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
The following statements are related to obstetric inversion: 
Select and explain. 
A. It is usually insidious in onset, B. It is usually acute, C. It is usually incomplete, D. In majority, it is spontaneous in nature
B: It is usually acute
Answer: B: It is usually acute 
Explanation: Uterine inversion is a condition in which there is inside out turning of the uterus.
It is a rare cause of postpartum collapse but collapse occurs suddenly after labour.
It is acute in onset.
Mostly uterine inversion is complete i.e. of third degree
Most common cause of uterine inversion is mismanagement of the third stage of labour
Spontaneous inversion can occur with an atonic uterus (in 40% cases).
Placenta accreta is a rare cause of uterine inversion.