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- W2004227366 abstract "Determination of STI in 54 untreated essential hypertensive subjects and 17 normal subjects revealed marked differences among three groups of patients. Those with borderline hypertension (29) had a short PEP and IVC periods (93 ± 2.1 and 28 ± 0.7 msec., respectively, p < 0.001) (mean ± S.E.) reduced PEPLVET (0.323 ± 0.009, p < 0.05) and increased DPIVC (3,484 ± 257 mm. Hg per second, p < 0.001). Among those with established hypertension, two groups of equal age and diastolic pressure were identified: nine with marked variations in blood pressure and a hyperkinetic heart clinically and 16 with fixed hypertension; none had cardiac or renal decompensation. Those with a hyperkinetic circulation had normal PEP, IVC, and PEPLVET despite a high diastolic pressure (122 ± 7.1 mm. Hg); DPIVC was elevated (3,651 ± 497 mm. Hg per second, p < 0.001) as in those with borderline hypertension. In contrast, the patients with fixed hypertension had longer PEP and IVC (p < 0.001), higher PEPLVET (p < 0.001), and normal DPIVC. Propranolol (10 mg. intravenously) slowed heart rate and prolonged PEP and IVC more in patients with a hyperkinetic circulation and in those with borderline hypertension than in those with fixed hypertension. These results suggest the presence of an increased cardioadrenergic drive not only in borderline hypertension, but also in a subgroup of patients with established hypertension. Left ventricular hypertrophy (ECG) was found in 1 out of 9 patients with hyperkinetic heart but in 6 out of 16 with fixed hypertension; cardiac index was high normal in the first group but reduced in the latter (3.32 vs 2.38 L./min./M.2, p < 0.001). This factor as determined by the systolic time interval might, therefore, be important in determining cardiac prognosis or planning therapy." @default.
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- W2004227366 date "1974-12-01" @default.
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- W2004227366 title "Cardioadrenergic factor in essential hypertension" @default.
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- W2004227366 doi "https://doi.org/10.1016/0002-8703(74)90282-8" @default.
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