Related Experiment Videos
Prognostic implications of ventricular arrhythmias registered before discharge and one year after acute myocardial
Insights
Severe ventricular ectopic beats (VEBs) after acute myocardial infarction (AMI) predict future cardiac events. Monitoring VEBs post-discharge and one year later is crucial for assessing long-term prognosis in AMI patients.
Area of Science:
- Cardiology
- Clinical Electrophysiology
Background:
- Ventricular ectopic beats (VEBs) are common after acute myocardial infarction (AMI).
- The prognostic significance of VEBs in the long term following AMI requires further elucidation.
Purpose of the Study:
- To evaluate the prognostic weight of VEBs in patients discharged after CCU-treated AMI.
- To assess the predictive value of VEBs at discharge and one year post-AMI for subsequent cardiac events.
Main Methods:
- 160 patients with AMI were monitored for two years.
- VEBs were recorded via 6-hour telemetry before discharge and at one year post-AMI.
- Data analyzed for correlation between VEB severity and outcomes like sudden death and reinfarction.
Main Results:
- Severe VEBs (multiform, paired, R-on-T, ventricular tachycardia) were more prevalent in patients experiencing sudden death or reinfarction within the first year.
- Severe VEBs at discharge predicted outcomes for the entire two-year follow-up, not just the second year.
- One year post-AMI, a significant shift towards severe VEBs was observed in survivors.
- Severe VEBs one year post-AMI predicted adverse events in the second follow-up year.
Conclusions:
- Severe VEBs detected prior to discharge and one year after AMI carry significant prognostic weight for adverse cardiac events.
- Continuous monitoring and assessment of VEB severity are vital for risk stratification in post-MI patients.
- Patients with persistent severe VEBs exhibit a particularly poor prognosis.
Abstract:
The prognostic weight of ventricular ectopic beats (VEBs) was evaluated in 160 patients discharged after a CCU-treated acute myocardial infarction (AMI) and followed for two years. VEBs were registered prior to discharge by 6 hours of telemetry (3 hours during daytime including exercise and 3 hours at night) and again one year after the AMI. During the first year of follow-up, 11 patients died suddenly and 20 suffered reinfarction. Sixteen (55%) of these had shown severe VEBs, i.e. multiform, paired, R-on-T, or ventricular tachycardia, as compared to 42 (29%) of the remainder. During the second year of follow-up, eight patients suffered reinfarction and five died suddenly. The occurrence of severe VEBs prior to discharge was not of prognostic value for the second year per se but continued to carry prognostic weight for the first plus the second year. One year after the AMI the VEB incidence in 122 survivors without reinfarction increased insignificantly from 71 to 78%. VEB severity increased in 43% and decreased in 27% and the shift towards severe forms is significant. Severe VEBs one year after the AMI carry a prognostic weight for the second follow-up year, as 18% of patients with severe VEBs reinfarcted or died suddenly against 5% of those with nor or uniform VEBs only. Patients who had severe VEBs both prior to discharge and one year later did especially badly.