FHR Deceleration Comparison: Early vs Late vs Variable — Shape, Cause, Intervention
The NCLEX shows you a fetal heart rate tracing and asks what to do next. Picking the wrong deceleration type means calling a benign head-compression pattern ominous — or worse, ignoring uteroplacental insufficiency that's starving the fetus of oxygen. Shape, timing, and cause each point to a different intervention.
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Practice 34 NCLEX-style questions
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- Fetal head compression against cervix
- ★Uteroplacental insufficiency then ↓ O₂
- ★Umbilical cord compression
- Gradual U
- Mirrors the contraction exactly
- Onset to nadir ≥ 30 sec
- Gradual U
- Nadir AFTER contraction peak
- Recovers after contraction ends
- Onset to nadir ≥ 30 sec
- Abrupt V/W
- Variable timing with contractions
- Onset to nadir < 30 sec
- Benign
- Normal physiologic response
- OMINOUS — fetal hypoxemia
- Concerning if recurrent or ↓ variability
- No intervention needed
- ★Left lateral to ↑ placental flow
- IV fluid bolus
- O₂ via face mask
- STOP oxytocin immediately
- Change position to relieve cord
- Amnioinfusion may be ordered
- Document; routine care
- Notify immediately
- Prep for possible cesarean
- Notify if recurrent or slow return
- Fetal head engagement/descent
- Preeclampsia, post-dates, abruption
- Maternal hypotension (epidural)
- Oligohydramnios
- Cord prolapse
Early Decelerations
- Fetal head compression against cervix
Late Decelerations
- ★Uteroplacental insufficiency then ↓ O₂
Early Decelerations
- Gradual U
- Mirrors the contraction exactly
- Onset to nadir ≥ 30 sec
Late Decelerations
- Gradual U
- Nadir AFTER contraction peak
- Recovers after contraction ends
- Onset to nadir ≥ 30 sec
Early Decelerations
- Benign
- Normal physiologic response
Late Decelerations
- OMINOUS — fetal hypoxemia
Early Decelerations
- No intervention needed
Late Decelerations
- ★Left lateral to ↑ placental flow
- IV fluid bolus
- O₂ via face mask
- STOP oxytocin immediately
Early Decelerations
- Document; routine care
Late Decelerations
- Notify immediately
- Prep for possible cesarean
Early Decelerations
- Fetal head engagement/descent
Late Decelerations
- Preeclampsia, post-dates, abruption
- Maternal hypotension (epidural)
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Early = Head = benign. Late = Placenta = ominous, stop pit. Variable = Cord = reposition.
Component Topics
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Go further
- TopicFHR Accelerations & Early DecelerationsAccelerations and early decelerations both signal a reassuring fetal status — but only if you can distinguish them from the deceleration patterns that demand immediate action.
- TopicFHR Late DecelerationsYou see late decelerations on the monitor. The next 60 seconds are about what you do — and the order you do it in determines whether this ends in recovery or an emergency cesarean.
- GuideATI Maternal Newborn Proctored Exam (CMS): What’s on It and How to StudyWhat the ATI Maternal Newborn proctored exam covers, from antepartum to the newborn, the level you need, and a ready-made study plan.
- Specialty planWhat New-Grad Labor and Delivery Nurses Need to KnowA labor-focused plan for fetal monitoring, labor progression, induction, pain support, hypertensive disorders, hemorrhage, and time-critical obstetric emergencies.