5 flourouracil-induced apical ballooning syndrome: a case report
Why this work is in the frame
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Bibliographic record
Abstract
The apical ballooning syndrome (ABS) is a recently described stress-mediated acute cardiac syndrome characterized by transient wall-motion abnormalities involving the apex and midventricle with hyperkinesis of the basal left ventricular (LV) segments without obstructive epicardial coronary disease. Cardiotoxicity is not an uncommon adverse effect of chemotherapeutic agents. However, there are no reports of ABS secondary to chemotherapeutic agents. We describe the case of a woman who developed the syndrome after chemotherapy for metastatic cancer. A 79-year-old woman presented with typical ischemic chest pain, elevated cardiac enzymes with significant ST-segment abnormalities on her electrocardiogram. She underwent recent chemotherapy with fluorouracil for metastatic colorectal cancer. Echocardiography revealed a wall-motion abnormality involving the apical and periapical segments which appeared akinetic. Coronary angiography revealed no obstructive coronary lesions. The patient was stabilized with medical therapy. Four weeks later she remained completely asymptomatic. Echocardiogram revealed a normal ejection fraction and a resolution of the apical akinesis. Pathogenetic mechanisms of cardiac complications in cancer patients undergoing chemotherapy include coronary vasospasm, endothelial damage and consequent thrombus formation. In our patient, both supraphysiologic levels of plasma catecholamines and stress related neuropeptides caused by cancer diagnosis as well as chemotherapy may have contributed the development of ABS.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it