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Title: Risk factors for hyperuricemia in congenital heart disease patients and its relation to cardiovascular death.
Authors: Rodríguez-Hernández, Juan Lizandro
Rodríguez-González, Fayna
Riaño-Ruiz, Marta
Martínez Quintana, Efrén 
UNESCO Clasification: 320501 Cardiología
Keywords: Cardiovascular death
Congenital heart disease
Issue Date: 2018
Publisher: 1747-079X
Journal: Congenital Heart Disease 
Abstract: Introduction: Hyperuricemia has been associated with cardiovascular risk factors but it remains controversial if uric acid is an independent predictor of cardiac mortality. Methods: A total of 503 CHD patients (457 nonhypoxemic and 46 hypoxemic) and 772 control patients fulfilled inclusion criteria. Demographic, clinical, and analytical data [serum uric acid and 24h urine uric acid levels, N‐terminal pro‐B‐type natriuretic peptide (NT‐pro‐BNP), and C‐reactive‐protein (CRP) concentrations] were studied. Survivals curves to determine cardiac death and arterial thrombosis in CHD patients were also examined. Results: Noncyanotic and cyanotic CHD patients had significant higher serum uric acid concentration (5.2 ± 1.5 vs 4.9 ± 1.3mg/dL, P = .007 and 6.7 ± 2.1 vs 4.9 ± 1.3mg/dL, P < .001, respectively) and gout (1% vs 0%, P = .003 and 4% vs 0%, P < .01, respectively) than the control population. Among CHD patients, hyperuricemic patients were significant older and with overweight, used more diuretics, were more cyanotic and had higher serum creatinine, NT‐pro‐BNP and CRP concentrations than nonhyperuricemic. In the multivariable analysis, the body mass index (BMI) (OR 1.09; 95% CI 1.01–1.18), cyanosis (OR 6.2; 95 CI 1.5–24.6), serum creatinine concentration (OR 49; 95% CI 44–538), and being under diuretic treatment (OR 4.5; 95% CI 1.4–14.5) proved to be risk factors for hyperuricemia in CHD patients. The Kaplan–Meier events free survival curves, during a 5.2 ± 2.7 years follow‐up of up time, showed that hyperuricemic CHD patients had significant higher cardiovascular death (P = .002). However, after applying the Cox regression analysis uric acid levels lost its statistical significance. No significant differences were seen in relation to thrombotic events between CHD patients with and without hyperuricemia. Conclusions: CHD patients, noncyanotic and cyanotic, have higher serum uric acid levels and gout than patients in the general population. BMI, renal insufficiency, cyanosis, and the use of diuretics were risk factor for hyperuricemia among CHD patients.
ISSN: 1747-079X
DOI: 10.1111/chd.12620
Source: Congenital Heart Disease [ISSN 1747-079X], v. 13 (5), p. 655-662, (Septiembre-Octubre 2018)
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