Balancing Anticoagulation Risks and Prosthetic Longevity in Young Female AVR Cohorts

Article Impact Level: HIGH
Data Quality: STRONG
Summary of  JACC https://doi.org/10.1016/j.jacc.2026.05.024 
Dr. Ruixin Lu  et al.

Points

Karolinska Institutet researchers analyzed national registry data from 251 women aged 18 to 40 who underwent aortic valve replacement surgery between the years 1997 and 2024.
Clinical treatment pathways were divided between 93 patients who received a biological tissue valve and 158 patients who were managed with a durable mechanical valve prosthesis.
Long-term tracking revealed that approximately half of the bioprosthetic valve recipients achieved successful childbirth compared to fewer than ten percent of women with mechanical alternatives.
Cardiovascular safety profiles during gestation and delivery were generally positive for the biological cohort despite their significantly higher long-term probability of requiring a secondary structural heart reoperation.
Investigators emphasized that clinicians must utilize these comparative registry data to guide shared decision-making processes tailored entirely to the individual patient’s personal family planning goals.

Summary

Initiated to optimize shared decision-making for young females requiring surgical intervention, this registry-based study evaluated pregnancy outcomes and reoperation rates in women of childbearing age undergoing aortic valve replacement (AVR). Selecting a prosthesis for this cohort requires balancing the structural durability of mechanical valves against the teratogenic and hemorrhagic risks of lifelong anticoagulation. The research sought to determine if bioprosthetic valves could offer favorable gestational safety profiles despite accelerated structural valve degeneration.

Utilizing Swedish national quality and health data registries, investigators conducted a longitudinal cohort study tracking 251 women aged 18 to 40 who underwent surgical AVR between 1997 and 2024. Within this study population, 93 women received a biological prosthesis and 158 received a mechanical valve. Long-term follow-up revealed distinct disparities in subsequent reproductive choices and success; approximately 50% of the biological valve cohort successfully achieved at least one childbirth, whereas fewer than 10% of women in the mechanical valve cohort reached successful delivery.

Cardiovascular outcomes during pregnancy were generally favorable among women with biological valves, establishing bioprostheses as a reasonable clinical strategy for patients planning a family. However, the data also emphasized that structural degradation inherent to biological tissue significantly increases the long-term risk of structural failure and subsequent reoperation. These findings suggest that while biological replacement optimizes immediate maternal-fetal outcomes, rigorous pre-surgical screening and lifetime planning are essential to mitigate the morbidity associated with anticipated re-interventions.

Link to the article: https://www.jacc.org/doi/10.1016/j.jacc.2026.05.024

References

Lu, R., Dalén, M., Dismorr, M., Glaser, N., & Sartipy, U. (2026). Aortic valve replacement in women of reproductive age. JACC, S0735109726066362. https://doi.org/10.1016/j.jacc.2026.05.024