To use an alligation grid to prepare 120g of hydrocortisone using a 1% ointment and 2.5% ointment, what information is still required?

Which of the following is necessary to assure comprehensive quality for helium dilution and ni-trogen washout testing?

1. The accuracy and precision of the volume or flow-measuring device must be assured. 2. The accuracy and linearity of the gas analyzer must be verified. 3. Leak test must be acceptable while monitoring change in volume and gas concentrations over at least a minute. 4. Corrections for hemoglobin (Hb) and COHb must be included. a. 2, 3, and 4 only b. 2 and 3 only c. 1, 3, and 4 only d. 1, 2, and 3 only

All of the following are signs and symptoms of presyncope EXCEPT:

A. pupil constriction. B. diaphoresis. C. piloerection. D. yawning.