Spring is one of the busiest times of year for pediatric procedures. While infections happen year-round, the combination of winter illness buildup and the push to resolve lingering issues before summer often leads to an increase in surgeries, for things like ear tube placement and other common procedures. Before undergoing surgery, it’s critical to understand the safest options when it comes to anesthesia for children with MTHFR variants or underlying genetic or detox pathway differences.
This blog will help you have thoughtful, informed conversations with your child’s healthcare provider.
Anesthesia for Children With MTHFR Variants: What You Need to Know
Anesthesia is not one-size-fits-all.
For some children, especially those with methylation challenges, certain anesthetics can increase oxidative stress and place extra strain on the body’s ability to process and clear compounds.
One Anesthesia to Be Cautious With
Nitrous oxide is commonly used in pediatric procedures, but it’s not recommended for children with MTHFR abnormalities due to how it interferes with methylation pathways and vitamin B12 metabolism.
Many families aren’t told this unless they specifically ask.
Anesthesia for Children With MTHFR Variants: Safer Options to Discuss With Your Provider
These options are often better tolerated by children with MTHFR variants:
- Sevoflurane or isoflurane
- Precedex
- Ketamine
- Midazolam
- Opioid-based pain control (when appropriate)
Every child is different, so the key is having these conversations ahead of time with your provider instead of assuming the default approach is best.
What I Recommend Parents Do Before Surgery (Anesthesia for Children With MTHFR)
If your child is scheduled for ear tubes or any procedure requiring anesthesia:
- Tell the surgical team about any known MTHFR variants
- Ask what anesthesia will be used
- Request alternatives to nitrous oxide if applicable
These are simple steps, but they can make a meaningful difference.
Supporting Your Child’s System Before and After Anesthesia
Children with MTHFR variants often benefit from additional nutritional support, especially nutrients that support methylation and detox pathways.
Supplement Spotlight: HKHM MultiVite+
HKHM MultiVite+ is a great place to start. I’m heterozygous for MTHFR myself, and it took me years to find the right nutrient balance.
Our HKHM MultiVite+ includes active B vitamins (like 5-MTHF), along with trace minerals and antioxidant support to help the body process nutrients more efficiently and support healthy methylation.
This kind of foundational support can be especially helpful before and after procedures, when the body is under increased demand.
References:
- Shay H, Frumento RJ, Bastien A. General anesthesia and methylenetetrahydrofolate reductase deficiency. J Anesth. 2007;21(4):493-6. doi: 10.1007/s00540-007-0544-8. Epub 2007 Nov 1. PMID: 18008117.
- Orhon ZN, Koltka EN, Tüfekçi S, Buldağ Ç, Kısa A, Durakbaşa ÇU, Çelik M. Methylene Tetrahydrofolate Reductase Deficiency: the Hidden Risk in Paediatric Anaesthesia. Turk J Anaesthesiol Reanim. 2017 Oct;45(5):277-281. doi: 10.5152/TJAR.2017.68366. Epub 2017 Apr 27. PMID: 29114412; PMCID: PMC5656162.
- Santos CDSE, Grayson BE. Deficiência de metiltetrahidrofolato redutase e anestesia: importância de uma avaliação pré‐operatória detalhada [Methylenetetrahydrofolate Reductase deficiency and anesthesia: importance of a detailed preoperative evaluation]. Braz J Anesthesiol. 2019 Nov-Dec;69(6):637-638. doi: 10.1016/j.bjan.2019.05.002. Epub 2019 Nov 30. PMID: 31796301; PMCID: PMC9391906.
