10 Random Questions
In the operating room
- (A) conductive floors are necessary for electrical safety
- (B) the ECG monitor may be used as a grounding source
- (C) an improperly grounded electrocautery causes ventricular fibrillation
- (D) an isolation transformer offers no protection against microelectrocution
- (E) a line isolation monitor will interrupt power automatically if excessive leakage to ground is detected
Following axillary block for insertion of an arteriovenous fistula in the forearm, a patient has pain on surgical incision. Which of the following nerves should be blocked to relieve this pain?
- (A) Axillary
- (B) Median
- (C) Musculocutaneous
- (D) Radial
- (E) Ulnar
The graphs shown illustrate various respiratory patterns in a patient who is breathing spontaneously with continuous positive airway pressure. Which of the following patterns is associated with the LEAST work of breathing?
- (A) 1
- (B) 2
- (C) 3
- (D) All patterns are associated with equal work
- (E) There is not enough information to answer the question
If minute ventilation is held constant, which of the following is LEAST likely to alter PaCO2?
- (A) General anesthesia
- (B) Hypothermia
- (C) Increased dead space
- (D) Increased pulmonary shunt
- (E) Induced hypotension
A 72-year-old man has massive venous hemorrhage during a radical prostatectomy. Blood pressure decreases from 110/60 to 75/30 mmHg and central venous pressure decreases from 12 to 4 mmHg. End-expiratory carbon dioxide tension decreases from 34 to 24 mmHg during constant minute ventilation. The most appropriate next step should be to
- (A) apply positive end-expiratory pressure to the breathing circuit
- (B) attempt to aspirate air from the central venous catheter
- (C) expand intravascular volume
- (D) place the patient in the Trendelenburg position
- (E) turn the patient to the left lateral decubitus position
A patient who had liver transplantation two years ago now requires general anesthesia for ENT surgery. Minimal rejection has occurred on a regimen of cyclosporine and prednisone. Which of the following is most likely?
- (A) Hypoalbuminemia
- (B) Hypocalcemia
- (C) Episodic hypoglycemia
- (D) Increased serum creatinine concentration
- (E) Prolonged prothrombin time
Each of the following statements about pheochromocytoma is true EXCEPT:
- (A) Preoperative administration of alpha-adrenergic inhibitors will usually reverse EKG changes due to catecholamine myocarditis
- (B) Preoperative administration of alpha-adrenergic inhibitors decreases operative mortality
- (C) Beta-adrenergic inhibitors should be administered preoperatively only in conjunction with alpha-adrenergic inhibitors
- (D) Vasopressor therapy may be necessary postoperatively for treatment of hypotension
- (E) Nasal congestion is a sign of inadequate alpha-adrenergic block
Each of the following is a characteristic of prostaglandin E1 (alprostadil) pharmacology in an infant EXCEPT:
- (A) It is effective in the treatment of large left-to-right shunts
- (B) It is a cause of apnea
- (C) It is a potent vasodilator
- (D) It prevents closure of the ductus arteriosus
- (E) It is metabolized rapidly
If administered prior to induction of anesthesia, which of the following drugs is most likely to cause tachycardia?
- (A) Fentanyl
- (B) Meperidine
- (C) Midazolam
- (D) Morphine
- (E) Sufentanil
A 23-year-old man who is receiving his first anesthetic has not resumed spontaneous ventilation two hours after receiving succinylcholine. The train-of-four monitor shows no twitch response. Which of the following is the most likely cholinesterase genotype in this patient?
- (A) Atypical : atypical
- (B) Fluoride-resistant : fluoride-resistant
- (C) Fluoride-resistant : silent
- (D) Normal : normal
- (E) Normal : silent