30-Second Takeaway
- Health Belief Model education for labour companions improves maternal satisfaction and reduces newborn complications.
- Hyperemesis gravidarum is associated with modestly increased risk of several adverse pregnancy outcomes.
- Oral probiotics may increase pregnancy and live-birth rates in infertility, but evidence quality is low.
Week ending June 20, 2026
Five recent papers affecting obstetrics and reproductive care: companionship education, device trial equity, hyperemesis risks, probiotics for infertility, and progesterone at embryo transfer
HBM-based companion education increased satisfaction and reduced newborn complications
In a 12-cluster randomized trial in Addis Ababa among primigravidae dyads, five HBM-based sessions for chosen labour companions increased maternal satisfaction (β = 21.14, p < 0.001). The intervention reduced prolonged labour >8 hours (aOR 0.82, WCB 95% CI 0.74–0.91) and newborn complications (4.5% vs 11.26%; aOR 0.93, 95% CI 0.90–0.97). Spontaneous vaginal deliveries were descriptively higher and cesarean pathways lower in the intervention arm, but modal differences were not statistically significant. Economic modeling showed the intervention was highly cost-effective with >90% probability at local willingness-to-pay thresholds.
Pivotal device trials rarely integrate equity analyses or benchmarking
This scoping review of 74 pivotal medical device investigations found age and sex almost always reported but subgroup analyses were uncommon (age 18.9%, sex 14.8%). Race/ethnicity appeared in 35.1% of studies and PROGRESS-Plus variables in 9.5%, with explicit EDI framing present in only 2.7% of trials. No study applied CONSORT-Equity or performed population benchmarking, limiting assessment of external validity and representativeness. Researchers and regulators should expect limited equity-focused design, recruitment, and analytic detail when interpreting device trial evidence.
Hyperemesis gravidarum linked to higher risks of multiple adverse pregnancy outcomes
In 2.5 million singleton births in California (2007–2011), 53,681 pregnancies with HG (2.2%) had higher adjusted risks of preeclampsia (aRR 1.18) and gestational hypertension (aRR 1.15). HG was also associated with preterm birth (aRR 1.25), small-for-gestational-age (aRR 1.19), placental abruption (aRR 1.14), and anemia (aRR 1.37). Risks were larger when the first HG hospitalization occurred in the second trimester (for example, preeclampsia aRR 1.41). These associations persisted after adjustment and across most strata evaluated in the study.
References
Numbered in order of appearance. Click any reference to view details.
Additional Reads
Optional additional studies from this edition.