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Thoracentesis is a procedure in which a needle is inserted into the pleural space between the lungs and the chest wall.

Sleep studies are painless, noninvasive tests that measure how well you sleep and how your body responds to sleep problems. The more common sleep studies monitor and record data about your body during a full night of sleep.

Percutaneous coronary intervention (PCI), also known as coronary angioplasty, is a nonsurgical procedure that improves blood flow to your heart.

A lung VQ scan is an imaging test that uses a ventilation (V) scan to measure air flow in your lungs and a perfusion (Q) scan to see where blood flows in your lungs. It uses special x ray scanners outside of your body to create pictures of air and blood flow patterns in your lungs.

Holter and event monitors are small, portable electrocardiogram devices that record your heart’s electrical activity for long periods of time while you do your normal activities. These monitors can record how fast your heart is beating, whether the rhythm of your heartbeats is steady or irregular, and the strength and timing of the electrical impulses passing through each part of your heart.

Heart transplant is surgery that removes a diseased heart and replaces it with a healthy heart from a deceased donor to improve your quality of life and increase your lifespan. Most heart transplants are done on patients who have end-stage heart failure, a condition in which your heart is severely damaged or weakened, and on people who have failed other treatment options.

A heart murmur is an unusual sound heard between heartbeats. Murmurs sometimes sound like a whooshing or swishing noise. Murmurs may be harmless, also called innocent, or abnormal.