Ear tubes are plastic and shaped like a hollow spool. Doctors suggest tubes for children who have repeat ear infections or when fluid stays behind the eardrum. A specialist (otolaryngologist) places the tubes through a small surgical opening made...

Discusses causes and symptoms of aneurysms that form in an artery called the aorta. Links to pictures of abdominal aneurysm and thoracic aneurysm. Covers treatment with medicines or surgery. Also looks at lifestyle changes that may help.

What is a lateral collateral ligament (LCL) injury? An LCL injury is a sprain or tear to the lateral collateral ligament (LCL). The LCL is a band of tissue on the outside of your knee. It connects your thighbone to the bone of your lower leg and helps keep the knee from bending outward. You can hurt your LCL during...

What is placenta previa? Placenta previa is a pregnancy problem in which the placenta blocks the cervix. The placenta is a round, flat organ that forms on the inside wall of the uterus soon after conception. During pregnancy, it gives the baby food and oxygen. In a normal pregnancy, the placenta is attached high up in...

Anyone who has a head injury during a sporting event needs to immediately stop all activity and not return to play that day. Being active again before the brain returns to normal functioning increases the person's risk of having a more serious brain injury. Every person involved in a sporting event (every coach, player...

What is heart block? Heart block refers to an abnormality in the way electricity passes through the normal electrical pathways of the heart. The abnormality "blocks" the electrical impulse from continuing through the normal pathways and usually results in a slower heart rate. The electrical activity of the heart starts...

Discusses primary cause (blood clot in the lungs) and symptoms of pulmonary embolism. Looks at treatment with thrombolytic medicines, blood thinners (anticoagulants), or surgery. Links to info on complications like pulmonary hypertension.

Learn what blood clots are and how they can happen during and after pregnancy.

Pericardiocentesis is done to find the cause of fluid buildup around the heart and to relieve pressure on the heart. The tissue sac that surrounds the heart is called the pericardium. It protects the heart and parts of the major blood vessels connected to the heart. Normally, there is a small amount of fluid between...

Cardiac resynchronization therapy (CRT) uses a special type of pacemaker called a biventricular pacemaker (say "by-ven-TRICK-yuh-ler") to treat heart failure. This pacemaker sends electrical pulses to make the ventricles pump at the same time. A biventricular pacemaker is implanted in the chest, and it connects to three...