10 Random Questions
Which of the following decreases the risk for burns during electrocauterization?
(A) Conductive flooring
(B) Grounding of the patient to the operating table
(C) Increased resistance at the return electrode
(D) Isolation of the current output of the electrosurgical unit
(E) Placement of the return electrode at a distance from the surgical site
Reveal Answer
BASIC
Equipment & Physics
The mortality rate of patients given drug A is 12% (8 of 66) and the mortality rate of patients given drug B is 15% (10 of 66). Which of the following tests is most appropriate to compare these mortality rates?
(A) t-Test for paired data
(B) t-Test for unpaired data
(C) Wilcoxon rank test
(D) Chi-square test
(E) Analysis of covariance
Reveal Answer
BASIC
General
Which of the following findings best indicates complete resolution of spinal anesthesia?
(A) Ability to ambulate
(B) Ability to urinate
(C) Perianal pinprick sensation
(D) Pain at the surgical site
(E) Proprioception of the big toe
Reveal Answer
ADVANCED
Regional & Pain
A 60-kg 25-year-old woman is undergoing laparoscopy in the Trendelenburg position during general anesthesia. Five minutes after peritoneal inflation, the peak airway pressure required to deliver a tidal volume of 800 ml increases from 25 cmH2O to 60 cmH2O. SpO2 decreases from 100% to 80% and systolic blood pressure increases from 110 mmHg to 140 mmHg. Which of the following is the most likely cause?
(A) Acute tension pneumothorax
(B) Excessively steep Trendelenburg position
(C) Excessive ventilator tidal volume setting
(D) Kink in the endotracheal tube
(E) Massive carbon dioxide embolism
Reveal Answer
BASIC
Respiratory & Critical Care
Administration of succinylcholine 1 mg/kg to a pregnant woman rarely causes fetal neuromuscular blockade. Which characteristic of succinylcholine best explains this phenomenon?
(A) High protein binding
(B) Ionization
(C) Lack of passive placental diffusion
(D) Lipid solubility
(E) Metabolism in the fetal liver
Reveal Answer
ADVANCED
Pharmacology & Pharmacokinetics
OB
Which of the following procedures is most specific for diagnosing reflex sympathetic dystrophy in a patient with pain of the lower extremity?
(A) Caudal epidural local anesthetic block
(B) Differential spinal anesthesia
(C) Intravenous regional administration of bretylium
(D) Lumbar epidural administration of a corticosteroid
(E) Paramedian L1-L5 facet injections of lidocaine
Reveal Answer
ADVANCED
Regional & Pain
Block of each of the following nerves is required for inguinal herniorrhaphy EXCEPT the
(A) genitofemoral
(B) iliohypogastric
(C) ilioinguinal
(D) obturator
(E) twelfth thoracic
Reveal Answer
ADVANCED
Regional & Pain
Which of the following is the greatest disadvantage of pressure-cycled ventilation?
(A) Increased I:E ratio
(B) Increased mechanical dead space
(C) Increased risk for barotrauma
(D) Variable respiratory rates
(E) Variable tidal volumes
Reveal Answer
BASIC
Equipment & Physics
Respiratory & Critical Care
Maternal hyperventilation to a PaCO2 of 20 mmHg during labor can result in
(A) decreased fetal trapping of local anesthetics
(B) fetal metabolic acidosis
(C) fetal respiratory acidosis
(D) increased oxygen release at the placenta
(E) uterine vasodilation
Reveal Answer
ADVANCED
OB
During extracorporeal shock wave lithotripsy, the shock wave should be synchronized with
(A) the P wave of the ECG
(B) the R wave of the ECG
(C) the T wave of the ECG
(D) peak inspiration
(E) end-expiration
Reveal Answer
BASIC
Equipment & Physics