Double Trouble in the Pericardium: A Rare Co-Infection of Tuberculosis and Tularemia Leading to Cardiac Tamponade
Bibliographic record
Abstract
Cardiac tamponade attributed to co-infection with multiple pathogens is rare. A 40-year-old man who migrated from India 10 years prior with no medical history presented with a progressive dyspnea, night sweats, intermittent fevers, weight loss over a 3-month period, and a cough. An echocardiogram revealed cardiac tamponade and further biopsy revealed necrotizing granulomas with diffuse necrotic lymphadenopathy. Early anchoring bias led to an extensive tuberculosis (TB) workup which was initially negative. However, after broadening the differential, a co-infection of tularemia and latent extrapulmonary TB was identified as the etiology of cardiac tamponade. While tularemia in the setting of immunodepression has been identified as a cause for pericarditis, there is no current literature of a tularemia and TB co-infection causing cardiac tamponade. This case highlights the importance of expanding a differential diagnosis when the presentation does not fit the diagnosis, especially when a delay in management can be consequential.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.005 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.005 | 0.004 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".