Anesthesia Hub -

10 Random Questions

Which of the following laboratory studies is most reliable in differentiating prerenal azotemia from acute tubular necrosis?

(A) Creatinine clearance
(B) Fractional excretion of sodium
(C) Urine/plasma urea ratio
(D) Urine sodium content
(E) Urine specific gravity

A patient has an anterior neck injury, hoarseness, labored respirations, subcutaneous emphysema, and laryngeal crepitus following a motor vehicle accident. Which of the following is the best method of securing the airway in this situation?

(A) Blind nasotracheal intubation
(B) Lightwand intubation
(C) Retrograde wire-guided intubation
(D) Tracheostomy
(E) Transtracheal jet ventilation

A 55-year-old man has quadriplegia after undergoing suboccipital craniotomy in the sitting position for treatment of acoustic neuroma. Which of the following is the most likely cause?

(A) Air embolism with the presence of a probe-patent foramen ovale
(B) Compression of the cervical cord related to neck flexion
(C) Jugular venous obstruction
(D) Postoperative tension pneumocephalus
(E) Sustained elevation of cerebral perfusion pressure

ADVANCED Neuro

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

BASIC Pharmacology & Pharmacokinetics

In a 5-kg boy with Treacher Collins syndrome who is to undergo cleft palate repair, endotracheal intubation is best accomplished with

(A) awake nasal intubation after topical anesthesia
(B) halothane anesthesia with spontaneous ventilation
(C) light isoflurane anesthesia and a muscle relaxant
(D) thiopental and succinylcholine sequence intravenously
(E) nasal intubation after administration of ketamine intramuscularly

ADVANCED Pediatric

Delirium produced by high doses of atropine can be reversed by intravenous injection of

(A) diphenhydramine
(B) flumazenil
(C) naloxone
(D) neostigmine
(E) physostigmine

BASIC Pharmacology & Pharmacokinetics

The fail-safe mechanism on an anesthesia machine is activated by

(A) a wall-oxygen pressure of less than 25 psi
(B) a disconnection between the endotracheal tube and the machine
(C) a nitrous oxide concentration in excess of 85%
(D) an incompetent expiratory valve
(E) no oxygen flow

BASIC Equipment & Physics

Postoperatively a 70-kg patient has a serum sodium value of 130 mEq/L. To increase this value to 140 mEq/L would require the administration of how much sodium in mEq?

(A) 140
(B) 250
(C) 420
(D) 600
(E) 740

BASIC Transfusions & Fluids

Which of the following is the most likely adverse effect of prolonged intravenous administration of nitroglycerin?

(A) Cyanmethemoglobinemia
(B) Hemolysis
(C) Methemoglobinemia
(D) Neutropenia
(E) Thrombocytopenia

BASIC Pharmacology & Pharmacokinetics

Which of the following will result in the largest change in oxygen content?

(A) Increased hemoglobin (Hgb) concentration from 10 to 15 g/dl
(B) Increased PaO2 from 40 to 50 mmHg (Hgb 15 g/dl)
(C) Increased PaO2 from 60 to 70 mmHg (Hgb 15 g/dl)
(D) Increased P50 of Hgb from 27 to 37 mmHg (Hgb 15 g/dl)
(E) Increased pH from 7.20 to 7.40

BASIC General