Anesthesia Hub -

10 Random Questions

The most likely cause of bilateral fixed and dilated pupils after clipping of a basilar artery aneurysm is

(A) preoperative administration of atropine
(B) intraoperative infusion of trimethaphan
(C) naloxone antagonism of opioid
(D) persistent hypothermia
(E) brain stem ischemia

ADVANCED Neuro

Microatelectasis 48 hours after abdominal surgery is most consistently manifested by

(A) decreased PaO2
(B) ground glass infiltrate on a roentgenogram of the chest
(C) scattered fine inspiratory rales
(D) increased PaCO2
(E) scattered areas of dullness to chest percussion

Each of the following conditions is associated with upregulation of the acetylcholine receptor at the neuromuscular junction EXCEPT

(A) burn injuries
(B) myasthenia gravis
(C) prolonged bed rest
(D) prolonged use of neuromuscular relaxants
(E) upper motor neuron injury

BASIC Pharmacology & Pharmacokinetics

Which of the following is a characteristic of phase II neuromuscular block?

(A) It is diagnosed by the intravenous administration of calcium
(B) It is potentiated by edrophonium
(C) It produces nondepolarizing train-of-four characteristics
(D) It requires evaluation for pseudocholinesterase deficiency
(E) It requires less succinylcholine than a phase I block

BASIC Pharmacology & Pharmacokinetics

Which of the following remains normal in an otherwise healthy patient with obesity?

(A) Alveolar PO2
(B) Expiratory reserve volume
(C) Functional residual capacity
(D) Lung compliance
(E) Static lung volumes

BASIC General

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

ADVANCED Respiratory & Critical Care

Each of the following values is associated with acute tubular necrosis EXCEPT

(A) urine osmolality of 200 mOsm/kg
(B) urine sodium concentration of 15 mEq/L
(C) urine specific gravity of 1.009
(D) urine/serum osmolarity ratio of 1.2
(E) fractional excretion of sodium of 4%

BASIC General

Which of the following is most likely to occur during mediastinoscopy?

(A) Chylothorax
(B) Compression of the innominate artery
(C) Injury to the superior laryngeal nerve
(D) Tracheal tear
(E) Venous air embolism

A patient undergoes thoracotomy in the lateral decubitus position. Which of the following maneuvers is most likely to increase PaO2 during one-lung ventilation?

(A) Applying continuous positive airway pressure to the nondependent lung
(B) Applying positive end-expiratory pressure to the dependent lung
(C) Increasing inspiratory flow rate
(D) Increasing the tidal volume
(E) Increasing the ventilatory rate

ADVANCED Respiratory & Critical Care General

A 2.8-kg 8-hour-old infant undergoes laparotomy for a ruptured omphalocele. Following primary closure of the abdominal wall, arterial blood gases are PaO2 40 mmHg (FiO2 0.6), PaCO2 55 mmHg, and pH 7.1. Blood pressure is 30/20 mmHg. After increasing the FiO2, the most appropriate action would be to

(A) obtain a radiograph of the chest immediately
(B) withdraw the endotracheal tube 1 cm
(C) assess the patient for coexisting congenital heart disease
(D) administer lactated Ringer's solution 15 ml/kg
(E) ask the surgeon to reopen the wound

ADVANCED Pediatric