Nursing care
Uterine Atony nursing care: what to assess and what to do first
Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated September 2026
Short answer
Uterine atony is a soft, boggy fundus that fails to contract after delivery, and it's the leading cause of postpartum hemorrhage. The first action is fundal massage, not medication. If the fundus firms with massage and then goes boggy again minutes later, suspect a full bladder displacing the uterus and have the patient void or catheterize.
The clinical picture
Uterine atony is a failure of the myometrium to contract firmly after placental delivery, leaving the uterine vessels at the placental site unclamped. The fundus feels soft and boggy instead of firm, and it may be difficult to locate a clear border on palpation. Lochia flow is typically heavier than expected, sometimes with passage of clots, and can escalate quickly because atony is the single most common cause of early postpartum hemorrhage.
Risk factors include an overdistended uterus from twins, polyhydramnios or a large baby, prolonged or precipitous labour, high parity, chorioamnionitis, and prior atony. A nurse who knows a patient carries these risk factors should have a higher index of suspicion and closer fundal checks in the immediate postpartum period, rather than waiting for bleeding to appear first.
Assessment: what to look for and in what order
Palpate the fundus first: location relative to the umbilicus, and whether it's firm or boggy. A fundus above the umbilicus or displaced to one side, combined with bogginess, points strongly toward a full bladder rather than true atony, since a distended bladder pushes the uterus up and off the midline. Massage the fundus and reassess immediately.
If the fundus firms with massage and then relaxes again within minutes, that pattern is the tell for bladder distension rather than ongoing atony. Have the patient void, or catheterize if she can't. Quantify blood loss rather than estimating by eye, since visual estimation consistently underestimates true loss, and check vital signs for the early tachycardia that precedes a drop in blood pressure in postpartum hemorrhage.
Immediate interventions
Massage the boggy fundus first, before reaching for any medication. This is the single detail that separates competent postpartum care from a delayed response: a boggy fundus is a mechanical problem before it's a pharmacological one, and massage alone often restores tone. Massage firmly with one hand supporting the lower uterine segment above the symphysis pubis to avoid uterine inversion.
If massage alone doesn't sustain tone, uterotonic medication follows: oxytocin is first-line, with methylergonovine, carboprost, or misoprostol as second-line agents depending on contraindications such as hypertension for methylergonovine or asthma for carboprost. Empty the bladder if not already done, since a full bladder blunts the effectiveness of both massage and medication. Establish or maintain IV access and increase fluids if bleeding continues.
Ongoing nursing management
Continue frequent fundal checks and lochia assessment per unit protocol, typically every 15 minutes initially and lengthening the interval as the fundus stays firm. Weigh perineal pads and linens when blood loss is significant, since one gram of saturated material approximates one millilitre of blood, and use this to track cumulative loss rather than relying on repeated visual estimates.
Monitor vital signs closely for the tachycardia and later hypotension that signal hemorrhage progressing beyond what fundal massage and uterotonics are controlling. Keep the patient supine or in a position that allows continued fundal access, and have emergency medications and a hemorrhage cart within reach if the patient carries known risk factors.
Patient and family education
Explain to the patient why you're pressing firmly on her abdomen and that some discomfort during fundal massage is expected but should ease once the uterus firms. Teach her to recognise a boggy versus a firm fundus herself, since she'll be doing self-checks after discharge, and to report heavy bleeding, passing large clots, or dizziness immediately.
Encourage frequent voiding in the postpartum period, since a full bladder is a preventable contributor to atony and to the fundus displacing upward. Reinforce that breastfeeding, if she is doing so, naturally stimulates oxytocin release and helps the uterus contract, which is a small but genuine benefit worth mentioning.
How this appears on the NCLEX
Expect a priority-action question describing a boggy fundus with no medication given yet, where the correct first response is fundal massage, not calling the provider or administering oxytocin. A common distractor is 'administer oxytocin' listed before 'massage the fundus'; massage comes first because it's the immediate, independent nursing action.
A second common scenario describes a fundus that firmed after massage but is boggy again on a later check, with the fundus displaced above the umbilicus. The expected answer is to assess for bladder distension and have the patient void or catheterize, not to repeat massage indefinitely or escalate straight to a second uterotonic.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our maternity and newborn practice questions are the closest set to what this page covers.
Common questions
What is the very first thing to do for a boggy fundus?
Massage the fundus immediately, supporting the lower uterine segment with your other hand. Medication is considered only if massage fails to restore and sustain firm tone.
Why does a full bladder cause a boggy fundus?
A distended bladder sits below the uterus and pushes it upward and often to one side, which interferes with the uterus's ability to contract effectively. Emptying the bladder frequently allows the fundus to firm on its own without further intervention.
Which uterotonic is contraindicated in a patient with hypertension?
Methylergonovine is contraindicated in hypertension because it can cause a significant rise in blood pressure. Oxytocin remains first-line regardless, and carboprost or misoprostol are alternatives if methylergonovine isn't appropriate.
How much blood loss defines postpartum hemorrhage after a vaginal delivery?
Current definitions generally use 1000mL or more of cumulative blood loss, or blood loss accompanied by signs of hypovolemia, regardless of delivery route. Some institutions still flag 500mL as the threshold for increased vigilance after a vaginal delivery, so follow local protocol for when to escalate.