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Acute Myocardial Infarction in Rats
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Isolated right ventricle infarction.

Jia Wei Woo1, William Kong1, Anand Ambhore1

  • 1Department of Cardiology, National University Heart Centre Singapore, National University Health System, Singapore.

Singapore Medical Journal
|April 19, 2019
PubMed
Summary
This summary is machine-generated.

Two patients with out-of-hospital cardiac arrest were revived after experiencing ST elevations on ECGs. Treatment involved percutaneous coronary intervention, leading to good recovery.

Keywords:
ECGRV branch occlusionisolated right ventricular infarctionout-of-hospital cardiac arrest

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Area of Science:

  • Cardiology
  • Emergency Medicine

Background:

  • Out-of-hospital cardiac arrest (OHCA) presents a critical medical emergency.
  • ECG findings of ST elevation in V1 and aVR, with ST elevation in V1 greater than aVR, can indicate specific coronary artery pathologies.

Observation:

  • Two patients presenting with OHCA showed characteristic ECG changes: ST elevations in leads V1 and aVR, and diffuse ST depression.
  • The ST elevation in V1 was more pronounced than in aVR in both cases.

Findings:

  • One patient had an occluded right ventricular (RV) branch of the right coronary artery.
  • The second patient had an occlusion in a proximal non-dominant right coronary artery supplying the RV branch.
  • Both patients underwent successful primary percutaneous coronary intervention (PCI) with angioplasty and drug-eluting stent implantation.

Implications:

  • Prompt recognition of specific ECG patterns in OHCA can guide emergent treatment strategies.
  • Successful PCI for RV branch occlusions can lead to favorable neurological and physical recovery in OHCA survivors.
  • This case series highlights the importance of timely intervention for specific coronary artery occlusions presenting with distinct ECG findings.