# Surveillance and Treatment to Prevent Fetal Atrioventricular Block Likely to Occur Quickly (STOP BLOQ)

> **NCT04474223** · PHASE3 · RECRUITING · sponsor: **NYU Langone Health** · enrollment: 1300 (estimated)

## Conditions studied

- AVB - Atrioventricular Block
- Fetal AVB

## Interventions

- **DRUG:** Dexamethasone
- **DRUG:** IVIG

## Key facts

- **NCT ID:** NCT04474223
- **Lead sponsor:** NYU Langone Health
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2020-08-01
- **Primary completion:** 2028-12-31
- **Final completion:** 2029-06-30
- **Target enrollment:** 1300 (ESTIMATED)
- **Last updated:** 2026-04-06


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04474223

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04474223, "Surveillance and Treatment to Prevent Fetal Atrioventricular Block Likely to Occur Quickly (STOP BLOQ)". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT04474223. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*