10 Random Questions
Which of the following decreases the risk for burns during electrocauterization?
- (A) Conductive flooring
- (B) Grounding of the patient to the operating table
- (C) Increased resistance at the return electrode
- (D) Isolation of the current output of the electrosurgical unit
- (E) Placement of the return electrode at a distance from the surgical site
A patient undergoes differential spinal block for evaluation of persistent foot pain. If the pain returns coincident with a decrease in skin temperature, which of the following is the most appropriate conclusion?
- (A) A somatic origin is ruled out
- (B) The patient has causalgia
- (C) The patient has peripheral vascular disease
- (D) The pain is caused by central neuropathy
- (E) Lumbar sympathetic blocks are indicated
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
A jaundiced patient requires general anesthesia for portocaval shunt. He has a long history of alcohol abuse and is cirrhotic with ascites. Special considerations relevant to induction of anesthesia for this patient include each of the following EXCEPT:
- (A) Denitrogenation by mask may be more rapid than expected
- (B) The risk of aspiration is increased
- (C) The dose of thiopental necessary for induction will be predictably reduced
- (D) The duration of succinylcholine action may be prolonged
- (E) Alfentanil would be an appropriate supplement
Which of the following statements concerning the superior laryngeal nerve is true?
- (A) It provides sensory innervation to the subglottic surface of the vocal cord
- (B) It provides sensory innervation to the inferior surface of the epiglottis
- (C) It is a branch of the glossopharyngeal nerve
- (D) It is blocked by injection of anesthetic near the lateral portion of the cricothyroid membrane
- (E) It is the most commonly injured nerve during thyroid surgery
A combined epidural and general anesthetic is used for aortofemoral bypass surgery. Just prior to extubation, the patient received morphine 5 mg through the epidural catheter. Eleven hours later, he is unresponsive while breathing 40% oxygen from a face mask. Respiratory rate is 6/min and SpO2 is 92%. Arterial blood gas analysis shows PaO2 80 mmHg, PaCO2 84 mmHg, and pH 7.16. Which of the following statements concerning this patient is true?
- (A) Hypercarbia is contributing to the decreased level of consciousness
- (B) Naloxone is ineffective for reversing the respiratory depression
- (C) The oxygen saturation is higher than expected because of the pH
- (D) The risk for respiratory depression would have been lower with subarachnoid administration of 0.5 mg morphine
- (E) Residual local anesthetic is contributing to the respiratory depression
A 65-year-old patient receiving long-term clonidine therapy fails to take it one day before surgery. This would most likely
- (A) be beneficial, since clonidine decreases cardiac output
- (B) be of no consequence due to the long half-life of clonidine
- (C) produce a lower anesthetic requirement than if the drug had been continued
- (D) produce rebound hypertension
- (E) result in seizure activity
This flow-volume loop from a 57-year-old man is most consistent with which of the following conditions?
- (A) Bronchospasm
- (B) Decreased vital capacity
- (C) Myasthenia gravis
- (D) Narrowing of the upper airway
- (E) Pneumothorax
At the end of an anesthetic in which a nondepolarizing muscle relaxant was administered, the least number of receptors are blocked
- (A) after administration of neostigmine 5 mg and glycopyrrolate 1 mg
- (B) if the tetanus is sustained at 30 Hz
- (C) if the patient can sustain head lift for 5 sec
- (D) when the ratio of twitch height T1:T4 is 0.8
- (E) when tidal volume is normal
Which of the following inhalational anesthetics best relieves left ventricular outflow obstruction in a patient with hypertrophic obstructive cardiomyopathy (IHSS)?
- (A) Desflurane
- (B) Halothane
- (C) Isoflurane
- (D) Nitrous oxide
- (E) Sevoflurane