How to Perform Antegrade Pyelography?

An ultrasound probe or a CT scan will be used to first find the kidneys. Then, the skin over the kidney will be numbed and a needle is passed to the kidney. Dye is inserted to outline the renal collection system. (This is the part of the urinary tract that drains urine between the kidney and bladder.)

Is antegrade pyelography done blindly?

Percutaneous needle puncture of the renal pelvis for antegrade pyelography is a technique that is widely accepted and can be performed in most cases as an alternative to retrograde pyelogram. The initial blind technique was introduced by Goodwin et al. but was later improved using fluoroscopic guidance.

What is percutaneous antegrade pyelography?

Antegrade pyelography¹ consists of pyelograms made after lumbar needle puncture of a hydronephrosis. Urine is aspirated through a 6 in. 18- or 19-gauge spinal needle, and urographic contrast medium is injected to outline the renal pelvis and ureter to the point of obstruction.