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Updated: Dec 29, 2025

A Porcine Model of Acute Autologous Pulmonary Embolism
Published on: September 6, 2024
Anticoagulant treatment for subsegmental pulmonary embolism
Hugo Hb Yoo1, Vania Santos Nunes-Nogueira1, Paulo J Fortes Villas Boas1
1Botucatu Medical School, São Paulo State University-UNESP, Department of Internal Medicine, Botucatu, São Paulo, Brazil, 18618-687.
No studies were found to evaluate anticoagulation for subsegmental pulmonary embolism (SSPE). More research is needed to determine if anticoagulation therapy is beneficial and safe for patients with SSPE.
Area of Science:
- Cardiovascular Medicine
- Pulmonary Medicine
- Evidence-Based Medicine
Background:
- Acute pulmonary embolism (PE) is a significant cause of mortality.
- Advances in CTPA have increased diagnosis of peripheral PEs, including isolated subsegmental PE (SSPE).
- The clinical significance and optimal treatment for SSPE remain unclear, with potential for unnecessary anticoagulant risks.
Purpose of the Study:
- To assess the effectiveness and safety of anticoagulation therapy versus control in patients with isolated subsegmental pulmonary embolism (SSPE) or incidental SSPE.
Main Methods:
- A systematic review was conducted by searching multiple databases (Cochrane Vascular, CENTRAL, MEDLINE, Embase, CINAHL, AMED) and clinical trial registries.
- Included studies were randomized controlled trials comparing anticoagulation therapy to control in patients with SSPE or incidental SSPE.
- Data extraction and quality assessment were planned following Cochrane Handbook guidelines.
Main Results:
- No randomized controlled trials met the inclusion criteria for this review.
- There is a lack of evidence from high-quality studies regarding the effectiveness and safety of anticoagulation for SSPE.
Conclusions:
- Currently, there is insufficient evidence from randomized controlled trials to guide anticoagulation therapy for isolated or incidental subsegmental pulmonary embolism (SSPE).
- Further well-conducted research is essential to inform clinical practice decisions regarding anticoagulation for SSPE.
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