10 Random Questions
Left ventricular subendocardial perfusion pressure is best estimated by the difference between
(A) mean arterial and central venous pressures
(B) diastolic arterial and pulmonary artery occlusion pressures
(C) mean arterial and pulmonary artery occlusion pressures
(D) systolic arterial and pulmonary artery occlusion pressures
(E) diastolic arterial and central venous pressures
Reveal Answer
BASIC
General
Each of the following contributes to hypotension following induction of anesthesia with propofol EXCEPT
(A) central vagal stimulation
(B) decreased central sympathetic tone
(C) direct myocardial depression
(D) resetting of arterial baroreceptors
(E) systemic vasodilation
Reveal Answer
Which of the following provides the earliest indication of myocardial ischemia during general anesthesia?
(A) Cardiac index
(B) Mixed venous oxygen saturation
(C) Pulmonary artery occlusion pressure
(D) Regional ventricular wall motion
(E) ST-segment depression on ECG
Reveal Answer
Which property of oxygen is detected by the fail-safe device on the anesthesia machine?
(A) Concentration
(B) Flow
(C) Pressure
(D) Partial pressure
(E) Reserve volume
Reveal Answer
BASIC
Equipment & Physics
Which of the following limits the use of nalbuphine for relief of postoperative pain?
(A) High incidence of nausea and vomiting
(B) High incidence of delayed respiratory depression
(C) Potential for inducing seizures with repeated doses
(D) Relatively low maximal analgesic effect
(E) Short duration of action
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Dantrolene
(A) antagonizes the effect of nondepolarizing muscle relaxants
(B) produces clinically detectable muscle weakness when administered intravenously prior to anesthesia
(C) is indicated for neuroleptic malignant syndrome
(D) may cause hepatic failure when used prophylactically before anesthesia
(E) has increased effectiveness when combined with calcium entry blockers
Reveal Answer
ADVANCED
Pharmacology & Pharmacokinetics
Which of the following is the most likely sequela of interscalene brachial plexus block?
(A) Cervical epidural block
(B) Hemidiaphragmatic paralysis
(C) Pneumothorax
(D) Seizure
(E) Vocal cord paralysis
Reveal Answer
ADVANCED
Regional & Pain
A 65-kg man is scheduled for wrist surgery with intravenous regional anesthesia with 0.5% lidocaine 50 ml. Which of the following statements is true?
(A) This anesthetic is contraindicated if the patient has sickle cell disease
(B) Mottling of the skin after injection dictates abandonment of the technique
(C) Tourniquet discomfort is an indication to inject more local anesthetic
(D) Bupivacaine 0.5% could be substituted to prolong anesthesia
(E) Epinephrine (1:400,000) should be added to prolong anesthesia
Reveal Answer
ADVANCED
Regional & Pain
A 13-year-old African American boy has severe abdominal pain after debridement of an open fracture of the lower extremity. His hemoglobin concentration is 10 g/dl and a peripheral blood smear shows elongated crescent-shaped erythrocytes. The most appropriate initial therapy is
(A) sodium bicarbonate administration
(B) dopamine infusion
(C) blood transfusion
(D) volume loading with crystalloid
(E) high-dose corticosteroid administration
Reveal Answer
Which of the following is the most likely cause of apnea occurring after a retrobulbar block?
(A) Epidural injection
(B) Increased intracranial pressure
(C) Oculopontine reflex
(D) Ophthalmic artery injection
(E) Subarachnoid injection
Reveal Answer
ADVANCED
Regional & Pain