Anesthesia Hub -

10 Random Questions

A 55-year-old man who is scheduled to undergo carotid endarterectomy (CEA) has a persistent myocardial filling defect at three hours on a dipyridamole-thallium scan. Which of the following statements is correct?

(A) Coronary autoregulation is effective in this segment
(B) Coronary revascularization should precede CEA
(C) Isoflurane is contraindicated
(D) Myocardial infarction is impending
(E) There is a segment of nonviable myocardium

ADVANCED General Cardiac

Which of the following combinations of hemoglobin, blood gases, and cardiac output provides the greatest delivery of oxygen to tissue? (Hb, PaO2, SaO2, CO)

(A) 7.0 85 95 7.0
(B) 8.0 290 100 8.0
(C) 9.9 61 90 9.8
(D) 12.0 140 100 4.5
(E) 16.0 40 75 5.8

BASIC General

Which of the following is an effect of acetazolamide?

(A) Glucose intolerance
(B) Increased minute ventilation
(C) Metabolic alkalosis
(D) Sinus bradycardia
(E) Slowed intravenous anesthetic induction

ADVANCED Pharmacology & Pharmacokinetics

Which of the following statements concerning the cerebral effects of barbiturates is true?

(A) Barbiturate coma produces greater cerebral protection than hypothermia to 17 C
(B) Barbiturate-induced reduction in cerebral blood flow is greater at normocarbia than at hypocarbia
(C) Barbiturates decrease the cerebral metabolic rate for oxygen by decreasing cerebral blood flow
(D) Somatosensory evoked potentials and the EEG are equally sensitive to suppression by barbiturates
(E) When administered in doses sufficient to produce an isoelectric EEG, barbiturates decrease the cerebral metabolic rate for oxygen by 50%

Compared with blood anticoagulated with CPD, blood stored in CPDA-1 has

(A) better preservation of 2,3-DPG concentration
(B) better preservation of ATP concentration in erythrocytes
(C) shorter erythrocyte survival
(D) shorter shelf life
(E) decreased platelet aggregation

BASIC Transfusions & Fluids

During transurethral resection of the prostate under spinal anesthesia with a sensory level to T10, a patient has sudden onset of sharp upper abdominal pain and nausea. Arterial blood pressure increases from 120/80 to 150/90 mmHg; the patient becomes diaphoretic. Which of the following is the most likely diagnosis?

(A) Bladder perforation
(B) Hemolysis
(C) Hypervolemia
(D) Hyponatremia
(E) Myocardial ischemia

ADVANCED General

A patient with jaundice who has a minimally elevated SGOT (AST), markedly elevated alkaline phosphatase, and normal prothrombin time is to receive a muscle relaxant. Which of the following is most likely in this patient?

(A) Decreased intubating dose of pancuronium
(B) Increased intubating dose of atracurium
(C) Prolonged duration of succinylcholine effect
(D) Prolonged duration of vecuronium effect
(E) Shortened duration of d-tubocurarine effect

BASIC Pharmacology & Pharmacokinetics

Which of the following is the most frequent cause of hemorrhagic diathesis after administration of 20 units of CPD-stored blood over six hours?

(A) Disseminated intravascular coagulation
(B) Hypofibrinogenemia
(C) Low plasma concentrations of factors V and VIII
(D) Primary fibrinolysis
(E) Thrombocytopenia

BASIC Transfusions & Fluids

During application of continuous positive airway pressure, lung compliance increases because of

(A) decreased airway resistance
(B) decreased lung water
(C) decreased venous return
(D) increased intercostal muscle tone
(E) increased resting lung volume

BASIC Respiratory & Critical Care

A 46-year-old man is scheduled for repair of an inguinal hernia. Six years ago, he had an episode of malignant hyperthermia during cholecystectomy. Which of the following is the most appropriate perioperative management?

(A) Administration of a regional anesthetic
(B) Administration of dantrolene orally for two days prior to surgery
(C) Avoidance of all inhalational anesthetics except isoflurane
(D) Avoidance of ester local anesthetics
(E) Flushing the anesthesia machine with oxygen 10 L/min for a minimum of 12 hours

BASIC General Regional & Pain