ESWL
PCNL
radial nephrolithotomy
pyelolithotomy with ureteral stenting
B. PCNL
indinavir
magnesium ammonium phosphate
xanthine
matrix
because urine and body secretions are highly concentrated
due to renal leak hypercalciuria
as a result of distal renal tubular acidosis type I
because of reduced or absent of oxalobacter formigenes colonization
they are metabolic stones that form at high urinary pH
they score 800 1000 HU on CT
only 25% of affected patients have Gout disease
affected patients must stop eating animal protein
have diagnostic hexagonal crystals
dont respond to ESWL therapy
are highly soluble in water
inherited in an autosomal recessive fashion
spinal cord injury
senile enlargement of prostate
augmented bladder
neurogenic hyper-reflexive bladder
a stone in the lower calyx with a wide mouth of infundibulum and obtuse lower calyx to ureter angle
a stone in an anterior group calyceal diverticulum with thin overlying renal parenchyma
5 mm calcium-containing stone in an intrarenal pelvis and wide UPJ
6 years post anatrophic nephrolithotomy, recurrent mid calyceal stone
often need sedation or anesthesia
vesico-ureteral reflux must be excluded
pediatrics have a higher clearance rate of stones when compared to adults
safety measures must be taken to avoid lung contusions
should be treated with more analgesics
must undergo metabolic worked out
are unlikely to pass out spontaneously
chemolysis should be tried first
stones at posterior urethra could be pushed back to the bladder
stones at anterior urethra have to undergo a trial of milking out, using copious intra-urethral xylocaine gel
often respond to a two-week course of tamsulosin
respond to Holmium laser treatment
can be introduced from the bladder or kidney or any part of the ureter`s course
the standard adult size is 32 cm long, 4 mm calibre
might result in encrustations and ureteral obstruction
might result in ureteral dilation
right hemicolectomy
small bowel resection
Roux-en-Y gastric bypass
b & c
≥ 2 cm diameter
upper calyx location
Na.urate composition
600 - 800 HU density
renal insufficiency
active urinary tract infection
uncorrected bleeding disorder
third trimester pregnancy
watchful waiting
open surgical correction
IVU with possible endoscopic ureteral stenting
perc. nephrostomy tube insertion
chemical analysis of a recovered stone
hypercalcemia
CT finding
high breakability on ESWL
Ca.phosphate
Ca.oxalate
Na.urate
struvite
patients should be given large amounts of fluids to hasten stones passage
fluids are given to keep the patient well hydrated
the recommended regimen is 2 L of ringer lactate over 2 hours
fluids are contraindicated if desmopressin (DDAVP) was given
the initial step is papillary plaque formation
crystals formation occurs inside the nephron
tubular precipitates form harmless crystalluria
the attraction of organic compounds and activation crystallization is regulated by osteopontin
400 600 HU
600 800 HU
800 1000 HU
1000 1200 HU
composed of calcium phosphate and calcium carbonate
the vast majority are asymptomatic
most of the calculi are found in the transitional zone
they dont affect PSA levels
it is characterized by low urinary magnesium and citrate
magnesium increases renal tubular citrate resorption
diarrheal is a remarkable side effect of magnesium therapy
potassium-magnesium preparations might restore urinary magnesium and citrate levels
form due to inspissated smegma
form due to stasis of urinary salts
cause inguinal lymphadenopathy
often associated with phimosis in uncircumcised males
limit beef, chicken, pork, eggs, fish, shellfish, and other animal proteins
limit beans, nuts, chocolate, coffee, dark green vegetables, and soda
limit canned, packaged, and fast foods
limit milk, cheese, and other dairy products
placing the patient in anti-Trendelenburg position
making the puncture under local anesthesia
injection Co2 gas to create a safety space under the diaphragm before puncturing
making the puncture during full expiration
stone chemical composition
stone burden
first stone vs. recurrent
stone density
high citrate, high oxalate
low citrate, low oxalate
high citrate, low oxalate
low citrate, high oxalate
uncontrollable bleeding
incomplete removal of stones
pneumothorax
colonic perforation
short skin-to-stone distance (SSD)
end-stage renal failure
a stone in the upper calyx
the presence of a 30 cm, 4.7 Fr ureteral stent in situ
it causes reduction in the mean intra-ureteral pressure
it reduces the pain of acute renal colic
it has a direct relaxing effect on the renal pelvis and ureteral musculature
it is indicated when stones are ≤ 4 mm in diameter
1000 - 1300 HU density
5 - 10 mm diameter
lower calyx location
mid ureteral location