Anesthesia Hub -

10 Random Questions

In normal tissue, which property of drugs has the greatest effect on the speed of onset of a local anesthetic?

(A) Amide structure
(B) Degree of protein binding
(C) Intrinsic vasoconstrictor activity
(D) pKa
(E) Potency

A healthy 60-kg 52-year-old woman undergoing reduction mammoplasty is anesthetized with isoflurane and oxygen, and deliberate hypotension to 80/40 mmHg is induced with nitroprusside. Urine output through an indwelling urethral catheter has been 10 mL during the past hour. You should now

(A) administer furosemide 40 mg intravenously
(B) infuse normal saline solution until urine output reaches 35 mL/hr
(C) administer dopamine at 3 mcg/kg/min
(D) expect normal urine flow with restoration of normal blood pressure
(E) discontinue nitroprusside administration

BASIC General

Each of the following conditions causes resistance to nondepolarizing neuromuscular blockade EXCEPT

(A) chronic severe infections
(B) major burns
(C) myotonia congenita
(D) prolonged immobilization
(E) upper motor neuron injury

BASIC Pharmacology & Pharmacokinetics

The risk for airway fire during laser resection of a tracheal tumor is decreased by use of

(A) a CO2 laser rather than a YAG laser
(B) an inspired helium concentration greater than 60%
(C) an inspired nitrous oxide concentration greater than 60%
(D) a polyvinylchloride endotracheal tube
(E) halothane in the inspired mixture

ADVANCED Equipment & Physics

The primary mechanism for pharmacologic reduction of intraoperative blood loss is

(A) decreased blood viscosity
(B) decreased cardiac output
(C) decreased venous return
(D) direct myocardial depression
(E) hypotension

The development of tachycardia is most hazardous in patients with which of the following conditions?

(A) Aortic insufficiency
(B) Cardiac tamponade
(C) Mitral insufficiency
(D) Mitral stenosis
(E) Ventricular septal defect

Which of the following statements concerning banked blood is true?

(A) Red blood cells preserved with CPDA-1 have a shelf life of approximately 21 days
(B) Packed red blood cells deliver oxygen normally immediately after administration
(C) Packed red blood cells contain most of the leukocytes present in the donated unit
(D) Citrate is used as a source of energy for whole blood
(E) Stored whole blood contains all coagulation factors except II and VIII

BASIC Transfusions & Fluids

A 35-year-old woman with systemic lupus erythematosus is admitted to the critical care unit following sudden onset of severe chest pain. Examination shows tachycardia, hypotension, pulmonary edema, and a blowing systolic murmur in the left parasternal region. The most appropriate management is

(A) aerosol administration of terbutaline
(B) intravenous infusion of phenylephrine and nitroglycerin
(C) intravenous infusion of esmolol
(D) intravenous infusion of epinephrine and nitroprusside
(E) volume loading with lactated Ringer's solution

ADVANCED General

Pulmonary artery occlusion pressure

(A) does not reliably reflect left ventricular end-diastolic volume when left ventricular compliance is reduced
(B) inaccurately reflects left atrial pressure when left atrial pressure exceeds 15 mmHg
(C) is measured at end-inspiration in mechanically ventilated patients
(D) overestimates left atrial pressure in patients with poor lung compliance
(E) reflects left atrial pressure only if the catheter tip is located in zone II of the lung

ADVANCED Equipment & Physics General Cardiac

During apneic oxygenation (FiO2 1.0) through a rigid bronchoscope

(A) duration of the procedure is limited by the increase in PaCO2
(B) functional residual capacity decreases 5%/min
(C) PaO2 remains unchanged for the first 5 minutes
(D) PaCO2 increases 2 to 6 mmHg/min for 15 minutes and then reaches a plateau
(E) PaO2 and PaCO2 equilibrate with mixed venous gases at the same rate

BASIC Respiratory & Critical Care