. It's important to note that passing out can be a symptom of a more serious condition. Even if the person recovers quickly, it's advisable to seek medical attention to rule out any underlying issues. Now, let's proceed with the translation into Chinese. read more >>

If a person faints and doesn't regain consciousness within one or two minutes, put them into the recovery position. You should then dial 999, ask for an ambulance and stay with the person until medical help arrives.read more >>