If you want an uppercase A, you would hold down option and the u key, release and then type the letter A. Hold down option and u, release, and then type the letter e for an umlaut over a lowercase E. If you want an uppercase E, you would hold down option and the u key, release and then type the letter E.f you want an uppercase A, you would hold down option and the u key, release and then type the letter A. Hold down option and u, release, and then type the letter e for an umlaut over a lowercase E. If you want an uppercase E, you would hold down option and the u key, release and then type the letter E.
This allows direct comparison of the stroke volume index of large and small patients. Stroke volume index is determined by three factors: Preload: The filling pressure of the heart at the end of diastole. Contractility: The inherent vigor of contraction of the heart muscles during systole. Afterload: The pressure against which the heart must work to eject blood during systole. Starling's Law is the relationship between preload and stroke volume .
The factors that primarily determine the work of the heart include systolic blood pressure (BP), blood viscosity, and the volume of blood the myocardium has to pump. The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase. Because of the dependence of systemic arterial BP on cardiac output and TPR, if blood viscosity and TPR rise, systolic BP must then increase for cardiac output to be maintained.