NCLEX Review Guide: Dystocia - Problems with Labor and Birth

Definition and Types

• Dystocia refers to difficult or abnormal labor that results in prolonged or arrested labor progression due to problems with the "4 P's": Power, Passenger, Passageway, or Psyche.
• Primary dystocia occurs when labor fails to progress from the onset, while secondary dystocia develops after normal labor progression has begun.

Hypertonic Uterine Dysfunction

• Occurs in latent phase of labor with frequent, painful contractions that are ineffective at dilating the cervix beyond 4 cm. Contractions have increased tone but poor coordination.
• Maternal exhaustion and fetal compromise may occur due to decreased uteroplacental blood flow during prolonged contractions.

Hypotonic Uterine Dysfunction

• Occurs in active phase of labor with weak, infrequent contractions that fail to dilate the cervix effectively after 4 cm dilation. Contractions lack sufficient intensity and frequency.
• Often associated with overdistended uterus (macrosomia, multiple gestation, polyhydramnios) or maternal exhaustion.

Fetal Malposition and Malpresentation

• Occiput posterior (OP) position causes prolonged labor and severe back pain as the fetal occiput rotates against the maternal sacrum during descent.
• Breech presentation occurs in 3-4% of pregnancies and increases risk for cord prolapse, birth trauma, and cesarean delivery.

Cephalopelvic Disproportion (CPD)

• Occurs when fetal head is too large relative to maternal pelvis, preventing engagement and descent through the birth canal.
• Signs include: lack of fetal descent, cervical edema, caput succedaneum, and molding despite adequate contractions.

Assessment Priorities

1. Monitor labor progress using Friedman's curve to identify deviations from normal labor patterns
2. Assess fetal well-being through continuous fetal monitoring, noting baseline FHR, variability, and presence of decelerations
3. Evaluate maternal vital signs, hydration status, and pain level throughout labor
4. Document cervical changes, fetal station, and contraction pattern every 2 hours in active labor

Therapeutic Interventions

• For hypotonic dysfunction: Oxytocin augmentation with careful monitoring of contraction strength and frequency, maintaining contractions every 2-3 minutes lasting 60-90 seconds.
• Position changes including hands-and-knees, side-lying, or birthing ball to facilitate fetal rotation and descent, especially beneficial for OP positions.
• Amnioinfusion may be used for oligohydramnios to cushion the umbilical cord and reduce variable decelerations.

Quick Check Questions

• ☐ Can you differentiate between hypertonic and hypotonic uterine dysfunction?
• ☐ Do you know the signs of cephalopelvic disproportion?
• ☐ Can you identify appropriate nursing interventions for each type of dystocia?
• ☐ Do you understand when cesarean delivery becomes necessary?