10 Random Questions
Compared with isoflurane, desflurane
- (A) causes higher plasma norepinephrine levels
- (B) has greater biodegradability
- (C) has a higher blood/gas partition coefficient
- (D) has a lower MAC value
- (E) has a lower vapor pressure
Compared with blood anticoagulated with CPD, blood stored in CPDA-1 has
- (A) better preservation of 2,3-DPG concentration
- (B) better preservation of ATP concentration in erythrocytes
- (C) shorter erythrocyte survival
- (D) shorter shelf life
- (E) decreased platelet aggregation
A 24-year-old woman with abruptio placentae at 38 weeks' gestation has bleeding at the site of the intravenous catheter. Which of the following is the most likely cause?
- (A) Diffuse vasculitis
- (B) Disseminated intravascular coagulation
- (C) Isolated factor VIII deficiency
- (D) Primary fibrinolysis
- (E) Vitamin K deficiency
Characteristics of postdural puncture headache include
- (A) incidence unrelated to the timing of ambulation
- (B) increased severity with addition of vasoconstrictors to the anesthetic
- (C) less frequent occurrence if the needle bevel is perpendicular to the direction of dural fibers
- (D) more frequent occurrence in men
- (E) prevention by prophylactic epidural blood patch
Meperidine has a more rapid onset of action than morphine following intravenous injection because of its
- (A) lesser ionization
- (B) greater lipid solubility
- (C) lesser protein binding
- (D) smaller volume of distribution
- (E) slower rate of hepatic clearance
Which of the following statements is true concerning administration of 70% nitrous oxide to a patient with an unrecognized pneumothorax?
- (A) Expansion of the pneumothorax by nitrous oxide occurs at a greater rate than expansion of bowel gas
- (B) Expansion of the pneumothorax by nitrous oxide occurs at a linear rate
- (C) The maximum expansion of a closed space occurs within 15 minutes
- (D) The maximum concentration of nitrous oxide achievable within the pneumothorax is 35%
- (E) The maximum increase in a closed gas-containing space is 100%
In a patient with sickle cell anemia, which of the following is LEAST likely to trigger sickling?
- (A) Hypothermia
- (B) Increased systemic vascular resistance
- (C) Low central venous pressure
- (D) Low mixed venous P02
- (E) Metabolic alkalosis
Which of the following pulmonary components is altered the most in a morbidly obese patient?
- (A) Total lung volume
- (B) Tidal volume
- (C) Inspiratory reserve volume
- (D) Expiratory reserve volume
- (E) Ratio of dead space to tidal volume
The figure describes the uptake of nitrous oxide 75% by individual tissue groups (VRG = vessel-rich group, MG = muscle group, FG = fat group) and their sum (total uptake, TU). Which set of labels accurately describes the curves?
- (A) 1- MG, 2- FG, 3- VRG, 4- TU
- (B) 1- VRG, 2- MG, 3- FG, 4- TU
- (C) 1- FG, 2- MG, 3- TU, 4- VRG
- (D) 1- TU, 2- FG, 3- MG, 4- VRG
- (E) 1- TU, 2- VRG, 3- MG, 4- FG
In a 5-kg boy with Treacher Collins syndrome who is to undergo cleft palate repair, endotracheal intubation is best accomplished with
- (A) awake nasal intubation after topical anesthesia
- (B) halothane anesthesia with spontaneous ventilation
- (C) light isoflurane anesthesia and a muscle relaxant
- (D) thiopental and succinylcholine sequence intravenously
- (E) nasal intubation after administration of ketamine intramuscularly