The correlation analysis of cold intolerance and fingertip blood perfusion of the replanted fingers

Abstract

Objective To analyze the relationship between the cold intolerance and fingertip blood perfusion of the replanted fingers. Methods From October 2015 to June 2016, 30 cases of single finger replantation after more than 2 years were investigated. Replanted artery patency was checked by color Doppler flowmeter. All the cases were divided into two groups based on the unilateral or bilateral arterial blood supply. Cold Intolerance Symptom Severity (CISS) score questionnaire was used to assess and grade the severity of cold intolerance of the replanted fingers. The distal pulp blood perfusion of the contralateral and ipsilateral fingers was measured by laser Doppler flowmeter. Comparison between two groups was conducted with independent sample T-test to analyze the relationship between the fingertip blood perfusion and the cold intolerance of the replanted fingers. Results There was no statistical differences in the CISS score and the distal pulp blood perfusion between the unilateral or bilateral arterial blood supply groups (P>0.05). The distal pulp blood perfusion of the replanted fingers with mild or moderate cold intolerance had no statistical differences compared with the contralateral ones (P>0.05), while the perfusion of severe fingers decreased significantly (P<0.05). Conclusion Cold intolerance of the replanted finger is related to the decrease of distal pulp perfusion, and has no correlation with the number of blood supply artery. Key words: Replantation; Follow-up studies; Cold intolerance; Blood perfusion

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