NCLEX Review Guide: Premature Rupture of the Membranes (PROM)

Understanding PROM

• Premature Rupture of Membranes (PROM) occurs when the amniotic sac breaks before the onset of labor at term (≥37 weeks gestation).
• Preterm Premature Rupture of Membranes (PPROM) is membrane rupture before 37 weeks gestation, creating higher risk for complications.
• Prolonged rupture refers to membrane rupture >18 hours before delivery, increasing infection risk significantly.

Predisposing Factors

• Infections: Group B Strep, UTI, chorioamnionitis, and sexually transmitted infections weaken membrane integrity.
• Previous PROM history: Increases recurrence risk by 16-32% in subsequent pregnancies.
• Cervical insufficiency: Weak cervix cannot maintain membrane support, leading to early rupture.
• Polyhydramnios: Excessive amniotic fluid creates increased pressure on membranes.
• Smoking, substance abuse, and poor nutrition compromise membrane strength and healing capacity.

Clinical Manifestations

• Sudden gush or continuous leaking of clear, odorless fluid from the vagina is the primary symptom.
• Patient reports feeling "wet" constantly or needing to change pads frequently due to fluid leakage.
• Absence of urine odor helps differentiate from urinary incontinence, which is common in pregnancy.

Diagnostic Tests

1. Sterile speculum exam: Visualize pooling of fluid in posterior vaginal fornix
2. Nitrazine test: Amniotic fluid pH 7.0-7.5 turns paper blue (normal vaginal pH 4.5-6.0)
3. Ferning test: Dried amniotic fluid shows fern-like crystallization pattern under microscope
4. Ultrasound: Assess oligohydramnios (decreased amniotic fluid volume)

Maternal Complications

• Chorioamnionitis: Infection of amniotic membranes causing fever, tachycardia, uterine tenderness, and foul-smelling discharge.
• Endometritis: Postpartum uterine infection requiring immediate antibiotic therapy and close monitoring.
• Placental abruption risk increases due to decreased amniotic fluid volume and uterine compression.

Fetal/Neonatal Complications

• Preterm birth: Leading cause of neonatal morbidity and mortality in PPROM cases.
• Respiratory Distress Syndrome (RDS): Immature lungs lack surfactant production for adequate gas exchange.
• Cord prolapse: Emergency situation requiring immediate cesarean delivery to prevent fetal hypoxia.
• Oligohydramnios can cause pulmonary hypoplasia and limb deformities in severe, prolonged cases.

Immediate Interventions

1. Assess fetal well-being: Continuous fetal monitoring for heart rate patterns and variability
2. Monitor maternal vital signs: Temperature every 2-4 hours to detect early infection signs
3. Strict input/output: Monitor for signs of dehydration and maintain adequate hydration
4. Infection prevention: Minimize vaginal exams, maintain perineal hygiene, monitor for signs of infection

Ongoing Care

• Bed rest with bathroom privileges: Reduces risk of cord prolapse while maintaining circulation.
• Daily fetal movement counts: Educate mother to report decreased fetal activity immediately.
• Antibiotic prophylaxis: Group B Strep prophylaxis and broad-spectrum antibiotics as ordered.
• Corticosteroid administration for fetal lung maturity if delivery anticipated between 24-34 weeks gestation.