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Octopus papillary muscle associated with a left lateral accessory pathway
Manisha S Patel1, Chris Jones, David Huneycutt
1Adult Congenital Heart Disease Center, Emory University, Atlanta, GA 30322, USA. patelm@kidsheart.com
Congenital Heart Disease
|November 21, 2009
Summary
Rare left ventricular papillary muscle abnormalities can cause heart rhythm problems. This case highlights a unique "octopus-like" muscle linked to supraventricular tachycardia and an accessory pathway.
Area of Science:
- Cardiology
- Cardiac Electrophysiology
- Congenital Heart Malformations
Background:
- Left ventricular papillary muscle abnormalities are uncommon congenital defects.
- These anomalies are often associated with significant mitral valve dysfunction and left ventricular outflow obstruction.
Observation:
- A young adult presented with palpitations.
- Echocardiography revealed an unusual "octopus-like" left ventricular papillary muscle.
- Electrophysiologic testing was performed.
Findings:
- The patient exhibited supraventricular tachycardia.
- A left lateral accessory pathway was identified.
- The accessory pathway was associated with the abnormal papillary muscle attachments.
Implications:
- This case underscores the potential link between rare papillary muscle malformations and cardiac arrhythmias.
- Abnormal papillary muscle morphology may contribute to accessory pathway formation and supraventricular tachycardia.
- Further investigation into the electrophysiological consequences of papillary muscle anomalies is warranted.
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