Stress (Takotsubo) Cardiomyopathy: The Daily PANCE Blueprint
A 68-year-old woman presents with 2 hours of substernal chest pressure and dyspnea that began shortly after she learned her home had been destroyed in a wildfire. She has no cardiac history. Blood pressure is 118/72 mm Hg and the pulse is 96/min. The ECG shows ST-segment elevation in leads V2 through V5 with deep T-wave inversions. The troponin is mildly elevated and disproportionately low for the extent of the ECG change. Echocardiography shows akinesis and ballooning of the left ventricular apex with hypercontractile basal segments and an ejection fraction of 35%. Urgent coronary angiography shows no obstructive coronary artery disease. Which of the following is the most likely diagnosis?
A. Stress (Takotsubo) cardiomyopathy
B. Anterior ST-segment elevation myocardial infarction
C. Acute myocarditis
D. Hypertrophic cardiomyopathy
E. Acute pericarditis
Answer and topic summary
The answer is A. Stress (Takotsubo) cardiomyopathy
Stress cardiomyopathy is the one diagnosis that ties this picture together: an acute emotional or physical stressor, an ECG that convincingly mimics an anterior STEMI, a troponin rise far too small for the territory implied, and — the hallmark — apical akinesis with basal hypercontractility, the “apical ballooning” pattern, in a ventricle fed by angiographically normal coronaries. The mechanism is thought to be catecholamine-mediated myocardial stunning, and it is most common in postmenopausal women.
An anterior STEMI would show an occluded coronary artery and a troponin rise proportional to the ECG changes — the normal angiogram is what excludes it, and the troponin-to-ECG mismatch is the clue that should raise the question before the catheterization. Myocarditis typically follows a viral prodrome and causes global or patchy dysfunction rather than a discrete apical pattern. Hypertrophic cardiomyopathy produces asymmetric septal thickening with a dynamic outflow murmur, not apical ballooning, and would not appear abruptly after a stressor. Acute pericarditis gives diffuse ST elevation with PR-segment depression and a friction rub, with preserved systolic function.
The practical payoff: wall-motion recovery is usually complete within weeks, and treatment is supportive heart-failure care — not revascularization.
View blueprint lesson
Smarty PANCE Content Blueprint Review:
Covered under ⇒ PANCE Blueprint Cardiology ⇒ ⇒
