Your Custom Quiz

In Ibrahim 2022 et al., on scrotal arterial supply, what was the observed consequence when scrotal flaps were based on cranial supply only?

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Correct. Cranial-based flaps showed approximately 27% distal necrosis, suggesting inadequate perfusion without caudal supply.
Incorrect. The correct answer is Partial distal flap necrosis (~27%).
Cranial-based flaps showed approximately 27% distal necrosis, suggesting inadequate perfusion without caudal supply.

🔍 Key Findings

  • Dorsal scrotal arteries, branching from the ventral perineal arteries, are the dominant arterial supply to the scrotum in dogs.
  • The ventral scrotal arteries, arising from the external pudendal arteries, perfused only the cranial scrotal border and were inconsistently present or absent in some dogs.
  • A scrotal flap based on the dorsal scrotal arteries showed strong perfusion and may be a viable axial pattern flap.
  • Perfusion was consistent across fresh and frozen cadavers, showing no difference due to preservation method.
  • Poor flap survival (27%) occurred when based on cranial supply alone (i.e., ventral scrotal arteries), confirming importance of preserving caudal supply.
  • There are anastomoses between dorsal and ventral scrotal arteries, offering collateral flow but insufficient alone for complete perfusion.
  • Scrotal flaps based on the caudal pedicle may be applicable for reconstruction of proximal medial/lateral thigh wounds.
  • Proposed flap requires careful preservation of ventral perineal arteries, ideally designed 2.5–3 cm lateral to midline in large dogs.

Ibrahim

Veterinary Surgery

4

2022

Arterial supply to the scrotum: A cadaveric angiographic study

2022-4-VS-ibrahim-2

Article Title: Arterial supply to the scrotum: A cadaveric angiographic study

Journal: Veterinary Surgery

In Dalton 2023 et al., In Minimally invasive acetabular fracture repair in dogs, what was the clinical outcome of the Chihuahua case treated with minimally invasive acetabular repair?

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Correct. The clinical case achieved rapid functional recovery and bone union, despite one screw fracture without consequence.
Incorrect. The correct answer is Weight-bearing within 24 hours and radiographic union at 3 months.
The clinical case achieved rapid functional recovery and bone union, despite one screw fracture without consequence.

🔍 Key Findings

  • Feasibility study in 5 canine cadavers plus 1 clinical case (Chihuahua, 5.5 kg).
  • Technique used two small approaches (caudal and craniolateral) connected with an epiperiosteal tunnel.
  • Plates were precontoured on mirrored 3D-printed hemipelves to improve fit and reduce intraoperative bending.
  • Cadaver outcomes: fracture gap <2 mm, step defect <1 mm, pelvic angulation <5°.
  • Sciatic nerve injury was minimal: 1/5 cadavers had a mild indentation; others had no gross injury.
  • Median total surgical time: ~46 minutes in cadavers; incisions ~5 cm.
  • Clinical Chihuahua case: weight-bearing within 24 hrs, radiographic union at 3 months; one screw fractured but no adverse effect.
  • Authors conclude: MIAF with 3D printing is feasible and accurate, but requires further evaluation before routine use.

Dalton

Veterinary Surgery

7

2023

Minimally invasive repair of acetabular fractures in dogs: Ex vivo feasibility study and case report

2023-7-VS-dalton-5

Article Title: Minimally invasive repair of acetabular fractures in dogs: Ex vivo feasibility study and case report

Journal: Veterinary Surgery

In Wood 2024 et al., on knot security and locking throws, which knot had the poorest performance, especially without a locking throw?

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Correct. Forwarder knot showed the lowest holding pressures, especially when unlocked.
Incorrect. The correct answer is Forwarder knot.
Forwarder knot showed the lowest holding pressures, especially when unlocked.

