Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 41

Discuss the formation of renal calculi, composition of renal calculi, and patient management techniques.

Step 1 of 3

Renal calculi:

Renal calculi or kidney stones formed in ureters and bladder, calyces and pelvis of kidney.

Formation of renal calculi:

• Factors favoring formation of calculi are similar to factors favoring formation of crystals.

• pH, urinary stasis and chemical concentrations favors renal calculi formation.

• Freshly voided urine having clumps of crystals indicates calculi formation

• Crystalluria is noted in increased amount during summer which forms renal calculi.

• However due to variations of urine condition in body and container which has specimen, least importance is given to crystals in urine for detecting calculi formation.