Anesthesia Hub -

10 Random Questions

A patient who is paraplegic secondary to spinal cord transection at T3 develops bradycardia and facial flushing during a nephrectomy under general anesthesia with nitrous oxide, fentanyl, and atracurium. The most likely cause of this response is

(A) release of histamine
(B) stimulation of the carotid sinus
(C) release of prostaglandins
(D) vagal response to peritoneal traction
(E) release of epinephrine

ADVANCED General

Leakage current and microshock hazards are eliminated by

(A) an isolation transformer
(B) conductive flooring
(C) a three-wire grounding system
(D) a line-isolation monitor
(E) none of the above

BASIC Equipment & Physics

Depression of cerebral oxygen requirements below the level required to create an isoelectric EEG can be achieved by

(A) administration of isoflurane
(B) administration of nimodipine
(C) barbiturate coma
(D) hyperventilation
(E) hypothermia

BASIC Neuro

Measurement of blood pressure with a Doppler device involves

(A) reflection of ultrasound waves off blood elements
(B) detection of oscillations in cuff pressure
(C) amplification of Korotkoff sounds with a miniature microphone
(D) transillumination with a near infrared light
(E) detection of variations in blood vessel diameter

BASIC Equipment & Physics

If both recurrent laryngeal nerves were severed during a difficult thyroidectomy for cancer, the most likely finding would be

{A) paralysis of the cricothyroid muscles
(B) cadaveric positioning of the true vocal cords
(C) anesthesia of both sides of the epiglottis
(D) bilateral pure adductor vocal cord paralysis
(E) stridor

ADVANCED Regional & Pain

If minute ventilation remains constant, a decrease in end-expiratory carbon dioxide concentration will occur with

(A) a decrease in physiologic dead space
(B) a decrease in cardiac output
(C) a decrease in physiologic shunt fraction
(D) the development of metabolic alkalosis
(E) an increase in body temperature

BASIC Respiratory & Critical Care

Nausea and vomiting in pediatric outpatients are

(A) directly related to postoperative pain
(B) unrelated to the length of the procedure
(C) eliminated by preoperative administration of droperidol
(D) eliminated by intraoperative nasogastric drainage
(E) more frequent than in adults

ADVANCED Pediatric

An obese, 35-year-old man had an episode of coughing followed by vomiting during induction of anesthesia for arthroscopy of the left knee. Intense wheezing developed bilaterally over five minutes. PaO2 is 60 mmHg, PaCO2 is 42 mmHg, and pH is 7.35. Optimal management following intubation of the trachea includes

(A) mechanical ventilation with positive end-expiratory pressure (PEEP), cancellation of surgery, and transfer to the intensive care unit
(B) saline lavage and continuation of surgery using halothane anesthesia
(C) cancellation of surgery and administration of corticosteroids and antibiotics
(D) thorough suctioning and proceeding with halothane anesthesia
(E) cancellation of surgery, vigorous mechanical ventilation, thorough suctioning, and administration of aminophylline

BASIC General

A healthy patient is receiving general endotracheal anesthesia with nitrous oxide 4 L/min, oxygen 2 L/min, and isoflurane 1% with spontaneous ventilation. The inspiratory breathing hose becomes disconnected from the inspiratory valve. The earliest alarm will be produced by

(A) a pulse oximeter with finger probe set to alarm at 60% saturation
(B) a mass spectrometer set to alarm when no breath is detected for 30 seconds
(C) an oxygen analyzer mounted on the inspiratory valve outlet and set to alarm at 25% oxygen concentration
(D) a capnograph sensor at the Y-piece that alarms when end-tidal carbon dioxide tension is greater than 60
mmHg

BASIC Equipment & Physics

Pancuronium blocks the bradycardic effect of fentanyl by a direct effect on

(A) beta-adrenergic receptors
(B) cardiac muscarinic receptors
(C) carotid baroreceptors
(D) central vagal nuclei
(E) sympathetic ganglia

BASIC Pharmacology & Pharmacokinetics