Objective: To provide the information for treatment and prevention
of staghorn calculi by analyzing stone composition and studying the
relationship between stone and urinary tract infections.
Methods: Clinical data of 51 patients who underwent PCNL
in our department were analyzed retrospectively. To study the
stone compositions by infrared spectrophotometry.
Results: Six types of stone compositions were obtained.
There are calcium oxalate monohydrate, calcium oxalate
dehydrate, carbonate apatite, magnesium ammonium phosphate
hexahydrate, uric acid and L-cystine. Of the 51 stones analyzed,
calcium oxalate stones were found in 41 case (80.39%), infection
stones in 26 case (50.98%), uric stones in 10 case (19.61%).
The majority of stones were mixed compositions, it was most
commonly found which was made of calcium mixed carbonate
apatite, and pure stones were found in 15 case (29.41%). Urinary
tract infections was found in 78.43% patients, and positive urine/
stone culture was found in 67.35% patients.
staghorn calculi's crystalline composition was multiplicity, many
factors were involved in its growth, and it has a close relationship
with urinary tract infection. So composition analysis and antiinfective
therapy are very important in treatment and prevention
of staghorn calculi.