Heart Index – P

A B C D E F H I L M N O P R S T V
Pacemaker

An electrical appliance used to stimulate contractions of the heart.

Percutaneous transluminal coronary angioplasty (PTCA)

Another term for coronary or “balloon” angioplasty.

Pericardium

A membranous sac which encloses the heart.

Platelets

Minute particles present in the blood of vertebrates and involved in the clotting of blood.

Polyunsaturated fat

A type of animal and vegetable fat, the molecules of which consist of long carbon chains with several (“poly-“) double bonds. It is less likely to be converted into cholesterol in the body. It may be found in either a liquid or soft solid form at room temperature.

Progestin

Any of a group of steroid hormones with progesterone-like activity in terms of preparing and maintaining the uterus in females for pregnancy.

Pulmonary arteries

The arteries which carry deoxygenated blood from the right side of the heart to the lungs for oxygenation.

Pulmonary stenosis

Abnormal narrowing of the pulmonary valve. It may arise as a congenital heart defect.

Pulmonary valve

The valve between the pulmonary artery and the right ventricle.

Pulmonary veins

The veins which carry oxygen-rich blood from the lungs back to the left side of the heart.