Table of Contents
- Blood clot facts
- What are blood clots? What does a blood clot look like?
- What causes blood clots (blood clots in veins or arteries)?
- What causes blood clots (blood clots in the heart, leaking, and other causes)?
- What are the risk factors for blood clots?
- What types of conditions are caused by blood clots (DVT and pulmonary embolism)?
- What types of conditions are caused by blood clots (AFib, atrial thrombosis, and others)?
- What are the signs and symptoms of blood clots?
- What kind of doctors treat blood clots?
- How are blood clots diagnosed?
- What tests are used to diagnose blood clots?
- What is the treatment for blood clots?
- What are the complications of blood clots?
- How can blood clots be prevented?
Quick GuideDeep Vein Thrombosis (DVT): Symptoms, Treatment & Prevention
How can blood clots be prevented?
Prevention is key in thrombosis or clot formation.
- For arterial thrombosis, the most likely precipitating event is a plaque rupture with clot formation in the artery.
- Minimizing the risk of vascular disease requires life-long attention to the risk factors that lead to plaque buildup and "hardening" of the arteries.
- Blood pressure and cholesterol control, diabetes management, and refraining from smoking all minimize the risk of arterial disease.
- Although family history is an important risk factor, one needs to be even more vigilant about the other risk factors if there is a family history of early heart attack or stroke.
Deep vein thrombosis
The main risk factor for deep vein thrombosis risks is immobilization. It is important to move around routinely so that blood can circulate in the venous system. On long trips, it is recommended to get out of the car every couple of hours and in an airplane routinely get up and stretch.
Physicians and nurses work hard at getting people moving after surgery or while in the hospital for medical conditions. The low molecular weight heparin known as enoxaparin (Lovenox) can also be used in low doses to prevent clot formation. Patients are often given tight stockings to promote blood return from the legs and prevent pooling of blood.
In patients who have had hip or knee replacement, anticoagulation with a NOAC may be appropriate.
In patients with atrial fibrillation, anticoagulation may be appropriate depending upon the patient's underlying condition, the clinical situation, and the risk factors for stroke. Using the CHA2DS2-VASc scoring system, the risk for stroke in atrial fibrillation may be calculated and discussed with the patient. This system takes various factors into account to determine the patient's risk:
- Age in years
- Congestive heart failure (CHF) history
- Hypertension (high blood pressure) history
- Stroke/TIA/ blood clot history
- Vascular disease history
Anticoagulation with a NOAC or warfarin may be appropriate. Continue Reading
Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012;141(2_suppl):
Dzsheka MS, et al. Stroke and bleeding risk in atrial fibrillation. Clin Cardiol.2014, Oct, 37(10)
Medscape. Deep Vein Thrombosis and Thrombophlebitis.
Fauci, Anthony S., et al. Harrison's Principles of Internal Medicine. 17th ed. United States: McGraw-Hill Professional, 2011.
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