🔍 Key Findings

  • Adding a single locking throw significantly increased holding security for specific knots, including the surgeon's throw (p = .0001) and square throw (p = .0002).
  • For the Miller's throw (p = .166) and strangle throw (p = .808), no significant improvement was observed with a locking throw.
  • After locking throw addition, all five knots leaked at similar pressures (p = .5233), and these pressures exceeded physiologic arterial pressures.
  • Surgeon's throw without a locking throw had the lowest leak pressure (62.5 ± 46.2 mm Hg), below physiologic arterial values.
  • The square throw without locking also leaked below physiologic pressures (148.7 ± 109.4 mm Hg), though it outperformed the surgeon's throw.
  • Miller’s and strangle throws performed significantly better than square or surgeon’s throws without locking, achieving leak pressures >200 mm Hg.
  • All knots used 2-0 polyglyconate monofilament (Maxon); no comparisons across suture types or sizes were performed.
  • Authors concluded that correct tensioning and locking throw addition are key to safe vascular ligation. Miller’s, strangle, or slip knots are preferred for challenging surgical fields.

Wood

Veterinary Surgery

4

2024

Influence of a single locking throw on the in vitro holding security of five friction knots using two monofilament suture materials in a canine model

2024-4-VS-wood-5

Article Title: Influence of a single locking throw on the in vitro holding security of five friction knots using two monofilament suture materials in a canine model

Journal: Veterinary Surgery

In Muroi 2025 et al., on refracture risk, what bone quality indicator was significantly lower in dogs that refractured **after plate removal**?

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Correct. Lower PVR was significantly associated with refracture risk after plate removal, suggesting reduced bone mineral density.
Incorrect. The correct answer is Pixel value ratio (PVR).
Lower PVR was significantly associated with refracture risk after plate removal, suggesting reduced bone mineral density.

🔍 Key Findings

  • Refracture occurred in 5.5% of limbs, with higher incidence in the plate removal group (12.5%) vs. non-removal (3.5%).
  • In the non-plate removal group, refractures occurred at the most distal screw site, linked to greater screw position change during growth (OR 1.79, p=0.04).
  • Screw-to-bone diameter ratio (SBDR) >0.4 was a significant risk factor for refracture in the plate retention group.
  • In the plate removal group, refractures occurred at the original fracture site, associated with lower pixel value ratio (bone mineral density) and reduced radial thickness.
  • Implant-induced osteoporosis (IIO) beneath the plate likely contributed to refracture risk after plate removal.
  • Younger age at fracture (<6 months) was associated with higher refracture risk due to ongoing radial growth and shifting screw position.
  • No significant association was found between refracture and plate type (locking vs conventional), fixation method, or ulnar union.
  • Recommendations include careful SBDR sizing, motion restriction, and cautious plate removal decisions in growing dogs.

Muroi

Veterinary and Comparative Orthopaedics and Traumatology

2

2025

A Retrospective Study of Risk Factors Associated with Refracture after Repair of Radial–Ulnar Fractures in Small-Breed Dogs

2025-2-VCOT-muroi-4

Article Title: A Retrospective Study of Risk Factors Associated with Refracture after Repair of Radial–Ulnar Fractures in Small-Breed Dogs

Journal: Veterinary and Comparative Orthopaedics and Traumatology

In Buote 2023 et al., on 3D-printed cannulas in feline laparoscopy, what was the effect on mean surgical time?

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Correct. Use of 3DPCs reduced mean surgical time from 125.6 to 95.2 minutes (*p* = 0.03).
Incorrect. The correct answer is Decreased by 30 minutes.
Use of 3DPCs reduced mean surgical time from 125.6 to 95.2 minutes (*p* = 0.03).

🔍 Key Findings

  • 3D-printed cannulas (3DPCs) reduced mean surgical time significantly in cadaveric procedures (125.6 vs 95.2 min, p = 0.03).
  • Cannula pullout events decreased from a mean of 10 to 2.2 per procedure when using only 3DPCs (p = 0.03).
  • Instrument collisions were significantly fewer with 3DPCs (6.8 vs 2.6 collisions, p = 0.03).
  • Live patients experienced no postoperative complications, including no incision site infections or discomfort.
  • Initial versions of 3DPCs had minor issues, including valve leakage and looser trocar fit, requiring surgical workarounds.
  • Customization of cannula shaft length (3 cm vs standard 5–8.3 cm) improved working space and reduced instrument interference.
  • Production cost was under $5 per cannula, suggesting 3DPCs may be a cost-effective and reusable alternative for small patients.
  • Study supports broader use of 3DPCs in laparoscopic procedures requiring long-jawed instruments or intricate tissue handling.

