Patients with chronic hypoventilation disorders typically need a minimum of _________ hours of NIV to experience improved quality of life
a. 2-4
b. 4-6
c. 6-8
d. 8-10
ANS: B
Nocturnal use of NIV (4-6 hours) can have certain clinical benefits for patients with chronic hypoventilation disorders. The most significant of these are improvement of symptoms associated with chronic hypoventilation and an improved quality of life.
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Which are reasons for the high cost of health care?
A) The need to recruit, pay, and retain highly competent doctors and health professionals B) The cost of medical research to develop new drugs, devices, and medical procedures C) The rising cost of medical equipment, supplies, and utilities D) The need to construct, remodel, and maintain medical buildings E) The expense of training future doctors, nurses, and other health professionals F) All of the above
When incidence data is not available the most commonly used method for comparing rates as a ratio is the ____ ratio.
A. relative risk B. odds C. density D. prevalence