Hepatic Encephalopathy in a Two-Year-Old Labrador Retriever with an Intrahepatic Portosystemic Shunt
Bibliographic record
Abstract
A 2-year-old, male castrated Labrador Retriever was presented to Cornell?s Emergency Service for evaluation of a several day history of abnormal mentation and inappetence that progressed to an obtunded mental state. The patient was previously diagnosed with an intrahepatic portosystemic shunt and had been successfully medically managed for two years. On presentation to Cornell?s emergency room, the patient was laterally recumbent, obtunded, and dysphoric. He was tachycardic with bounding pulses, tachypneic, and had an elevated temperature. Melena was noted on the rectal thermometer. Point of care bloodwork revealed a mixed acid-base disturbance, hypernatremia, hyperchloremia, and hyperlactatemia. An intravenous catheter was placed and a fluid bolus reduced the patient?s heart rate and rectal temperature to within the normal range. The dog was hospitalized and his care was transferred to the Critical Care Service. The patient?s mental state progressed to intermittent head-pressing, ataxia, and circling followed by periods of profound obtundation. Neurologic examination revealed an inconsistent menace response. Intravenous mannitol was administered, as well as broad spectrum antimicrobials. Both oral lactulose and lactulose enemas were instituted, and gastroprotectants and anti-emetics were administered. An abdominal ultrasound confirmed the presence of an intrahepatic portosystemic shunt, as well as bilateral renomegaly. Complete bloodwork revealed moderate thrombocytopenia, elevated liver enzymes, and an elevated serum ammonia level consistent with hepatic insufficiency. Serial bloodwork demonstrated a regenerative anemia. Due to the anemia and melena, gastrointestinal hemorrhage was suspected to be the acute inciting cause of hepatic encephalopathy. Over the next several days, the patient?s mentation improved markedly in response to treatment. His anemia initially worsened and then plateaued, though he developed polyuria/polydipsia and profuse diarrhea. The enemas and intravenous therapies were discontinued and his care was transferred to the Internal Medicine Service. He was discharged to the care of his owners after three days in the hospital. This seminar will discuss the etiology, pathogenesis, management, and prognosis for hepatic encephalopathy secondary to portosystemic shunts.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.004 | 0.003 |
| Insufficient payload (model declined to judge) | 0.002 | 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".