10 Random Questions

During anesthesia with nitrous oxide 65% in oxygen, fentanyl, and pancuronium, nitroprusside is administered to decrease arterial pressure to 85/50 mmHg. A decrease in PaO2 from 120 to 65 mmHg is most likely caused by

BASIC Pharmacology & Pharmacokinetics

A 48-year-old woman underwent a posterior fossa craniotomy in the sitting position. Monitoring included precordial Doppler, arterial blood pressure, central venous pressure (CVP), and urine output. Furosemide was used intraopera-tively for cerebral decompression, and the operation was uneventful. In the recovery room, she was awake with stable vital signs when the CVP suddenly increased from 6 to 25 mmHg without any change in blood pressure. Shortly thereafter, premature ventricular contractions are noted. After administering lidocaine 1 mg/kg intravenously, the most appropriate action is to

ADVANCED Neuro

Coughing that occurs during awake intubation is prevented by local anesthetic block of which of the following nerves?

ADVANCED Regional & Pain

An anesthetized patient in the sitting position has a mean arterial pressure of 80 mmHg measured with a transducer placed at the level of the heart. Mean cerebral arterial pressure 20 cm above the transducer is

Twenty minutes after thiopental induction for femoral herniorrhaphy, a 34-year-old woman is breathing spontaneously and receiving nitrous oxide-oxygen (2 liters each) and enflurane 3% by face mask. Pulse is 90 bpm, blood pressure is 80/60 mmHg, end-tidal enflurane concentration is 2%, and end-tidal carbon dioxide tension is 48 mmHg. Which of the following is most likely to occur on skin incision?

BASIC General

Which of the following relationships is indicated by the curve illustrated in the graph shown?

During laser excision of vocal cord polyps in a 5-year-old boy, dark smoke suddenly appears in the surgical field. The trachea is intubated and anesthesia is being maintained with halothane, nitrous oxide, and oxygen. The most appropriate initial step is to

ADVANCED Equipment & Physics General Pediatric

During anesthesia with nitrous oxide, oxygen, and a relaxant, the patient's lungs are being mechanically ventilated and there is a heated humidifier in the circuit. The most likely cause of an apparent increase in inspired oxygen concentration is

BASIC Equipment & Physics

Which of the following statements concerning cerebral vasospasm following intracranial hemorrhage is true?

Which of the following statements concerning awareness (recall) during opioid anesthesia is true?

BASIC General