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Prevalence Clinical features Differential diagnosis Investigations Therapy Prevention Prognosis

Prognosis In addition look for abnormal heart rate recovery (< 12-18 beats/min fall after 1 minute of recovery) a resting tachycardia a Patient Prognostic factor Outcome CER RR  (95% CI) NNT (95% CI) referred for exercise ECG a abnormal heart rate recovery independent Death  at 5 years 3.3% 2.13 (1.63 to 2.78) 44 (28 to 79)   resting tachycardia  independent Death  at 5 years 3.3% 2.39 (1.66 to 3.45) 24 (14 to 51)

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