Medical Health Encyclopedia

Injury Disease Nutrition Poison Symptoms Surgery Test Special Topic

1 2 5 A B C D E F G H I J K L M N O P Q R S T U V W X

Duplex/doppler ultrasound test

Overview Risks Results

Duplex/doppler ultrasound exam of extremity, vascular ultrasound

Normal Values: The veins show normal flow, and the deep veins show flow that varies with breathing. The veins should be fully compressible and have no internal clots. The arteries have normal systolic and diastolic components on the ultrasound, which correspond to the beating and resting of the heart. There is normal blood pressure and no sign of a narrowing or closure. The normal ankle-to-brachial arterial blood pressure index (ratio of systolic blood pressures) is 0.85 or greater. What abnormal results mean: In the veins: Venous occlusion (closing of vein) Blood clots In the arteries: Arterial occlusive disease Spastic arterial disease (arterial contractions brought on by cold or emotion) Embolic arterial occlusion (obstruction in the artery by a body such as a blood clot, fat globules, or air bubbles.)

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited. Text Continues Below