# Acute Bronchodilator Response of a Single Dose of Atrovent or Berotec on Top of Pharmacodynamic Steady State of Spiriva

> **NCT00274066** · PHASE3 · COMPLETED · sponsor: **Boehringer Ingelheim** · enrollment: 65 (—)

## Conditions studied

- Pulmonary Disease, Chronic Obstructive

## Interventions

- **DRUG:** Tiotropium + placebo
- **DRUG:** Tiotropium + ipratropium
- **DRUG:** Tiotropium + fenoterol

## Key facts

- **NCT ID:** NCT00274066
- **Lead sponsor:** Boehringer Ingelheim
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2002-10
- **Primary completion:** 2003-09
- **Final completion:** 2003-09
- **Target enrollment:** 65 (—)
- **Last updated:** 2013-11-01


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00274066

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00274066, "Acute Bronchodilator Response of a Single Dose of Atrovent or Berotec on Top of Pharmacodynamic Steady State of Spiriva". Retrieved via AI Analytics 2026-06-30 from https://api.ai-analytics.org/clinical/NCT00274066. Licensed CC0.

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