What question did this study set out to answer?

To assess the in vitro contractile response and vascular sensitivity to phenylephrine in rat femoral arteries following microvascular anastomosis.

January 1, 2000Microsurgery

Catecholamine sensitivity in the rat femoral artery after microvascular anastomosis

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Authors

DGDaryl GoddenGloucestershire Royal Hospital RLRoderick A. LittleUniversity of South Wales AWA.H. WestonGoethe University Frankfurt

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Implication

Controlled animal study demonstrates increased phenylephrine sensitivity in rat femoral arteries after microvascular anastomosis, indicating sympathetic denervation drives flap failure.

Key Points

To assess the in vitro contractile response and vascular sensitivity to phenylephrine in rat femoral arteries following microvascular anastomosis.
Bilateral groin flaps were elevated in 55 male Wistar rats, with microvascular anastomosis performed on the test side while the contralateral side served as an unoperated control.
Femoral arteries were harvested on postoperative days 2 to 12 and suspended in vitro in increasing concentrations of phenylephrine to record vascular tone.
Test arteries subjected to microvascular anastomosis exhibited significantly greater contractile sensitivity to phenylephrine compared to control arteries (P = 0.000).
The phenylephrine-induced supersensitivity was completely blocked by phentolamine, indicating that post-surgical sympathetic denervation mediates the heightened vascular tone.

Cite This Study

Godden et al. (2000) studied this question.

synapsesocial.com/papers/6a8f08020bc823803d7d9be5 https://doi.org/10.1002/1098-2752(2000)20:5<217::aid-micr1>3.0.co;2-z

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Implication

Controlled animal study demonstrates increased phenylephrine sensitivity in rat femoral arteries after microvascular anastomosis, indicating sympathetic denervation drives flap failure.

Catecholamine sensitivity in the rat femoral artery after microvascular anastomosis

Discussion

Member takes

Implication

Key Points

Cite This Study

Catecholamine sensitivity in the rat femoral artery after microvascular anastomosis

Discussion

Member takes

Implication

Key Points

Cite This Study

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