This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': "Method of sterilization which is least effective is: \nSelect and explain. \nA. Pomeroy's technique, B. Laparoscopy, C. Vaginal fimbriectomy, D. Hysteroscopic tubal occlusion", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is d i.e. Hysteroscopic tubal occlusion Coplc tubal occlusion Cauterisation (Failure rate 30%) Sclerosants (Failure rate 15%) I - Due to high failure rate these methods are obsolete now Hysteroscopic tubal occlusion is done by 2 methods and both these methods have high failure rates. Also Know : Pomeroy's method 0.4'3/0deg Madiener 7% Irwing Irreversible Fimbriectomy Irreversible Laparoscopic sterilization 0.6% Hysteroscopic tubal block Cauterisation 30% Sclerosants 15%", 'role': 'assistant'}]