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Oncologist, radiologist

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Ultrasound of the inferior vena cava

Alexey Portnov, medical expert
Last reviewed: 20.11.2021

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Indications for ultrasound examination of the inferior vena cava

Sudden dilatation of the veins of the lower extremities with phlebitis (inflammation) or without it. Varicose veins are not an indication for ultrasound examination of the inferior vena cava.
Recurrent or possible pulmonary embolism.
Tumor of the kidney.

Preparation for ultrasound of the inferior vena cava

Preparation of the patient. It is desirable to have an 8-hour fast before the study. If there is a danger of dehydration, you can give clean water. If there is an emergency, you can conduct a study without preparation.
Position of the patient. The patient can lie in a comfortable position on the back. Under the head, you can put a small pillow, if necessary, you can place the pillow under the patient's knees. Apply gel along the midline of the abdomen about 15 cm down from the xiphoid process to the symphysis.
Select the sensor. Use a 3.5-MHz convection sensor for adults. Use a 5 MHz sensor for children and thin adults.
Adjustment of sensitivity of the device. Start the study by placing the sensor along the midline in the upper abdomen under the xiphoid process.

Tilt the sensor to the right until you get a picture of the liver, adjust the sensitivity to obtain the optimal image.