10 Random Questions
The preanesthetic ECG trace (lead II) shown from a 32-year-old woman suggests
- (A) potential for tachyarrhythmia
- (B) need for preanesthetic atropine
- (C) myocardial ischemia
- (D) left bundle branch block
- (E) right ventricular hypertrophy
Compared with epidural morphine, intrathecal morphine produces
- (A) better relief of visceral pain
- (B) greater loss of analgesia after administration of naloxone
- (C) less pruritus
- (D) less urinary retention
- (E) more respiratory depression
An axillary block is administered to a 60-kg patient using 40 ml of 0.5% bupivacaine. Ten minutes after placement of the block, the patient has a seizure. Which of the following statements is true?
- (A) A low serum albumin concentration could have contributed to the occurrence of the seizure
- (B) CNS hypoperfusion is the most likely cause of the seizure
- (C) The seizure was probably secondary to an allergic reaction to the local anesthetic
- (D) The use of an equipotent dose of lidocaine rather than bupivacaine would have decreased the likelihood of
- the seizure
Maternal hyperventilation to a PaCO2 of 20 mmHg during labor can result in
- (A) decreased fetal trapping of local anesthetics
- (B) fetal metabolic acidosis
- (C) fetal respiratory acidosis
- (D) increased oxygen release at the placenta
- (E) uterine vasodilation
Which of the following statements concerning postherpetic neuralgia is true?
- (A) It is effectively treated with neurolytic surgery
- (B) It is effectively treated with sympathetic nerve blocks
- (C) Duration is three to four weeks
- (D) Hyperesthesia occurs in the affected area
- (E) It occurs predominantly in adolescents
A 32-year-old man with acute aortic regurgitation is scheduled to undergo emergency aortic valve replacement. Heart rate is 110 bpm, blood pressure is 90/35 mmHg, and pulmonary artery occlusion pressure is 14 mmHg. Cardiac index is 2.2 L/min/m2. Which of the following is the most appropriate management?
- (A) Administration of esmolol
- (B) Administration of a fluid bolus before induction
- (C) Infusion of dobutamine
- (D) Infusion of phenylephrine
- (E) Induction of anesthesia
A patient who is scheduled for emergency laparotomy for bowel obstruction has had oliguria for three hours. She has had hypertension for 10 years. Which of the following laboratory findings would indicate preoperative fluid challenge?
- (A) Urine osmolality: 300 mOsm/L
- (B) Urine specific gravity: 1.015
- (C) Urine sodium concentration: 35 mmol/L
- (D) Fractional excretion of sodium: 0.5
- (E) Ratio of urine-to-plasma creatinine concentrations: 8
Which of the following is the most likely cause of the coronary steal phenomenon?
- (A) Idiopathic hypertrophic subaortic stenosis (IHSS)
- (B) Decreased cardiac contractility
- (C) Dilation of coronary arterioles
- (D) Dilation of epicardial coronary arteries
- (E) Increased systemic vascular resistance
Which of the following statements concerning banked blood is true?
- (A) Red blood cells preserved with CPDA-1 have a shelf life of approximately 21 days
- (B) Packed red blood cells deliver oxygen normally immediately after administration
- (C) Packed red blood cells contain most of the leukocytes present in the donated unit
- (D) Citrate is used as a source of energy for whole blood
- (E) Stored whole blood contains all coagulation factors except II and VIII
The rate of induction with inhalational agents is more rapid in neonates than adults because of a relatively increased
- (A) cardiac output
- (B) cerebral blood flow
- (C) functional residual capacity
- (D) metabolic rate
- (E) minute ventilation