# A Study to Evaluate the Safety of Withholding Anticoagulation in Patients With Subsegmental PE Who Have a Negative Serial Bilateral Lower Extremity Ultrasound

> **NCT01455818** · — · COMPLETED · sponsor: **Ottawa Hospital Research Institute** · enrollment: 292 (actual)

## Conditions studied

- Subsegmental (Single or Multiple) Pulmonary Embolism

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01455818
- **Lead sponsor:** Ottawa Hospital Research Institute
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2011-03
- **Primary completion:** 2021-03
- **Final completion:** 2021-05
- **Target enrollment:** 292 (ACTUAL)
- **Last updated:** 2021-05-28

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01455818

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01455818, "A Study to Evaluate the Safety of Withholding Anticoagulation in Patients With Subsegmental PE Who Have a Negative Serial Bilateral Lower Extremity Ultrasound". Retrieved via AI Analytics 2026-06-04 from https://api.ai-analytics.org/clinical/NCT01455818. Licensed CC0.

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