Anesthesia Hub -

10 Random Questions

Which of the following best explains the decreased effect of hyperventilation on cerebral blood flow when PaCO2 decreases below 20 mmHg?

(A) Maximal constriction of cerebral vessels
(B) Decreased cerebral perfusion pressure
(C) Decreased cerebral metabolic rate for oxygen
(D) Increased cardiac output
(E) Increased cerebrospinal fluid pressure

BASIC Neuro

Which of the following is a respiratory effect of 1 MAC halothane?

(A) Decreased contribution of abdominal muscles to exhalation
(B) Decreased contribution of the chest wall to ventilation
(C) Decreased respiratory rate
(D) Decreased ratio of dead space to tidal volume
(E) Increased tidal volume

BASIC Pharmacology & Pharmacokinetics

The short clinical duration of action of a single dose of fentanyl is a result of its

(A) small volume of distribution
(B) large volume of distribution
(C) low lipid solubility
(D) rapid redistribution
(E) short elimination half-life

BASIC Pharmacology & Pharmacokinetics

During pulmonary artery catheterization, a 65-year-old man receives morphine 6 mg and scopolamine 0.4 mg intravenously. The pulse oximeter indicates desaturation, which quickly resolves with stimulation. When the drapes are removed, he has unilateral eye pain, decreased visual acuity, and dilated and irregular pupils. These eye symptoms are most likely caused by

(A) retinal hemorrhage
(B) morphine-induced oculogyric crisis
(C) corneal abrasion
(D) carotid artery embolization
(E) angle-closure glaucoma

BASIC Pharmacology & Pharmacokinetics

Halothane anesthesia is usually associated with an increase in

(A) cardiac contractility
(B) venous capacitance
(C) arterial pressure
(D) venous return
(E) heart rate

BASIC Pharmacology & Pharmacokinetics

An infant with congenital lobar emphysema is scheduled for thoracotomy. Which of the following should be included in the anesthetic management of this infant?

(A) Helium-oxygen inspired gas mixture
(B) Nitrous oxide administration
(C) Positive pressure ventilation
(D) Prophylactic placement of a chest tube
(E) Spontaneous ventilation until the chest is opened

ADVANCED Pediatric

Hemodilution is used during profound hypothermic cardiopulmonary bypass primarily because it

(A) decreases cold-induced coagulopathy
(B) decreases edema formation
(C) increases oxygen-carrying capacity of plasma
(D) increases oxygen dissociation from hemoglobin
(E) limits the cold-induced increase in blood viscosity

ADVANCED Cardiac

Compared with a patient without liver disease, a patient with cirrhosis will have

(A) greater accumulation of vecuronium with infusion
(B) increased unbound plasma vecuronium concentration
(C) more frequent occurrence of phase II block after succinylcholine administration
(D) prolonged elimination half-life of atracurium
(E) unchanged volume of distribution for pancuronium

BASIC Pharmacology & Pharmacokinetics

Severe nausea and vomiting in the PACU is most effectively treated with a drug that acts as an antagonist at which of the following receptors?

(A) Alpha-adrenergic
(B) Beta-adrenergic
(C) Dopamine
(D) GABA
(E) Glutamate

BASIC Pharmacology & Pharmacokinetics

Five minutes after intrathecal administration of tetracaine 12 mg in hyperbaric solution, a 60-year-old man has a weak hand grasp. Respirations are normal, heart rate has decreased from 80 to 45 bpm, and blood pressure has decreased from 150/80 to 90/50 mmHg. The most appropriate management at this time is

(A) administration of atropine
(B) administration of ephedrine
(C) administration of phenylephrine
(D) placement of the patient in the head-down position
(E) observation

ADVANCED Regional & Pain