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: Social & Preventive Medicine
Commonest complication following intra uterine device inseion is: 
Select and explain. 
A. Bleeding, B. Pain, C. Pelvic infection, D. Uterine perforation
A: Bleeding
Answer: A: Bleeding 
Explanation: The commonest complication following IUD inseion is increased vaginal bleeding. Greatest blood loss is caused by larger non medicated devices. Ref: Park, 22nd edition pg: 459