Buote

Veterinary Surgery

6

2023

3D printed cannulas for use in laparoscopic surgery in feline patients: A cadaveric study and case series

2023-6-VS-buote-1

Article Title: 3D printed cannulas for use in laparoscopic surgery in feline patients: A cadaveric study and case series

Journal: Veterinary Surgery

In Geier 2022 et al., on smoke evacuation in TPLO, which of the following statements best reflects the effect of electrosurgery on ultrafine particle levels during surgery?

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Correct. Electrosurgery significantly raised particle counts in both groups, regardless of evacuator use.
Incorrect. The correct answer is Electrosurgery increased particle levels above baseline in both groups.
Electrosurgery significantly raised particle counts in both groups, regardless of evacuator use.

🔍 Key Findings

  • Use of smoke evacuators reduced ultrafine particle concentrations by 56.4% during approach to the proximal tibia for TPLO in dogs.
  • Mean intraoperative particle concentrations were significantly higher in surgeries without smoke evacuation (1352 ppc vs. 763 ppc, P < .0001).
  • Maximum particle concentrations were six times higher without smoke evacuation (62,450 ppc vs. 10,100 ppc, P < .0001).
  • Particle counts increased above baseline regardless of evacuator use, confirming electrosurgery contributes substantially to airborne particles.
  • Surgeons noted reduced odor and health concerns when using the smoke evacuator, despite initial visibility limitations due to pencil attachment.
  • Standard surgical masks do not protect against ultrafine particles, underscoring the importance of smoke mitigation systems.
  • The smoke-evacuation unit did not eliminate all ultrafine particles, suggesting optimization (e.g., higher power setting) may be beneficial.
  • This is the first clinical veterinary study to measure surgical smoke reduction using evacuators during TPLO.

Geier

Veterinary Surgery

5

2022

The effect of a smoke‐evacuation unit on ultrafine particle concentrations in the operating room during approach to the proximal tibia for tibial plateau-leveling osteotomy surgery in dogs

2022-5-VS-geier-2

Article Title: The effect of a smoke‐evacuation unit on ultrafine particle concentrations in the operating room during approach to the proximal tibia for tibial plateau-leveling osteotomy surgery in dogs

Journal: Veterinary Surgery

In Cruciani 2022 et al., on feline pancreaticoduodenostomy, what complication did *not* occur during the follow-up period?

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Correct. The cat showed no signs of pancreatitis or pancreatic insufficiency; weight gain was observed.
Incorrect. The correct answer is All of the above.
The cat showed no signs of pancreatitis or pancreatic insufficiency; weight gain was observed.

🔍 Key Findings

  • Left pancreaticoduodenostomy successfully restored digestive continuity after right lobe and body pancreatectomy in a cat.
  • No clinical signs of exocrine or endocrine insufficiency were observed postoperatively up to 225 days.
  • Histopathology confirmed chronic pancreatitis with abscess formation and reactive lymphadenopathy.
  • No postoperative pancreatitis developed, based on imaging and normal feline pancreatic lipase levels.
  • Progressive focal ampulla-like dilation of the pancreatic duct occurred near the anastomosis without clinical signs.
  • The cat maintained weight and improved clinically for several months post-op, indicating satisfactory outcomes.
  • Surgical technique involved end-to-side anastomosis between the left pancreatic duct and duodenum.
  • Ultimately, the cat was euthanized due to disseminated carcinoma, presumed unrelated to the pancreatic surgery.

Cruciani

Veterinary Surgery

8

2022

Left pancreaticoduodenostomy after removal of the right lobe and the head of the pancreas in a cat

2022-8-VS-cruciani-4

Article Title: Left pancreaticoduodenostomy after removal of the right lobe and the head of the pancreas in a cat

Journal: Veterinary Surgery

In Parlier 2024 et al., on insufflation effects on portal pressure in dogs, what insufflation pressure was predicted to induce portal hypertension (>15 mmHg)?

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Correct. Portal hypertension was predicted to occur at 6.4 mmHg based on the exponential model.
Incorrect. The correct answer is 6.4 mmHg.
Portal hypertension was predicted to occur at 6.4 mmHg based on the exponential model.

