This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormal labor, Subject name: Anatomy
Deep transverse arrest is seen in all except : 
Select and explain. 
A. Android pelvis, B. Epidural analgesia, C. Transverse lie, D. Uterine ineia
C: Transverse lie
Answer: C: Transverse lie 
Explanation: Deep transverse arrest is a complication of occipitoposterior position, how can it occur in transverse lie. Causes of deep transverse arrest : Faulty pelvic architecture Depression of head Weak uterine contractions Laxity of pelvic floor muscles In transverse lie, presenting pa is shoulder, so deep transverse arrest doesn't occur. Ref: Datta Obs 9e pg 349.