10 Random Questions


A 67-year-old man undergoes a perineal procedure under epidural anesthesia in the lithotomy position with extreme flexion of the thigh at the hip. No sedatives are used, and the surgery is uneventful. Forty-eight hours later, the patient cannot flex his left knee. Which of the following is the most likely cause?

BASIC Regional & Pain

Which of the following is the most likely cause of postural headache following spinal anesthesia?


Proper handling of oxygen cylinders includes

BASIC Equipment & Physics

Which of the following findings is most likely in a 3-year-old child who has a secundum-type atrial septal defect with a 2:1 left-to-right shunt?

ADVANCED Pediatric

A 73-year-old woman with a preoperative serum creatinine concentration of 2.1 mg/dl develops oliguria during enflurane anesthesia. Urine sodium concentration is 10 mEq/L and urine osmolality is 450 mOsm/L. The most likely cause of these findings is

BASIC Pharmacology & Pharmacokinetics

Which of the following is most likely to be effective in the treatment of clinically evident cerebral vasospasm occurring after subarachnoid hemorrhage?

ADVANCED Neuro

Pancuronium blocks the bradycardic effect of fentanyl by a direct effect on

BASIC Pharmacology & Pharmacokinetics

Which of the following statements concerning nalbuphine is true?


After termination of cardiopulmonary bypass, a patient who is chronically digitalized receives digoxin 0.5 mg in error. An ECG shows sinus bradycardia with intermittent sinus arrest; blood pressure is 90/60 mmHg. Which of the following drugs is contraiindicated in this patient?

ADVANCED Pharmacology & Pharmacokinetics Cardiac

A 70-kg patient experiences pain on incision of a thigh abscess. The area around the abscess had been infiltrated with 30 ml of 1% lidocaine in 1:200,000 epinephrine. The local anesthetic was most likely ineffective because of

BASIC Pharmacology & Pharmacokinetics Regional & Pain