🔍 Key Findings

  • Portal pressure increased proportionally with insufflation pressure: 38% at 6 mmHg, 95% at 10 mmHg, and 175% at 14 mmHg.
  • Exponential model: average increase of 7.45% per mmHg of insufflation pressure (CI: 4.7–10.2%).
  • No systemic hemodynamic adverse effects were observed; MAP remained >60 mmHg throughout.
  • Portal hypertension threshold (15 mmHg) predicted at ~6.4 mmHg insufflation pressure.
  • No statistical impact from patient weight, pressure-to-weight ratio, or order of insufflation rounds.
  • Measurement technique was feasible and safe, with only minor challenges (e.g., catheter kinking).
  • The study supports use of the lowest insufflation pressure needed for visualization to avoid portal hypertension.
  • Baseline portal pressures returned after desufflation, supporting comparison pre- and post-attenuation.

Parlier

Veterinary Surgery

4

2024

Prospective, randomized, clinical trial on the effects of laparoscopic insufflation pressures on portal pressures in dogs

2024-4-VS-parlier-2

Article Title: Prospective, randomized, clinical trial on the effects of laparoscopic insufflation pressures on portal pressures in dogs

Journal: Veterinary Surgery

In Whyte 2025 et al., on cannulated screw fixation, what factor was significantly associated with an increased risk of screw breakage?

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Correct. Heavier dogs (>20 kg) had a statistically significant association with screw breakage.
Incorrect. The correct answer is Body weight over 20 kg.
Heavier dogs (>20 kg) had a statistically significant association with screw breakage.

🔍 Key Findings

Study focus: Outcomes of cannulated screw fixation in unicondylar humeral condylar fractures (UHCF) in dogs.
Clinical union rate: 89%
Overall complication rate: 36%

  • Major complication: Most common was screw breakage

Significant risk factor for screw breakage:

  • Body weight >20 kg (statistically significant)

Breed distribution:

  • Spaniels, especially English Springer Spaniels, were most common

No mention of plate augmentation as standard in this cohort

Whyte

Veterinary Surgery

2

2025

Use of cannulated screws in the treatment of unicondylar humeral condylar fractures in dogs

2025-2-VS-whyte-4

Article Title: Use of cannulated screws in the treatment of unicondylar humeral condylar fractures in dogs

Journal: Veterinary Surgery

In Monnet 2023 et al., on barbed vs conventional suture in vesicourethral anastomosis (VUA), despite reduced suturing time, what is a clinical limitation of using unidirectional barbed suture for VUA?

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Correct. Despite shorter suturing time, UBS had lower leakage pressure (some as low as 5 mmHg), necessitating catheter use post-op.
Incorrect. The correct answer is Leakage pressure remains low.
Despite shorter suturing time, UBS had lower leakage pressure (some as low as 5 mmHg), necessitating catheter use post-op.

🔍 Key Findings

  • Leakage pressure was not significantly different between unidirectional barbed suture (UBS) and conventional (C) suture groups (p = .236).
  • UBS group had a 28% lower median leakage pressure than the C group (8.6 mmHg vs. 11.7 mmHg), suggesting higher biological risk of leakage.
  • UBS significantly reduced suturing time (median 12.7 vs. 17.3 minutes; p < .0002).
  • Fewer suture bites were needed in the UBS group (median 14 vs. 19; p = .012).
  • No suture breakage or urethral narrowing occurred in either group.
  • Leakage site distribution (ventral vs lateral) was similar between groups; no dorsal leaks noted.
  • Leakage occurred as low as 5 mmHg in UBS group, indicating potential for postoperative extravasation.
  • UBS may aid intracorporeal suturing in minimally invasive prostatectomy, but catheterization remains necessary postoperatively.

Monnet

Veterinary Surgery

5

2023

Influence of conventional versus unidirectional barbed suture on leakage pressures in canine vesicourethral anastomosis: An ex-vivo study

2023-5-VS-monnet-5

Article Title: Influence of conventional versus unidirectional barbed suture on leakage pressures in canine vesicourethral anastomosis: An ex-vivo study

Journal: Veterinary Surgery

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