10 Random Questions
Pulse oximetry accurately reflects SaO2 in which of the following situations?
- (A) Administration of indocyanine green
- (B) Administration of methylene blue
- (C) Carboxyhemoglobinemia
- (D) 40% fetal hemoglobin concentration
- (E) Methemoglobinemia
During postoperative indirect laryngoscopy, the vocal cords appear symmetric during quiet breathing and approximate to the left of midline during phonation. The most likely cause is
- (A) pure abductor paralysis of the left cord
- (B) pure abductor paralysis of the right cord
- (C) abductor and adductor paralysis of the left cord
- (D) abductor and adductor paralysis of the right cord
- (E) adductor paralysis of both cords
Which of the following is an effect of ketorolac administered after vaginal hysterectomy?
- (A) Euphoria
- (B) Prolonged prothrombin time
- (C) Respiratory depression
- (D) Suppression of inflammation
- (E) Thrombocytopenia
The Bain circuit
- (A) provides nearly identical delivered and inspired anesthetic concentrations
- (B) has the fresh gas flow inlet near the reservoir bag
- (C) is a nonrebreathing circuit at any fresh gas flow rate
- (D) is most efficient during spontaneous ventilation
- (E) has a time constant greater than 1 minute for change in inspired anesthetic concentrations
A 33-year-old woman is scheduled for emergency appendectomy under general anesthesia. She has hypertrophic cardiomyopathy and has had two episodes of syncope in the past year. Which of the following statements concerning anesthetic management is true?
- (A) Spinal anesthesia is preferred to general anesthesia
- (B) Deep levels of isoflurane anesthesia are appropriate
- (C) Fluid administration should be restricted
- (D) Phenylephrine is preferred to ephedrine to treat hypotension
- (E) Positive end-expiratory pressure will decrease left ventricular outflow obstruction
Hyperkalemia in response to the administration of an intubating dose of succinylcholine is associated with each of the following disorders EXCEPT
- (A) poliomyelitis
- (B) multiple sclerosis
- (C) hemiplegia
- (D) acute cervical cord transection
- (E) familial periodic paralysis
The primary purpose of denitrogenation prior to anesthetic induction is to
- (A) blunt hypoxic pulmonary vasoconstriction
- (B) improve ventilation and perfusion matching
- (C) increase contribution of second gas effect to rate of induction
- (D) increase oxygen reserve in the functional residual capacity
- (E) maximize arterial oxygen content
The most likely explanation for the intraoperative capnographic tracing shown is
- (A) cardiac oscillation
- (B) exhaustion of soda lime
- (C) kinking of the endotracheal tube
- (D) partial recovery from vecuronium
- (E) presence of water droplets in the analyzer
Each of the following values is associated with acute tubular necrosis EXCEPT
- (A) urine osmolality of 200 mOsm/kg
- (B) urine sodium concentration of 15 mEq/L
- (C) urine specific gravity of 1.009
- (D) urine/serum osmolarity ratio of 1.2
- (E) fractional excretion of sodium of 4%
Which of the following best explains the decreased effect of hyperventilation on cerebral blood flow when PaCO2 decreases below 20 mmHg?
- (A) Maximal constriction of cerebral vessels
- (B) Decreased cerebral perfusion pressure
- (C) Decreased cerebral metabolic rate for oxygen
- (D) Increased cardiac output
- (E) Increased cerebrospinal fluid pressure