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Table 1 List of measured variables in this study

From: The physiologic responses to a fluid bolus administration in old and young healthy adults

Variable Unit Description
Mean arterial pressure (MAP) mmHg Average blood pressure in an individual during a single cardiac cycle
Heart rate (HR) bpm Number of contractions of the heart per minute
Cardiac Output 9CO) L/min Product of heart rate and stroke volume
Systemic Vascular Resistance (SVR) (dyne*sec/cm.5) The resistance to blood flow offered by all of the systemic vasculature, excluding the pulmonary vasculature
Enddiastolic Volume (EDV) mL Volume of blood in the right and/or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole
Endsystolic Volume (ESV) mL Volume of blood in a ventricle at the end of contraction
Diastolic Function E/e’ Filling of the heart
Systolic Function Ejection Fraction (%) Volumetric fraction of fluid (usually blood) ejected from a chamber with each contraction
Urinary Output (UO) mL/kg Volume of urine per kilogram body weight and time
Extravascular Volume (EVV) mL/kg Fluid volume expansion that occurs outside of the vascular system
Plasma Volume mL/kg Total volume of blood
Capillary Filtration Coefficient (CFC) mL/min/mmHg Reflects both microvascular hydraulic conductivity and the number of perfused capillaries at a given moment
Colloid Osmotic Pressure in Plasma mmHg Form of osmotic pressure induced by proteins, notably albumin, in a blood vessel's plasma (blood/liquid) that causes a pull on fluid back into the capillary