The prognosis for patients with AKI is directly related to the cause of renal failure and, to a great extent, to the presence or absence of preexisting kidney disease (estimated GFR [eGFR] < 60 mL/min), as well as to the duration of renal dysfunction prior to therapeutic intervention.
Not only should you tip your hairdresser, you should also tip the person who washes your hair. Multiply the dollar amount of the bill by 0.15 if the service was good but not exceptional. One way to think of this is that for every dollar your hairdresser charges, you should tip him 15 cents.
Tip A Percentage Reflecting Service Quality. Etiquette gurus at the Emily Post Institute recommend tipping spa and salon professionals 15 to 20 percent of the cost of your facial. This scale can be adjusted based on the service quality, but a percentage-based tip should adequately reflect the overall quality of the establishment.