10 Random Questions
Which of the following findings would be considered normal in the EEG of an adult?
(A) Decreased frequency during induction with halogenated anesthetics
(B) Decreased frequency in frontal areas with administration of nitrous oxide 50%
(C) Dominance of beta rhythm at 20 to 30 Hz during the awake relaxed state
(D) Electrical silence with administration of isoflurane 2.5 MAC
(E) The presence of burst-suppression during natural sleep
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
General
Cardiac
Preoperative parenteral administration of vitamin K is LEAST likely to decrease a prolonged prothrombin time in a patient with
(A) end-stage hepatocellular disease
(B) malabsorption associated with ulcerative colitis
(C) obstructive jaundice
(D) long-term antibiotic therapy
(E) warfarin-induced prothrombin deficiency
Reveal Answer
In patients with head trauma, which of the following factors results in a return of arterial pH toward normal levels after two days of mechanical hyperventilation?
(A) Decreased renal absorption of hydrogen ions
(B) Decreased renal blood flow
(C) Increased PaCO2 with constant minute ventilation
(D) Increased renal excretion of bicarbonate ions
(E) Normalized cerebrospinal fluid pH
Reveal Answer
ADVANCED
General
Neuro
The highest serum fluoride levels are seen following the administration of which of the following volatile anesthetics?
(A) Desflurane
(B) Enflurane
(C) Halothane
(D) Isoflurane
(E) Sevoflurane
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Block of each of the following nerves is required for inguinal herniorrhaphy EXCEPT the
(A) genitofemoral
(B) iliohypogastric
(C) ilioinguinal
(D) obturator
(E) twelfth thoracic
Reveal Answer
ADVANCED
Regional & Pain
Ten minutes after induction of anesthesia with thiopental and isoflurane but before incision, a patient's nasopharyngeal temperature has decreased to 35.4°C. Which of the following contributed most to this decrease in temperature?
(A) Anesthesia-induced block of nonshivering thermogenesis
(B) Failure to use a warming blanket
(C) Infusion of room-temperature crystalloid
(D) Inhalation of room-temperature gases
(E) Mixing of peripheral and central blood
Reveal Answer
BASIC
General
Compared with thiopental, methohexital is characterized by
(A) better absorption after rectal administration
(B) greater protein binding
(C) greater hepatic clearance
(D) larger volume of distribution
(E) more complete biotransformation
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Which of the following statements is true concerning administration of 70% nitrous oxide to a patient with an unrecognized pneumothorax?
(A) Expansion of the pneumothorax by nitrous oxide occurs at a greater rate than expansion of bowel gas
(B) Expansion of the pneumothorax by nitrous oxide occurs at a linear rate
(C) The maximum expansion of a closed space occurs within 15 minutes
(D) The maximum concentration of nitrous oxide achievable within the pneumothorax is 35%
(E) The maximum increase in a closed gas-containing space is 100%
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Halothane
(A) has no effect on reflex hypoxic pulmonary vasoconstriction
(B) protects the myocardium from beta-adrenergic stimulation
(C) has a direct, negative chronotropic effect on the sinoatrial node
(D) metabolites decrease renal concentrating ability
(E) is unsafe for use with epinephrine-containing local anesthetics
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Which of the following statements best describes the decrease in functional residual capacity that accompanies the induction of general anesthesia?
(A) It does not change compliance
(B) It is greater with spontaneous ventilation than with controlled ventilation
(C) It is independent of body position
(D) It is not corrected by application of positive end-expiratory pressure
(E) It occurs within the first 10 minutes of anesthesia
Reveal Answer
BASIC
Respiratory & Critical Care
General