Physiological goals of artificial ventilatory support include which of the following? 1. Support or manipulate gas exchange. 2. Reduce or manipulate the work of breathing. 3. Increase lung volume
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2, and 3
ANS: D
The goals of mechanical ventilatory support are to maintain adequate alveolar ventilation and oxygen (O2) delivery, restore acid-base balance, and reduce the work of breathing with minimum harmful side effects and complications.
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Select the best statement from the following choices to describe the pathogenesis of PNH
a. Increased hemolytic episodes are produced as a result of complement binding to erythrocytes via IgG antibodies in cold temperatures. b. Increased hemolytic episodes are produced as a result of missing cell membrane proteins that regulate complement activation. c. Increased hemolytic episodes are produced as a result of missing enzymes necessary for ATP production in erythrocytes. d. Increased hemolytic episodes are produced as a result of initiation of an immune response against erythrocytes.
The purpose of toothbrushing includes:
A) Removal of plaque biofilm and disturbance of its reformation B) Removal of food, debris, and stain from the oral cavity C) Application of a dentifrice containing specific ingredients to address D) All of the above