📌 NCLEX Topic: Amniotomy (Artificial Rupture of Membranes – AROM)

📌 NCLEX Topic: Amniotomy (Artificial Rupture of Membranes – AROM)

NCLEX Topic: Amniotomy

Definition:

Amniotomy is a procedure where a healthcare provider artificially ruptures the amniotic sac using a sterile hook-like instrument (Amnihook) to induce or augment labor.

Indications (When is Amniotomy Performed?)

  • To induce labor when the cervix is partially dilated and effaced.
  • To augment (speed up) labor in cases of hypotonic contractions (weak, ineffective contractions).
  • To allow placement of an internal fetal monitor (if needed for high-risk pregnancies).
  • To assess for meconium-stained amniotic fluid (possible fetal distress).

Contraindications (When NOT to Perform Amniotomy?)

  • Unengaged fetal head (risk of cord prolapse).
  • Placenta previa (placenta covering the cervix → can cause hemorrhage).
  • Active infection (e.g., herpes, chorioamnionitis).
  • Fetal distress (may worsen the condition).

Risks & Complications of Amniotomy

  • Umbilical Cord Prolapse: If the fetal head is not engaged, the cord can slip out, leading to fetal hypoxia.
  • Infection (Chorioamnionitis): The longer the membranes remain ruptured, the higher the risk. Monitor temperature & WBC count.
  • Fetal Distress: Sudden release of fluid may cause late decelerations due to cord compression.

Nursing Responsibilities Before, During, & After Amniotomy

🚨 Before the Procedure:

  • Ensure fetal head is engaged to prevent cord prolapse.
  • Assess fetal heart rate (FHR) to establish a baseline.
  • Explain the procedure to the client to reduce anxiety.

🚨 During the Procedure:

  • Use sterile gloves and maintain an aseptic technique.
  • Assist with positioning (client in lithotomy or semi-Fowler’s).

🚨 After the Procedure:

  • Assess FHR immediately to detect signs of cord prolapse or distress.
  • Monitor maternal temperature every 2 hours for signs of infection.
  • Assess amniotic fluid characteristics:
    • Clear & odorless = Normal
    • Meconium-stained (green) = Possible fetal distress
    • Foul-smelling = Possible infection
  • Document time of rupture, fluid characteristics, and maternal/fetal response.

Additional Information:

  • Hypotonic contractions are short, irregular, and weak; amniotomy and oxytocin infusion may be treatment measures.
  • Amniotomy is performed if the fetus is at 0 or a plus station.
  • Amniotomy increases the risk of prolapsed cord and infection.
  • Monitor FHR before and after amniotomy.
  • Record time of amniotomy, FHR, and characteristics of the fluid.
  • Meconium-stained amniotic fluid may be associated with fetal distress.
  • Bloody amniotic fluid may indicate abruptio placentae or fetal trauma.
  • An unpleasant odor to amniotic fluid is associated with infection.
  • Polyhydramnios is associated with maternal diabetes and certain congenital disorders.
  • Oligohydramnios is associated with intrauterine growth restriction and congenital disorders.
  • Expect more variable decelerations after rupture of the membranes as a result of possible cord compression during contractions.
  • Limit client activity if prescribed.