You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Augmented retraction ring in labour is known as and explain in detail?
Ans. b (Bandl's ring). (Ref. Williams, Obstetris 21st/pg.836, Dutta, Obstetrics 4th/pg.367)BANDL'S (PATHOLOGICAL RETRACTION) RING# A circular groove encircling the uterus, formed between active upper segment and distended lower segment.SCHROEDER'S (CONSTRICTION) RING# Situated at the junction of upper and lower segment.# Usually reversible and complete.# May appear in all stages of labour.# Ring is not felt per abdomen, round ligament also not felt.