Evisceration

Understanding Evisceration in Modern Obstetrics

Evisceration is a rare and extreme destructive operation performed during prolonged obstructed labor when the fetus is already dead, severely malformed, or hydrocephalic, and a live birth via Caesarean section carries an unacceptably high risk of maternal death, usually from uterine rupture or severe sepsis. In contemporary Nigerian clinical practice, the procedure is virtually obsolete due to the widespread availability of emergency obstetric care, routine antenatal ultrasound scanning, and primary Caesarean section. When historic or resource-constrained settings demand it, the primary objective is to reduce the volume of the fetal trunk or thorax so it can pass through the birth canal, thereby sparing the maternal tissues from further destructive pressure.

Clinical Indications and Prerequisites

Before any destructive operation is considered, strict criteria must be met to ensure the safety of the mother.

• Fetal Demise: The fetus must be confirmed dead by auscultation and ultrasound, as these procedures are never performed on a living baby.
• Obstructed Labor: The presenting part is impacted, and further attempts at a safe Caesarean section pose grave danger to an exhausted, infected mother, often complicated by a thinned-out lower uterine segment or Bandl's ring.
• Pelvic Capacity: The maternal pelvis must be large enough to allow the reduced carcass to pass once bulk-reducing steps are completed.
• Informed Consent: Clear explanation and consent must be obtained from the family, acknowledging the loss of the baby and the maternal health goals.

Surgical Instruments and Anatomical Preparation

Performing an evisceration requires specialized, sturdy obstetric instruments combined with strict aseptic technique. Midwives and doctors must prepare the birth canal carefully.

• Perforator: Used to create an initial opening into the fetal body cavity, typically the thorax or abdomen.
• Blunt and Sharp Crochets: Used for traction and extracting fetal parts.
• Vulsellum or Strong Forceps: Used to grasp fetal organs or tissues securely.
• Sims Speculum and Retractors: To visualize the operative field adequately under good lighting.
• Antiseptic Wash: Thorough vaginal and perineal cleansing to minimize ascending infection in an already compromised genital tract.

Step-by-Step Surgical Technique

The procedure requires patience, steady hands, and clear anatomical knowledge. First, ensure the bladder is emptied completely using a catheter. Access the exposed fetal part, which is usually the chest or abdomen in cases of transverse lie or impacted shoulder presentation. Make an opening through the fetal chest wall or abdominal wall using the perforator. Introduce finger or forceps guidance to hook and extract the internal organs, such as the liver, lungs, and intestines, piecemeal. Once the thoracic and abdominal cavities are emptied of their visceral contents, the collapsed fetal shell loses its rigidity. Traction is then applied to deliver the remaining body parts safely through the pelvis.

Intraoperative Risks and Maternal Complications

Destructive operations carry high risks of physical trauma to the mother due to the blind nature of intrauterine manipulations and the fragile state of maternal tissues.

• Uterine Rupture: The lower uterine segment is already overstretched and vulnerable; sharp instruments can easily perforate the uterus.
• Fistula Formation: Pressure necrosis from prolonged labor combined with instrumental trauma frequently results in vesicovaginal or rectovaginal fistulae.
• Hemorrhage: Uterine atony from exhaustion and traumatic lacerations can lead to massive postpartum hemorrhage.
• Severe Sepsis: Microbial invasion during prolonged labor is exacerbated by intrauterine manipulation.

Postoperative Care and Psychological Support

After a successful evisceration, the midwife must manage both the physical recovery and the profound emotional trauma of the mother and her family. Closely monitor vital signs, vaginal bleeding, and urine output to catch hemorrhage and bladder injury early. Administer prescribed broad-spectrum antibiotics due to the high risk of ascending infection from prolonged labor. Provide a quiet, private recovery space where grief counseling can take place. Acknowledge the loss of the baby with deep empathy, ensuring the mother receives compassionate bereavement support before discharge.