The upward deflection of a wave or complex.
The two upper chambers of the heart (left and right atrium).
Augmented limb leads:
aVR, aVL and aVF comprise the unipolar limb leads.
A rhythm speed of less than 60 beats per minute.
A box on the ECG tracing, 10mm high and 0.12 seconds in width, that is used to ensure that it conforms to a standardised measurement.
An anatomical term that describes the direction and distance from the midline. Distal is further from the midline than proximal.
The general direction the electrical impulses take through the heart.
Electrical conduction system:
A pathway of specialised cells that promote the conduction of impulses through the heart.
The adhesive sensors placed on the skin to record the electrical activity of the heart.
Lack of blood flow to an area of heart muscle.
The exact position on the body of the ECG electrodes.
I, II, III, aVR, aVL, aVF comprise the limb leads.
The medical term for a 'heart attack'. It occurs when the cardiac muscle is irreversibly damaged.
Normal sinus rhythm:
The hearts normal rhythm. The intervals are consistent and within the normal range.
Also known as the chest leads. They are labeled V1 - V6 or C1 - C6.
An anatomical term that describes the direction and distance from the mid-line. Proximal is nearer to the midline than distal.
The number of times the heart beats per minute.
A rhythm speed greater than 100 beats per minute.