Proteinuria generally need to check the renal vein ultrasound, mainly used to identify the presence of nutcracker syndrome, nephrotic syndrome and so on. 1. Nutcracker syndrome: For example, proteinuria accompanied by occult blood in the urine as well as low back pain, the renal veins can be examined by ultrasound to determine the diameter of the renal veins and the speed of blood flow. It can be diagnosed if it shows a threefold difference in diameter between the front and back of the renal vein passing through the abdominal aorta. 2. Nephrotic syndrome: patients with nephrotic syndrome have hypercoagulable blood, which can easily cause renal vein thrombosis, and this disease can easily lead to proteinuria, red blood cells, swelling, so if the patient has proteinuria, you can check the renal vein ultrasound to make sure there is a thrombus, and then combine with the swelling, high blood lipids, and pathologic typing to further clarify the cause of the proteinuria. After the occurrence of proteinuria should go to the hospital in time, because there are many causes of proteinuria, whether it is necessary to check the renal vein ultrasound, must communicate with the nephrologist to clarify.
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