What Is a Renal Angiography?
Generally can show the beginning of the spermatic vein, and clear its opening position.
- Renal angiography includes renal arteriography and renal venography. Angiography is an interventional detection method. A contrast agent is injected into a blood vessel, because X-rays do not penetrate the contrast agent. Angiography uses this feature to diagnose vascular disease through the image of the contrast agent under X-rays. .
- Name
- Renal angiography
- category
- X-ray
Normal renal angiography
- Generally can show the beginning of the spermatic vein, and clear its opening position.
Clinical significance of renal angiography
- Renal artery stenosis-induced hypertension: its angiographic indications: (1) unexplained hypertension in young people; (2) the onset of hypertension is short and progresses rapidly; (3) the size of the two kidneys in intravenous urography is significantly different (4) Radionuclide nephrogram showing changes in renal function on two kidneys or one side, decreased vascular segment or delayed excretory segment; (5) auscultation of vascular noise around the umbilicus. Renal venography, mainly used for renal cancer, to understand whether there is a tumor thrombus in the renal vein; to understand the opening of the spermatic cord vein for selective spermatic cord venography; to extract renal venous blood to determine renin, determine whether there is renal artery stenosis, and estimate the operation After effect.
Renal angiography considerations
- Unsuitable population: severe cardiovascular insufficiency, coronary artery disease, poor general condition, and contraindication to iodine allergy. Contraindications before examination: prepare the bowel before imaging. Use a sedative 2 hours before surgery. One day before surgery, antibiotics were used to prevent infection. Skin preparation was performed on both sides of the groin and perineum before surgery. Allergy test by intravenous method. After the examination: Postoperative treatment was performed in bed for 24 hours, antibiotics were used for three days, and 1000 ml of 5% glucose was injected intravenously to promote the discharge of contrast medium and protect renal function.
Renal angiography process
- (1) Take a supine position, first take a plain film of the urinary system. Routine disinfection and spreading towels. At a depth of 2 cm below the inguinal ligament, the puncture site was used for local anesthesia, and a small cut was made in the skin. The left hand touches the femoral artery pulsation, the right hand holds the cannula puncture needle, and suddenly penetrates the artery with force. (2) Withdraw the needle core, gradually retract the needle sheath, and blood is ejected, indicating that the artery is inserted. The guide wire was inserted into the femoral artery through the needle sheath, the needle sheath was pulled out, and the puncture point was pressed with the left hand to prevent bleeding. After dilating with a dilator, it is introduced into a straight hole catheter by a guide wire. The guide wire was pulled out, and a syringe containing heparin saline (1000 ml of normal saline plus 12,500 units of heparin) was slowly injected. Or connect the three-way joint and close after injecting heparin. (3) Place the end of the catheter at the lower edge of the first lumbar vertebra under perspective, connect an automatic high-pressure syringe, and inject 40 ml of contrast medium at a rate of 15 ml per second. Filming started when 10 ml was injected. The first and second seconds are at the beginning and end, the third and fourth seconds are each one, and the seventh second is one. Renal vascular phase, renal parenchymal phase, and venous phase are shown. (4) Observe the wet film. If the development is not satisfactory, repeat it. At the end of the angiography, the catheter was removed, and local compression was applied for 15 minutes to stop bleeding, pressure bandaging, and returned to the ward.
Renal angiography related diseases
- Renal transplantation, renal vascular malformation and compression, renal venous thrombosis, renal amyloidosis, renal medulla necrosis, idiopathic acute tubulointerstitial nephritis, allergic acute tubulointerstitial nephritis, infectious acute tubulointerstitial nephritis , Postpartum urinary tract infection, renal cell carcinoma
Renal angiography- related symptoms
- Taste of alcoholic beverages, slippery dreams, renal stagnation, slippery spermatorrhea, embolic nephritis, low back pain with throbbing pain in the kidney area, renal arteriosclerosis, tubulointerstitial nephritis, thinning of the renal cortex, bilateral renal pain