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Ventricular fibrillation, a type of arrhythmia, causes most sudden cardiac arrests. Other problems with the heart's electrical system, including diseases or conditions that can cause the electrical problems—such as coronary heart disease, physical stress, certain inherited disorders, and structural changes in the heart—also can lead to sudden cardiac arrest.

El tratamiento para la anemia por deficiencia de hierro dependerá de las causas y la gravedad. Los tratamientos pueden incluir suplementos de hierro, transfusiones de glóbulos rojos, cambios en su patrón de alimentación o procedimientos como la endoscopia para detener el sangrado.

Los signos y síntomas frecuentes de la apnea del sueño son los ronquidos o los jadeos durante el sueño, la respiración reducida o ausente (denominada "episodio de apnea") y la somnolencia. La apnea del sueño sin diagnosticar o tratar impide el sueño reparador y puede causar complicaciones que afecten muchas partes del cuerpo.

The body’s muscles and nervous system help control your breathing. The lungs are like sponges; they cannot move on their own. Muscles in your chest and abdomen contract, or tighten, to create space in your lungs for air to flow in. The muscles then relax, causing the space in the chest to get smaller and squeeze the air back out. Your breathing usually does not require any thought, because it is controlled by the autonomic nervous system, also called the involuntary nervous system.

Breathing involves two phases: breathing in and breathing out. Your lungs deliver oxygen and remove carbon dioxide from your blood in a process called gas exchange. Gas exchange happens in the capillaries surrounding the alveoli, where the oxygen that is breathed in enters the circulatory system and carbon dioxide in the blood is released to the lungs and then breathed out. If you have problems breathing, gas exchange may be impaired, increasing the risk of serious health problems.

Los signos, síntomas y complicaciones pueden variar según el tipo de trastorno hemorrágico, su causa y si el trastorno es leve o más grave. Los signos y síntomas pueden ser obvios poco después del nacimiento de un niño o pueden no aparecer hasta la edad adulta. Las personas que tienen un trastorno hemorrágico leve pueden no tener ningún signo o síntoma hasta que se lesionen o tengan un procedimiento médico.

Las personas que tienen la anemia de células falciformes tienen hemoglobina anormal, llamada hemoglobina S o hemoglobina falciforme, en sus glóbulos rojos. La hemoglobina es una proteína en los glóbulos rojos que transporta el oxígeno por todo el cuerpo. Las personas que tienen la anemia de células falciformes heredan dos genes de hemoglobina anormales, uno de cada padre.

Your genes, or other causes such as medical conditions or medicines, can cause bleeding disorders. Sometimes a cause may not be known. Any problem that affects the function or number of clotting factors or platelets can lead to a bleeding disorder.

Marfan syndrome is a genetic condition caused by a mutation, or change, in one of your genes, called the fibrillin-1 (FBN1) gene. The FBN1 gene makes fibrillin-1, which is a protein that forms elastic fibers within connective tissue. Fibrillin-1 also affects levels of another protein that helps control how you grow.

Treatments for peripheral artery disease include lifestyle changes, anti-clotting medicines, statins to control cholesterol, and medicines to treat high blood pressure. When peripheral artery disease is advanced or does not respond to lifestyle changes and medicines, your doctor may recommend surgery or procedures such as bypass grafting, angioplasty and stent placement, and atherectomy.