Patient Education Blog

Archive for the ‘Pulmonary embolism’ Category

DVT and PE: How Long to Treat with “Blood Thinners”

| Blood thinners (anticoagulants), Deep vein thrombosis (DVT), Length of treatment, Pulmonary embolism, Therapy | 32 Comments »

Stephan Moll, MD writes…

What Kind of Clot did You Have?

If you have had a blood clot in your legs or your lung (pulmonary embolism=PE), you will wonder how long you should stay on a “blood thinner”. The decision depends on a number of factors which will be discussed below. Read the rest of this entry »

Testosterone and Blood Clots

| Athletes and blood clots, Deep vein thrombosis (DVT), Pulmonary embolism, Therapy | 2 Comments »

Testosterone Replacement Therapy

Replacement therapy with low doses of testosterone does not adversely affect blood coagulation status [ref 1] and does not appear to increase the risk of venous or arterial blood clots. Thrombosis is not listed as a potential side effect in a commly used drug compendium (Micromedex). Furthermore, the 2006 “Clinical Practice Guideline” from the Endocrine Society also does not list blood clots as a side effect of testosterone replacement therapy, or a previous history of blood clots as a reason not to give testosterone replacement therapy [ref 2]. However, the Androgel® package insert (prescribing information) lists “blood clots in the legs” as a potential side effect Read the rest of this entry »


| Deep vein thrombosis (DVT), Pulmonary embolism, Therapy | 3 Comments »

What is HHT?

HHT (Hereditary Hemorrhagic Teleangiectasia) is an inherited disorder in which small blood vessels develop abnormally [ref 1].  It is also called Osler-Weber-Rendu syndrome. It is estimated that 30,000 to 60,000 people (1 out every 5,000 to 10,000) in the United States have it. Individuals with HHT develop small abnormal blood vessels (teleangiectasias) under the skin (usually in the fingers and hands) and in the lining of the nose and mouth. Read the rest of this entry »

Symptoms of DVT and PE

| Deep vein thrombosis (DVT), Pulmonary embolism | 15 Comments »

DVT (Deep Vein Thrombosis)

A DVT is a blood clot that most commonly occurs in the leg, typically only one leg (image 1). However, occasionally it occurs in both legs at the same time (=bilateral DVT). Sometimes, a DVT is in the pelvic veins or the big abdominal vein (=inferior vena cava). And some DVTs occur in the arm. The anatomy and terminology of leg, pelvic and arm veins (together called “venous clot” or “venous thromboembolism=VTE) is also discussed here.

Image 1. DVT in right leg; clot broken off the DVT and travelling in the big abdominal vein towards the lung; PE in the right lung (Graphic design Jeff Harrison, Wilmington, NC; © Stephan Moll)

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Progestin-only Contraceptives and Blood Clots

| Clotting disorder - thrombophilia, Deep vein thrombosis (DVT), Pulmonary embolism, Women and blood clots | 4 Comments »


It is well known that combination contraceptives (containing estrogens AND progestins) increase the risk for blood clots (venous thromboembolism = VTE). Relatively few data, however, have been published on progestin-only contraceptives, so that until recently it has not been clear whether they increase the risk for VTE or not. Read the rest of this entry »