Chapter 7 - Lab Tests/Clinical Procedures Flashcards
creatinine clearance
-measurement of the rate at which creatinine is cleared from the blood by the kidney
blood urea nitrogen (BUN)
-measurement of urea levels in blood
CT urography
- x-ray images obtained using computed tomography show multiple views of the kidney
- to detect kidney stones and evaluate hematuria
- with or without contrast material
kidneys, ureters and bladder (KUB)
-x-ray (without contrast) of the kidneys, ureters and bladder
renal angiography
- x-ray examination (with contrast) of the blood vessels of the kidney
- detects bleeding and obstruction of blood vessels leading to kidney
voiding cystourethrogram (VCUG)
- x-ray with contrast of the urinary bladder and urethra obtained while the patient is voiding
- will show reflux into ureters
retrograde pyelogram (RP)
- to locate kidney stones and other obstructions
- x-ray of the renal pelvis and ureters after injection of contrast through a urinary catheter into the ureters from the bladder
ultrasonography
-imaging of urinary tract structures using sound waves
radioisotope scan
-image of the kidney obtained after injecting a radioactive substance into the bloodstream
MRI urography
-changing magnetic field produces images of the kidney and surrounding structures in 3 planes of the body
cystoscopy
-direct visualization of the urethra and urinary bladder with an endoscope (cystoscope)
dialysis
-process of separating nitrogenous waste materials from the blood
hemodialysis (HD)
-blood is filtered through a machine and returned to the body
peritoneal dialysis (PD)
- a catheter introduces fluid into the peritoneal cavity where waste materials pass out of the blood and into the fluid. The fluid is then drained
- CAPD = continuous ambulatory peritoneal dialysis
lithotripsy
- urinary tract stones are crushed
- extracorporeal method (outside the body)
- ESWL = extracorporeal shock wave lithotripsy