10 Random Questions
Three hours after total thyroidectomy, a 33-year-old man develops inspiratory stridor. The most likely cause is
(A) hematoma formation
(B) tracheomalacia
(C) tetany
(D) recurrent laryngeal nerve injury
(E) superior laryngeal nerve injury
Reveal Answer
Alveolar partial pressure of an inhaled anesthetic rises more rapidly in a parturient at term than in a nonpregnant woman because
(A) functional residual capacity is decreased
(B) PaC02 is decreased
(C) uptake of inhaled agents by tissues is decreased
(D) cardiac output is increased
(E) physiologic dead space is increased
Reveal Answer
If minute ventilation remains constant, a decrease in end-expiratory carbon dioxide concentration will occur with
(A) a decrease in physiologic dead space
(B) a decrease in cardiac output
(C) a decrease in physiologic shunt fraction
(D) the development of metabolic alkalosis
(E) an increase in body temperature
Reveal Answer
BASIC
Respiratory & Critical Care
Compared with the adult airway, the neonatal airway has which of the following characteristics?
(A) More cephalad larynx
(B) Narrowest diameter at the vocal cords
(C) Relatively smaller epiglottis
(D) Smaller tongue relative to the size of the oral cavity
(E) Vocal cords perpendicular to the trachea
Reveal Answer
ADVANCED
Pediatric
In a patient who is breathing spontaneously, the work of breathing increases with each of the following EXCEPT
(A) decreased compliance
(B) decreased vital capacity
(C) increased carbon dioxide production
(D) increased respiratory rate
(E) increased dead space
Reveal Answer
Nitroprusside therapy for hypertension should be discontinued in the presence of
(A) acute myocardial infarction
(B) increasing metabolic acidosis
(C) methemoglobinemia
(D) mitral regurgitation
(E) renal failure
Reveal Answer
ADVANCED
General
Cardiac
A 2.3-kg 1-day-old term infant requires repair of a gastroschisis. Which of the following combinations is most appropriate for intraoperative fluid management?
(A) Dextrose 5% in water for maintenance and lactated Ringer's solution for replacement of third space losses
(B) Dextrose 10% in water for maintenance and lactated Ringer's solution for replacement of third space losses
(C) Lactated Ringer's solution for maintenance and replacement of third space losses
(D) Lactated Ringer's solution for maintenance and albumin 5% for replacement of third space losses
(E) Normal saline solution for maintenance and lactated Ringer's solution for replacement of third space losses
Reveal Answer
ADVANCED
Pediatric
Inhalation induction of anesthesia is more rapid in a 6-month-old infant than in an adult because infants have
(A) greater ratio of alveolar ventilation to functional residual capacity
(B) greater ratio of blood volume to body weight
(C) greater solubility of anesthetic in blood
(D) lower anesthetic requirement
(E) lower distribution of cardiac output to vessel-rich organs
Reveal Answer
ADVANCED
Pharmacology & Pharmacokinetics
Pediatric
During axillary block of the brachial plexus, which nerve is most likely to be encountered if the needle is inserted through the posterior wall of the artery?
(A) Intercostobrachial
(B) Median
(C) Musculocutaneous
(D) Radial
(E) Ulnar
Reveal Answer
ADVANCED
Regional & Pain
Perception of pain from cutaneous sources involves each of the following EXCEPT
(A) frontal lobe gyri
(B) lateral spinothalamic tracts
(C) periaqueductal gray matter
(D) spinal dorsal horn lamina V
(E) unmyelinated C fibers
Reveal Answer
BASIC
Regional & Pain