Related Experiment Video
Updated: Feb 1, 2026

Postconditioning with Lactate-enriched Blood for Cardioprotection in ST-segment Elevation Myocardial Infarction
Published on: May 28, 2019
Lambda-like ST-segment elevation in acute myocardial infarction triggered by coronary spasm may be a new risk
Guangqiang Wang1, Na Zhao2, Chuanhuan Zhang1
1Department of Cardiology.
Rationale:
The lambda-like ST-elevation electrocardiography (ECG) pattern is extremely rare in patients with type 2 myocardial infarction (T2MI) triggered by coronary spasm. When this ECG pattern appears, sudden cardiac death (SCD) caused by lethal ventricular arrhythmia may occur because clinicians do not pay sufficient attention to this phenomenon.
Patient Concerns:
We describe a 41-year-old man who presented with steep down-sloping ST-segment elevation, paroxysmal ventricular tachycardia, severe sinus bradycardia, and intermittent complete atrioventricular block on ECG during the sudden recurrence of clinical symptoms.
Diagnosis:
T2MI complicated with lethal arrhythmia and caused by coronary spasm.
Interventions:
The patient received an implantable cardioverter defibrillator (ICD) for SCD caused by lethal ventricular arrhythmia and received long-term calcium-blocker and nitroglycerin therapy.
Outcomes:
At a 3-month follow-up, no recurrence was noted.
Lessons:
The lambda-like ST-elevation pattern is identified with other ST-elevation patterns by geometry and may be a new risk predictor for lethal ventricular arrhythmia on ECG. When this pattern is identified, clinicians should adopt aggressive therapeutic strategies, including ICD implantation and etiological treatment.
More Related Videos
18:11A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
Published on: December 28, 2012
14:19Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction
Published on: October 14, 2016
Related Concept Videos
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Acute Coronary Syndrome I: Introduction
Acute Coronary Syndrome V: Nursing Management
Vascular Spasm
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
Acute Coronary Syndrome III: Diagnostic Studies