10 Random Questions
A 75-year-old man in the PACU complains of severe pain following thoracotomy. Respiratory rate is 30/min; arterial blood gas values are PaO2 70 mmHg, PaCO2 56 mmHg, and pH 7.28 at an FiO2 of 0.6. The patient has a thoracic epidural catheter and received epidural morphine 2 mg 45 minutes earlier. Which of the following is the most appropriate immediate management?
- (A) Intravenous administration of naloxone
- (B) Epidural administration of additional morphine
- (C) Epidural administration of 0.125% bupivacaine
- (D) Epidural administration of fentanyl
- (E) Intubation of the trachea
Which of the following is the most likely effect of infrarenal cross clamping of the aorta without pharmacologic manipulation?
- (A) Decreased cardiac output
- (B) Decreased pulmonary artery occlusion pressure
- (C) Increased left ventricular stroke volume
- (D) Increased renal blood flow
- (E) Improved myocardial oxygen supply-demand ratio
Which of the following time concentration curves would be expected in arterial blood following intravenous injection of indocyanine green dye in a 3-year-old child with a small ventricular septal defect?
In patients with renal failure, which of the following muscle relaxants has the most prolonged elimination half-life?
- (A) Atracurium
- (B) Pancuronium
- (C) Succinylcholine
- (D) d-Tubocurarine
- (E) Vecuronium
A previously healthy 28-year-old woman scheduled for laparoscopic tubal ligation becomes, agitated and refuses to undergo the procedure after being brought to the operating room. This behavior most likely resulted from preoperative administration of
- (A) droperidol
- (B) cimetidine
- (C) atropine
- (D) meperidine
- (E) midazolam
Which of the following is the best method of pacing to improve cardiac output in a patient with third-degree heart block?
- (A) VOO
- (B) AOO
- (C) VVI
- (D) DVI
- (E) Transcutaneous
Which surface area of the upper extremity is most likely to be unanesthetized by an interscalene brachial plexus block?
- (A) Hypothenar eminence
- (B) Thenar eminence
- (C) Dorsolateral surface of the hand
- (D) Lateral aspect of the forearm
- (E) Lateral surface of the upper arm
A parturient received 1000 ml of dextrose 5% in lactated Ringer's solution 20 minutes prior to delivery. Ten minutes later her blood glucose concentration is 580 mg/dl. In this situation
- (A) the risk for fetal intraventricular hemorrhage is increased
- (B) the risk for neonatal hypoglycemia is increased
- (C) placental glucose transport is insulin dependent
- (D) the neonate should be given dextrose 50% in water if depressed at delivery
- (E) the mother should be given insulin prior to delivery
Which of the following is the most likely sequela of interscalene brachial plexus block?
- (A) Cervical epidural block
- (B) Hemidiaphragmatic paralysis
- (C) Pneumothorax
- (D) Seizure
- (E) Vocal cord paralysis
During surgery with a carbon dioxide laser, which inhaled gas mixture is LEAST likely to promote combustion of the endotracheal tube?
- (A) Oxygen 25%-helium 75%
- (B) Oxygen 25%-nitrogen 75%
- (C) Oxygen 25%-nitrous oxide 75%
- (D) Oxygen 50%-nitrogen 50%
- (E) Oxygen 50%-nitrous oxide 50%