EKG and Heart Rhythm Disorders

These flashcards cover key terms and definitions related to EKG and various heart rhythm disorders.

Sinus Rhythm

The normal heartbeat rhythm of the heart, where each heartbeat is initiated by the sinoatrial node.

Atrial Flutter

A type of heart rhythm disorder where the atria beat rapidly and irregularly, characterized by 'flutter waves' with a possible 3:1 block.

Ectopic Atrial Flutter

An extra heartbeat occurring in the atria that leads to a rapid and irregular atrial rhythm.

J Wave

A wave seen on an EKG, most commonly associated with early repolarization, typically caused by hypercalcemia.

U Wave

The U wave appears after the T wave on an EKG and is usually caused by hypokalemia.

Atrial Fibrillation

A condition where the upper chambers of the heart (atria) beat irregularly and rapidly.

Heart Block

A condition in which the electrical signals in the heart are partially or totally blocked, categorized into 1st, 2nd, and 3rd degree heart blocks.

2nd Degree Heart Block

A type of heart block in which some electrical signals from the atria to the ventricles are blocked, leading to irregular heartbeats.