Advanced Maternal Age (The 'Golden' Age)

Advanced Maternal Age (AMA) is typically defined as age 35 or older at the time of delivery. The primary medical consideration is that as eggs age, they are more likely to have errors in chromosomal division (leading to conditions like Down Syndrome). Additionally, the body's vascular system may be slightly less resilient than in a woman's 20s, making it more prone to gestational hypertension and diabetes.

Pregnancy over 35/40 is associated with a higher incidence of:

• Chromosomal Aneuploidy: Such as Trisomy 21 (Down Syndrome), 18, and 13.
• Gestational Diabetes: Increased risk of insulin resistance.
• Pre-eclampsia: Higher baseline risk for blood pressure issues.
• Fetal Growth Restriction: Sometimes related to placental efficiency over time.
• Multiple Pregnancies: Women in their late 30s are actually more likely to release more than one egg naturally, or may be using assisted reproductive technology (IVF).

Prenatal screening and diagnostic options should be offered according to informed choice rather than age alone:

1. NIPT (Non-Invasive Prenatal Testing): A high-performance screening option from 10 completed weeks. It is not diagnostic, and performance varies by condition and laboratory.
2. Detailed Early Anatomy Scan: A thorough check at 12–13 weeks for physical markers and structural concerns.
3. Uterine Artery Doppler: Part of first-trimester assessment for placental function and pre-eclampsia risk when clinically appropriate.
4. Diagnostic testing: CVS or amniocentesis may be chosen after counselling when diagnostic information is wanted.

Our management plan is focused on prevention and surveillance:

• Proactive Screening: Offering NIPT early (from 10 weeks) to provide peace of mind.
• Low-dose Aspirin: We often recommend aspirin for women over 40 to significantly reduce the risk of pre-eclampsia.
• Growth Surveillance: More frequent scans in the third trimester to ensure the placenta is supporting the baby adequately.
• Timed Delivery: For women over 40, we often recommend induction of labor at 39 weeks to reduce the minor but real risk of stillbirth that increases at the very end of pregnancy.

Through advanced care, the outcomes are overwhelmingly positive:

• Healthy Births: With modern screening, most chromosomal issues are identified early, and maternal complications are managed before they become severe.
• Parental Readiness: Women in this age group often have high levels of health literacy and follow-up, which contributes significantly to safe outcomes.
• The Future: Having a baby after 35 does not necessarily mean future pregnancies will be high-risk, though age-related risks continue to increase gradually.

If you are 35 or older and planning a pregnancy, or if you have just found out you are pregnant, you should seek a consultation with a fetal medicine specialist.

Dr. Leanne Bricker and our team provide the expert, nuanced care required for advanced maternal age. We focus on the data that matters most—your individual health markers and the health of your baby—providing a supportive and expert environment for your 'Golden' pregnancy.