10 Random Questions
In the operating room
(A) conductive floors are necessary for electrical safety
(B) the ECG monitor may be used as a grounding source
(C) an improperly grounded electrocautery causes ventricular fibrillation
(D) an isolation transformer offers no protection against microelectrocution
(E) a line isolation monitor will interrupt power automatically if excessive leakage to ground is detected
Reveal Answer
BASIC
Equipment & Physics
A 22-year-old woman with preeclampsia has undergone emergency cesarean delivery during general anesthesia. At the completion of the surgery, attempts at reversal of vecuronium are unsuccessful. Each of the following could be a cause of this failure EXCEPT
(A) hypoalbuminemia
(B) hypothermia
(C) perioperative administration of gentamicin
(D) perioperative administration of magnesium sulfate
(E) respiratory acidosis
Reveal Answer
The action of dantrolene on skeletal muscle
(A) occurs within the neuromuscular junction
(B) alters electrical properties of the muscle membrane
(C) does not result in muscle relaxation
(D) decreases myoplasmic calcium concentration
(E) results from competitive inhibition of caffeine
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Which of the following correctly describes the anatomic location of the stellate ganglion?
(A) Anterior to the transverse process of C5
(B) Anterior to the transverse process of C7
(C) Posterior to the prevertebral fascia
(D) Posterior to the vertebral artery
(E) Lateral to the carotid artery
Reveal Answer
ADVANCED
Regional & Pain
Which of the following statements concerning autonomic hyperreflexia after spinal cord transection is true?
(A) It occurs within 24 hours after the injury
(B) It occurs with lesions below T10
(C) It is caused by a reflex increase in parasympathetic outflow
(D) It is characterized by paroxysmal hypotension and tachycardia
(E) It is prevented by blocking afferent visceral pathways
Reveal Answer
ADVANCED
General
Which of the following statements about thiopental is true?
(A) Rapid uptake into maternal tissues limits its transfer to the fetus
(B) Its short duration of action is due to its extensive binding to plasma proteins
(C) Accumulation in fat leads to acute tolerance
(D) Alkalinity of solution causes respiratory depression
(E) Uptake into brain is slowed by respiratory acidosis
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Block of the superficial cervical plexus is performed at which location?
(A) At the midposterior border of the sternocleidomastoid muscle
(B) In the interscalene groove
(C) Over the mastoid process
(D) Over the transverse process of C4
(E) Over Chassaignac's tubercle
Reveal Answer
ADVANCED
Regional & Pain
Which of the following best explains the decreased effect of hyperventilation on cerebral blood flow when PaCO2 decreases below 20 mmHg?
(A) Maximal constriction of cerebral vessels
(B) Decreased cerebral perfusion pressure
(C) Decreased cerebral metabolic rate for oxygen
(D) Increased cardiac output
(E) Increased cerebrospinal fluid pressure
Reveal Answer
BASIC
Neuro
An advantage of CPDA-1 over CPD for storage of packed red blood cells is
(A) greater enhancement of red cell survival
(B) lesser increase in plasma hemoglobin concentration
(C) lesser increase in PC02 of stored blood
(D) better maintenance of blood pH
(E) better maintenance of 2,3-diphosphoglycerate concentration
Reveal Answer
BASIC
Transfusions & Fluids
A 50-year-old woman has episodes of electric-shock-like pain of one minute in duration affecting the right side of the face. In between episodes of this pain, she is relatively pain free. Which of the following is the most appropriate management?
(A) Beta-adrenergic blockers
(B) Carbamazepine
(C) Infrared heat therapy
(D) Nonsteroidal anti-inflammatory drugs
(E) Stellate ganglion block
Reveal Answer