Random NCLEX shit

• assess for circulation to hand via both ulnar and radial arteries.
• Pt squeezes hand in fist for 30 seconds. occlude both arteries with fingers, pt opens hand (should be blanched).  release arteries, color should return in <7 seconds (positive)
• If negative, arteries are not patent, don't poke!

the ratio of density of urine to density of water

• water =1.000
• SG = 1.002-1.03

2.5-4.5

direct measurement of the blood pressure in the right atrium and vena cava

Normal =4-11 cm H₂0