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Cardiac arrest

Preparation
Immediate management
Investigations
Prevention
Prognosis
Prognosis

The risk of cardiac arrest is increased with  a prolonged QTc interval b  

Why?

A prolonged QTc increases the risk of cardiac arrest

Patient Prognostic Factor Outcome CER OR
(95% CI)		 NNF+
(95% CI)
undergoing ECG b prolonged QTc interval (> 440 msec)
independent		 sudden death due to cardiac arrest
 		 3.7% 2.1
(1.4 to 3.1)		 17
(9 to 47)

Expiry date: July 2003
Levels of Evidence used in grading these guides

Author   CM   Ball
Reviewer   S   Straus
CAT Writers   CM   Ball , CJ   Wotton