What Is an Intravenous Pyelogram?

Intravenous pyelography (IVP) refers to a total urinary tract disease examination method in which intravenously injected contrast agent is excreted into the urinary tract through the kidney to observe the renal parenchyma, renal pelvis, calyx, ureter, and bladder. Radiography. After injection of the contrast agent, it needs to be filtered through the glomerulus and then concentrated through the renal tubules. Therefore, the filtering function and concentration function of the kidney can be indirectly understood, and the morphology of the renal pelvis, calyx, ureter and bladder can be clearly displayed.

Basic Information

nickname

Intravenous pyelography

TCM disease name

Excretory urography

Precautions

Fasting food

Pay attention

Allergy test should be done before use

Preparation for intravenous pyelography

1. Do an iodine allergy test and hold the breath hold training for the patient.

2. Do not eat foods that are prone to gassing and residues 2 to 3 days before the angiography, and barium or iodine, and drugs containing calcium or heavy metals are prohibited.

3. Take laxatives one afternoon before the radiography. The elderly, long-term bedridden, and habitual constipation can take laxatives every night 2 to 3 days in advance, and clean enema 1 to 2 hours before the inspection.

4. Fast and water for 12 hours before the test.

5. Take plain radiographs of the abdomen (kidney, bladder) to determine if it meets the imaging conditions.

6. Urinate before imaging, leaving the bladder empty.

Clinical significance of intravenous pyelography

It is used to check organic urinary tract organic lesions. Obstruction sites and causes of urinary tract obstruction can be observed; it can show the contrast agent filling defect caused by urinary tract stones; for renal tuberculosis, chronic pyelonephritis (CPN), renal pelvis caused by tumor Renal calamity destruction also has its own characteristic changes; in addition, it also has important diagnostic significance for renal parenchymal tumors, cystic kidney disease, one kidney, and renal ptosis. More suitable for patients with inconvenience of cystoscopy.

Because hypertonic contrast agent is concentrated in the kidney, it may damage renal function. Patients with existing renal insufficiency have reduced concentration ability, so the imaging is not clear. Those who must perform it can use double-dose or high-dose contrast agent imaging But it is more likely to aggravate kidney damage. This test should be done with caution in patients with renal insufficiency. This test is forbidden for iodine allergy, severe cardiovascular disease, and hyperthyroidism.