Stone Disease

Question 1

What is the most common lower urinary tract stone disease?

Answer 1

Bladder calculi

accounting for 5% of all urinary lithiasis

Question 2

What happens when someone has a diet low in phosphate?

Answer 2

hypophosphaturia, hyperammonuria, promoting precepition of calcium oxalate and amonium acid urate

Question 3

True or false:

primary bladder calculi are more common in children exposed to low phosphate high protein diet

Answer 3

False: Primary bladder calculi are more common in children exposed to low-protein, low-phosphate diets.

Question 4

what is the most common predisposing factor for bladder stone formation?

Answer 4

bladder outlet obstruction.

Question 5

Which is associated with lower risk of stone formation in SCI patients? CIC or indwelling Foley

Answer 5

CIC 0.2% vs 4%

supra pubic catheter provides no benefit in stone formation vs indwelling urethral catheters

Question 6

which transplant patients are at risk of bladder calculi formation?

Answer 6

pancreatic transplant drained via bladder.

retained silk sutures as a nidus and or low ph bc of bicarb