CH 10 GENERAL ANESTHETICS
All are contraindications for nitrous oxide administration except which of the following? A. Anxious patients B. Emotional instability C. Respiratory obstruction D. Chronic obstructive pulmonary disease
A
Adverse effects of the halogenated hydrocarbon general anesthetic halothane include all except which of the following? A. Hypotension B. Hypertension C. Hepatoxicity D. Cardiac depression E. Cardiac arrhythmias
B
All are important components of general anesthesia except which of the following? A. Loss of consciousness B. Respiratory paralysis C. Skeletal muscle relaxation D. Loss of pain sensation E. Good patient control
B
Guedel's stages and planes of anesthesia describe changes that occur during anesthesia. Which stage can be uncomfortable for the patient, when emesis and incontinence may occur? A. Stage I B. Stage II C. Stage III D. Stage IV
B
Modern anesthetic techniques use more rapidly acting agents than those associated with Guedel's stages. Flagg's stages reflect these agents and include all except which of the following? A. Induction B. Analgesia C. Maintenance D. Recovery
B
Which agent would be most effective for the surgical stage of general anesthesia? A. Midazolam B. Enflurane C. Nitrous oxide D. Levodopa
B
Which color is a nitrous oxide cylinder in the United States? A. White B. Blue C. Green D. Red
B
Diffusion hypoxia at the end of nitrous oxide administration can be prevented by A. Administering two aspirins at the end of treatment B. Administering an additional cartridge of local anesthetic C. Increasing the percentage of oxygen to 100% for 5 minutes D. Increasing the percentage of nitrous oxide to 100% for 5 minutes
C
Intravenously administered general anesthetics include all classifications of central nervous system depressants except which of the following? A. Opioids B. Benzodiazepines C. Prostaglandin inhibitors D. Ultrashort-acting barbiturates
C
The chronic abuse of nitrous oxide can induce neuropathy. These conditions include vision and hearing problems. A. Both statements are true. B. Both statements are false. C. The first statement is true; the second statement is false. D. The first statement is false; the second statement is true.
C
What is the major disadvantage to using opioids as adjunctive drugs to general anesthesia? A. Miosis B. Abuse potential C. Prolonged respiratory depression D. Decreased gastrointestinal motility
C
What is the minimal level of oxygen required for nitrous oxide fail-safe systems? A. 10% B. 20% C. 30% D. 40%
C
Which general anesthetic agent is unrelated to any other general anesthetic and has the advantage of allowing patients to "feel better" and ambulate sooner than with other agents? A. Enflurane B. Halothane C. Propofol D. Ketamine E. Morphine
C
Which of the halogenated hydrocarbon general anesthetics requires a special vaporizer and cannot be used for induction because it induces cough and laryngospasm? A. Enflurane B. Halothane C. Desflurane D. Sevoflurane E. Isoflurane
C
All of these drugs are used as part of balanced general anesthesia except which of the following? A. Nitrous oxide-oxygen B. Ultrashort-acting barbiturates C. Volatile inhalation anesthetics D. Long-acting barbiturates
D
Guedel's stages and planes of anesthesia describe changes that occur during anesthesia. Which stage is absolutely contraindicated because of severe respiratory depression leading to possible death? A. Stage I B. Stage II C. Stage III D. Stage IV
D
The potency of general anesthetic inhalation agents is measured by the blood/gas partition coefficient. The less soluble the anesthetic is in the body tissues, the more rapid the onset and recovery will be. A. Both statements are true. B. Both statements are false. C. The first statement is true; the second statement is false. D. The first statement is false; the second statement is true.
D
The properties that make nitrous oxide conscious sedation popular in dental offices include all except which of the following? A. Analgesia B. Antianxiety C. Ease of administration D. Long period of onset and recovery E. Short period of onset and recovery F. Retained consciousness and protective reflexes
D
Which general anesthetic agent can produce dissociative anesthesia? A. Enflurane B. Halothane C. Propofol D. Ketamine E. Morphine
D
Which is the limiting complication of the intravenous use of barbiturates? A. Vasodilation B. Hepatotoxicity C. Central nervous system stimulation D. Repeated dosing leads to prolonged recovery
D
For safe administration, levels of nitrous oxide required used for patient comfort should not exceed which of the following? A. 10% B. 20% C. 30% D. 40% E. 50%
E
Use of this halogenated hydrocarbon general anesthetic can provoke coughing but does not cause liver toxicity. Low tissue solubility allows for rapid induction and recovery, making it a useful and popular drug for general anesthetic. A. Enflurane B. Halothane C. Desflurane D. Sevoflurane E. Isoflurane
E
