Chen HJ, Sun GD, Zhu P, Zhou ZL, Chen YG, Yang BL Effective and long-term outcome following ligation of the intersphincteric fistula tract (LIFT) for transsphincteric fistula. Int J Colorectal Dis. 2017 Apr;32(4):583-585. doi: 10.1007/s00384-016-2723-2. Epub 2016 Nov 23.
Dudukgian H, Abcarian H Why do we have so much trouble treating anal fistula? World J Gastroenterol. 2011 Jul 28;17(28):3292-6. doi: 10.3748/wjg.v17.i28.3292.
Khadia M, Muduli IC, Das SK, Mallick SN, Bag L, Pati MR Management of Fistula-In-Ano with Special Reference to Ligation of Intersphincteric Fistula Tract. Niger J Surg. 2016 Jan-Jun;22(1):1-4. doi: 10.4103/1117-6806.169818.
Mushaya C, Bartlett L, Schulze B, Ho YH Ligation of intersphincteric fistula tract compared with advancement flap for complex anorectal fistulas requiring initial seton drainage. Am J Surg. 2012 Sep;204(3):283-9. doi: 10.1016/j.amjsurg.2011.10.025. Epub 2012 May 19.
Xu Y, Tang W Ligation of Intersphincteric Fistula Tract Is Suitable for Recurrent Anal Fistulas from Follow-Up of 16 Months. Biomed Res Int. 2017;2017:3152424. doi: 10.1155/2017/3152424. Epub 2017 Feb 8.
Ye F, Tang C, Wang D, Zheng S Early experience with the modificated approach of ligation of the intersphincteric fistula tract for high transsphincteric fistula. World J Surg. 2015 Apr;39(4):1059-65. doi: 10.1007/s00268-014-2888-1.
Zirak-Schmidt S, Perdawood SK Management of anal fistula by ligation of the intersphincteric fistula tract - a systematic review. Dan Med J. 2014 Dec;61(12):A4977. Review.
LIFT Technique Versus Seton in Management of Anal Fistula
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
