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Title: prospective randomised clinical trial of single versus double purse-string stapled mucosectomy in the treatment of prolapsed haemorrhoids.Authors: francisco pérez-vicente, antonio arroyo, pilar serrano, fernando candela, ana sanchez and rafael calpena.Citation: int j colorectal dis (2006) 21: 38¿43; doi 10.1007/s00384-004-0720-3; published online: 21 april 2005.This prospective randomized clinical trial aimed to compare the outcomes after single purse-string csm versus double purse-string csm.Between may 2000 and june 2002, one hundred consecutive patients (male n=63, female n=37, mean age 50.70 years) were randomized to single purse-string csm (group 1, n=50, male n=34, female n=16, with mean age 49.50 years) versus double purse-string csm (group 2, n=50, male n=29, female n=21, with mean age 51.92 years.The operation was carried out according to the technique initially described by longo utilizing a 33-mm circular stapling device (pph 33-01, ethicon endosurgery).Complications in the single purse group included anastomotic bleeding requiring transfixive suture (n=14), staple suture defect (n=2), pain on defecation (n=14), frequent bleeding postoperative (n=7), daily bleeding postoperative (n=2) in which one patient was taken back to the operating theatre within the first 12 postoperative hours; incontinence (n=7) which spontaneously reversed with no treatment, persistent pain (n=3) in which one patient had removal of several staples that were too close to the dentate line and residual prolapse/recurrence (n=2) in which one patient underwent another csm and the other patient underwent a milligan ¿ morgan procedure.In the double purse group, complications included anastomotic bleeding requiring transfixive suture (n=23), staple suture defect (n=1), pain on defecation (n=9), frequent bleeding postoperative (n=7) and incontinence (n=5) which spontaneously reversed with no treatment.In conclusion, double purse-string csm resects a greater doughnut and increases the distance of the staple suture from the dentate line in comparison to single purse-string csm, improving results in terms of early postoperative pain.Larger series should be necessary to assert whether recurrence is lower.
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