Canadian Medical Guide > Diseases > Cardiovascular Diseases > Heart Diseases > Arrhythmia > Pre-Excitation Syndromes Terms and Definitions

Pre-Excitation Syndromes

Medical Definition:	Conditions characterized by activation of the whole or some part of the ventricle by the atrial impulse earlier than would be expected if the impulse reached the ventricle by way of the normal specific conduction system only.
Guide Notes:	GEN: prefer specifics; long QT = LONG QT SYNDROME; normal PR-long QRS = PRE-EXCITATION, MAHAIM TYPE; short PR-normal QRS = LOWN-GANONG-LEVINE SYNDROME; short PR, long QRS = WOLFF-PARKINSON-WHITE SYNDROME
Previously Indexed:	Arrhythmia (1966-1985),Heart Conduction System (1966-1985),Tachycardia (1966-1985)

Pre-Excitation Syndromes Categories.

	Lown-Ganong-Levine Syndrome - A form of pre-excitation characterized by a short PR interval associated with a normal QRS complex.
	Pre-Excitation, Mahaim-Type - A form of pre-excitation characterized by a normal PR interval and a long QRS interval with a delta wave.
	Wolff-Parkinson-White Syndrome - A form of pre-excitation characterized by a short PR interval and a long QRS interval with a delta wave.

Pre-Excitation Syndromes Medical Definitions and Terms

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