Prolonged Labor

Overview

Prolonged labor, sometimes called failure to progress, is labor that takes longer than expected. Labor is divided into stages: the cervix opening and thinning, the pushing and delivery of the baby, and the delivery of the placenta. When the cervix dilates too slowly or the baby descends too slowly through the birth canal, labor is considered prolonged.

What counts as too long depends on whether it is a first birth, whether the cervix is dilating or the baby is descending, and other factors, so the obstetric team monitors progress against expected timelines. Prolonged labor is fairly common, especially in first pregnancies. Most cases are managed successfully, but slow progress can sometimes signal a problem that needs intervention to keep mother and baby safe.

Symptoms

Prolonged labor is identified mainly through monitoring during childbirth rather than by symptoms alone. Signs and experiences may include:

• Labor that continues for many hours without the cervix opening as expected
• Contractions that are weak, irregular, or spaced too far apart
• The baby not moving down the birth canal despite pushing
• Maternal exhaustion and frustration

The care team tracks cervical dilation, the baby's position and descent, the strength of contractions, and the baby's heart rate to recognize when labor is not progressing normally.

Causes

Prolonged labor can result from problems with the contractions, the baby, the birth canal, or a combination, often summarized as the powers, the passenger, and the passage:

• Weak contractions (powers): Contractions that are not strong, frequent, or coordinated enough to open the cervix and move the baby.
• The baby (passenger): A large baby, or a baby in an awkward position such as facing the wrong way.
• The birth canal (passage): A pelvis shape or size that makes passage difficult.
• Other factors: Epidural anesthesia, a full bladder, or maternal exhaustion can slow labor.

Risk Factors

• First pregnancy
• A large baby or carrying more than one baby
• An unfavorable position of the baby
• Early epidural pain relief in some cases
• Maternal exhaustion, dehydration, or stress
• Previous prolonged labor

Diagnosis

Prolonged labor is diagnosed by the obstetric team during labor by tracking progress over time:

• Cervical examinations: To measure how the cervix is dilating and thinning.
• Assessment of descent and position: To see how far the baby has moved and which way it is facing.
• Monitoring contractions: To judge their strength and frequency.
• Fetal heart rate monitoring: To check the baby's wellbeing throughout.

Comparing progress with expected timelines helps the team decide whether labor is prolonged and whether intervention is needed.

Treatment

Management depends on the cause and on how mother and baby are doing:

• Supportive measures: Changing position, walking, staying hydrated, emptying the bladder, and rest.
• Strengthening contractions: Medication such as oxytocin to make contractions stronger and more regular, or breaking the waters.
• Assisted delivery: Using forceps or a vacuum to help deliver the baby when appropriate during pushing.
• Cesarean section: Recommended when labor is not progressing safely or there are signs the baby or mother is at risk.

The care team chooses the safest approach for each situation and continuously monitors both mother and baby.

Prevention

• Prolonged labor cannot always be prevented, but staying mobile and changing positions may help
• Keeping hydrated and conserving energy during early labor
• Good prenatal care to identify factors such as a large baby
• Continuous support during labor, which is linked to smoother progress
• Discussing a birth plan with your care team in advance

When to See a Doctor

Labor is managed by your maternity care team, who monitor progress closely. During labor, tell your team right away if you feel reduced or absent baby movements, have heavy bleeding, severe constant pain between contractions, or feel very unwell. If you are at home in early labor, contact your provider or maternity unit for guidance on when to come in and seek urgent care for bleeding, leaking fluid with a green or foul color, or concern about the baby's movements.

Related Topics

Frequently Asked Questions

References

1. American College of Obstetricians and Gynecologists (ACOG). Labor and delivery.
2. MedlinePlus, U.S. National Library of Medicine. Childbirth.
3. Mayo Clinic. Labor and delivery, postpartum care.
4. World Health Organization (WHO). Intrapartum care for a positive childbirth experience.