ABC of arterial and venous disease: Non-invasive methods of arterial and venous assessment
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چکیده
منابع مشابه
ABC of arterial and venous disease. Non-invasive methods of arterial and venous assessment.
In the simplest form of ultrasonography, ultrasound is transmitted as a continuous beam from a probe that contains two piezoelectric crystals. The transmitting crystal produces ultrasound at a fixed frequency (set by the operator according to the depth of the vessel being examined), and the receiving crystal vibrates in response to reflected waves and produces an output voltage. Conventional B ...
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• Place an appropriately sized cuff around the upper arm • Ensure that the equipment and the arm are at heart level • Locate the brachial pulse and apply ultrasound contact gel • Angle the Doppler probe at 45 o and move the probe to obtain the best signal • Inflate the cuff until the signal is abolished then deflate the cuff slowly and record the pressure at which the signal returns being caref...
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Introduction: Arterial stiffness is an important predictor of cardiovascular risk. Several indices have been introduced to estimate the arterial stiffness based on the changes in the brachial blood pressure. Since the substitution of the blood pressure changes in the central arteries such as carotid with the blood pressure changes in the brachial results in error in the blood...
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ژورنال
عنوان ژورنال: BMJ
سال: 2000
ISSN: 0959-8138
DOI: 10.1136/bmj.320.7236.698