10 Random Questions
Compared with morphine, a single epidural administration of fentanyl is associated with
(A) delayed onset of analgesia
(B) increased incidence of pruritus
(C) increased incidence of respiratory depression
(D) longer duration of action
(E) more restricted segmental spread
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
Regional & Pain
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
The effect of neomycin at the neuromuscular junction is
(A) decreased by depolarizing relaxants
(B) partially reversed by calcium
(C) potentiated by anticholinesterases
(D) prevented by pretreatment with magnesium
(E) primarily prejunctional
Reveal Answer
ADVANCED
Pharmacology & Pharmacokinetics
A computer program for hemodynamic calculations has the following input values: body surface area, arterial blood pressure, heart rate, pulmonary artery occlusion pressure, pulmonary artery pressure, and cardiac output. Each of the following values can be derived with this program EXCEPT
(A) cardiac index
(B) stroke volume index
(C) systemic vascular resistance
(D) pulmonary vascular resistance
(E) left ventricular stroke work index
Reveal Answer
BASIC
Respiratory & Critical Care
Which of the following decreases dead space in an anesthetic circle system?
(A) Larger surface area of the expiratory unidirectional valve
(B) Placing a septum in the Y-piece
(C) Shorter expiratory limb tubing
(D) Smaller carbon dioxide absorber
(E) Smaller reservoir bag
Reveal Answer
BASIC
Equipment & Physics
During laser excision of a vocal cord polyp, the tracheal tube ignites. Which of the following is the most appropriate next step?
(A) Continue ventilation with air
(B) Ensure patency of the endotracheal tube
(C) Extubate the trachea
(D) Flood the surgical field with saline solution
(E) Increase the concentration of nitrous oxide
Reveal Answer
ADVANCED
Equipment & Physics
General
Left ventricular end-diastolic volume is most likely to be underestimated by pulmonary artery occlusion pressure in patients with
(A) acute myocardial ischemia
(B) aortic insufficiency
(C) mitral stenosis
(D) primary pulmonary hypertension
(E) tricuspid stenosis
Reveal Answer
BASIC
Cardiac
A 26-year-old patient with multiple trauma is admitted to the intensive care unit postoperatively. The early development of polyuria, hypotension, low urine sodium excretion, high serum osmolality, and normal serum creatinine concentration is best explained by
(A) adrenal insufficiency
(B) fluoride-induced high-output renal failure
(C) inappropriate ADH secretion
(D) intraoperative fluid overload
(E) posterior pituitary insufficiency
Reveal Answer
ADVANCED
General
One day after a vaginal hysterectomy under epidural anesthesia, a patient has numbness and inability to dorsiflex the right foot. Her legs were placed in leg holders during the operation. The most likely cause is
(A) epidural hematoma
(B) common peroneal nerve injury
(C) sacral nerve root injury
(D) sacral plexus injury
(E) sciatic nerve injury
Reveal Answer
ADVANCED
Regional & Pain
Which of the following is a cardiorespiratory effect of epidural block to a T4 sensory level?
(A) Decreased expiratory reserve volume
(B) Decreased tidal volume
(C) Increased circulating catecholamine concentrations
(D) Increased heart rate
(E) Unchanged vital capacity
Reveal Answer
ADVANCED
Respiratory & Critical Care
Regional & Pain