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  • Title: Syringes versus Chinese cups in harvesting suction-induced blister graft: a randomized split-body study.
    Author: Anbar TS, Moftah NH, El-Khayyat MAM, El-Fakahany HM, Abdel-Rahman AT, Saad EK.
    Journal: Int J Dermatol; 2018 Oct; 57(10):1249-1252. PubMed ID: 29797713.
    Abstract:
    BACKGROUND: Suction blister grafting (SBG) is a technique where the pigmented epidermis is harvested from the donor site by induction of a blister using different suction methods as syringes, Chinese cups, suction device, etc. However, pain, time consumption, incomplete blister formation, and failure of blister development are the main limitations. OBJECTIVE: To compare between cups and syringes of similar diameter in inducing suction blisters. PATIENTS AND METHODS: In 30 patients with stable nonsegmental vitiligo, 2-cm-diameter (20 ml) syringe was applied on the anterolateral aspect of one thigh and a 2-cm-diameter cup on the corresponding site of the other thigh where right and left sides were chosen randomly. Patients were observed untill complete blister development or for a maximum of 3 hours. Suction blister induction time (SBIT) and the blister diameter were recorded for each patient. Pain during the process of induction was evaluated. RESULTS: Incomplete blister development was noted in 9 out of 30 (30%) with 2 cm syringes and 6 out of 30 (20%) with the similar diameter cups with no significant difference (P = 0.49). No significant difference was found between SBIT induced by the 2 cm syringes and the similar size cups (101.17 ± 68.14 minutes, 98 ± 56.84 minutes, respectively) (P = 0.85). Meanwhile, blister diameter induced by either syringe or cup was not significantly different (P = 0.37). Anesthesia was for short duration with xylocaine, and pain was intolerable in both sides in the first seven patients. A combination of xylocaine and bupivacaine was used with prolonged loss of pain in 17 of the remaining 23 patients and tolerable pain in six patients similarly in both sides. CONCLUSION: According to present results, the differences in SIBT, diameter of blisters, and number of complete blister formation induced by either syringes or cups of similar size were not significant. Therefore, whatever the available and feasible technique for the surgeon will be the ideal choice. A combination of xylocaine and bupivacaine is recommended to overcome the accompanying pain of the procedure.
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