Pregnant Woman Reviewing Prenatal Medical Reports

In France, as in much of the Western world, the prenatal ultrasound has grow a ritualized moment of anticipation—often framed by social expectations, familial curiosity, and the increasingly common practice of fetal sex determination. While medically intended to assess fetal anatomy, placental position, and gestational age, the revelation of biological sex during these scans has evolved into a cultural event, sometimes celebrated with gender-reveal parties and sometimes fraught with disappointment when parental projections do not align with reality. This intersection of clinical utility and psychosocial meaning raises important questions about how routine obstetric technology is interpreted, communicated, and experienced by expectant parents.

Key Clinical Takeaways:

• Prenatal ultrasounds are primarily diagnostic tools for assessing fetal development, not social instruments for gender prediction.
• Disclosure of fetal sex during ultrasound is a common practice in high-income countries but lacks universal medical indication and varies by provider and patient preference.
• When sex disclosure leads to emotional distress or gender disappointment, psychosocial support from perinatal mental health specialists can improve maternal well-being and parent-infant bonding.

The 20-week anatomy scan, typically performed between 18 and 22 weeks of gestation, remains the cornerstone of prenatal screening in France and across Europe. According to the French National College of Gynecologists and Obstetricians (CNGOF), over 95% of pregnant individuals in France undergo at least one ultrasound during pregnancy, with the mid-trimester scan being the most consistent point of contact with prenatal care. While the primary objectives include evaluating fetal cardiac structure, spinal integrity, and limb development, the determination of fetal sex is frequently requested by parents and routinely offered by sonographers—despite not being a mandatory component of the diagnostic protocol.

This practice reflects a broader trend in obstetric care where technological capability outpaces explicit clinical guidelines. A 2023 longitudinal study published in BJOG: An International Journal of Obstetrics and Gynaecology analyzed data from 12,400 pregnancies across five European countries and found that fetal sex was disclosed in 78% of second-trimester ultrasounds, with disclosure rates highest in France (85%) and lowest in Sweden (62%). The study, funded by a grant from the European Union’s Horizon 2020 program (Grant No. 847843), noted that while most parents reported feeling excitement or neutrality upon learning the sex, approximately 12% experienced transient disappointment—particularly when the sex did not match a strongly held preference, often shaped by cultural norms, family dynamics, or prior pregnancy experiences.

“The ultrasound room is not just a clinical space—it’s a site of meaning-making. When we disclose fetal sex, we’re not just sharing biological information. we’re entering a narrative that parents have often been constructing for months. Acknowledging the emotional weight of that moment is part of responsible obstetric communication.”

Biologically, fetal sex determination via ultrasound relies on the visualization of genital tubercle angulation or labioscrotal folds, with accuracy increasing significantly after 14 weeks and reaching over 95% by 20 weeks when performed by experienced sonographers. However, factors such as maternal body habitus, fetal position, and oligohydramnios can obscure visualization, leading to occasional errors—estimated at 1–2% in optimal conditions but rising in suboptimal scans. These inaccuracies, though rare, can contribute to psychosocial distress when parents have already begun gender-specific preparations.

The emotional impact of sex disclosure extends beyond momentary surprise. Research from the University of Cambridge’s Department of Psychiatry, published in The Lancet Regional Health – Europe in 2024, followed 3,200 first-time parents in the UK and France and found that persistent gender disappointment—defined as distress lasting beyond the neonatal period—was associated with a 1.8-fold increase in risk for antenatal anxiety and a 1.4-fold increase in risk for postpartum depressive symptoms, particularly when compounded by lack of social support or rigid gender expectations. The study, supported by the Wellcome Trust (Grant WT221553/Z/20/Z), emphasized that these outcomes were not inevitable but were mitigated when parents received empathic counseling and were encouraged to reflect on the origins of their expectations.

“We must distinguish between informing parents about fetal sex and reinforcing societal scripts about what that sex ‘means.’ The clinician’s role is to provide accurate information neutrally, while leaving space for the parents’ emotional response—without judgment or assumption.”

In response to these psychosocial dimensions, some maternity units in France have begun integrating brief psychosocial check-ins into the ultrasound appointment. At the Cochin Hospital in Paris, for example, sonographers are trained to ask open-ended questions such as, “What are you hoping to learn today?” or “How do you experience about finding out the sex?”—a practice inspired by the UK’s NHS fetal anomaly screening program. These conversations, though brief, create opportunities to identify patients who may benefit from referral to perinatal mental health services.

For expectant parents navigating complex emotions around fetal sex disclosure, accessing specialized support is increasingly recognized as a component of comprehensive prenatal care. Individuals experiencing persistent distress, anxiety, or conflict related to gender expectations may benefit from consultation with professionals trained in reproductive psychology. It’s recommended to seek care from vetted perinatal psychologists who specialize in the emotional transition to parenthood and can provide evidence-based coping strategies. Similarly, couples facing communication challenges or differing expectations about gender roles may find guidance through couples therapists with expertise in perinatal dynamics, helping to align expectations and strengthen relational resilience during pregnancy.

On a systemic level, there is growing advocacy for standardizing counseling practices around fetal sex disclosure. The French Society of Perinatal Medicine (SFMP) has proposed guidelines encouraging sonographers to confirm parental preference before disclosure, offer the option to delay or decline sex revelation, and document any expressed distress in the maternity record. Such measures aim to uphold patient autonomy while reducing the risk of unintended harm—a balance central to ethical obstetric practice.

As prenatal imaging continues to evolve with the integration of AI-assisted fetal biometry and 4D volumetric ultrasound, the psychosocial dimensions of these technologies must remain central to clinical training and quality improvement initiatives. The ultrasound is more than a window into fetal anatomy; it is a moment where medicine, identity, and expectation converge. Recognizing that complexity allows clinicians to not only inform but also support—turning a routine scan into an opportunity for compassionate, patient-centered care.

*Disclaimer: The information provided in this article is for educational and scientific communication purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider regarding any medical condition, diagnosis, or treatment plan.*