10 Random Questions
A 52-year-old woman undergoes facial surgery during general endotracheal anesthesia. The ventilator is set to deliver a tidal volume of 600 ml and a respiratory rate of 10/min at an FiO2 of 1.0. SpO2 is 100%, peak inspiratory pressure is 18 cmH2O, and PetCO2 is 40 mmHg. The surgeon flexes the patient's head so the chin touches the chest. Which of the following findings indicates that endobronchial intubation has NOT occurred?
- (A) Fluctuating capnographic waveform
- (B) Greater expiratory volume than inspiratory volume
- (C) Unchanged SpO2
- (D) Unchanged PetCO2
- (E) Unchanged peak inspiratory pressure
Which of the following time concentration curves would be expected in arterial blood following intravenous injection of indocyanine green dye in a 3-year-old child with a small ventricular septal defect?
Which of the following is a characteristic of the Bain breathing circuit?
- (A) Condensation of moisture in inspired gases is facilitated by the circuit design
- (B) Fresh gas flows coaxially around the exhalation limb
- (C) Fresh gas flows need not exceed minute ventilation
- (D) The circuit eliminates the possibility of rebreathing
- (E) The circuit is functionally similar to the Jackson-Rees system
A patient with lumbar disk disease requires lumbar epidural injection of a corticosteroid for control of low back pain. Which of the following statements concerning this treatment is true?
- (A) Maximum effect occurs one hour after injection
- (B) Maximum effect occurs when drug concentration peaks in cerebrospinal fluid
- (C) Maximum effect occurs during the acute phase of the disease
- (D) The beneficial effect results primarily from sympathetic neurolysis
- (E) It is contraindicated if the patient has had prior surgical procedures on the lumbar disks
A 55-year-old patient with hypertrophic cardiomyopathy (IHSS) is undergoing bladder suspension with enflurane 1%, nitrous oxide 50%, and oxygen 50%. Junctional tachycardia and hypotension develop suddenly immediately after skin incision. The most appropriate management is to
- (A) decrease enflurane concentration
- (B) administer an intravenous fluid bolus
- (C) administer intravenous esmolol
- (D) administer intravenous phenylephrine
- (E) begin nitroglycerin infusion
Immediately after sustaining severe head injury, a 20-year-old man has a blood pressure of 150/90 mmHg and an intracranial pressure of 35 mmHg. After one hour of thiopental infusion, blood pressure is 105/60 mmHg, intracranial pres sure is 20 mmHg, central venous pressure is 5 mmHg, and temperature is 36°C. The EEG shows slow-wave activity. The most appropriate next step is administration of
- (A) additional thiopental
- (B) a corticosteroid
- (C) furosemide
- (D) nimodipine
- (E) phenylephrine
An 18-year-old woman has knee pain during arthroscopy performed with femoral and sciatic nerve blocks for repair of a torn medial meniscus. The most appropriate management is addition of which of the following nerve blocks?
- (A) Deep peroneal
- (B) Obturator
- (C) Popliteal
- (D) Saphenous
- (E) Superficial peroneal
Acute epiglottitis usually
- (A) requires a lateral radiograph of the neck for diagnosis
- (B) occurs in children 2 to 4 years of age
- (C) is treated effectively with racemic epinephrine
- (D) has a viral etiology
- (E) requires immediate awake intubation by direct laryngoscopy in the emergency department
Numbness and tingling on the lateral aspect of the thigh 24 hours after uneventful vaginal delivery is most likely a complication of
- (A) forceps delivery
- (B) lithotomy position
- (C) pudendal nerve block
- (D) lumbar epidural anesthesia
- (E) spinal anesthesia
Which of the following is the primary physiologic response in a neonate exposed to a hypothermic environment?
- (A) Hyperventilation
- (B) Increased 2,3-DPG concentration in erythrocytes
- (C) Metabolism of brown fat
- (D) Shivering
- (E) Vasoconstriction