Match each clinical presentation following a recent acute myocardial infarction with the most likely specific structural or inflammatory complication.
- Sudden-onset profound hypotension, jugular venous distention, and pulseless electrical activity 6 days after an anterior myocardial infarctionVentricular free wall rupture
- New-onset harsh holosystolic murmur at the left lower sternal border with a palpable thrill and signs of biventricular failure 4 days after an anteroapical myocardial infarctionInterventricular septal rupture
- Sudden-onset severe pulmonary edema and a new soft, blowing holosystolic murmur at the apex 3 days after an inferior myocardial infarctionPapillary muscle rupture
- Pleuritic chest pain, low-grade fever, and a pericardial friction rub 4 weeks after an extensive anterior myocardial infarctionDressler syndrome (Post-cardiac injury syndrome)
Answer
The correct pairings match each specific post-myocardial infarction clinical presentation to its underlying complication based on the typical timeframe (days vs. weeks) and physical examination findings (murmur characteristics or signs of tamponade).
Each post-myocardial infarction complication can be distinguished by recognizing its classic timeframe and physical findings. Ventricular free wall rupture causes rapid tamponade and PEA at 5-14 days. Papillary muscle rupture (often after inferior MI) causes acute mitral regurgitation (apical murmur) and pulmonary edema at 3-5 days. Septal rupture causes a harsh parasternal murmur with a thrill at 3-5 days. Dressler syndrome causes pericarditis weeks to months later.
Step-by-Step Solution
Key Concept
Complications of acute myocardial infarction manifest with distinct timelines, hemodynamic profiles, and physical examination findings.
Estimated Time:1m 30s