eCite Digital Repository

Clinical audit of kidney stone formers in Southern Tasmania


Nejatian, A and Patel, A and Jose, M, Clinical audit of kidney stone formers in Southern Tasmania, 55th Australian and New Zealand Society of Nephrology (ANZSN), 30 November - 02 December, Online, pp. 59-59. ISSN 1320-5358 (2020) [Conference Extract]

Pending copyright assessment - Request a copy



To investigate the number, type, and metabolic profile of recurrent kidney stone formers (KSF) referred to a tertiary hospital renal unit.


Up to 15% of adults are affected by kidney stones at some point during their life. For people who have their first stone, up to half will experience a second. Complete metabolic assessment of KSF in the Tasmanian population might allow more effective preventative strategies to be put in place.


This retrospective clinical audit reviewed adult KSF referred to the Royal Hobart Hospital renal unit between 2009 and 2019.


We only identified 39 adults (18 (46%) women) mean age 52 16.9 years. Overall, 85% of these patients had a previous admission for kidney stones. All patients had pre-existing comorbidities, including hypertension (62%), diabetes (36%) and 46% had a smoking history. Of those with a known BMI, 95% were overweight or obese. On stone analysis, 21% were calcium oxalate, 13% were staghorn, 8% were urate, 5% were cysteine and the rest (51%) were not recorded. Biochemically, 18% had low serum bicarbonate, 68% had low eGFR, 5% had hypercalcaemia, 14% hyperphosphatemia, 9% had hypophosphatemia, 25% had hyperuricemia and 18% had hypomagnesaemia. Sixteen of 39 (40%) patients had a 24-hour urine assessment where most (56%) had <2 L urine volume. Of those tested, 40% had hyperoxaluria (2 of 5), 33% had hypocitraturia (2 of 6) and none had hypercalciuria (0 of 6).


This audit shows stone analysis is underperformed, referral to renal physicians uncommon and there is inconsistent metabolic assessment. A consistent management approach could possibly help improve preventative strategies and reduce future episodes of renal colic or hospital admissions.

Item Details

Item Type:Conference Extract
Keywords:chronic kidney disease, dialysis, end-stage kidney disease
Research Division:Biomedical and Clinical Sciences
Research Group:Clinical sciences
Research Field:Nephrology and urology
Objective Division:Health
Objective Group:Clinical health
Objective Field:Treatment of human diseases and conditions
UTAS Author:Nejatian, A (Misc Ava Nejatian)
UTAS Author:Patel, A (Dr Ameeta Patel)
UTAS Author:Jose, M (Professor Matthew Jose)
ID Code:142055
Year Published:2020
Deposited By:Medicine
Deposited On:2020-12-10
Last Modified:2021-06-02

Repository Staff Only: item control page