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Monnet et al: Influence of conventional versus unidirectional barbed suture on leakage pressures in canine vesicourethral anastomosis: An ex-vivo study
Veterinary Surgery 5, 2023

🔍 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.

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← Articles

Monnet et al: Influence of conventional versus unidirectional barbed suture on leakage pressures in canine vesicourethral anastomosis: An ex-vivo study
Veterinary Surgery 5, 2023

🔍 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.

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Multiple Choice Questions on this study

In Monnet 2023 et al., on barbed vs conventional suture in vesicourethral anastomosis (VUA), which of the following best describes the leakage sites observed?

A. All leaks were dorsal
B. Leaks occurred only at knots
C. Most leaks were lateral
D. Leaks were lateral or ventral
E. Leaks occurred at ureteral ligation

Answer: Leaks were lateral or ventral

Explanation: Leakage was seen ventrally or laterally between suture bites in both groups; no dorsal leakage was reported.
In Monnet 2023 et al., on barbed vs conventional suture in vesicourethral anastomosis (VUA), what was the key finding regarding leakage pressure?

A. UBS had significantly higher leakage pressure
B. C group leaked more than UBS
C. Leakage pressure was statistically similar
D. UBS leaked only at high pressures
E. All sutures failed

Answer: Leakage pressure was statistically similar

Explanation: The difference in leakage pressure (UBS: 8.6 mmHg vs. C: 11.7 mmHg) was not statistically significant (p = .236).
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?

A. It eliminates need for catheter
B. It causes more fibrosis
C. It increases urethral narrowing
D. Leakage pressure remains low
E. Cost is significantly higher

Answer: Leakage pressure remains low

Explanation: Despite shorter suturing time, UBS had lower leakage pressure (some as low as 5 mmHg), necessitating catheter use post-op.
In Monnet 2023 et al., on barbed vs conventional suture in vesicourethral anastomosis (VUA), how did the number of suture bites compare between the UBS and conventional groups?

A. UBS required more suture bites
B. UBS and C groups used the same number
C. UBS required fewer suture bites
D. UBS failed due to fewer bites
E. C required fewer bites

Answer: UBS required fewer suture bites

Explanation: UBS group used significantly fewer suture bites (median 14 vs. 19; p = .012).
In Monnet 2023 et al., on barbed vs conventional suture in vesicourethral anastomosis (VUA), what was the median suturing time for the unidirectional barbed suture group (UBS)?

A. 21.3 minutes
B. 14.5 minutes
C. 17.3 minutes
D. 12.7 minutes
E. 10.2 minutes

Answer: 12.7 minutes

Explanation: The UBS group had a significantly shorter median suturing time than the conventional group (p < .0002).

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