Acute coronary syndrome occurs when there isn't enough blood flowing through your heart. It can be felt as chest pain (angina) or a heart attack.
Broken heart syndrome, also called stress cardiomyopathy, mimics a heart attack. Discover how stress could trigger this puzzling condition.
Coarctation of the aorta is a cardiovascular defect resulting in a narrowing of the aorta, the blood vessel that delivers oxygen-rich blood to your body.
Diabetic ketoacidosis is a serious diabetes complication. Learn the warning signs — and know when to seek emergency care.
Ebstein's anomaly is a rare heart defect. Some people may not have any symptoms, but others may need treatment, including surgery.
Eisenmenger syndrome, a complication of congenital heart defects, can be life-threatening if not properly treated. Find out more.
Enlarged heart is often a sign of a serious heart condition. Find out causes and treatments for enlarged heart.
Heart disease, usually thought of as blockages in the arteries that can cause a heart attack, can describe any medical condition affecting your heart.
Heart palpitations are skipped, fluttering or racing heartbeats that aren't usually a symptom of a serious heart problem. Discover the causes and symptoms of this condition.
Kawasaki disease — the leading cause of acquired coronary disease in children — causes artery wall inflammation throughout the body. It affects children younger than age 5.
Long QT syndrome is an electrical disturbance that can cause sudden, rapid heart rates. It can be genetic or a side effect of medication.
Low blood pressure (hypotension) can be a sign of good health or of a life-threatening condition. Find out more about hypotension's causes and treatment options.
Mitral valve prolapse occurs when the valve separating two of your heart's chambers malfunctions. The disorder usually isn't serious and often doesn't require surgical treatment.
Myocarditis is a disease in which the heart muscle becomes inflamed and swollen, often as the result of an infection.
Noonan syndrome is caused by a mutation in one of the genes responsible for normal development in many parts of the body, including the heart.
Orthostatic hypotension (postural hypotension) is a form of low blood pressure that occurs when you stand up.
Pericardial effusion, the accumulation of excess fluid in the sac-like structure around the heart, can decrease heart function and can be life-threatening.
Pulmonary atresia is a heart defect that you're born with. Fortunately, treatment soon after birth and ongoing throughout childhood and adulthood greatly improve your prognosis.
Rheumatic fever, an inflammatory disease triggered by untreated or poorly treated strep throat, can cause permanent heart damage.
Secondary hypertension is a type of high blood pressure that's caused by another medical condition. Prompt treatment is often necessary to avoid complications.
Sudden cardiac arrest is a medical emergency. Rapid treatment improves your chances of survival.
Tachycardia, a rapid heart rate, is caused by an abnormality in your heart's electrical impulses. Tachycardia can cause serious complications, including sudden cardiac arrest.
Tetralogy of Fallot, a cause of "blue baby" syndrome, is a congenital heart condition resulting in oxygen-poor blood leaving the heart and entering the body.
Vasovagal syncope (fainting) is a sudden and brief loss of consciousness that occurs when the blood flow to your brain is markedly reduced.
An abnormal electrical pathway in the heart causes the rapid heart rate of Wolff-Parkinson-White syndrome.
Oct. 24, 2012
- Electrocardiogram. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/ekg/. Accessed Aug. 20, 2012.
- Podrid PJ. Ambulatory monitoring in the assessment of cardiac arrhythmias. http://www.uptodate.com/index. Accessed Aug. 20, 2012.
- Stress testing. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/stress/. Accessed Aug. 20, 2012.