Assessment of perfusion of free flaps used in head and neck reconstruction using pulsatility index.

Indian J Plast Surg · 2017 · PMC5770931 · PMID 29343893

Europe PMC DOI

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a decreasing trendno p-value reported

In all cases where the flaps remained healthy the PI showed a decreasing trend which means from post-operative day 1 to day 7 the resistance in the flap shows a decreasing trend.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.