【白斬雞】評論

(D)閉氣10秒可以增加霧氣沉積20%-10％

【Liao Liao】評論

ABParticles 1 to 0.5μ are so stable that most remain in suspensionand are cleared with the exhaled gas, whereas particles smaller than 0.5μhave a greater retention rate in the lungs.CTurbulent flow patterns, obstructed or tortuous pathways, and inspiratory flow rates greater than 30 L/min are associated with increased inertial impaction。DA 10-second breath hold can increase aerosol deposition 10% and increase the ratio of aerosol deposited in lung parenchyma to central airway by fourfold.egan's P845