Clinical Characteristics and Outcomes of Deep Vein Thrombosis in Relation to Location: A Retrospective Analysis Study

Majed S Al Yami1,2,3, Abdulmajeed M Alshehri1,2,3, Ghadah M Alotaibi1

  • 1Department of Pharmacy Practice, College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.

Insights

Deep vein thrombosis (DVT) classification into isolated distal (iDDVT), isolated proximal (iPDVT), or mixed types showed similar long-term outcomes. Baseline characteristics did not significantly predict DVT type, with leg injury being higher in iDDVT.

Area of Science:

  • Medical research
  • Vascular medicine
  • Thrombosis

Background:

  • Deep vein thrombosis (DVT) is a significant cause of mortality and morbidity.
  • DVT classification includes isolated distal DVT (iDDVT), isolated proximal DVT (iPDVT), and mixed DVT.
  • Understanding differences in baseline characteristics and outcomes across DVT types is crucial for patient management.

Purpose of the Study:

  • To investigate the baseline characteristics of patients with different DVT classifications.
  • To assess and compare clinical outcomes, including recurrent DVT, major bleeding, rehospitalization, and mortality, among iDDVT, iPDVT, and mixed DVT groups.

Main Methods:

  • Retrospective study analyzing data from 493 patients experiencing their first DVT event.
  • Patients were categorized into iDDVT, iPDVT, or mixed DVT groups based on clot location and extent.
  • Outcomes assessed included recurrent DVT, major bleeding (MB), VTE-related rehospitalization, and DVT-related inpatient mortality at 12 months.

Main Results:

  • The study included 273 (55.4%) iPDVT, 25 (5.1%) iDDVT, and 195 (39.6%) mixed DVT patients.
  • Leg injury was a significantly more common etiology in iDDVT (24%) compared to iPDVT (6.2%) and mixed DVT (5.6%).
  • At 12 months, overall recurrent DVT was 9.9%, with similar rates across groups (iPDVT 9.2%, iDDVT 12.0%, mixed DVT 10.8%). Rates of MB, re-hospitalization, and DVT-related death were also similar.

Conclusions:

  • No significant association was found between baseline characteristics and the development of specific lower extremity DVT types.
  • Clinical outcomes, including recurrence, bleeding, rehospitalization, and mortality, are comparable across isolated distal, isolated proximal, and mixed DVT classifications.

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