10 Random Questions
Halothane
- (A) has no effect on reflex hypoxic pulmonary vasoconstriction
- (B) protects the myocardium from beta-adrenergic stimulation
- (C) has a direct, negative chronotropic effect on the sinoatrial node
- (D) metabolites decrease renal concentrating ability
- (E) is unsafe for use with epinephrine-containing local anesthetics
Which of the following drugs decreases lower esophageal sphincter tone?
- (A) Edrophonium
- (B) Glycopyrrolate
- (C) Metoclopramide
- (D) Prochlorperazine
- (E) Succinylcholine
Which of the following is most likely to occur during deliberate hypotension with trimethaphan?
- (A) Bronchoconstriction
- (B) Cerebral vasodilation
- (C) Increased heart rate
- (D) Potentiation of pancuronium
- (E) Pupillary constriction
A 27-year-old man with chronic renal failure is to undergo revision of an arteriovenous graft. He insists on general anesthesia. Hemodialysis was completed two hours ago, and serum potassium concentration is now 5 mEq/L. Which of the following statements concerning anesthetic management of this patient is true?
- (A) Enflurane is contraindicated
- (B) Succinylcholine is contraindicated
- (C) Neostigmine will be required in larger than usual dosage
- (D) The duration of action of atracurium will be prolonged
- (E) The duration of action of propofol will be unchanged
A 52-year-old woman undergoes facial surgery during general endotracheal anesthesia. The ventilator is set to deliver a tidal volume of 600 ml and a respiratory rate of 10/min at an FiO2 of 1.0. SpO2 is 100%, peak inspiratory pressure is 18 cmH2O, and PetCO2 is 40 mmHg. The surgeon flexes the patient's head so the chin touches the chest. Which of the following findings indicates that endobronchial intubation has NOT occurred?
- (A) Fluctuating capnographic waveform
- (B) Greater expiratory volume than inspiratory volume
- (C) Unchanged SpO2
- (D) Unchanged PetCO2
- (E) Unchanged peak inspiratory pressure
The plasma concentration of an intravenously administered drug follows the two-compartment kinetic model shown in the graph. Which of the following events is illustrated by the decline in plasma concentration shown at Time #2?
- (A) Decreasing activity of the drug at its receptor site
- (B) Distribution from plasma to tissue
- (C) Elimination of the drug from plasma
- (D) Increasing volume of distribution
- (E) Redistribution from vessel-rich groups to vessel-poor groups
A 65-year-old woman has respiratory distress and loss of consciousness immediately following superficial and deep cervical plexus block for right carotid endarterectomy. Which of the following is the most likely cause?
- (A) Phrenic nerve paralysis
- (B) Pneumothorax
- (C) Recurrent laryngeal nerve block
- (D) Subarachnoid injection
- (E) Vertebral artery injection
At extubation performed one week after nasotracheal intubation, each of the following is likely to occur EXCEPT
- (A) upper airway obstruction
- (B) aspiration after extubation
- (C) ulceration of vocal cords
- (D) tracheal stenosis
- (E) sinusitis
During a right lower lobe resection, SpO2 decreases from 99% to 70% after institution of one-lung ventilation. FiO2 is 1.0. The most appropriate management is to
- (A) administer an inhaled bronchodilator
- (B) apply continuous positive airway pressure to the right lung
- (C) apply positive end-expiratory pressure to the left lung
- (D) increase tidal volume
- (E) reinflate the right lung
Failure to block the musculocutaneous nerve adequately during the axillary approach to brachial plexus block will result in inadequate anesthesia of the
- (A) thumb and index finger
- (B) dorsum of the wrist
- (C) lateral aspect of the forearm
- (D) lateral aspect of the elbow
- (E) medial aspect of the upper arm