A nurse is assessing a postpartum client for fundal height, location, and consistency. The fundus is found to be displaced laterally to the right, and there is uterine atony. Which of the following is the cause of the uterine atony?

Choice A rationale
Uterine atony refers to a soft and weak uterus after childbirth. It happens when your uterine muscles don’t contract enough to clamp the placental blood vessels shut after childbirth. This can lead to life-threatening blood loss after delivery. One of the causes of uterine atony is urinary retention. When the bladder is full, it can displace the uterus, preventing it from contracting properly. This can lead to uterine atony and postpartum hemorrhage. Therefore, urinary retention can cause uterine atony and lateral displacement of the fundus.
Choice B rationale
Poor involution of the uterus is a condition where the uterus does not return to its normal size after childbirth. While poor involution can lead to prolonged bleeding, it does not directly cause uterine atony. Uterine atony is specifically a lack of muscle contraction, while poor involution is a failure of the uterus to reduce in size.
Choice C rationale
While infection can lead to many complications during the postpartum period, it is not a direct cause of uterine atony. Infections can cause endometritis, which is inflammation of the uterine lining, but this does not prevent the uterus from contracting.
Choice D rationale
Hemorrhage, or heavy bleeding, is a result of uterine atony, not a cause. When the uterus does not contract properly after childbirth, it can lead to excessive bleeding, or hemorrhage.

Choice A rationale
Performing nasopharyngeal suctioning for a maximum of 5 seconds is not a recommended action for an infant diagnosed with Tetralogy of Fallot. This procedure is typically used to clear the airway in infants with respiratory distress, not heart conditions.
Choice B rationale
Positioning the infant in a knee-chest position can help increase blood flow to the lungs, which is beneficial for an infant with Tetralogy of Fallot. This condition involves a combination of heart defects that affect the normal flow of blood through the heart.
Choice C rationale
Administering morphine via IV bolus is not a recommended action for an infant diagnosed with Tetralogy of Fallot. While morphine is a powerful pain reliever, it is not typically used in the management of this condition.
Choice D rationale
Providing 100% oxygen by face mask is not a recommended action for an infant diagnosed with Tetralogy of Fallot. While supplemental oxygen can help increase the amount of oxygen in the blood, it does not address the underlying heart defects associated with this condition.