# Rib Microtia and the Erector Spinae Plane (ESP) Block

> **NCT03729427** · NA · WITHDRAWN · sponsor: **Stanford University**

## Conditions studied

- Microtia, Congenital
- Microtia
- Anesthesia, Local
- Anesthesia

## Interventions

- **PROCEDURE:** Erector Spinae Plane Block

## Key facts

- **NCT ID:** NCT03729427
- **Lead sponsor:** Stanford University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2025-11
- **Primary completion:** 2026-11
- **Final completion:** 2026-11
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** No participants were enrolled in the study due to numerous transitions of research staff and support since 2018.
- **Last updated:** 2025-05-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03729427

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03729427, "Rib Microtia and the Erector Spinae Plane (ESP) Block". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT03729427. Licensed CC0.

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