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 |