# Drug Concentration and Volume on Adequate Labor Analgesia With PIEB

> **NCT03553576** · PHASE4 · TERMINATED · sponsor: **Northwestern University** · enrollment: 146 (actual)

## Conditions studied

- Pain
- Anesthesia
- Labor Pain

## Interventions

- **DRUG:** Low volume bolus
- **DRUG:** High volume bolus

## Key facts

- **NCT ID:** NCT03553576
- **Lead sponsor:** Northwestern University
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2020-01-21
- **Primary completion:** 2023-05-31
- **Final completion:** 2023-06-01
- **Target enrollment:** 146 (ACTUAL)
- **Why stopped:** Lack of continued funding
- **Last updated:** 2025-05-21


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03553576

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03553576, "Drug Concentration and Volume on Adequate Labor Analgesia With PIEB". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT03553576. Licensed CC0.

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