What Happens If You Need Surgery During Pregnancy?
Between 1 in 50 and 1 in 200 pregnancies involve a non-obstetric surgery. Here is what your anesthesiologist wants you to know about how the team keeps you and your baby safe.
Thomas Lambert, MD··6 min read
This is one of those topics that quietly sits in the back of your mind but rarely gets discussed openly: what if you need surgery while you're pregnant? Not a C-section — that's planned for. But an appendix issue, or gallbladder pain that won't quit, or something else entirely unexpected.
It happens more often than most moms realize. Somewhere between 1 in 50 and 1 in 200 pregnancies involve a non-obstetric surgery. And as the doctor who would be managing your anesthesia if that situation came up, I want you to know: it's something we prepare for, and it's something we handle regularly.
How Common Is This?
Appendicitis and gallbladder surgery are currently the most common reasons for surgery during pregnancy. Neither is predictable, and neither means something went wrong with your pregnancy. It just means your body needed attention for something unrelated to the baby — and the medical team, including your anesthesiologist, handled it.
Other situations that occasionally require surgery during pregnancy include ovarian cysts, kidney stones, and certain types of trauma. None of these are common, but none are unusual enough that your care team would be caught off guard.
What Happens With Anesthesia
This is the part I can speak to directly, and it's worth addressing head-on: modern anesthetic medications have not reliably shown negative effects on fetal development in human studies, although the data continues to evolve. What we know is that anesthesia teams manage pregnant patients with a level of care that accounts for the baby at every step.
Here's what that looks like in practice:
Medication selection is adjusted. Your anesthesiologist chooses medications based on their safety profile during pregnancy, the trimester you're in, and the type of surgery being performed.
Monitoring is enhanced. In addition to standard monitoring (blood pressure, heart rate, oxygen levels), fetal heart rate monitoring is typically included when the baby is viable, so your team can watch both of you simultaneously.
Positioning is modified. After the first trimester, you're generally positioned to avoid compressing the major blood vessels that run behind the uterus. This is a well-established adjustment that protects blood flow to the baby.
Laparoscopic approaches are used when appropriate. Minimally invasive surgery — using small incisions and a camera rather than a large open incision — is generally considered an appropriate approach across all trimesters for many conditions.
The point is not that surgery during pregnancy is risk-free. Nothing in medicine is risk-free. The point is that your team has protocols specifically designed for this scenario, and your baby's wellbeing is factored into every decision before the procedure begins.
Why I'm Bringing This Up Now
I'm not trying to add to your list of things to worry about. I'm trying to remove something from it.
If this situation ever comes up — for you or someone you care about — I want you to have a foundation of understanding rather than a blank space filled with fear. Knowing that non-obstetric surgery happens, that modern anesthesia accounts for pregnancy, and that your care team has done this before can take the panic out of an already stressful situation.
You can't predict or prevent appendicitis. You can't schedule away a gallbladder flare. But you can know that if it happens, there's a team trained specifically for this — and an anesthesiologist who considers your baby's safety to be the first thing on the plan.
This content is general educational information about obstetric anesthesia. It is not medical advice and does not replace a conversation with your own doctor. Every birth is different. Talk to your healthcare team about what's right for your specific situation.
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Thomas Lambert, MD - Board-certified OB anesthesiologist writing an evergreen library for moms who want clear answers before delivery day.