Anesthesia Hub -

10 Random Questions

Which of the following statements concerning awareness (recall) during opioid anesthesia is true?

(A) It is usually not associated with pain
(B) It correlates well with intact auditory evoked responses
(C) It is prevented if the dose of opioid blocks the hemodynamic response to stimuli
(D) It is prevented if the dose of opioid is adequate to prevent movement without muscle relaxants
(E) It is predicted by a specific EEG pattern

BASIC General

Alveolar partial pressure of an inhaled anesthetic rises more rapidly in a parturient at term than in a nonpregnant woman because

(A) functional residual capacity is decreased
(B) PaC02 is decreased
(C) uptake of inhaled agents by tissues is decreased
(D) cardiac output is increased
(E) physiologic dead space is increased

During apneic oxygenation (FiO2 1.0) through a rigid bronchoscope

(A) duration of the procedure is limited by the increase in PaCO2
(B) functional residual capacity decreases 5%/min
(C) PaO2 remains unchanged for the first 5 minutes
(D) PaCO2 increases 2 to 6 mmHg/min for 15 minutes and then reaches a plateau
(E) PaO2 and PaCO2 equilibrate with mixed venous gases at the same rate

BASIC Respiratory & Critical Care

Desflurane at a stable alveolar concentration of 7%

(A) causes bradycardia
(B) decreases cerebrovascular resistance
(C) degrades in soda lime
(D) increases systemic vascular resistance
(E) stimulates the respiratory centers

BASIC Equipment & Physics Pharmacology & Pharmacokinetics

Which of the following increases blood flow to the lower lobe of the right lung?

(A) Collapsing the right lung during anesthesia
(B) The expiratory phase of spontaneous ventilation
(C) The inspiratory phase of mechanical ventilation
(D) Moving from the supine to the upright position
(E) Moving from the supine to the left lateral decubitus position

Which of the following statements concerning successful blockade of the femoral nerve is true?

(A) It requires that a paresthesia be elicited prior to injection
(B) It provides motor blockade below the knee
(C) It is accomplished with an injection medial to the femoral artery
(D) It permits surgery for entrapment of the lateral femoral cutaneous nerve
(E) It provides anesthesia to the anterior thigh

A 64-year-old patient with chronic obstructive pulmonary disease sustained fractures of ribs 4 through 8 on the left one hour ago. Examination shows agitation, heart rate of 120 bpm, respiratory rate of 30/min, and blood pressure of 180/100 mmHg. PaO2 is 70 mmHg and PaCO2 is 35 mmHg on room air. Radiographs of the chest show no abnormalities. Which of the following is the most appropriate immediate management?

(A) Continuous epidural analgesia using local anesthetics
(B) Mechanical ventilation
(C) Infusion of midazolam
(D) Patient-controlled analgesia with morphine sulfate
(E) Surgical stabilization of rib fractures

ADVANCED General Regional & Pain

Mismatching of ventilation to perfusion in the lung is greatest in which of the following situations?

(A) Awake patient, spontaneous ventilation, lateral decubitus position
(B) Anesthetized patient, controlled ventilation, supine position
(C) Anesthetized patient, controlled ventilation, lateral decubitus position
(D) Anesthetized patient, controlled ventilation, sitting position
(E) Anesthetized patient, spontaneous ventilation, prone position

BASIC Respiratory & Critical Care

When methylmethacrylate is inserted into the femur, each of the following may occur EXCEPT

(A) monomer metabolic breakdown
(B) vasodilation
(C) hypercarbia
(D) hypoxia
(E) increased intramedullary pressure

ADVANCED General

A 70-kg, 77-year-old man Is undergoing left nephrectomy with nitrous oxide, oxygen, fentanyl, and midazolam anesthesia. He has a 90 pack-year history of cigarette smoking and has chronic obstructive pulmonary disease. One hour after incision, expiratory wheezing occurs and peak Inspiratory pressure increases from 35 to 65 cmH20; end-tidal PCO2 is unchanged, but SpO2 decreases from 97% to 88%. The most likely cause is

(A) endobronchial intubation
(B) overinflation of the endotracheal tube cuff
(C) pneumothorax
(D) pulmonary edema
(E) pulmonary embolism

ADVANCED Respiratory & Critical Care General