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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Utility of Zwolle Risk Score in Guiding Low-Risk STEMI Discharge.

Teik Wen Lim1, Tahiya Syeda Karim1, Melinda Fernando1

  • 1Department of Cardiology, Peninsula Health, Melbourne, Vic, Australia.

Heart, Lung & Circulation
|December 5, 2020
PubMed
Summary

Early discharge may be safe for low-risk ST-segment elevation myocardial infarction (STEMI) patients after successful primary percutaneous coronary intervention (PPCI), as indicated by low 30-day adverse events. Further research is needed to confirm safety and assess broader impacts.

Keywords:
Length of stayMajor adverse cardiovascular eventsSTEMIZwolle risk score

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Health Outcomes Research

Background:

  • ST-segment elevation myocardial infarction (STEMI) patients typically have prolonged hospital stays for complication monitoring.
  • Emerging evidence suggests selected STEMI patients treated with primary percutaneous coronary intervention (PPCI) may be candidates for early discharge.

Purpose of the Study:

  • To assess the feasibility of identifying low-risk STEMI patients for early discharge using the Zwolle Risk Score (ZRS).
  • To evaluate the safety and outcomes of early discharge in low-risk STEMI patients.

Main Methods:

  • Retrospective evaluation of consecutive STEMI patients undergoing successful PPCI (Jan 2016 - Dec 2017).
  • Patients classified as low-risk if Zwolle Risk Score (ZRS) ≤3.
  • Recorded demographic, angiographic data, length of stay (LOS), and 30-day major adverse cardiovascular events (MACE).

Main Results:

  • 183 STEMI patients analyzed; 72.1% classified as low-risk (ZRS≤3).
  • Low-risk patients had significantly shorter LOS (86.3 vs. 93.2 hours) and lower 30-day MACE (4.5% vs. 25.5%) and mortality (0% vs. 11.8%) compared to high-risk patients.
  • None of the 35 low-risk patients discharged within 72 hours experienced 30-day MACE.

Conclusions:

  • The Zwolle Risk Score effectively identifies low-risk STEMI patients suitable for early discharge post-PPCI.
  • Early discharge appears safe for selected low-risk STEMI patients, with low rates of MACE and mortality.
  • Larger studies are recommended to confirm safety and explore economic/psychological impacts of ZRS-guided early discharge.