urinary system Flashcards
removing waste products from the blood, maintaining fluid and electrolyte balance, and secreting substances that affect blood pressure and other important body functions
function of the kidney
how many liters of urine do the kidneys produce per day
1-2
4 1/2 inches long, 2-3 inches wide, and 1.25 inches thick with a medial concave border and a lateral convex border
kidney
superior aspect of the kidney lies more _____ than the inferior in an ______ plane angled anteriorly towards the aorta about _____ *
posterior, oblique, 35
kidneys extend from about _____
T12 - L3
related to the kidneys
renal
related to the kidneys (2)
nephro
related to the kidneys (3)
pyelo
related to the ureters
uretero
sac-like structure
cysto
related to the urethra
urethro
related to the urinary system
uro
enters the kidneys in the normal direction of blood flow
antegrade
contrast media introduced against normal flow
retrograde
what does IVU stand for
intravenous urogram
evaluation of known or suspected ureteral obstruction, recurrent urolithiasis, assessment of suspected congenital abnormalities, upper urinary tract lesions, effects of trauma, abnormalities that increase infection risks
indications for IVU
contraindications for IVU
ability of kidneys to filter contrast medium from the blood, patient’s allergy history
patient prep for IVU
lots of water, low residue diet 1-2 days, light evening meal, sometimes laxative, NPO past midnight
supplies for IVU procedure
contrast (typically 300), syringe, intravenous catheter kit, saline
begin IVU by taking ____
scout, KUB
perform _____ and set IV catheter, inject contrast ______ may be requested, perform ____ image, then image in succession every _____, give patient post exam instructions
venipuncture, bolus/drip, initial, 3-5 minutes
IVU during pregnancy
common exam due to obstruction of the ureters caused by fetus, exam modified to lower dose
what is the purpose in ureteral compression during IVU
slow the flow of opacified urine into the bladder to ensure filling of renal pelvises and calyces
where is the compression centered during IVU
ASIS
what is a post void bladder used to check for
small tumor masses or enlarged prostate in male patients
RPO shows
left kidney and right ureter
LPO shows
right kidney and left ureter
what are the projections for a nephrotomogram
AP during arterial phase and AP tomograms during the nephrotic phase
about how long does the nephrotic phase occur after completion of contrast injection
within 5 minutes
what steps to take to locate kidney depth
measure patient with calipers in cm then divide by 3 and add 5
centering for tomogram
MSP, curve of 10th rib
for tomogram images should occur where
one at fulcrum, then 1 inch above and below
patient prep for retrograde urogram
sterile procedure, pt placed in modified lithotomy position
what 3 projections are usually obtained during retrograde urogram
preliminary image, pyelogram, ureterogram
contrast injected under cine to watch flow, about how much fills up the renal pelvis
3-5 mL
some urologists recommend the table be tilted ___* _____ to prevent contrast from escaping the ureters
10-15, towards the head