10 Random Questions
An otherwise healthy 16-year-old girl is undergoing posterior spinal fusion for thoracolumbar scoliosis. During the procedure, the most likely cause of a marked decrease in the amplitude of the somatosensory evoked potentials after stimulation of the posterior tibial nerve is
- (A) administration of fentanyl 30 jag /kg for induction
- (B) administration of isoflurane 1.3 MAC for maintenance
- (C) administration of vecuronium 0.15 mg/kg
- (D) a decrease in body temperature from 37 to 35°C
- (E) a decrease in cerebrospinal fluid pressure
Optimal ventilation of a newborn with congenital diaphragmatic hernia should consist of
- (A) PaCO2 30 mmHg, low tidal volumes
- (B) PaCO2 30 mmHg, high tidal volumes
- (C) PaCO2 40 mmHg, low tidal volumes
- (D) PaCO2 40 mmHg, high tidal volumes
- (E) PaCO2 45 mmHg, low tidal volumes
Which of the lines shown in the graph illustrates the relationship of hematocrit and oxygen transport?
- (A) Line A
- (B) Line B
- (C) Line C
- (D) Line D
- (E) Line E
Which of the following parts of the infant's airway determines the appropriate diameter of a nasotracheal tube?
- (A) Nares
- (B) Glottis
- (C) Vocal cords
- (D) Cricoid cartilage
- (E) Third tracheal ring
Prilocaine is NOT recommended for obstetric regional anesthesia because it
- (A) causes fetal methemoglobinemia
- (B) has a very short duration of action
- (C) is not metabolized by the newborn
- (D) is the most toxic of the amide local anesthetics
- (E) produces a longer motor block than sensory block
You see a flash of fire from the endotracheal tube of a patient undergoing carbon dioxide laser excision of laryngeal polyps. The immediate response should be to
- (A) discontinue the fresh gas flow
- (B) increase the nitrous oxide concentration
- (C) spray water down the endoscope
- (D) insert wet pads into the pharynx
- (E) remove the endotracheal tube
Microatelectasis 48 hours after abdominal surgery is most consistently manifested by
- (A) decreased PaO2
- (B) ground glass infiltrate on a roentgenogram of the chest
- (C) scattered fine inspiratory rales
- (D) increased PaCO2
- (E) scattered areas of dullness to chest percussion
A 67-year-old man undergoes spinal anesthesia with hyperbaric tetracaine 10 mg for transurethral resection of the prostate. At the end of the 50-minute procedure, the level of anesthesia is T6 and blood pressure is 120/70 mmHg. Within two minutes after transfer to a stretcher, the patient has nausea and blood pressure decreases to 76/42 mmHg. Which of the following is the most likely cause of the acute hypotension?
- (A) Acute congestive heart failure
- (B) Decreased venous return
- (C) Dilutional hyponatremia
- (D) Progression of sympathetic block
- (E) Unrecognized bladder perforation
If administered epidurally in equipotent doses, which of the following opioids will produce analgesia over the greatest number of dermatomes?
- (A) Fentanyl
- (B) Hydromorphone
- (C) Meperidine
- (D) Morphine
- (E) Sufentanil
In the absence of coronary artery disease, isoflurane-induced vasodilation and tachycardia are beneficial hemodynamic goals for which of the following cardiac diseases?
- (A) Aortic regurgitation
- (B) Aortic stenosis
- (C) Asymmetric septal hypertrophy (IHSS)
- (D) Mitral stenosis
- (E) Pulmonary regurgitation