Heart Index – D

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

An electrical device used to restore normal heart contraction rhythms. This is done by delivering a carefully regulated electrical current to the heart when it suddenly stops beating effectively.

Diabetes

An endocrinological disorder which results in the body being unable to metabolise glucose due to insulin deficiency.

Diastole

The period of relaxation and dilation of the chambers of the heart in between contractions of heart muscle.

Diastolic blood pressure

The lower of the two readings recorded when measuring blood pressure. It reflects the pressure exerted by blood when the heart relaxes and opens its chambers in between beats.

Diuretics

Substances which increase the output of water and salt in the urine; also referred to as “water tablets”.