10 Random Questions
A 40-year-old man who is scheduled to undergo repair of a tendon laceration of the left hand has complete anesthesia in the median, radial, and ulnar nerve distributions after supraclavicular block. Two hours of tourniquet inflation are required for completion of the procedure. The most appropriate next step is an additional block of which of the following?
- (A) Axillary nerve
- (B) Intercostobrachial nerve
- (C) Lateral antebrachial cutaneous nerve
- (D) Musculocutaneous nerve
- (E) Stellate ganglion
When evaluating a screening test, which of the following is the most appropriate term for the proportion of patients with a disease who have a positive test result?
- (A) Accuracy
- (B) Incidence
- (C) Selectivity
- (D) Sensitivity
- (E) Specificity
Depression of cerebral oxygen requirements below the level required to create an isoelectric EEG can be achieved by
- (A) administration of isoflurane
- (B) administration of nimodipine
- (C) barbiturate coma
- (D) hyperventilation
- (E) hypothermia
Which of the following nerves should be blocked for an operation at the medial aspect of the lower leg?
- (A) Femoral
- (B) Sciatic
- (C) Obturator
- (D) Common peroneal
- (E) Tibial
Which of the following statements concerning functional residual capacity is true?
- (A) It decreases linearly during a three-hour anesthetic
- (B) It decreases in pregnancy primarily because of a decrease in the expiratory reserve volume
- (C) It increases in patients with a history of heavy smoking
- (D) It increases with pulmonary contusions
- (E) It is smaller (ml/kg) in children than in adults
The cardiac rhythm illustrated appeared suddenly in an anesthetized patient. The most appropriate management is
- (A) administration of adenosine
- (B) administration of digoxin
- (C) administration of epinepherine
- (D) overdrive pacing
- (E) synchronous cardioversion
A 45-year-old woman who sustained a subarachnoid hemorrhage 18 hours ago develops a severe headache and becomes unresponsive. Which of the following is the most likely cause of this patient's change in mental status?
- (A) Cerebral edema
- (B) Cerebral embolism
- (C) Cerebral vasospasm
- (D) Hypertensive encephalopathy
- (E) Second subarachnoid hemorrhage
After brachial plexus block, a patient has sensation over the inner aspect of the upper arm. Block of which of the following nerves would obtund this sensation?
- (A) Intercostobrachial
- (B) Median
- (C) Musculocutaneous
- (D) Radial
- (E) Ulnar
A 30-kg patient with asthma is receiving general anesthesia and being mechanically ventilated with a measured tidal volume of 300 mL. Increasing the fresh gas flow from 3 L/min to 9 L/min without changing the ventilatory rate or I:E ratio will result in
- (A) decreased physiologic dead space
- (B) increased delivered tidal volume
- (C) increased end-expired carbon dioxide
- (D) unchanged delivered minute volume
- (E) unchanged peak inspiratory pressure
Addition of 20 cm H2O positive end-expiratory pressure to a patient receiving controlled mechanical ventilation decreases cardiac output and left ventricular function by
- (A) increasing right ventricular preload
- (B) increasing right ventricular afterload
- (C) increasing left ventricular preload
- (D) increasing left ventricular afterload
- (E) producing myocardial ischemia