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Evaluating the associations between compliance with CKD guideline component metrics and renal outcomes
Zannatun Nyma1, Kaori Kitaoka1, Yuichiro Yano1,2,3
1Noncommunicable Disease (NCD) Epidemiology Research Center, Shiga University of Medical Science, Otsu, Japan.
Insights
Adhering to Chronic Kidney Disease (CKD) guidelines in practice significantly improves renal outcomes. Higher compliance with CKD management metrics reduces the risk of kidney events, highlighting the importance of guideline-concordant care.
Area of Science:
- Nephrology
- Clinical Medicine
- Public Health
Background:
- Chronic Kidney Disease (CKD) management guidelines aim to improve patient outcomes.
- Real-world adherence to these guidelines and its impact on renal events are not well understood.
- A critical knowledge gap exists in linking CKD guideline compliance to clinical renal outcomes.
Purpose of the Study:
- To investigate the association between adherence to CKD guidelines in clinical practice and renal outcomes.
- To analyze the impact of specific clinical metrics on the risk of renal events in CKD patients.
- To determine if higher compliance with CKD management guidelines correlates with better renal preservation.
Main Methods:
- A national, multicenter CKD registry data analysis involving 4,455 patients.
- Inclusion of estimated glomerular filtration rate (eGFR) and eight key clinical metrics (electrolytes, lipids, hemoglobin, RAS inhibitors).
- Primary outcome: composite renal events (eGFR decline ≥30% or eGFR <15 mL/min/1.73 m²), analyzed over a median 513-day follow-up.
Main Results:
- High potassium, low sodium-chloride, low calcium, and high uric acid levels were associated with increased renal event rates.
- Renin-angiotensin system inhibitor use and high uric acid levels also correlated with higher event rates.
- Higher hemoglobin levels (≥13 g/dL) were linked to a reduced risk of renal events.
- Highest compliance group (8 metrics met) showed significantly reduced event risk compared to the lowest (0-5 metrics).
Conclusions:
- Compliance with CKD guidelines in clinical practice is significantly associated with improved renal outcomes.
- Guideline-concordant care is crucial for managing Chronic Kidney Disease effectively.
- Optimizing adherence to CKD management metrics can mitigate the risk of renal events and preserve kidney function.
Abstract:
Understanding the association between compliance to the Chronic Kidney Disease (CKD) guidelines in real-world clinical settings and renal outcomes remains a critical gap in knowledge. A comprehensive analysis was conducted using data from a national, multicenter CKD registry. This study included 4,455 patients with an estimated glomerular filtration rate (eGFR) measurement on the index date and eight additional metrics recorded within six months. These metrics comprised serum electrolyte levels, low-density lipoprotein cholesterol, hemoglobin, and the use of renin-angiotensin system inhibitors. The primary outcome was a composite of renal events, defined by a decline in eGFR to < 15 mL/min/1.73 m2 or a reduction of ≥ 30% in eGFR, confirmed by follow-up tests. Over a median follow-up of 513 days, 838 renal events were observed. High serum potassium levels (> 5.4 mmol/L) were associated with increased event rates compared to lower levels. Similarly, low serum sodium-chloride levels (< 33) correlated with higher event rates. Usage of renin-angiotensin system inhibitors, low serum calcium (< 8.4 mg/dL), and high uric acid levels (> 7.0 mg/dL) were also linked to increased events. Conversely, higher hemoglobin levels (≥ 13 g/dL) were associated with lower event rates. Compliance to guidelines, categorized into quartiles based on the number of met metrics, revealed a significantly reduced risk of events in the highest compliance group (meeting 8 metrics) compared to the lowest (0-5 metrics). Compliance to CKD guidelines in clinical practice is significantly associated with improved renal outcomes, emphasizing the need for guideline-concordant care in the management of CKD.
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