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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.

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.

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.

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.

Alpha-1 antitrypsin (AAT) deficiency happens when you do not make enough AAT protein. The AAT protein is made in your liver. This protein enters your blood and protects your organs, including the lungs, from damage. For example, your immune system is your body’s defense against bacteria and viruses but if it is overactive, it can damage your body while fighting diseases. The AAT protein prevents you from having too much inflammation in your lungs. Without enough AAT protein, your immune system may damage your lungs and lead to lung disease.

In all types of sickle cell disease, at least one of the two abnormal genes causes a person’s body to make hemoglobin S. When a person has two hemoglobin S genes (hemoglobin SS), the disease is called sickle cell anemia. This is the most common and often most severe type of sickle cell disease. Hemoglobin SC disease and hemoglobin S? thalassemia are two other common types of sickle cell disease. Hemoglobin SD and hemoglobin SE are much less common.

For most people with high blood pressure, a doctor will develop a treatment plan that may include heart-healthy lifestyle changes alone or with medicines. Heart-healthy lifestyle changes, such as heart-healthy eating, can be highly effective in treating high blood pressure.

The most common cause of high blood cholesterol is an unhealthy lifestyle. However, the genes that you inherit from your parents, other medical conditions, and some medicines may also cause high blood cholesterol.

Peripheral artery disease is more common in blacks than any other racial or ethnic group. The major risk factors for peripheral artery disease include smoking, older age, and diseases and conditions such as diabetes, high blood pressure, high blood cholesterol, coronary heart disease, stroke, and metabolic syndrome.

Sickle cell disease is an inherited disease caused by defects, called mutations, in the beta globin gene that helps make hemoglobin.