10 Random Questions
Which of the following statements concerning fetal hemoglobin is true?
(A) It makes up less than 50% of the total hemoglobin in the neonate
(B) It has less affinity for oxygen than adult hemoglobin
(C) It binds with greater affinity to 2,3-DPG than adult hemoglobin
(D) It shifts the oxyhemoglobin dissociation curve to the left
(E) It has a P50 of 27 mmHg
Reveal Answer
ADVANCED
Pediatric
During general anesthesia with spontaneous ventilation, a patient has a VD/VT of 0.5. Which of the following is most likely to decrease the ratio?
(A) Acute bronchospasm
(B) Continuous positive airway pressure
(C) Decreased tidal volume
(D) Increased cardiac output
(E) Pulmonary embolism
Reveal Answer
BASIC
Respiratory & Critical Care
The most important cause of hypotension that occurs normally at initiation of cardiopulmonary bypass is
(A) hemodilution
(B) acidosis
(C) decreased flow rate
(D) vasodilation
(E) hypothermia
Reveal Answer
The most important anesthetic consideration in Pierre Robin syndrome is
(A) anterior tilt of the larynx
(B) hyperplasia of the internal surface of the maxilla
(C) mandibular hypoplasia
(D) hypertrophy of the epiglottis
(E) tracheomalacia
Reveal Answer
ADVANCED
Pediatric
Which of the following statements concerning the superior laryngeal nerve is true?
(A) It provides sensory innervation to the subglottic surface of the vocal cord
(B) It provides sensory innervation to the inferior surface of the epiglottis
(C) It is a branch of the glossopharyngeal nerve
(D) It is blocked by injection of anesthetic near the lateral portion of the cricothyroid membrane
(E) It is the most commonly injured nerve during thyroid surgery
Reveal Answer
BASIC
Regional & Pain
Which of the following best describes cardiomyopathy following therapy with doxorubicin (Adriamycin)?
(A) The initial presentation is concentric hypertrophy
(B) The diagnosis is confirmed by a shortened QT interval
(C) It is exacerbated by hyperoxia
(D) It is resistant to inotropic agents
(E) It: may persist for years after therapy is discontinued
Reveal Answer
ADVANCED
Cardiac
A direct 5-joule shock is unsuccessful in converting ventricular fibrillation occurring after discontinuation of cardiopulmonary bypass. The most appropriate next step is to
(A) administer calcium chloride
(B) administer bretylium
(C) administer regular insulin
(D) administer sodium bicarbonate
(E) increase shock energy
Reveal Answer
A patient is bleeding excessively after routine transurethral resection of the prostate. Re-exploration discloses diffuse oozing. The most appropriate management is administration of
(A) platelets
(B) fresh frozen plasma
(C) desmopressin
(D) epsilon-aminocaproic acid
(E) cryoprecipitate
Reveal Answer
ADVANCED
General
A multigravid woman is receiving oxytocin by infusion for augmentation of labor. Fetal heart rate is 190 bpm with beat-to-beat variability of 6 to 8 bpm. The most appropriate immediate action would be to
(A) continue observation
(B) sample fetal scalp blood
(C) discontinue oxytocics
(D) administer a beta-adrenergic blocker to the mother
(E) deliver the fetus
Reveal Answer
ADVANCED
OB
The low fetal/maternal plasma ratio of bupivacaine compared with lidocaine is due to
(A) fetal tissue binding
(B) fetal plasma protein binding
(C) maternal plasma protein binding
(D) ionization in maternal blood
(E) ionization in fetal blood
Reveal Answer
ADVANCED
OB
Pharmacology & Pharmacokinetics