呼叫救护车，获取紧急救援服务。 辅助呼吸。 避免因焦虑产生的换气过度。

Given the above summary, write a detailed text in English for it.
If you or someone you are with is having trouble breathing, then call emergency services right away. Breathing too fast or too slow can be signs of a medical problem including:  Asthma Anxiety Pneumonia Heart failure A drug overdose Fever If someone needs help breathing, there are several ways that a doctor can administer oxygen. This includes:  An oxygen mask. This is a mask that fits over the person's face and delivers a higher concentration of oxygen than is present in the atmosphere. In the environment, the air is 21% oxygen. But if someone is having trouble breathing, they may need a higher concentration. CPAP or continuous positive airway pressure. Tubes are put into the person's nose and oxygen flows in under a small amount of air pressure. The pressure helps the airways and the lungs stay open. Ventilation. This involves putting a breathing tube down through the person's mouth and into the windpipe. Oxygen can then be administered directly into the lungs. Some people breathe very quickly, called hyperventilation, when they are anxious or panicking. This can lead to the feeling of not being able to catch your breath even though you are getting too much oxygen while breathing too fast. If someone you are with experiences this you can:  Reassure the person and help her relax. Tell her that she is not having a heart attack and is not going to die. Assure her that she is doing ok. Have the person adopt breathing techniques that will reduce the amount of oxygen she gets. She can: breathe into a paper bag, purse her lips, or cover one nostril and her mouth while breathing. As the balance of carbon dioxide and oxygen in her system returns to normal, she should feel better. You can also help the person to relax by advising them to concentrate on a single object on the horizon, such as a tree or building. Or, you can also tell them to close their eyes to ease the sense of panic the person might feel. Encourage the person to see a doctor.