Changes in arterial blood flow of free flaps after the administration of sildenafil in swine.

Abstract:

:We evaluated blood flow changes after experimental free tissue transfer and the potential hemodynamic effect of sildenafil on the free flap. Sixteen swine were used for free transfer of a latissimus dorsi myocutaneous flap to the chest that was anastomosed to the internal mammary vessels, and were randomized into controls and study group. The latter received a single dose of sildenafil, 6 hours following flap revascularization. Doppler ultrasonography revealed that arterial flow was mainly systolic postoperatively. Diastolic flow patterns were gradually restored after the first postoperative day. Pulsatility index (PI) significantly increased and flow volume decreased in all animals postoperatively. In the sildenafil group, PI significantly decreased and flow volume increased, while diastolic flow patterns were restored earlier on compared to controls, postoperatively. In conclusion, the administration of sildenafil after free tissue transfer increases flow volume and facilitates the restoration of diastolic blood flow patterns in the early critical postoperative period.

journal_name

Microsurgery

journal_title

Microsurgery

authors

Gravvanis A,Papalois A,Delikonstantinou I,Pentilas N,Zogogiannis I,Tsoutsos D,Karakitsos D

doi

10.1002/micr.20909

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

465-71

issue

6

eissn

0738-1085

issn

1098-2752

journal_volume

31

pub_type

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