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[Lipoprotein (a) is a risk factor for cerebrovascular accident in patients with chronic renal failure]
1Third Department of Internal Medicine, Toho University Ohashi Hospital, Tokyo, Japan.
Insights
Elevated lipoprotein (a) [Lp(a)] levels are a significant risk factor for cerebrovascular accident (CVA) in patients with chronic renal failure (CRF). This finding highlights Lp(a) as a key predictor for CVA events in this vulnerable population.
Area of Science:
- Nephrology
- Cardiology
- Neurology
Context:
- Cerebrovascular accident (CVA) significantly impacts survival in chronic renal failure (CRF) patients.
- Serum lipoprotein (a) [Lp(a)] is a known atherosclerosis risk factor, with elevated levels common in CRF.
- The specific link between high Lp(a) and CVA risk in CRF patients remains unclear.
Purpose:
- To investigate the association between serum Lp(a) levels and the risk of CVA in patients with CRF.
- To identify independent risk factors for CVA in a cohort of CRF patients.
Summary:
- A retrospective study analyzed 105 CRF patients, measuring serum Lp(a) via ELISA.
- Patients with CVA exhibited significantly higher median Lp(a) levels (38 mg/dl) compared to those without CVA (23 mg/dl).
- Logistic regression identified elevated Lp(a), hypertension, and smoking as independent risk factors for CVA in CRF.
Impact:
- Serum Lp(a) emerges as a critical risk factor for CVA in chronic renal failure patients.
- Findings suggest Lp(a) may be a valuable biomarker for predicting CVA events in CRF.
- This research underscores the importance of managing Lp(a) levels in CRF to mitigate cerebrovascular risk.
Abstract:
Cerebrovascular accident (CVA) is an important predictor of survival in patients with chronic renal failure (CRF). Although serum lipoprotein (a) [Lp(a)] is an independent risk factor for atherosclerosis in the general population and Lp(a) levels are increased in patients with CRF, the relationship between increased Lp(a) and CVA has not been clarified in patients with CRF. We therefore determined the association between serum Lp(a) levels and the risk of CVA in a retrospective study of 105 patients with CRF. Lp(a) was measured by ELISA in 31 patients with CVA and 74 patients without CVA. The median Lp(a) concentration of the patients with CVA was significantly higher than that of patients without CVA (38 vs 23 mg/dl: p < 0.001). Logistic regression analysis determined that elevated serum Lp(a) concentration (relative risk ratio: 1.041, p < 0.005), hypertension (relative risk ratio: 9.747, p < 0.05) and smoking (relative risk ratio: 4.554, p < 0.05) were risk factors for CVA. In contrast, serum total cholesterol, triglycerides, high density lipoprotein cholesterol, low density lipoprotein cholesterol, gender underlying condition of renal disease and duration of hemodialysis were not associated with an increased risk of CVA. These results suggest that Lp(a) is a risk factor for clinical events attributable to CVA in patients with CRF.
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