eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-06-15 12 Spl.Edn.1 37 41 10.13005/bbra/1602 12553 article Hassan Abshirini, Nader Saki 2 Soheila Nikakhlagh 2 Malihe Yavari 3 Hearing & Speech Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Associated Professor of Otolaryngology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Resident of Otolaryngology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Tympanoplasty is a surgical procedure to eradicate infection and restore the function of the middle ear. There are several prognostic factors that influence the success of tympanoplasty surgery. The aim of this study was to evaluate the prognostic factors that influence the result of the tympanoplasty surgery in Ahvaz University. This was a descriptive and cross sectional study conducted on 168 patients who underwent tympanoplasty operations during March 2012 to March 2014 in Emam Hospital of Ahvaz (Khuzestan, Iran). Prognostic factors such as age, sex, presence of systemic disease, location and size of perforation, duration of dry period, presence of myringosclerosis, Type of operation and status of the contra lateral ear and middle risk index (MERI) were investigated. Pearson chi-square, fishers exact test and logistic regression were used to determine the role of prognostic factors in successful of tympanoplasty. The success rate was 67.2%. Analyses showed that size of perforation (<50%), healthy opposite ear, absence of myringosclerosis, dry period greater three months and low middle ear risk index were significant prognostic factors. The consideration of these factors allows the surgeon to confer the patient before surgery. Furthermore, this will enable the surgeon to design a case specific operation strategy for each patient. https://www.biotech-asia.org/vol12_nospl_edn1/evaluation-of-prognostic-factors-in-tympanoplasty/ Tympanoplasty; Prognostic Factor; Successful Rate