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Poster Session 3

Category: Clinical Obstetrics

Poster Session 3

(923) The THEA model: outcomes of an innovative prenatal care model incorporating home blood pressure monitoring

Thursday, February 12, 2026

10:30 AM - 12:00 PM

Coauthor(s)

AG

Anna S. Graseck, MD

Perelman School of Medicine, University of Pennsylvania
Philadelphia, Pennsylvania, United States
Lisa D. Levine, MD, MSCE (she/her/hers)

Associate Professor, Chair, Division of MFM.
Perelman School of Medicine, University of Pennsylvania
Philadelphia, Pennsylvania, United States

Submitting Author and Presenting Author(s)

Rebecca F. Hamm, MD, MSCE (she/her/hers)

Assistant Professor, Maternal Fetal Medicine
Perelman School of Medicine, University of Pennsylvania
Philadelphia, Pennsylvania, United States

Objective:
The traditional model of prenatal care requires frequent, in-person prenatal visits, but ACOG recently endorsed care models with decreased visit frequency and consideration of home blood pressure (BP) monitoring. There is concern, however, that important diagnoses, such as hypertensive disorders of pregnancy (HDP), may be missed with fewer in-person visits. We aimed to evaluate outcomes of an innovative prenatal care model (THEA) that incorporates reduced visits along with home BP monitoring compared to usual in-office care.

Study Design:
This retrospective cohort study compared deliveries over a 6-month period (7/2022-12/2022) at a site utilizing THEA for all patients to a second site in the same health system utilizing traditional prenatal care. Traditional care consists of visits every 4 weeks in the first two trimesters, every 2 weeks beginning at 28 weeks, and weekly at 36 weeks. In THEA, visits were every 4-6 weeks until 36-weeks, a reduction of 5 in-person visits. High-risk patients in THEA had an additional 3 telemedicine visits. BP was monitored weekly via text message. 1:1 propensity score matching balanced parameters associated with delivery site, including age, race, ethnicity, nulliparity, insurance, diabetes, smoking, and body mass index. Patients with chronic hypertension were excluded from analysis. The primary outcome was the rate of HDP. Secondary outcomes are shown in the Table.

Results:
After propensity score matching, 2,378 patients were included (1,189 in each group). The rate of HDP was 26.5% with no difference between groups overall or by severity (Table). Patients in the THEA model had fewer prenatal visits (8 IQR[7-10] vs 11 IQR[9-12], p< 0.001). There was no difference in GA at delivery overall or among patients with HDP (39 weeks in both groups, p=0.62). Additionally, there were no differences in severity of HDP, delivery mode, maternal morbidity, or fetal demise.

Conclusion:
An innovative prenatal care program that allowed for fewer in-person prenatal visits in conjunction with home BP monitoring did not impact HDP diagnosis, overall morbidity, or other perinatal outcomes.