👤 By the CinnaRN Clinical Content Team🕐 Updated 2026-08-23🏷️ Physiological Adaptation🔖 Free to read, print, and share
Also known as: early labor · premature labor · labor before term · going into labor too early
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Use this quick-reference guide to spot, treat, and prevent Preterm Labor on the NCLEX. Keep it handy during review and on exam day!
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📒 The 1-minute cheat sheet
🩺 Signs
Regular contractions before 37 wks
Low backache, pelvic pressure
Cervical change, ↑ discharge
🧪 Meds
Tocolytics: mag sulfate, nifedipine
Betamethasone → fetal lung maturity
✅ Do
Hydration, left lateral, monitor FHR
Bed rest, identify/treat infection
🚩 Report
ROM, bleeding, fetal distress
📚 Preterm Labor — full study notes
The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.
Preterm labor is regular uterine contractions with cervical change occurring between 20 and 37 weeks gestation. It matters because preterm birth is a leading cause of newborn illness and death due to immature organ systems, especially the lungs. Risk factors include infection, multiple gestation, previous preterm birth, dehydration, and cervical insufficiency. The goal of care is to stop or delay labor long enough to give corticosteroids for fetal lung maturity.
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Key points
Understand these first
Regular contractions (often every 10 minutes or less) with cervical dilation or effacement before 37 weeks define preterm labor.
Symptoms include low backache, pelvic pressure, menstrual-like cramps, and increased or watery/bloody vaginal discharge.
Urinary tract and vaginal infections are common, treatable triggers.
A positive fetal fibronectin test or a shortened cervix on ultrasound predicts higher risk.
The greatest neonatal threat is respiratory distress syndrome from immature lungs and surfactant deficiency.
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Nursing priorities
What to do, in order
Monitor uterine contractions and fetal heart rate continuously and assess cervical change.
Promote bed rest, often in the left lateral position, and provide hydration as ordered.
Administer tocolytics as prescribed (such as magnesium sulfate, nifedipine, or terbutaline) to suppress contractions.
Give antenatal corticosteroids (betamethasone or dexamethasone) as ordered to accelerate fetal lung maturity.
Identify and treat underlying causes such as infection or dehydration.
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Red flags — report now
Escalate immediately
Report rupture of membranes, vaginal bleeding, or a sudden increase in contraction frequency or intensity.
Report fetal heart rate decelerations or decreased fetal movement.
Watch for terbutaline side effects (maternal tachycardia, chest pain) and hold and notify the provider if heart rate exceeds 120.
Report cervical change despite tocolysis, as delivery may be imminent.
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Labs & values
Numbers to know
Fetal fibronectin: negative result strongly predicts no delivery within 1-2 weeks
Urinalysis and group B strep culture to identify infection
Magnesium level if used as a tocolytic (therapeutic 4-7 mEq/L)
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Patient teaching
What patients must know
Recognize warning signs: regular cramping, low back pain, pelvic pressure, or fluid leaking, and seek care.
Empty your bladder, drink fluids, and rest on your side if you feel contractions starting.
Take the full course of any prescribed antibiotics and keep follow-up appointments.
❓ Preterm Labor: NCLEX FAQs
What are the priority nursing interventions for Preterm Labor?
Monitor uterine contractions and fetal heart rate continuously and assess cervical change. Promote bed rest, often in the left lateral position, and provide hydration as ordered. Administer tocolytics as prescribed (such as magnesium sulfate, nifedipine, or terbutaline) to suppress contractions. Give antenatal corticosteroids (betamethasone or dexamethasone) as ordered to accelerate fetal lung maturity.
What are the warning signs of Preterm Labor a nurse must report?
Report rupture of membranes, vaginal bleeding, or a sudden increase in contraction frequency or intensity. Report fetal heart rate decelerations or decreased fetal movement. Watch for terbutaline side effects (maternal tachycardia, chest pain) and hold and notify the provider if heart rate exceeds 120. Report cervical change despite tocolysis, as delivery may be imminent.
What do I need to know about Preterm Labor for the NCLEX?
Regular contractions (often every 10 minutes or less) with cervical dilation or effacement before 37 weeks define preterm labor. Symptoms include low backache, pelvic pressure, menstrual-like cramps, and increased or watery/bloody vaginal discharge. Urinary tract and vaginal infections are common, treatable triggers. A positive fetal fibronectin test or a shortened cervix on ultrasound predicts higher risk.
What patient teaching is important for Preterm Labor?
Recognize warning signs: regular cramping, low back pain, pelvic pressure, or fluid leaking, and seek care. Empty your bladder, drink fluids, and rest on your side if you feel contractions starting. Take the full course of any prescribed antibiotics and keep follow-up appointments.
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Quick Tip
Regular contractions (often every 10 minutes or less) with cervical dilation or effacement before 37 weeks define preterm labor.