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- W2038965877 abstract "A simple, easily reproducible, noninvasive, provocative test for the assessment of early diastolic impairment in long-standing hypertension is presented. Volume challenge of the heart was produced by elevating the subject's legs to 45 degrees for 5 minutes, thus increasing the venous return to the right heart. Using gated radionuclide ventriculography and Fourier analysis, the atrial structures were delineated and time-activity curves were generated. Early diastolic emptying slope of the left atrium was used to assess left ventricular compliance changes in hypertensives. The left atrial early diastolic emptying rate was markedly reduced in 38 hypertensive patients (45.5 +/- 15.4 counts/s) when compared with 14 healthy subjects (78 +/- 16 counts/s). The legs-up procedure induced subsequent decrease in left atrial emptying rate in patients with long-standing hypertension and left ventricular hypertrophy (-27.4 +/- 11%). In patients with recent onset hypertension there was a depressed early diastolic emptying rate (55.79 +/- 10 counts/s), but a normal response to the legs-up procedure (an increase in left atrial emptying rate: 12.84 +/- 7%). Global ejection fraction was normal in all subjects studied, decreasing after induction of augmented venous return in long-standing hypertension. Reduction in left atrial early diastolic emptying rate, caused by the legs-up manoeuvre appears to be an early and sensitive indicator of the left ventricular diastolic impairment in essential hypertension." @default.
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- W2038965877 title "Early detection of diastolic impairment in long-standing hypertension by a noninvasive volume challenge method" @default.
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- W2038965877 doi "https://doi.org/10.1002/clc.4960080307" @default.
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