Damage to nerve cells without myelin sheaths is permanent, because regeneration of nerve cells can only happen when ________ cells are present

A respiratory therapist needs to deliver a bronchodilator with a small-volume nebulizer. To ensure that 70% of the medication is available for nebulization, _____ mL of fluid should fill the nebu-lizer

a. 3 c. 3.5 b. 5 d. 4

Which of the following may indicate a decrease in systemic vascular blood flow during high-frequency ventilation?

1. High central venous pressure (CVP) 2. Low CVP 3. Decreased mean arterial pressure (MAP) 4. Increased MAP a. 1 and 3 only b. 2 and 3 only c. 1 and 4 only d. 1, 2, 3, and 4