10 Random Questions
The hemodynamic changes shown would most likely result from infusion of
- (A) dopamine
- (B) epinepherine
- (C) dobutamine
- (D) norepinepherine
- (E) isoproterenol
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
Trimethaphan causes each of the following EXCEPT
- (A) cerebral vasodilation
- (B) urinary retention
- (C) pupillary cycloplegia
- (D) histamine release
- (E) potentiation of succinylcholine block
The action of dantrolene on skeletal muscle
- (A) occurs within the neuromuscular junction
- (B) alters electrical properties of the muscle membrane
- (C) does not result in muscle relaxation
- (D) decreases myoplasmic calcium concentration
- (E) results from competitive inhibition of caffeine
A 56-year-old woman with pulmonary fibrosis is scheduled for pneumonectomy. Which of the following parameters best predicts potential postoperative functional impairment?
- (A) Exercise tolerance
- (B) Flow-volume loop
- (C) Resting arterial blood gas values
- (D) Unilateral pulmonary artery occlusion pressure
- (E) Vital capacity and FEV,
Compared with fentanyl, alfentanil is characterized by
- (A) greater volume of distribution
- (B) greater lipid solubility
- (C) less protein binding
- (D) faster redistribution
- (E) longer terminal elimination phase
A subarachnoid block to a sensory level of the second thoracic dermatome is associated with each of the following EXCEPT
- (A) total sympathetic block
- (B) decreased gastrointestinal smooth muscle tone
- (C) bradycardia
- (D) relaxation of gastrointestinal sphincters
- (E) decreased renal blood flow
A 70-kg patient is anesthetized for a craniotomy in the sitting position. Minute ventilation through a circle system is 15 L/min; PetC02 is 65 mmHg. Which of the following is the most likely cause of the increased PetC02?
- (A) Inadequate flow of fresh gas
- (B) Incompetent expiratory valve
- (C) Intubation of the right mainstem bronchus
- (D) Light anesthesia
- (E) Venous air embolism
Which of the following statements concerning propofol is true?
- (A) Active metabolites can produce residual postoperative sedation
- (B) It causes less cardiovascular depression than an equivalent induction dose of thiopental
- (c) It causes less respiratory depression than an equivalent induction dose of thiopental
- (D) It has analgesic properties
- (E) The vehicle emulsion is associated with hypersensitivity reactions
A 35-year-old patient with asymmetric septal hypertrophy (IHSS) is undergoing bladder suspension with sevoflurane 1%, nitrous oxide 50%, and oxygen 50%. Immediately after skin incision, blood pressure decreases to 90/60 mmHg and junctional tachycardia of 150 bpm is noted on the ECG. Which of the following is the most appropriate management?
- (A) Decreasing sevoflurane concentration
- (B) Infusion of nitroglycerin
- (C) Intravenous administration of a fluid bolus
- (D) Intravenous administration of esmolol
- (E) Intravenous administration of phenylephrine