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Published on: December 11, 2017
Recurrence of left ventricular hypertrophy following cessation of erythropoietin therapy
Aleksandar Sikole1, Momir Polenakovic, Vera Spiroska
1Department of Nephrology, Clinical Center, Medical Faculty, Vodnjanska, Skopje, Macedonia. asikole@freemail.org.mk
Insights
Erythropoietin (EPO) treatment in dialysis patients reversed left ventricular hypertrophy (LVH) by improving anemia. Stopping EPO therapy led to the return of LVH, indicating anemia
Area of Science:
- Cardiology
- Nephrology
- Hematology
Background:
- High cardiac output state is a primary driver of left ventricular hypertrophy (LVH).
- Increased left ventricular mass is a significant predictor of morbidity and mortality.
- Anemia is common in patients undergoing hemodialysis.
Purpose of the Study:
- To investigate the impact of erythropoietin (EPO) therapy on left ventricular mass in hemodialysis patients.
- To assess the reversibility of cardiac morphologic changes after EPO cessation.
Main Methods:
- 14 hemodialysis patients with hematocrit <28% received subcutaneous EPO for 1 year.
- Echocardiography was performed at baseline, 12 months, and 1 year post-EPO cessation.
- Key cardiac parameters including left ventricular mass, end-diastolic volume, and cardiac output were measured.
Main Results:
- EPO therapy significantly decreased left ventricular mass, end-diastolic volume, and cardiac output.
- Total peripheral resistance and mean arterial pressure showed significant changes during EPO treatment.
- Upon cessation of EPO, these cardiac parameters returned to baseline levels, indicating LVH reversibility.
Conclusions:
- Erythropoietin therapy effectively reduces left ventricular hypertrophy in dialysis patients by correcting anemia.
- Left ventricular hypertrophy in uremic patients is significantly influenced by anemia severity and is reversible.
- Anemia management is crucial for mitigating cardiac remodeling in hemodialysis patients.
Abstract:
The high cardiac output state is considered a major factor for occurrence of left ventricular hypertrophy (LVH). Increased left ventricular mass is a powerful predictor of morbidity and mortality. We analyzed morphologic changes of the heart in dialysis patients during treatment with erythropoietin (EPO) and after cessation of therapy. Fourteen hemodialysis patients were treated with EPO for 1 year. They were above age 18, dialyzed 3 times per week, and with a hematocrit below 28 vol%. EPO was given subcutaneously, at a dose of 20 U/kg body weight 3 times per week, before each hemodialysis session. Anemia was corrected and hematocrit maintained between 30 and 35 vol%. When this part of the study was completed, EPO was stopped in all 14 patients. Echocardiography was performed three times: at baseline, at 12 months of therapy, and 1 year after EPO cessation. Mean hematocrit of the group at these 3 time intervals was 23.78 +/- 2.11 vol%; 33.14 +/- 1.95 vol%; and 25.93 +/- 5.23 vol%, respectively (mean +/- SD). The following echocardiographic changes occurred. End-diastolic volume decreased from 134.8 +/- 25.4 to 113.2 +/- 26.4 ml and increased back to 136.2 +/- 46.2 ml. Left ventricular mass decreased from 296.6 +/- 62.4 to 225.2 +/- 52.7 g and increased again to 311.7 +/- 106 g. Cardiac output decreased from 7,295.8 +/- 2,166.9 to 5,816.4 +/- 1,216.2 ml/min and increased to 6,803.2 +/- 1,646.5 ml/min. Total peripheral resistance increased from 1,360.8 +/- 428 to 1,691.3 +/- 326 and decreased again to 1,242.8 +/- 303.3 dyne x s/cm5. All these changes were significant. Mean arterial pressure increased from 114.7 +/- 13.9 to 119.3 +/- 13.8 mm Hg and decreased to 100.5 +/- 9.3 mm Hg. LVH could be affected severely by the degree of anemia in uremics and was reversible.
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