10 Random Questions
Which of the following antihypertensive drugs is most likely to cause bradycardia?
(A) Captopril
(B) Clonidine
(C) Hydralazine
(D) Nifedipine
(E) Phenoxybenzamine
Reveal Answer
Which of the following statements concerning hyperkalemia after succinylcholine administration to a patient with a spinal cord injury is true?
(A) It is unlikely to occur if the lesion is located below T6
(B) It is unlikely to occur within 24 hours of the injury
(C) It is unlikely to occur more than 60 days after the initial injury
(D) It is prevented by pretreatment with small doses of a nondepolarizing agent
(E) It is decreased in magnitude by pretreatment with calcium chloride
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Which of the following factors is the major cause of hypotension following release of the infrarenal aortic cross-clamp during aortic reconstruction?
(A) Abnormal myocardial function
(B) Decreased systemic vascular resistance
(C) Down-regulation of adrenergic receptors
(D) Increased PaCO2
(E) Suppression of the renin-angiotensin system
Reveal Answer
ADVANCED
General
An 8-kg, 5-month-old infant undergoes craniotomy for an arteriovenous malformation. During the procedure, severe hemorrhaging occurs and packed red blood cells 3 units are transfused rapidly. During infusion of the third unit, hypotension, nodal bigeminy, and prolongation of the QT interval are noted. The most appropriate management includes administration of
(A) bicarbonate
(B) calcium
(C) ephedrine
(D) lidocaine
(E) potassium
Reveal Answer
ADVANCED
Transfusions & Fluids
Pediatric
A 50-year-old man with alcoholism and jaundice is scheduled to undergo umbilical herniorrhaphy. An increase in which of the following best indicates impaired synthetic hepatic function?
(A) Prothrombin time
(B) Serum alanine aminotransferase concentration
(C) Serum albumin/globulin ratio
(D) Serum alkaline phosphatase concentration
(E) Serum bilirubin concentration
Reveal Answer
BASIC
General
The adult oxyhemoglobin dissociation curve will resemble that of the fetus in the presence of
(A) increased 2,3-diphosphoglycerate concentration
(B) chronic anemia
(C) hyperthermia
(D) metabolic alkalemia
(E) hyperkalemia
Reveal Answer
ADVANCED
Respiratory & Critical Care
Pediatric
The jet ventilation technique using an injector during laryngobronchoscopy relies on
(A) air entrainment
(B) relative density of inhaled gases
(C) presence of an endotracheal tube
(D) presence of spontaneous ventilation
(E) use of helium-oxygen mixtures
Reveal Answer
ADVANCED
Equipment & Physics
Diplopia following lumbar puncture with a 25-gauge, 3 1/2-inch needle is the result of
(A) stretching the abducens nerve
(B) pressure on the optic nerve
(C) distortion of the oculomotor nucleus from collapse of the wall of the third ventricle
(D) the severity of the accompanying headache
(E) compensatory cerebral swelling
Reveal Answer
ADVANCED
Regional & Pain
Which of the following statements concerning interscalene brachial plexus block is true?
(A) The three trunks of the plexus are in the same fascial plane as the internal jugular vein
(B) Distal spread of anesthetic past the humeral head is accelerated by adduction of the arm
(C) Anesthetic solution can spread up the fascial sheaths to involve the stellate ganglion
(D) Ipsilateral diaphragmatic paralysis results from epidural spread
(E) Rich vascularity in the sheaths promotes rapid vascular uptake of anesthetic
Reveal Answer
ADVANCED
Regional & Pain
While checking an anesthesia machine, opening the oxygen flow-control valve yields no oxygen flow, although the wall-mounted oxygen pipeline supply gauge reads 50 psig. Opening the backup oxygen cylinder results in normal oxygen flow. The most likely cause is
(A) failure of the oxygen pipeline supply
(B) failure of the second-stage oxygen pressure regulator
(C) a malfunctioning check valve in the oxygen pipeline supply inlet
(D) a malfunctioning fail-safe valve
(E) a malfunctioning oxygen flow-control valve
Reveal Answer
BASIC
Equipment & Physics