10 Random Questions
Each of the following findings is characteristic of chronic reflex sympathetic dystrophy of the extremities EXCEPT
(B) bone demineralization
(E) warm skin
Which of the following statements concerning anesthetic management for MRIs is true?
(A) ECG wires are associated with patient burns
(B) Mechanical ventilation of the lungs is not feasible
(C) Monitors with ferromagnetic components may be used
(D) Oxygen analysis of inspired gas is inaccurate
(E) Pulse oximetry is not reliable near the MR scanner
A 37-year-old woman with pregnancy-induced hypertension develops oliguria two hours after cesarean delivery during epidural .anesthesia. Despite infusion of 2000 mL of crystalloid solution, urine output remains 10 mL/hr. Which of the following laboratory findings is most suggestive of acute tubular necrosis?
(A) Blood urea nitrogen level of 30 mg/dL
(B) Serum creatinine level of 1.2 mg/dL
(C) Urinary/plasma osmolality of 1:1
(D) Urinary sodium level of 10 mEq/L
(E) Urinary specific gravity of 1.024
A 58-year-old woman with rheumatoid arthritis and hyperactive gag reflex requires awake intubation prior to cervical spine stabilization. Which of the following regional nerve blocks is most appropriate?
(A) Deep cervical plexus
(B) Glossopharyngeal nerve
(C) Hypoglossal nerve
(D) Superior laryngeal nerve
(E) Trigeminal nerve
The decreased duration of action of an intravenous dose of fentanyl compared with an intravenous dose of morphine is best explained by
(A) greater lipid solubility
(B) increased hepatic metabolism
(C) less protein binding
(D) shorter elimination half-life
(E) smaller volume of distribution
Tingling in the fifth finger during spinal anesthesia is associated with anesthesia at which of the following dermatomes?
Which of the following is the most appropriate pharmacologic therapy for trigeminal neuralgia?
After weaning from cardiopulmonary bypass following mitral valve replacement, a patient's cardiac output is reported to be 3.7 L/min measured by thermodilution technique using 5% dextrose in water 10 ml at room temperature as injec-tate. This value could be falsely high if
(A) normal saline solution were mistakenly used
(B) the patient's hematocrit were still 25%
(C) only 9.0 ml of injectate were used
(D) atrial fibrillation were present
(E) the room were excessively cold
Which of the following laboratory studies is the best indicator of reversal of the effects of warfarin?
(A) Activated clotting time
(B) Activated partial thromboplastin time
(C) Bleeding time
(D) Plasma fibrinogen concentration
(E) Prothrombin time
Alveolar and inspired anesthetic concentrations equilibrate more rapidly with nitrous oxide than with desflurane because nitrous oxide
(A) has a higher vapor pressure
(B) has a lower blood gas solubility
(C) has a lower MAC
(D) is delivered at a higher inspired concentration
(E) produces a second gas effect