In-depth

Causes

Heart arrhythmias

A heart arrhythmia is an abnormal heart rhythm. Arrhythmias can be a byproduct of damage to the heart from disease or age.

Complications

Sudden cardiac arrest

Sudden cardiac arrest is a medical emergency. Rapid treatment improves your chances of survival.

Risk factors

Cardiomyopathy

Cardiomyopathy is a heart muscle disease. Treatment options depend on what type of cardiomyopathy you have.

Symptoms

Abdominal pain

Find out what causes different types of abdominal pain.

Enlarged spleen

An enlarged spleen is usually a sign of an underlying problem. Treatment varies, depending on what's causing the enlargement.

Fatigue

Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Nausea and vomiting

Sick to your stomach? Nausea and vomiting usually pass quickly but sometimes result from long-term or serious conditions.

Tests and diagnosis

Electrocardiogram

An electrocardiogram (ECG or EKG) is a test that provides valuable clues about your heart health. Here's what you need to know about the test.

Upper endoscopy

Find out what to expect during your endoscopy exam.

X-ray

X-rays are a form of radiation that can make images of your bones and internal organs.

Treatments and drugs

Heart transplant

A heart transplant can help both adults and children with severe heart problems who don't benefit from other treatment options.

Pacemaker

A pacemaker can correct a heartbeat that's too slow. Find out the risks, results and recovery time of the procedure to implant a pacemaker.

Jun. 11, 2011