CTICasesTraumatic Papillary Muscle Rupture
Imaging findings
Cardiac MRI shows a flail posteromedial papillary muscle and chordae tendineae moving freely between the left ventricle and left atrium during the cardiac cycle, accompanied by a severe, eccentric, posteriorly directed mitral regurgitation jet.
Key takeaways
Rupture of a papillary muscle or chordae tendineae is an uncommon, acute complication of blunt chest trauma. The injury typically occurs when a sudden, high-impact force hits the chest wall during late diastole or early systole, raising intraventricular pressure while the mitral valve is closed, which causes the subvalvular apparatus to fail as a "pop-off" mechanism.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Iatrogenic Chylothorax and Extrapleural Chyloma after First Rib ResectionIatrogenic
- GM-CSF-Induced Diffuse Skeletal FDG UptakeMetabolic
- Lemierre's Syndrome with Mediastinal Abscess and Septic Emboli in an InfantInfection
- Pembrolizumab-Induced Organizing PneumoniaILD
- Minute Pulmonary Meningothelial-Like NodulesArtifact
- Pulmonary AplasiaCongenital
- Pulmonary Capillary HemangiomatosisVascular
- Active Tuberculosis with Post-Bronchoscopy Bronchial SpreadInfection
See all cases from June 22, 2017 →
Related Trauma cases
- Traumatic Diaphragmatic Hernia with Hepatic Herniation
- Traumatic Lateral Diaphragmatic and Abdominal Wall Rupture
- Vertebral Body Fracture in Diffuse Idiopathic Skeletal Hyperostosis
- Traumatic Diaphragmatic Laceration and Herniation
- Extrapleural Hematoma and Esophageal Rupture
- Traumatic Aortic Injury (Type 1 and Type 3 Tears)