#4.
Why is normal PaO2 100 mmHg? Barometric pressure (Pb)＝760 mm Hg Water vapor pressure(PH2O) ＝47 mm Hg Oxygen concentration 21 % PIO2 = 0.21*(760-47) =150 [mm Hg] P AO 2 100 mm Hg PACO2 40 mm Hg PpaO2 40 mm Hg PpaCO2 46 mm Hg PAO2=150-PACO2/RQ =150-40/0.8 =100 [mm Hg] PpvO2 100 mm Hg PpvCO2 40 mm Hg
#5.
Muhm JM, et al. Effect of aircraft-cabin altitude on passenger discomfort. N Engl J Med 2007; 357:18-27.
#6.
Muhm JM, et al. Effect of aircraft-cabin altitude on passenger discomfort. N Engl J Med 2007; 357:18-27. PAO2 = 0.21 *(Pb – PH2O)- PaCO2/RQ = 0.21 x (563-47)-40/0.8 = 0.21 x 516 – 50 = 108 – 50 = 58 If someone is hyperventilating, and PaCO2 is 32 PAO2 = 108 – 32/0.8 = 108 – 40 = 68
#7.
Question No. 1 How low PaO2 can the climbers tolerate on Mt. Everest? a. b. c. d. 19 to 30 mmHg 30 to 40 mmHg 40 to 50 mmHg 50 to 60 mmHg
#8.
Arterial blood gases and oxygen content in climbers on Mount Everest. Grocott MPW, et al. NEJM 2009; 360:140.
#9.
Arterial blood gases and oxygen content in climbers on Mount Everest. Grocott MPW, et al. NEJM 2009; 360:140.
#10.
• Hypoxemiaに耐えられるか • 酸素化の目標値設定 • 酸素の副作用
#11.
開始基準 SpO2<94% vs. SpO2<90%
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成人では
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• Hypoxemiaに耐えられるか • 酸素化の目標値設定 • 酸素の副作用
#29.
高酸素血症で 血管収縮
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