Twenty minutes after a vaginal birth, a client has heavy vaginal bleeding, a boggy uterus, and a heart rate of 118/min. Which action should the nurse take first?

Heavy bleeding with a boggy uterus indicates postpartum hemorrhage likely related to uterine atony. Begin uterine massage and activate the hemorrhage response so uterotonics, tranexamic acid, fluids, and source evaluation occur without delay.

Quick answer
Begin uterine massage and activate the postpartum hemorrhage response. A boggy uterus with heavy bleeding and heart rate 118/min requires immediate coordinated treatment.

Why this is correct
A boggy uterus suggests inadequate uterine contraction, leaving placental-site vessels open. Current postpartum hemorrhage care emphasizes early recognition and rapid bundled treatment, including uterine massage, an oxytocic medication, tranexamic acid, IV fluids, and examination for the bleeding source.

Easy analogy or mental picture
The contracting uterus works like a living clamp over placental blood vessels. A boggy uterus is a loose clamp, so massage helps it tighten while the full hemorrhage team treats circulation and other causes; massage alone is not the complete bundle.

Memory hook
Heavy bleeding plus a boggy fundus means massage now and mobilize the hemorrhage bundle now.

NCLEX decision rule
When postpartum bleeding is heavy and the uterus is boggy, treat uterine atony immediately while activating the hemorrhage protocol. Do not delay action to finish measurement or a single-cause examination before mobilizing the team.

Why the other choices are wrong
A laceration assessment is important but should not delay treatment of obvious uterine atony. Quantifying loss continues during care rather than before escalation, and assisted voiding is too slow for active hemorrhage with tachycardia.