10 Random Questions
The test dose of local anesthetic administered through an epidural needle or catheter should be sufficient to produce
- (A) bradycardia
- (B) seizure activity
- (C) hypotension
- (D) segmental analgesia
- (E) spinal anesthesia
The potency of an inhalational anesthetic correlates best with its
- (A) vapor pressure
- (B) blood/gas partition coefficient
- (C) molar volume
- (D) brain/gas partition coefficient
- (E) oil/gas partition coefficient
A 68-year-old woman is scheduled for a mastectomy. She has not taken prescription medications for 24 hours. Preoperative examination shows a heart rate of 104 bpm and blood pressure of 200/105 mmHg. The most likely cause of these findings is omission of which of the following drugs?
- (A) Amiodarone
- (B) Clonidine
- (C) Enalapril
- (D) Hydralazine
- (E) Nifedipine
A 62-year-old patient undergoes resection of a descending thoracic aneurysm under anesthesia with morphine, nitrous oxide, oxygen, and pancuronium. In spite of normal somatosensory evoked potentials (SSEP) during the procedure, the patient has paraplegia postoperatively. The factor most likely responsible for failure to note the deficit intraoperatively is
- (A) the effect of nitrous oxide on SSEP
- (B) the effect of morphine on SSEP
- (C) failure to test motor pathways
- (D) hyperventilation to a PaC02 of 30 mmHg
- (E) unintentional hypothermia to 34°C
Which of the following is the most common initial sign of hemolytic transfusion reaction during general anesthesia?
- (A) Bronchospasm
- (B) Diffuse bleeding
- (C) Fever
- (D) Hemoglobinuria
- (E) Hypotension
A patient is placed in the prone jackknife position for lumbar subarachnoid injection of tetracaine 10 mg in 10 ml of preservative-free sterile water. Which of the following results is most likely?
- (A) Respiratory insufficiency
- (B) Sensory and motor block at T4-S1
- (C) Sensory and motor block at L1-S5
- (D) Sensory loss without motor block at L1-S5
- (E) Sensory and motor block at S3-S5
During enflurane anesthesia for colectomy in a 75-year-old man with sepsis, urine output decreases to 10 ml/hr. Heart rate is 120 bpm, blood pressure is 100/50 mmHg, central venous pressure is 10 mmHg, and pulmonary artery occlusion pressure is 15 mmHg. The most appropriate management at this time is to
- (A) measure cardiac output
- (B) increase fluid administration
- (C) infuse dopamine
- (D) administer propranolol
- (E) switch from enflurane to isoflurane
A 64-year-old man is scheduled to have an elective right colon resection under nitrous oxide, oxygen, enflurane anesthesia. Following a myocardial infarction two years ago, a programmable VVI pacemaker was inserted for complete heart block. A pre induction rhythm strip is shown. Based on this EKG finding, the most appropriate action is to
- (A) proceed with induction of anesthesia
- (B) convert the pacemaker to the fixed rate mode
- (C) reprogram the pacemaker to increase R-wave sensitivity
- (D) increase the pacemaker current outpu
- (E) insert a temporary atrioventricular sequential pacemaker
Cerebral blood flow is decreased by
- (A) chronic respiratory acidosis
- (B) hypoxia
- (C) hypoglycemia
- (D) polycythemia
- (E) the postictal state
Miosis, incontinence, excess salivation, and convulsions are toxic effects of
- (A) amphetamines
- (B) phenothiazines
- (C) cocaine
- (D) tricyclic antidepressants
- (E) organophosphate insecticides