## **Core Concept**
Uterine atony refers to the failure of the uterus to contract following childbirth, leading to postpartum hemorrhage. This condition is a leading cause of maternal morbidity and mortality worldwide. The management and prevention of uterine atony involve understanding its causes and risk factors.

## **Why the Correct Answer is Right**
The correct answer, , is associated with uterine atony. Uterine atony can be caused by various factors including overdistension of the uterus (as in multiple gestations or polyhydramnios), prolonged labor, and certain medications. However, among the options provided, we need to identify which one does NOT typically cause or associate with uterine atony.

## **Why Each Wrong Option is Incorrect**
- **Option A:** is known to cause uterine atony. Overdistension of the uterus can lead to decreased uterine tone and atony.
- **Option B:** can lead to uterine atony. Prolonged labor is a risk factor for uterine exhaustion and atony.
- **Option D:** is associated with uterine atony. Certain conditions and interventions can predispose to uterine atony.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that uterine atony can often be prevented or managed with uterine massage, administration of uterotonic agents (like oxytocin), and addressing any underlying causes of uterine overdistension or prolonged labor. Early recognition and intervention are critical.

## **Correct Answer:** .