DVT Prophylaxis Protocol | Dr. Nathaniel Stewart
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DVT Prophylaxis Protocol

A postoperative anticoagulation framework for reducing blood clot risk after total joint arthroplasty, with aspirin and Coumadin pathways based on individual DVT risk factors.

Reducing Blood Clot Risk After Joint Replacement

Postoperative complications occur in approximately 2% of individuals who undergo total joint arthroplasty. One of the most common surgical complications is deep venous thrombosis, or DVT, more commonly referred to as a blood clot.

Dr. Stewart's team works to reduce blood clot risk by treating patients prophylactically with an anticoagulant after surgery. The two main forms of anticoagulation used are aspirin and Coumadin.

DVT Prophylaxis Protocol
Download the attached PDF protocol for the full risk-factor checklist and prophylaxis pathway.
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Aspirin or Coumadin Based on Risk

The protocol uses a list of criteria to help determine which patients are at higher risk of developing a blood clot after surgery.

No DVT Risk Factors

Aspirin Pathway

Patients with no listed risk factors are treated with aspirin 325 mg once daily for DVT prophylaxis for one month postoperatively.

One or More Risk Factors

Coumadin Pathway

Patients with one or more listed DVT risk factors are treated with Coumadin for DVT prophylaxis for three weeks postoperatively.

Risk Factors for Deep Venous Thrombosis

The attached protocol lists the following factors as increasing a patient's chance of developing a blood clot after surgery.

  • Personal or family history of DVT or pulmonary embolism
  • Cancer diagnosis or treatment within the past 6 months
  • Previous major surgery within the past 4 weeks
  • Blood clotting disorder, including Factor V Leiden, Protein C deficiency, or Protein S deficiency
  • Use of birth control pills or hormone replacement therapy
  • Tobacco use
  • Inflammatory bowel disease, including Crohn's disease or ulcerative colitis
  • Age greater than 70
  • Obesity with BMI greater than 40
  • Diabetes
  • Congestive heart failure
  • Coronary artery disease

Learn About Dr. Stewart's Surgical Specialties

As industry leaders, Dr. Stewart and his team help patients return to active lives through advanced orthopedic procedures and focused recovery planning.

Knee Surgery

Knee Arthroscopy

A minimally invasive knee procedure used to evaluate and treat select meniscus, cartilage, and joint problems through small incisions.

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Hip Replacement

Total Hip Arthroplasty

Hip arthroplasty is one of Dr. Stewart's core strengths in orthopedic surgery, helping patients move more comfortably and recover confidence.

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Hip Surgery

Hip Arthroscopy

A minimally invasive hip procedure used to evaluate and treat select labral, cartilage, and joint problems through small incisions.

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Knee Replacement

Mako Total Knee Replacement

Mako robotic-assisted total knee replacement helps Dr. Stewart plan and position implants with precision for patients with advanced knee arthritis.

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DVT Prophylaxis

Questions About the Protocol?

Dr. Stewart and his team can review individual risk factors, medication pathways, and postoperative instructions before total joint arthroplasty.

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