Moore et al: Association between divisional location and short-term outcome of liver mass resection in 124 dogs
Veterinary Surgery 4, 2023

🔍 Key Findings

Liver masses were most common in the left division (58%), followed by central (27%) and right (15%).
Right divisional masses were significantly associated with intraoperative complications (33% vs 5.6% left, p = .0037), particularly hemorrhage and injury to major vessels.
Mortality rate was 6.5% overall, with no significant association with liver lobe location.
Postoperative complications occurred in 28.7% of cases, but were not significantly associated with mass location.
Thoracic incision extension (sternotomy or diaphragmotomy) increased odds of postoperative complications by 9.1x (p < .001).
Use of TA stapler significantly reduced both intraoperative (OR 19x lower) and postoperative complications (OR 4.4x lower) vs other methods.
Specialist surgeons and heavier dogs had significantly fewer postoperative complications.
Right lobectomies often required thoracic extension, indirectly linking them to increased postoperative morbidity.

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Moore et al: Association between divisional location and short-term outcome of liver mass resection in 124 dogs
Veterinary Surgery 4, 2023

🔍 Key Findings

Liver masses were most common in the left division (58%), followed by central (27%) and right (15%).
Right divisional masses were significantly associated with intraoperative complications (33% vs 5.6% left, p = .0037), particularly hemorrhage and injury to major vessels.
Mortality rate was 6.5% overall, with no significant association with liver lobe location.
Postoperative complications occurred in 28.7% of cases, but were not significantly associated with mass location.
Thoracic incision extension (sternotomy or diaphragmotomy) increased odds of postoperative complications by 9.1x (p < .001).
Use of TA stapler significantly reduced both intraoperative (OR 19x lower) and postoperative complications (OR 4.4x lower) vs other methods.
Specialist surgeons and heavier dogs had significantly fewer postoperative complications.
Right lobectomies often required thoracic extension, indirectly linking them to increased postoperative morbidity.

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Multiple Choice Questions on this study

In Moore 2023 et al., on Divisional outcomes in canine liver mass resection, which liver division was most commonly affected by liver masses in dogs?

A. Right

B. Left

C. Central

D. Quadrate

E. Caudate

Answer: Left

Explanation: 58% of liver masses were located in the left division.

In Moore 2023 et al., on Divisional outcomes in canine liver mass resection, which factors were associated with **fewer** postoperative complications in dogs undergoing liver mass resection?

A. Low body weight and non-specialist surgeon

B. Right liver location and TA stapler use

C. Heavier body weight and specialist surgeon

D. Thoracic incision and longer surgery

E. Older age and multiple lobes affected

Answer: Heavier body weight and specialist surgeon

Explanation: Both heavier dogs and specialist surgeons were associated with fewer postoperative complications.

In Moore 2023 et al., on Divisional outcomes in canine liver mass resection, right divisional liver masses were significantly associated with which intraoperative issue?

A. Bradycardia

B. Bile leakage

C. Pneumothorax

D. Hemorrhage and vessel injury

E. Hepatic encephalopathy

Answer: Hemorrhage and vessel injury

Explanation: Right divisional masses had a higher rate of intraoperative complications, including hemorrhage and major vessel injury.

In Moore 2023 et al., on Divisional outcomes in canine liver mass resection, what impact did TA stapler use have on surgical outcomes in liver mass resection?

A. Increased operative time

B. No significant effect

C. Reduced intraoperative but not postoperative complications

D. Reduced both intraoperative and postoperative complications

E. Increased postoperative complications

Answer: Reduced both intraoperative and postoperative complications

Explanation: Use of TA stapler reduced intraoperative complications (19x lower) and postoperative complications (4.4x lower).

In Moore 2023 et al., on Divisional outcomes in canine liver mass resection, what was the effect of thoracic incision extension on postoperative complications?

A. No significant effect

B. Decreased complication risk

C. 9.1x increased odds of complications

D. Reduced need for blood transfusion

E. Increased operative time only

Answer: 9.1x increased odds of complications

Explanation: Thoracic extension (e.g., sternotomy) significantly increased the odds of postoperative complications.

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