Preservation of Renal Function in Response to Cardiac Resynchronization Therapy

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Background Cardiac resynchronization therapy (CRT) has recently been introduced as a new option for patients with severe heart failure, but its effect on renal function remains unclear. Methods and Results Twenty-three patients receiving CRT were studied. Responders were those who showed >0% increase in left ventricular ejection fraction after CRT by echocardiography. Clinical parameters, echocardiographic measurement, renal function, and prescriptions were examined before and 3 months after CRT, and the relationship between the response to CRT and renal function was examined. The responders had a better prognosis than the non-responders (p<0.05). There was a significant difference in the change in the estimated glomerular filtration rate between the responders and non-responders (p<0.05), even in patients with renal dysfunction before CRT (p<0.01). Prescriptions of angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers (ACEI/ARB) were 100% in the CRT responders and 60% in the non-responders (p<0.05). Up-titration of β-blockers could be significantly achieved in the CRT responders compared with the non-responders (p<0.05). Conclusions Preservation of renal function was observed in the responders to CRT, even in patients with renal dysfunction. Prescription of ACEI/ARB and up-titration of β-blockers increased in the CRT responders. These results may contribute to the beneficial effects of CRT.
社団法人日本循環器学会の論文
2008-10-20

Preservation of Renal Function in Response to Cardiac Resynchronization Therapy

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