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Ventilators are machines that blow air—or air with extra oxygen—into your airways and your lungs. Your airways are pipes that carry oxygen-rich air to your lungs when you breathe in. They also carry carbon dioxide (a waste gas) out of your lungs when you breathe out.

You may need a ventilator in an emergency if a condition makes it difficult to breathe on your own (called respiratory failure). You may also need a ventilator during surgery.

Most people who have asthma are treated with daily medicine, called long-term control medicines, along with inhalers containing medicine for short-term relief during an asthma attack or when symptoms worsen.

Los signos y síntomas varían según el tipo de angina y el sexo (hombre o mujer). Los síntomas de la angina pueden diferir en la gravedad, la ubicación en el cuerpo, la duración y en qué tanto alivio siente al descansar o tomar medicamentos. Ya que los síntomas de la angina y de un ataque al corazón pueden ser los mismos, llame al 9-1-1 si siente molestias en el pecho que no desaparezcan con reposo o medicamentos.

BPD is a type of neonatal respiratory disease that develops as a result of a newborn's lungs not developing normally while the baby is growing in the womb or not developing fully if the baby was born premature. These babies’ lungs are fragile and can be easily irritated or inflamed after birth. Ventilation, high levels of oxygen, or infections can also damage premature newborns' lungs.

Your doctor may diagnose angina based on your medical history, a physical exam, and diagnostic tests and procedures. These tests can help assess whether you need immediate treatment for a heart attack. Some of these tests may help rule out other conditions.

La sarcoidosis es una afección por la que ciertas células inmunitarias forman bultos, llamados granulomas, en los órganos. Se cree que la inflamación causa la formación de granulomas y, además, puede provocar cicatrices temporales o permanentes en la zona de los granulomas.

Metabolic syndrome is the name for a group of risk factors that raises your risk for heart disease and other health problems, such as diabetes and stroke. The term "metabolic" refers to the biochemical processes involved in the body's normal functioning.

The main symptom of insomnia is trouble falling or staying asleep, even if you have enough time and the right conditions for good sleep. Over time, untreated insomnia may raise your risk of certain health problems or workplace or road accidents.

To diagnose a circadian rhythm disorder, your doctor may review your medical history; ask about your symptoms, sleep patterns, and environment; do a physical exam; and order diagnostic tests.