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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.

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.

Cuando duerme, pasa por dos fases del sueño: el movimiento ocular rápido (MOR) y el sueño de no movimiento ocular rápido (NMOR). El ciclo comienza cada 80 o hasta 100 minutos. Por lo general, hay de cuatro a seis ciclos por noche. Puede despertarse brevemente entre ciclos. Los estudios del sueño utilizan sensores para registrar los movimientos oculares y la actividad cerebral, que se utilizan para clasificar las fases y etapas del sueño.

El primer paso hacia la salud del corazón es comprender su riesgo de enfermedad cardíaca. Su riesgo depende de muchos factores: algunos de ellos pueden cambiarse y otros, no. Los factores de riesgo son condiciones o hábitos que hacen que una persona sea más propensa a desarrollar una enfermedad. Estos factores de riesgo pueden ser diferentes para cada persona.

Existen tres tipos principales de enfermedad coronaria: enfermedad arterial coronaria obstructiva, enfermedad coronaria no obstructiva y enfermedad coronaria microvascular. La enfermedad de la arteria coronaria afecta a las arterias grandes en la superficie del corazón. Muchas personas tienen ambos tipos de enfermedad; la obstructiva y la no obstructiva. La enfermedad coronaria microvascular afecta a las pequeñas arterias del músculo cardíaco.

Treatments for varicose veins in the legs include lifestyle changes, medical procedures to remove or close them, compression therapy, and medicines. Depending on your symptoms, your doctor may recommend a combination of treatments or no treatment at all. There is a chance that new varicose veins may form even after treatment, or you may need to be treated more than once.

There are many types of conduction disorders that can occur anywhere along the cardiac conduction system: at the sinoatrial (SA) node, the atrioventricular (AV) node, or the bundle branches. The problem can be with signal generation, how the signal travels through the heart, or both. Disorders can occur on a much smaller level within ion channels in a heart muscle cell that work together to make the heart cell contract.

People who have certain conditions may benefit from CABG, such as those who have obstructive coronary artery disease, a type of ischemic heart disease. Obstructive coronary artery disease occurs when plaque builds up in the coronary arteries that supply the heart with oxygen-rich blood.

After CABG surgery, you will need time to recover. There are also potential complications from surgery, including arrhythmia, heart attack, and infection.

There are many different types of vasculitis that affect different blood vessels throughout the body.