Most insurance carriers require that a treatment plan be submitted prior to performing a

For which of the following purposes is a tracheal button appropriate? 1. Facilitate secretion removal. 2. Protect the airways from aspiration. 3. Relieve airway obstruction. 4. Aid in positive-pressure ventilation

a. 1 and 3 only b. 2 and 4 only c. 3 and 4 only d. 1, 2, 3, and 4

The chief source of error in kidney evaluation using the excretion rate of substance is:

A. The chemical method of analysis. B. The timing and completeness of collection. C. The test chosen for the evaluation. D. The day-to-day variation of renal function.