Effective Arterial Elastance in the Pulmonary Arterial Circulation
نویسندگان
چکیده
منابع مشابه
Effective arterial elastance as an index of pulmonary vascular load.
The aim of this study was to test whether the simple ratio of right ventricular (RV) end-systolic pressure (Pes) to stroke volume (SV), known as the effective arterial elastance (Ea), provides a valid assessment of pulmonary arterial load in case of pulmonary embolism- or endotoxin-induced pulmonary hypertension. Ventricular pressure-volume (PV) data (obtained with conductance catheters) and in...
متن کاملEffective arterial elastance is insensitive to pulsatile arterial load.
Effective arterial elastance (E(A)) was proposed as a lumped parameter that incorporates pulsatile and resistive afterload and is increasingly being used in clinical studies. Theoretical modeling studies suggest that E(A) is minimally affected by pulsatile load, but little human data are available. We assessed the relationship between E(A) and arterial load determined noninvasively from central...
متن کاملRelation of effective arterial elastance to arterial system properties.
Effective arterial elastance (E(a)), defined as the ratio of left ventricular (LV) end-systolic pressure and stroke volume, lumps the steady and pulsatile components of the arterial load in a concise way. Combined with E(max), the slope of the LV end-systolic pressure-volume relation, E(a)/E(max) has been used to assess heart-arterial coupling. A mathematical heart-arterial interaction model wa...
متن کاملSystemic arterial compliance, systemic vascular resistance, and effective arterial elastance during exercise in endurance-trained men.
Systemic arterial compliance (C) and vascular resistance (R) regulate effective arterial elastance (Ea), an index of artery load. Increases in Ea during exercise are due primarily to reductions of C and maintain optimal ventricular-arterial coupling. Because C at rest and left ventricular functional reserve are greater in endurance-trained (ET) compared with sedentary control (SC) humans, we hy...
متن کاملContribution of systemic vascular resistance and total arterial compliance to effective arterial elastance in humans.
The respective contribution of systemic vascular resistance (R) and total arterial compliance (C) to the arterial load remains to be established in humans. Effective arterial elastance (Ea), i.e., the left ventricular end-systolic pressure (LVESP)-over-stroke volume ratio, is a reliable estimate of arterial load. It is widely accepted that Ea mainly relates to mean aortic pressure (MAP) and thu...
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ژورنال
عنوان ژورنال: Circulation: Heart Failure
سال: 2020
ISSN: 1941-3289,1941-3297
DOI: 10.1161/circheartfailure.119.006591