1 Capillary Refill: Push on the tip of the great toe or the nail bed until blanching occurs. 2  Then release and note how long it takes for the red color to return, a reflection of blood inflow to the distal aspect of the lower extremity. Pulses are rated on a scale ranging from 0 (not palpable) to 2+ (normal). 2  As with edema, this is very subjective and it will take you a while to develop a sense of relative values. 3  In the event that the pulse is not palpable, the doppler signal generated is also rated, ranging again from 0 to 2+.
Just how small is ânano?â In the International System of Units, the prefix nano means one-billionth, or 10-9; therefore one nanometer is one-billionth of a meter. The illustration below has three visual examples of the size and the scale of nanotechnology, showing just how small things at the nanoscale actually are.
Micrometer to nanometer conversion (um to nm) helps you to calculate how many nanometer in a micrometer length metric units, also list um to nm conversion table.