Which of the following is an indication for the use of helium-O2 mixtures?
a. Large-airway obstruction
b. Small-airway obstruction
c. Restrictive diseases
d. Physiologic shunting
Q. 2 To prevent an adverse rebound effect when withdrawing NO therapy, what should you do?
1. Reduce the NO to the lowest effective dose (ideally, less than 5 ppm).
2. Hyperoxygenate the patient just before discontinuing NO.
3. Ensure that the patient is hemodynamically stable.
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2, and 3
Q. 3 Potential adverse effects associated with NO therapy include which of the following?
1. Poor or paradoxical response
2. Increased blood clotting
3. Increased left ventricular filling pressures
4. Rebound hypoxemia or pulmonary hypertension
a. 1 and 3 only
b. 1, 3, and 4 only
c. 2 and 4 only
d. 1, 2, 3, and 4
Q. 4 Which of the following are true about NO2?
1. NO2 levels greater than 10 ppm can cause hemorrhage, pulmonary edema, and death.
2. NO2 is produced spontaneously whenever NO is exposed to O2.
3. The Occupational Safety and Health Administration (OSHA) safety limit for NO2 exposure is 5 ppm.
4. NO2 exposure should be kept below 5 ppm during NO administration.
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
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