If the curves of the posterior knees are not accurately positioned just above the bend of the "axial viewer" for a tangential knee projection (Merchant method), the
1. patellae may be projected into the patellofemoral joint spaces.
2. tibial tuberosities may be demonstrated within the joint spaces.
3. soft tissue from the anterior thighs is projected into the joint spaces.
4. knees are flexed more or less than 45 degrees.
a. 1 and 4 only
b. 1 and 2 only
c. 2 and 3 only
d. 1, 2, and 4 only
D
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What electrically powered device can separate the O2 in room air from N2, thereby providing an enriched flow of O2 for therapeutic use?
a. O2 concentrator b. O2-conserving device c. Joule-Thompson enricher d. Molecular impactor
The type of breath shown in the flow-volume loop below is which of the following?
a. Pressure support ventilation (PSV) b. Continuous positive airway pressure (CPAP) c. Pressure-controlled continuous mandatory ventilation (PC-CMV) d. Spontaneous without support
The doctrine of informed consent is the legal basis for advising patients regarding certain aspects of care. Under which of the following is this doctrine usually outlined?
A. local government regulations B. hospital policy C. state medical practice acts D. federal medical practice acts E. the American Medical Association
Which of the following mandated that employers provide comprehensive health insurance to workers?
A. National Health Bill B. Great Society C. Social Security Act of 1935 D. Health Security Act