# Evaluating Hemidiaphragmatic Paralysis With Prolonged Neural Blockade From an Interscalene Brachial Plexus Block

> **NCT04209504** · — · RECRUITING · sponsor: **Duke University** · enrollment: 60 (estimated)

## Conditions studied

- Shoulder Surgery
- Shoulder Pain
- Shoulder Injuries
- Shoulder Arthritis
- Shoulder Disease
- Rotator Cuff Tears
- Rotator Cuff Injuries
- Rotator Cuff Arthropathy of Left Shoulder
- Rotator Cuff Arthropathy of Right Shoulder
- Rotator Cuff Repair

## Interventions

- **DIAGNOSTIC_TEST:** Ultrasound
- **DRUG:** Ropivacaine
- **DRUG:** Bupivacaine
- **DEVICE:** MediPines AGM100 Advanced Respiratory Monitoring System

## Key facts

- **NCT ID:** NCT04209504
- **Lead sponsor:** Duke University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2021-10-12
- **Primary completion:** 2026-08-31
- **Final completion:** 2026-08-31
- **Target enrollment:** 60 (ESTIMATED)
- **Last updated:** 2025-10-01


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04209504

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04209504, "Evaluating Hemidiaphragmatic Paralysis With Prolonged Neural Blockade From an Interscalene Brachial Plexus Block". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04209504. Licensed CC0.

---

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