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Updated: May 15, 2026

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
Published on: February 10, 2023
Lowering DVT-Related ED Visits via a Primary Care POCUS Pathway
William Hui1, Jo-Anne Suffoletto1, Steven Lin1
1Division of Primary Care and Population Health, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA.
A new primary care pathway using point-of-care ultrasound (POCUS) for deep vein thrombosis (DVT) diagnosis proved feasible and acceptable. This approach potentially reduced emergency department visits and associated costs, improving patient care.
Area of Science:
- Primary Care Medicine
- Diagnostic Imaging
- Quality Improvement Science
Background:
- Prompt diagnosis of lower extremity deep vein thrombosis (DVT) is crucial to prevent pulmonary embolism (PE).
- Point-of-care ultrasound (POCUS) is effective for DVT diagnosis in emergency departments (EDs), but its impact in primary care is less studied.
- This quality improvement (QI) project aimed to implement and evaluate a primary care DVT POCUS pathway to decrease reliance on ED visits.
Purpose of the Study:
- To establish and assess the feasibility and acceptability of a DVT POCUS pathway within a primary care setting.
- To evaluate the potential impact of this pathway on reducing emergency department utilization.
- To explore the cost-effectiveness of integrating DVT POCUS into primary care.
Main Methods:
- A POCUS fellowship-trained physician performed DVT evaluations and management for referred primary care patients over 14 months.
- Data collection included patient outcomes via chart review and clinician feedback through surveys.
- The study assessed the pathway's feasibility, acceptability, and potential to reduce ED visits.
Main Results:
- Eighty patients were evaluated, with 5% (4/80) testing positive for DVT.
- The pathway potentially averted 46% (37/80) of ED visits, estimating $85,100 in cost savings.
- Referring clinicians reported high satisfaction, with 98% agreeing the pathway improved safety, access, and reduced cognitive burden and ED referrals.
Conclusions:
- A primary care DVT POCUS pathway is a feasible and acceptable model for managing suspected DVTs.
- This integrated approach shows potential for cost savings and improved patient care by reducing ED visits.
- Further research is recommended to validate this model for broader implementation in primary care settings.
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