Atypical Clinical Presentation of Hypothermia Induced by Intrathecal Morphine in a Patient Who Underwent Total Knee Arthroplasty Under Spinal Anesthesia: A Case Report
Bibliographic record
Abstract
This case report describes a 62-year-old male who experienced paradoxical hypothermia following an elective total knee replacement (TKR) performed under spinal anesthesia with intrathecal morphine administration. The patient presented with significant hypothermia, defined as a body temperature below 35°C, approximately 45 minutes following the administration of anesthesia. The condition demonstrated resistance to conventional rewarming techniques. This condition required symptomatic treatment, leading to the administration of naloxone. After receiving two doses of naloxone, the patient's temperature stabilized, and they experienced a reduction in diaphoresis, improved alertness, and less nausea. Given the scarce documentation on non-obstetric paradoxical hypothermic reactions to intrathecal morphine, this case highlights the critical need for careful temperature monitoring when administering spinal anesthesia with intrathecal opioids. Additionally, it highlights the unusual symptoms of hypothermia that can hinder diagnosis and treatment, stressing the need for increased awareness among anesthesiologists to achieve the best possible patient outcomes.
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How this classification was reachedexpand
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".