A surgical nurse is caring for a patient who is receiving isoflurane [Forane]. Which is true about this inhalation anesthetic?
a. Patients receiving isoflurane will not re-quire mechanical ventilation.
b. Postoperative nausea and vomiting are greater with isoflurane than with other inhalation anesthetics.
c. Propofol is used for induction to minimize cough prior to administering isoflurane.
d. This drug promotes greater relaxation of skeletal muscle than other inhalation anesthetics.
C
Isoflurane is a respiratory irritant with an unpleasant odor and can cause cough and breath-holding. Propofol is given for induction and then isoflurane is administered. Isoflurane causes respiratory depression, and mechanical ventilator support and enrichment of the gas mix-ture with oxygen are used. Postoperative nausea and vomiting may occur but are less likely than with other inhalation anesthetics. Isoflurane has a low degree of skeletal muscle relaxation, re-quiring the addition of another neuromuscular blocking agent.
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