Normal and High Cardiac Output Borderline Hypertension
نویسندگان
چکیده
30. Spann JR Jr, Mason DT, Zelis RF: The altered performance of the hypertrophied and failing heart. Am J Med Sci 258: 291, 1969 31. Mehmel HC, Mazzoni S, Krayenbuehl HP: Contractility of the hypertrophied human left ventricle in chronic pressure and volume overload. Am Heart J 90: 236, 1975 32. Williams JF Jr, Potter RD: Normal contractile state of hypertrophied myocardium after pulmonary artery constriction in the cat. J Clin Invest 54: 1266, 1974 33. Sasayama S, Ross J Jr, Franklin D, Bloor CM, Bishop S, Dilley RB: Adaptations of the left ventricle to chronic pressure overload. Circ Res 38: 172, 1976 34. Karliner JS, Williams D, Gorwit J, Crawford MH, O'Rourke RA: Left ventricular performance in patients with left ventricular hypertrophy due to systemic arterial hypertension. Br Heart J 39: 1239, 1977 35. Cooper G IV, Puga FJ, Zujko KJ, Harrison CE, Coleman HN III: Normal myocardial function and energetics in volumeoverload hypertrophy in the cat. Circ Res 32: 140, 1973 36. Ross J Jr: Adaptations of the left ventricle to chronic volume overload. Circ Res 35 (suppl II): 11-64, 1974 37. LeWinter M, Engler R, Van Nyhuis L, Karliner J: Effects of increased arterial pressure on left ventricular systolic function in conscious dogs with chronic volume overload. Circulation 56 (suppl III): 111-53, 1977 38. Ross J Jr: Afterload mismatch and preload reserve: a conceptual framework for the analysis of ventricular function. Progr Cardiovasc Dis 18: 255, 1976
منابع مشابه
Borderline hypertension: relationship between age, hemodynamics and circulating catecholamines.
The relationships between age, systemic and renal hemodynamics, circulating catecholamines (norepinephrine, epinephrine and dopamine) and intravascular volumes were studied in 38 normotensive subjects and in 77 patients with borderline essential hypertension. Borderline hypertensive patients had a higher cardiac index (p less than 0.02) and renal blood flow (p less than 0.05) than normotensive ...
متن کاملInteraction between renin and the autonomic nervous system in hypertension.
The abnormal distribution of plasma renin values described in established essential hypertension are also found in patients with very early, borderline hypertension. In established hypertension, renin values have been used to draw inferences about the pathophysiology of blood pressure elevation. Within this concept, the low-renin state is considered a volume-dependent (volume expanded) form of ...
متن کاملHemodynamic responses to tilt and beta-adrenergic blockade in young patients with borderline hypertension.
SUMMARY Seventeen young patients with b9rderline hypertension (one female) and 18 normo-tensive paid volunteers (two females) were studied at rest and in the tilted position after 10 min of 450 head-up tilt. Cardiac output, heart rate, and intra-arterial pressure were recorded. The measurements at rest and during the tilt were repeated after beta-adrenergic blockade with propranolol. By compari...
متن کاملAutonomic nervous system dysregulation in human hypertension.
An increased sympathetic drive combined with decreased parasympathetic inhibition is found in patients with borderline hypertension, who characteristically have rapid heart rates, high cardiac output and relatively normal vascular resistance (hyperkinetic state). In established hypertension, cardiac output is normal, vascular resistance is elevated and signs of increased sympathetic drive are a...
متن کاملHemodynamic studies in patients with borderline blood pressure elevation.
Ninety-four patients with occasionally elevated (borderline) blood pressure, 61 patients with asymptomatic established hypertension, and 63 normal subjects have been studied at rest and during a progressive exercise test on a cycle ergometer. Subjects with borderline blood pressure had increased cardiac output in the resting recumbent position, but this was not maintained in the sitting positio...
متن کاملBorderline hypertension and obesity: two prehypertensive states with elevated cardiac output.
Systemic, renal and splanchnic hemodynamics, intravascular volume, circulating catecholamine levels and plasma renin activity were compared in 39 patients with borderline hypertension and 28 normotensive subjects, who were less than 5% (n = 42, lean patients) or more than 40% overweight (n = 25, obese patients). Lean borderline hypertensive patients had greater cardiac output (p less than 0.05)...
متن کامل