Veterinary evidence shortlist — October 30, 2026

Three publications dated October 26 and one earlier October pilot study, selected for clinical reasoning—not as new standards of care. The feline CT and fixation appraisals use author abstracts indexed by Europe PMC; the pancreatitis appraisal uses the publisher abstract and indexed discussion.

1. Pyelonephritis: diagnostic confidence exceeds the evidence

Pyelonephritis in cats and dogs – a scoping review
BMC Veterinary Research — October 26, 2026; full text.

• Evidence: Prospectively registered scoping review of 176 studies. Only 19 provided clinical diagnostic criteria; definitions varied across microbiology, clinical signs, laboratory abnormalities and imaging. No clinical treatment trials were identified, and long-term renal functional outcomes were scarcely studied. Renal pelvic dilation had substantial overlap among renal conditions, leaving ultrasound specificity uncertain.
• Practical takeaway — clinical inference: Do not diagnose pyelonephritis from pyelectasia or azotaemia alone. Integrate cystocentesis culture, systemic evidence, imaging and the possibility of obstruction or pyonephrosis. The review cannot identify an optimal antibiotic or validate a particular duration.
• Limitations/why read: Heterogeneous studies, many case reports, English/German restriction and no grey literature; the evidence search was last updated February 5, 2025. Valuable because it exposes exactly where a familiar diagnostic label rests on weak evidence.

2. Feline head trauma: no significant contrast benefit detected in this small CT study

Benefits of contrast-enhanced computed tomography over plain computed tomography for head trauma in 41 cats
Journal of Feline Medicine and Surgery — October 26, 2026; author abstract indexed by Europe PMC; full methods not reviewed.

• Evidence: Three radiologists of differing experience independently reviewed pre- and postcontrast studies from 41 cats. No statistically significant difference between plain and contrast-enhanced CT was detected for fractures, extracranial injury or intracranial abnormalities. Agreement for hemorrhage and cerebral edema was low and variable regardless of contrast or reader experience.
• Practical takeaway — clinical inference: Contrast is unlikely to improve routine fracture assessment. More importantly, a reassuring CT interpretation should not outweigh serial neurologic examinations or clinical deterioration.
• Limitations/why read: Only 41 cats; full methods were not reviewed. Reader agreement should not be mistaken for a direct measure of diagnostic accuracy. It sharpens decisions about imaging protocols and diagnostic uncertainty rather than proving that contrast is never indicated.

3. Acute pancreatitis analgesia: promising opioid-sparing regional block (older selection)

Bupivacaine liposomal injectable suspension via TAP block for pain in dogs with acute pancreatitis
Animals — October 17, 2026; publisher abstract and indexed discussion reviewed, not full methods. Older selection.

• Evidence: Blinded, placebo-controlled pilot trial: five dogs received liposomal-bupivacaine TAP blocks and five conventional opioid treatment. Seventy-two-hour methadone exposure was lower with TAP blockade (0.18 versus 0.99 mg/kg), while delayed gastrointestinal transit occurred in both groups.
• Practical takeaway — clinical inference: A preliminary opioid-sparing signal worth further study—not an established replacement for opioid analgesia. Two dogs in each group required rescue analgesia, reinforcing the importance of serial pain scoring.
• Limitations/why read: Only ten dogs; lower opioid exposure was partly anticipated by treatment design. Gastrointestinal transit data were descriptive and incomplete. The study cannot establish feline benefit or improved patient-centred outcomes. Worth reading as an unusually relevant prospective emergency-care trial.

4. Minimally invasive fixation for feline distal hindlimb trauma

Management of distal hindlimb injuries in cats using an Exvet external skeletal fixation system
Journal of Feline Medicine and Surgery — October 26, 2026; author abstract indexed by Europe PMC; full methods not reviewed.

• Evidence: Four-centre retrospective series of 35 cats. Thirty-two of 35 cats (91.4%) bore weight immediately; complications occurred in 20%, including 5.7% major complications. At fixator removal (mean 34 days), reported functional outcomes were full or acceptable.
• Practical takeaway — clinical inference: The system is a plausible option for selected distal fractures or instability when closed or limited-open reduction is achievable.
• Limitations/why read: No comparator; only 35 of 73 evaluated cats met inclusion criteria. Selection and implant-specific expertise limit generalization, and short-term function does not establish durable benefit. Useful for surgical planning, but insufficient to establish superiority over established fixation methods.

Educational evidence appraisal for veterinary professionals and students, not patient-specific treatment guidance. Apply current references and professional judgment.