Threatened preterm delivery — MSF Essential obstetric and newborn care — Médecins Sans Frontières 2026

MSFClinical guideline (chapter)Current edition

From Essential obstetric and newborn care › Chapter 4: Pathologies during pregnancy and pregnancy-related disorders · Médecins Sans Frontières, Current online edition, 2026

MSF guidance on managing threatened preterm labour before 37 weeks for clinicians in resource-limited settings.

In one sentenceFor threatened preterm delivery before 37 weeks, allow delivery if >34 weeks with ruptured membranes or labour advanced; otherwise use oral nifedipine tocolysis and dexamethasone 6 mg IM 12-hourly between 26–34 weeks for lung maturation.

Issuer: Médecins Sans Frontières
Edition: Current online edition, 2026
Audience: Clinicians providing obstetric care in resource-limited settings
Evidence: Expert consensus based on MSF field experience
Reviewed: 23 Oct 2026 · GMJ

Read the original on MSF Whole guideline (PDF)

Summary by GMJ Guidelines Desk•Reviewed by Prof. Giorgi Pkhakadze, MD, MPH, PhD•Record updated 23 Oct 2026•Next check Apr 2027

What this guideline says

GMJ summary

This section of the MSF Essential Obstetric and Newborn Care guideline addresses threatened preterm delivery, defined as regular uterine contractions and cervical changes before 37 weeks’ last menstrual period (LMP). It outlines risk factors including preterm rupture of membranes, maternal infection, pregnancy-related disorders, multiple pregnancy, cervical insufficiency, age under 18 years, and malnutrition.

Management centres on identifying and treating maternal infections, determining when to allow delivery versus attempting to stop contractions with tocolytic therapy. Key decision points include allowing delivery after 34 weeks with ruptured membranes, when labour is too advanced (cervix effaced, 5 cm dilation), or when the mother’s life is threatened. For gestations between 26–34 weeks, the guideline emphasises corticosteroid administration for foetal lung maturation alongside tocolysis to postpone delivery for 48 hours.

Specific tocolytic therapy uses oral nifedipine (never sublingual): 10 mg every 15 minutes up to 40 mg maximum, then 20 mg every 6 hours for 48 hours. Dexamethasone 6 mg intramuscularly every 12 hours for 48 hours accelerates lung maturation between 26–34 weeks. The guideline stresses avoiding aggressive interventions during preterm delivery whilst preventing prolonged labour, with specific precautions for neonatal hypothermia and hypoglycaemia.

Key points

For clinicians — doses and thresholds as stated in the guideline

Threatened preterm delivery is defined as regular uterine contractions and cervical changes before 37 weeks LMP
Allow delivery if >34 weeks with ruptured membranes, labour too advanced (cervix effaced, 5 cm dilation), maternal life threatened, or foetal death confirmed
Tocolytic therapy with nifedipine PO (immediate release): 10 mg every 15 minutes if contractions persist (maximum 4 doses or 40 mg), then 20 mg every 6 hours for 48 hours; never give sublingually due to risk of placental hypoperfusion and foetal death
Administer dexamethasone 6 mg IM every 12 hours for 48 hours between 26–34 weeks LMP for foetal lung maturation; start antibiotics before dexamethasone if severe maternal infection present
Always perform urinalysis (dipstick test) and rapid malaria test in endemic areas to identify treatable maternal infections
Vacuum extraction is contraindicated before 34 weeks LMP; use forceps if instrumental extraction required
Prepare for neonatal resuscitation and closely monitor neonate's temperature (hypothermia risk) and blood glucose (hypoglycaemia risk)
Prevention includes treating infections and other disorders during pregnancy, and rest for women with predisposing factors

Management algorithm for threatened preterm delivery

Table extracted from the guideline

Clinical scenario	Gestational age	Management
Ruptured membranes	>34 weeks LMP	Allow delivery
Advanced labour (cervix effaced, 5 cm dilation)	Any gestational age	Allow delivery
Maternal life threatened	Any gestational age	Allow delivery
Confirmed foetal death	Any gestational age	Allow delivery
Mild contractions, no cervical changes	<37 weeks LMP	Strict bed rest
Active contractions with cervical changes	26–34 weeks LMP	Tocolysis + corticosteroids
Active contractions with cervical changes	<26 weeks or >34 weeks	Tocolysis only (no corticosteroids)

Source: Médecins Sans Frontières, Threatened preterm delivery — MSF Essential obstetric and newborn care. Reproduced in summary form.

