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Abstract Objective To evaluate predictive value of deceleration capacity of heart rate(DC) in high- risk patients af-ter acute myocardial infarction (AMI). Methods Ninety- six patients with AMI (AMI group) and ninety healthy subjects (control group) were enrol ed in the study and underwent examination of 24 hours Holter monitoring and echocardiogra-phy. DC, heart rate turbulence (HRT), heart rate variability(HRV), left ventricular end- diastolic diameter (LVEDD) and left ventricular ejection fraction (LVEF) were measured and calculated. AMI patients were divided into high- risk group and low- risk group. Results DC was significantly lower in patients with AMI than in control group (P<0.05) and in high- risk patients than in low- risk patients (P<0.05). The survival analysis revealed that DC was the strongest predictor for end point. Conclusion DC is benefit for evaluating autonomic nervous function and sudden death risk in AMI patients.
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