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Monitoring and Management of Uric Acid Therapy in Gout and Chronic Kidney Disease: A Single-Center Retrospective
Ioannis Karageorgiou1, Zeeshan Javed2, Austen Grooms1
1Internal Medicine, William Beaumont University Hospital, Royal Oak, USA.
Insights
Adherence to gout treatment guidelines is low, with nearly half of patients not monitored and over half with high uric acid levels not receiving dose adjustments. Chronic kidney disease did not impact these outcomes.
Area of Science:
- Nephrology
- Rheumatology
- Pharmacology
Background:
- Gout frequently co-occurs with chronic kidney disease (CKD), impacting uric acid (UA) excretion.
- Current guidelines advocate for regular monitoring and dose adjustments of urate-lowering therapy (ULT).
- Adherence to these established ULT guidelines in clinical practice remains uncertain, particularly in patients with comorbidities.
Purpose of the Study:
- To evaluate adherence to urate-lowering therapy (ULT) guidelines in gout patients.
- To assess the influence of chronic kidney disease (CKD) and other comorbidities on ULT guideline adherence.
Main Methods:
- Retrospective cohort study of 5,985 gout patients initiated on allopurinol (2015-2020).
- Inclusion criteria: age >18, gout diagnosis, new allopurinol prescription.
- Primary outcome: UA monitoring within six months; Secondary outcome: dose adjustments for elevated UA levels (>6 mg/dL).
Main Results:
- Only 48.3% of patients had UA levels monitored within six months.
- CKD stage did not significantly affect UA monitoring rates (p=0.059).
- In patients with elevated UA levels, 54.3% did not have dosage adjustments.
Conclusions:
- Significant gaps exist in adherence to ULT guidelines for gout management.
- Nearly half of patients missed recommended UA monitoring, and over half with elevated UA levels did not receive timely dose adjustments.
- CKD stage did not influence monitoring or dose adjustment rates in this patient cohort.
Abstract:
Background Gout commonly coexists with chronic kidney disease (CKD) due to reduced renal excretion of uric acid (UA). Guidelines recommend regular monitoring and dose adjustment of urate-lowering therapy (ULT), but the rate of adherence to these guidelines is not well established. Our study aimed to determine adherence to ULT guidelines in gout patients at our institution. In particular, we sought to assess the effect of CKD as well as other comorbidities on the prevalence of ULT guideline adherence. Methods We conducted a retrospective cohort study of 5,985 gout patients at our institution initiated on allopurinol between 2015 and 2020. Inclusion criteria were age over 18, a gout diagnosis, and a new allopurinol prescription. The primary outcome was UA monitoring within six months of therapy initiation. A secondary outcome was the prevalence of dose adjustments made by providers in response to a UA level above target. Results Only 48.3% (n = 2,889) of patients had UA levels monitored within six months. CKD stage did not significantly impact monitoring rates (p = 0.059). In patients with elevated UA levels (>6 mg/dL), 54.3% (n = 1,011) of patients had no dosage adjustments. Conclusions Significant gaps exist in adherence to ULT guidelines; nearly half of patients did not undergo recommended UA monitoring. Over half of patients with elevated uric levels did not have dosage adjustments. CKD stage did not affect the likelihood of UA monitoring or dose changes in persons with elevated UA levels.
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