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Journal Article
Research Support, Non-U.S. Gov't
Changes in left ventricular size, wall thickness, and function in anemic patients treated with recombinant human erythropoietin.
American Heart Journal 1992 August
Left ventricular size and function were evaluated in 15 anemic chronic hemodialysis patients before and after the administration of recombinant human erythropoietin (rHuEPO). All patients were studied with two-dimensional and M-mode echocardiographic examinations before the initiation of rHuEPO (T1) and at 28 +/- 7 weeks of rHuEPO therapy (T2). The two-dimensional targeted M-mode echocardiographic measurements obtained were: end-diastolic dimension (EDD); end-systolic dimension (ESD); stroke dimension (SD); dimensional shortening (SD/EDD); systolic posterior wall thickness (PWs); diastolic posterior and interventricular septal thickness; end-systolic wall stress (ESWS); and left ventricular mass. Mean hematocrit in these patients increased almost 50%. The EDD decreased from a mean value (+/- SEM) of 6.41 +/- 0.33 to 4.93 +/- 0.21 cm (p less than 0.05). ESD decreased from a mean value of 4.16 +/- 1.2 to 2.77 +/- 0.06 cm (p less than 0.05). The calculated mean SD decreased slightly but not significantly from 2.21 +/- 0.69 to 2.19 +/- 0.60 cm. The calculated SD/EDD increased from a mean 0.35 +/- 0.09 to 0.44 +/- 0.07 (p less than 0.05). ESWS fell from 59.2 +/- 12.2 to 37.6 +/- 9.3 gm/cm2 (p less than 0.01), and left ventricular mass fell (p less than 0.05) from 347 +/- 15.2 to 227 +/- 59 gm. There was no significant difference in resting heart rate or systolic blood pressure between T1 and T2. The increase in dimension shortening reflects afterload reduction, as indicated by the fall in end-systolic wall stress.(ABSTRACT TRUNCATED AT 250 WORDS)
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