What mode of pressure-controlled ventilation is designed to prevent alveoli with short-time con-stants from collapsing, thereby improving oxygenation?
a. Pressure-controlled inverse ratio ventila-tion
b. Pressure-controlled intermittent mandato-ry ventilation
c. Volume-assured pressure-supported venti-lation
d. Bilevel positive airway pressure
ANS: A
Because alveoli affected by ALI/ARDS have short-time constants, more time is allotted for in-spiration and less time is allotted for expiration.
You might also like to view...
Which of the following must be included on the prescription for a controlled substance?
a. The date of expiration of the drug and the physician’s DEA number b. The date prescribed and the patient’s name and address c. The date prescribed and the physician’s DEA number d. The date prescribed, the patient’s name and address, plus the physician’s DEA number
A perfectly efficient aerosol delivery device would theoretically have an L/T ratio of which of the following?
a. 0 b. 0.5 c. 0.75 d. 1.0
Which HIPAA standard requires providers and their business associates to put in place policies and procedures that ensure privacy of the health record?
A. Standard 1 B. Standard 2 C. Standard 3 D. Standard 4 E. Standard 5
The primary physiologic abnormality that causes diabetes is:
A. depletion of blood glucose. B. ineffective action of insulin. C. excessive glycogen production. D. cellular production of ketones.