The range of bacteria against which an agent is effective is known as its:
A. generation
B. antibacterial spectrum
C. antibiotic spectrum
D. gram-negative spectrum
b
Rationale: An antibacterial spectrum is the range of bacteria against which an agent is effective.
Health Professions
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Who introduced the use of soft rubber endotracheal tubes around 1930?
a. Davidson b. McGill c. Haight d. Murphy
Health Professions
Changes in the rate of cardiac contractions are affected primarily by changes in which of the fol-lowing?
a. Sympathetic or parasympathetic tone b. Ventricular afterload c. Ventricular contractility d. Ventricular preload
Health Professions