Journal of clinical ultrasound : JCU
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The purpose of this study was to correlate the right atrial pressure with the blood flow velocity and pulsatility index (PI) values obtained with duplex Doppler sonography of the common femoral vein. ⋯ The association of a decreased minimum velocity, especially a negative value, and an increase in PI in the common femoral vein may indicate an elevated right atrial pressure. Sonographic assessment of retrograde flow velocity in the common femoral vein may be useful in monitoring the response to medical treatment to decrease atrial pressure.
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We evaluated the utility of venous duplex ultrasonography (VDUS) of the lower extremities in patients with pulmonary embolism (PE) and studied the distribution of venous thrombi in deep vein thrombosis (DVT) patients with and without PE. ⋯ Sonography should be the first diagnostic test for patients suspected of having PE with any sign or symptom related to DVT. VDUS of the asymptomatic leg is unnecessary in the diagnosis and management of DVT. Omitting the superficial femoral vein examination would lead to some decrease in the sensitivity of VDUS.
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Chronic inflammatory demyelinating polyradiculoneuropathy is an autoimmune disease characterized by recurrent demyelination and remyelination with resultant thickening of the peripheral nerves. We report a case in which sonography was instrumental in demonstrating diffuse peripheral nerve hypertrophy. ⋯ Similar findings were noted for the median, sciatic, and femoral nerves. The brachial plexus findings were confirmed by MRI.