Anaesthesia for fetal surgery is tailored to the mother, fetus, gestational age, access route, anticipated duration, need for fetal immobility or analgesia, and the possibility that the operation may need to stop or convert to emergency delivery.
Before the procedure
Preparation may include maternal medical and anaesthetic assessment, blood tests, blood-group and antibody review, venous-thromboembolism assessment, placental mapping, cervical evaluation, fetal imaging, discussion of antenatal corticosteroids when appropriate, consent for transfusion, and an explicit emergency plan.
The team should agree who can make each time-critical decision and whether obstetric, neonatal, paediatric surgical, blood-bank, or intensive-care resources must be immediately available.
During the procedure
Maternal monitoring is determined by the anaesthetic and procedure. Ultrasound may guide access and assess fetal position, heart activity, placental relationships, and complications. Fetal heart-rate monitoring is individualised according to gestation, feasibility, the type of operation, and whether an intervention based on the tracing would be possible and appropriate.
Maternal position, oxygenation, blood pressure, temperature, fluid balance, uterine tone, and analgesia can affect both maternal and fetal wellbeing.
After the procedure
Recovery includes maternal observations, pain and nausea control, bleeding and fluid-loss assessment, fetal assessment, and monitoring for contractions or infection. The duration of hospital observation varies.
The discharge plan should state activity and medicine instructions, the date and place of follow-up, who receives the procedure record, what symptoms require urgent review, and which hospital can manage an emergency related to the procedure.
Anaesthesia safety depends less on one drug choice than on a coordinated system prepared for maternal, fetal, obstetric, and neonatal change.
The essential distinctions
Access is only one part of fetal surgery.
Imaging and safety planning determine whether an access route and a proposed intervention are suitable.
- Map the placenta
Placental position and anatomy affect the possible route and the risk discussion.
- Define the target
The planned intervention must address a specific mechanism that can change an outcome.
- Protect the pregnancy
Membranes, maternal safety, preterm birth, rescue plans, and follow-up are part of the decision.