# The Minimal Effective Volume (MEV90) of Ropivacaine 0.75% for Ultrasound-guided Transmuscular Quadratus Lumborum Block

> **NCT04196270** · PHASE4 · UNKNOWN · sponsor: **Zealand University Hospital** · enrollment: 40 (estimated)

## Conditions studied

- Percutaneous Nephrolithotomy

## Interventions

- **DRUG:** Ropivacaine injection

## Key facts

- **NCT ID:** NCT04196270
- **Lead sponsor:** Zealand University Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-01-05
- **Primary completion:** 2020-10-01
- **Final completion:** 2020-11-01
- **Target enrollment:** 40 (ESTIMATED)
- **Last updated:** 2019-12-16


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04196270

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04196270, "The Minimal Effective Volume (MEV90) of Ropivacaine 0.75% for Ultrasound-guided Transmuscular Quadratus Lumborum Block". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04196270. Licensed CC0.

---

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