AlligationUse alligation to determine the parts of each strength of the components needed in each equation. How much of 20% lidocaine and 30% lidocaine are needed to make 500 mL of a 28% concentration?
What will be an ideal response?
1 part 20% and 4 parts 30%
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You are transporting an elderly female who fell in a nursing home and displays outward rotation of her left leg. She has a lengthy medical history, including dementia. Currently, she is very quiet and receiving oxygen through a nasal cannula at 6 liters per minute. She also is secured to a long spine board. During your reassessment, you note her to be alert but confused, with slightly accelerated respirations and a strong radial pulse. You also note that her SpO2 has dropped from 97% on scene to 91%. You should:
A) Perform a head-tilt, chin-lift maneuver B) Request ALS assistance C) Apply supplemental oxygen D) Start positive pressure ventilation
When the supply of oxygen in the blood is low, the skin looks rather pale or ____.
A. pink B. rosy C. yellow D. bluish E. amber