Related Experiment Videos
Dynamic intraventricular obstruction in acute myocardial infarction
D San Román Sanchez1, O Medina, F Jimenez
1Servicio de Cardiología, Hospital Universitario Insular de Gran Canaria, Carretera del Centro 222, 35017 Las Palmas Gran Canaria, Spain.
Echocardiography (Mount Kisco, N.Y.)
|September 25, 2001
Summary
Transient left ventricular dynamic obstruction (TLVO) is a rare complication of acute myocardial infarction (AMI). Understanding its mechanism involving basal segment hypercontractility and mitral valve systolic anterior movement aids in patient management.
Area of Science:
- Cardiology
- Cardiovascular Medicine
- Clinical Echocardiography
Background:
- Transient left ventricular dynamic obstruction (TLVO) is an infrequent complication of acute myocardial infarction (AMI).
- TLVO presents with a new systolic murmur and hemodynamic worsening, necessitating diagnostic echocardiography.
Observation:
- Two cases of TLVO following AMI are presented, both with favorable outcomes.
- Serial echocardiograms revealed enhanced contractility in basal left ventricular segments.
Findings:
- This basal segment hypercontractility caused obstruction of cardiac ejection via mitral valve systolic anterior movement into the left ventricular outflow tract.
- An intraventricular gradient persisted for several days in both patients before resolving.
Implications:
- Understanding the mechanism of TLVO is crucial for effective clinical management.
- This case series highlights the importance of echocardiography in diagnosing and monitoring TLVO in AMI patients.