10 Random Questions
Which of the following is a characteristic of phase II neuromuscular block?
- (A) It is diagnosed by the intravenous administration of calcium
- (B) It is potentiated by edrophonium
- (C) It produces nondepolarizing train-of-four characteristics
- (D) It requires evaluation for pseudocholinesterase deficiency
- (E) It requires less succinylcholine than a phase I block
Which of the following conditions decreases right-to-left shunt through a patent ductus arteriosus in a neonate?
- (A) Arterial hypotension
- (B) Arterial hypoxemia
- (C) Metabolic acidemia
- (D) Positive end-expiratory pressure
- (E) Respiratory alkalemia
Maternal hyperventilation will result in
- (A) increased umbilical blood flow
- (B) decreased affinity of maternal hemoglobin for oxygen
- (C) decreased maternal and fetal cardiac output
- (D) increased placental transfer of oxygen
- (E) increased fetal cerebral blood flow
Which of the following procedures is most specific for diagnosing reflex sympathetic dystrophy in a patient with pain of the lower extremity?
- (A) Caudal epidural local anesthetic block
- (B) Differential spinal anesthesia
- (C) Intravenous regional administration of bretylium
- (D) Lumbar epidural administration of a corticosteroid
- (E) Paramedian L1-L5 facet injections of lidocaine
Alveolar and inspired anesthetic concentrations equilibrate more rapidly with nitrous oxide than with desflurane because nitrous oxide
- (A) has a higher vapor pressure
- (B) has a lower blood gas solubility
- (C) has a lower MAC
- (D) is delivered at a higher inspired concentration
- (E) produces a second gas effect
Which of the following is most effective in decontaminating an anesthesia machine that was splattered with HIV-contaminated blood?
- (A) Bleach
- (B) Deionized water
- (C) Ethylene oxide
- (D) Hydrogen peroxide
- (E) Isopropyl alcohol
To detect the delivery of hypoxic gas mixture, the optimal location for an oxygen analyzer in this circle is
- (A) 1
- (B) 2
- (C) 3
- (D) 4
- (E) 5
A 31-year-old man received an uneventful epidural anesthetic for arthroscopy of the knee and meniscectomy. Twenty-four hours later he still has painless flaccid paralysis in both legs. This clinical presentation is most consistent with
- (A) adhesive arachnoiditis
- (B) anterior spinal artery thrombosis
- (C) epidural abscess
- (D) epidural hematoma
- (E) transverse myelitis
Postoperatively, a patient is being mechanically ventilated by a constant-flow, pressure-cycled ventilator with the following initial settings: inspiratory/expiratory (I/E) ratio of 1:2, peak inspiratory pressure (PIP) of 25 cmH2O, and rate of 10/min. One hour later, the I/E ratio is 1:4. Which of the following would ensure that the minute ventilation is the same as that initially set?
- (A) Inflate the endotracheal tube cuff to prevent leakage
- (B) Double the respiratory rate
- (C) Decrease the expiratory pause until the I/E ratio is 1.0
- (D) Increase the PIP until the I/E ratio is 1:2
- (E) Increase the PIP to 50 cmH20
Compared with epidural morphine, intrathecal morphine produces
- (A) better relief of visceral pain
- (B) greater loss of analgesia after administration of naloxone
- (C) less pruritus
- (D) less urinary retention
- (E) more respiratory depression