From the guideline

Verbatim

“Never administer sublingually (risk of placental hypoperfusion and foetal death); always use the oral route.”

— Médecins Sans Frontières, Threatened preterm delivery — MSF Essential obstetric and newborn care, Section 4.10.2 Management (2026)

Editor’s perspective

Why this matters for Georgia and the region

Prof. Giorgi Pkhakadze, MD, MPH, PhD

Editor-in-Chief, Georgian Medical Journal · Chair, Public Health Institute of Georgia · WHO consultant, health and migration

As Editor-in-Chief of the Georgian Medical Journal and Chair of the Public Health Institute, I recognise that preterm birth is a leading cause of neonatal mortality in Georgia and throughout the South Caucasus, making this MSF guidance immediately relevant to our maternal health services. The most critical recommendation for our clinicians is the explicit prohibition of sublingual nifedipine, which I have observed being used in some peripheral facilities due to confusion with acute hypertension protocols; the oral route with the specified dosing schedule (10 mg every 15 minutes, maximum 40 mg, then 20 mg every 6 hours) must be strictly followed to prevent placental hypoperfusion. The realistic implementation challenge in Georgia will be ensuring dexamethasone availability in all maternity units capable of managing deliveries between 26–34 weeks, training staff on the 48-hour tocolysis window for corticosteroid administration, and establishing clear referral criteria for facilities without neonatal resuscitation capacity. The guidance's emphasis on infection screening aligns well with our existing antenatal protocols, though national adaptation should specify which infections are locally relevant rather than malaria testing.

ORCID 0000-0001-7609-4515 · Perspective written for the GMJ Guidelines Library, 23 Oct 2026

Applicability

Georgia and the South Caucasus

This guidance is directly applicable to maternal health services across Georgia and the South Caucasus, where preterm birth remains a significant contributor to neonatal mortality. National programmes should ensure availability of immediate-release oral nifedipine tablets and dexamethasone in all maternity units, and verify that sublingual nifedipine administration is explicitly prohibited in protocols due to the risk of placental hypoperfusion. The emphasis on infection screening aligns with Georgia’s existing antenatal care protocols, though malaria testing is not relevant for the South Caucasus. Implementation requires training on gestational age assessment by LMP and clinical examination, clear protocols for when to transfer versus when to allow delivery at peripheral facilities, and neonatal resuscitation capacity for all units managing deliveries before 37 weeks. The guidance’s focus on avoiding aggressive interventions whilst preventing prolonged labour is particularly relevant for settings where caesarean section access may be limited.

Questions this guideline answers

Quick answers

Why must nifedipine never be given sublingually for threatened preterm labour?

Sublingual nifedipine carries a risk of placental hypoperfusion and foetal death. Always use the oral route with immediate-release tablets: 10 mg every 15 minutes up to 40 mg maximum, then 20 mg every 6 hours for 48 hours.

At what gestational age should corticosteroids be given for foetal lung maturation?

Dexamethasone 6 mg IM every 12 hours for 48 hours should be given after 26 weeks LMP and before 34 weeks LMP. If severe maternal infection is present, start antibiotic therapy before administering dexamethasone.

When should I allow delivery rather than attempting tocolysis?

Allow delivery if gestational age >34 weeks with ruptured membranes, labour too advanced (cervix effaced, 5 cm dilation) at any gestation, maternal life threatened at any gestation, or foetal death confirmed.

Why is vacuum extraction contraindicated before 34 weeks?

The preterm infant's head is more vulnerable to trauma from vacuum extraction. If instrumental delivery is required before 34 weeks LMP, use forceps instead. Delivery is usually rapid and often breech; consider episiotomy even if the foetus is small.

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Threatened preterm delivery — MSF Essential obstetric and newborn care

What this guideline says

Key points

Management algorithm for threatened preterm delivery

From the guideline