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Oncologist, radiologist

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Inferior vena cava ultrasound

Alexey Kryvenko, medical expert
Last reviewed: 05.07.2025

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Indications for ultrasound examination of the inferior vena cava

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

Preparation for ultrasound of the inferior vena cava

Patient preparation. It is advisable to fast for 8 hours before the examination. If there is a risk of dehydration, clean water can be given. In an emergency, the examination can be performed without preparation.
Patient position. The patient can lie in a comfortable position on his back. A small pillow can be placed under the head, if necessary, a pillow can also be placed under the patient's knees. Apply the gel along the midline of the abdomen approximately 15 cm down from the xiphoid process to the symphysis.
Selecting a probe: Use a 3.5 MHz convex probe for adults. Use a 5 MHz probe for children and thin adults.
Adjusting the sensitivity of the device. Begin the examination by placing the sensor in the midline of the upper abdomen under the xiphoid process.

Tilt the transducer to the right to obtain an image of the liver, adjust the sensitivity to obtain an optimal image.