10 Random Questions
A 69-year-old man is confused and agitated one hour after preoperative intramuscular administration of scopolamine for awake fiberoptic laryngoscopy. SpO2 measured by pulse oximetry is 97%. Which of the following drugs is most appropriate for treatment of the change in mental status?
- (A) Fentanyl
- (B) Flumazenil
- (C) Midazolam
- (D) Neostigmine
- (E) Physostigmine
Which of the following findings is most likely in patients with acute transection of the spinal cord at the level of C6?
- (A) Autonomic hyperreflexia
- (B) Hyperkalemia with administration of succinylcholine
- (C) Hypotension
- (D) Increased pulmonary blood flow
- (E) Tachycardia
A mechanically ventilated newborn infant is undergoing gastroschisis repair during halothane anesthesia. Based on the right radial artery catheter tracing shown, which of the following is the most appropriate conclusion?
- (A) The abdomen has not yet been incised
- (B) The anesthetic should be changed from halothane to isoflurane
- (C) The ductus arteriosus is still open
- (D) The infant is hypovolemic
- (E) The tidal volume is inadequate
Which of the following is a characteristic of VVI pacemakers?
- (A) They are inhibited by the R wave
- (B) They are triggered by the P wave
- (C) They are more likely to precipitate ventricular fibrillation than fixed-rate pacemakers
- (D) They are unaffected by unipolar electrocautery
- (E) They sense both atrial and ventricular depolarization
A patient is anesthetized using an inhaled anesthetic with a blood/gas partition coefficient of 13.0. Recovery time depends primarily on
- (A) oil/gas solubility of the drug
- (B) cardiac output
- (C) tidal volume
- (D) duration of administration
- (E) MAC of the drug
The following breath sounds are heard after placement of a left-sided double-lumen endobronchial tube. The most likely cause of these findings is
- (A) presence of both lumens in the right mainstem bronchus
- (B) presence of both lumens in the left mainstem bronchus
- (C) presence of both lumens in the trachea
- (D) herniation of the bronchial cuff at the bifurcation of the trachea
- (E) presence of the bronchial lumen in the right mainstem bronchus
Syringe A contains 100 ml of normal blood with a PO2 of 2 mmHg, and syringe B contains 100 ml of normal blood with a PO2 of 98 mmHg. The contents of the two syringes are mixed anaerobicaily to equilibrium. The PO2 of the resultant mixture Is
- (A) 27 mmHg
- (B) 50 mmHg
- (C) 63 mmHg
- (D) 96 mmHg
- (E) 100 mmHg
Which of the following statements concerning functional residual capacity is true?
- (A) It decreases linearly during a three-hour anesthetic
- (B) It decreases in pregnancy primarily because of a decrease in the expiratory reserve volume
- (C) It increases in patients with a history of heavy smoking
- (D) It increases with pulmonary contusions
- (E) It is smaller (ml/kg) in children than in adults
Which of the following statements concerning the use of epidural opioids during labor is true?
- (A) Fentanyl decreases the concentration of epidural bupivacaine required for satisfactory analgesia
- (B) Fentanyl is an effective analgesic for the second stage of labor
- (C) Sufentanil is an unsatisfactory analgesic for labor
- (D) The addition of epinephrine to morphine prolongs the duration of analgesia
- (E) The duration of analgesia with fentanyl is six to ten hours
A 2500-g, 12-hour-old infant is tracheally intubated and mechanically ventilated at a rate of 20/min with an FiO2 of 0.4 and peak inspiratory pressure of 25 cmH2O. At birth, amniotic fluid was meconium stained and Apgar scores were 2 and 7. The most recent arterial blood gas levels are PaO2, 50 mmHg, PaCO2, 55 mmHg, and pH 7.20. The most appropriate management is to
- (A) administer sodium bicarbonate
- (B) begin intravenous infusion of prostaglandin E,
- (C) increase FiO2
- (D) increase ventilation
- (E) perform bronchial lavage