Anesthesia Hub -

10 Random Questions

Fetal distress is noted after administration of an epidural local anesthetic during labor. Fetal scalp pH is 7.0. Compared with a fetus with a scalp pH of 7.3, in this fetus the local anesthetic is present in

(A) a higher concentration, with a larger fraction in the ionized form
(B) a higher concentration, with a larger fraction in the unionized form
(C) the same concentration, with a larger fraction in the ionized form
(D) the same concentration, with a larger fraction in the unionized form
(E) a lower concentration, with a larger fraction in the ionized form

ADVANCED OB

Which of the following is the most likely sequela of interscalene brachial plexus block?

(A) Cervical epidural block
(B) Hemidiaphragmatic paralysis
(C) Pneumothorax
(D) Seizure
(E) Vocal cord paralysis

ADVANCED Regional & Pain

Neuromuscular blockade of the diaphragm is best ensured by monitoring which of the following peripheral muscles?

(A) Adductor pollicis muscle
(B) First dorsal interosseous muscle
(C) Flexor hallucis muscle
(D) Muscles of the hypothenar eminence
(E) Orbicularis oculi muscle

Which property of oxygen is detected by the fail-safe device on the anesthesia machine?

(A) Concentration
(B) Flow
(C) Pressure
(D) Partial pressure
(E) Reserve volume

BASIC Equipment & Physics

Which of the following pre-existing conditions predisposes to new-onset third-degree heart block during pulmonary artery catheterization?

(A) First-degree heart block
(B) Left bundle branch block
(C) Sick sinus syndrome
(D) Sinus bradycardia
(E) Wenckebach second-degree heart block

ADVANCED General Cardiac

With respect to mechanical ventilation, which of the following statements concerning the portion of tidal volume known as compression volume is true?

(A) It is calculated by dividing the volume of gas delivered to the patient by the peak pressure
(B) It does not contribute to the volume of gas entering the patient
(C) It is not included in the volume measured by a spirometer on the inspiratory limb
(D) It decreases with the addition of a humidifier to the breathing circuit
(E) It decreases with the addition of one-way valves at the Y connector of the breathing circuit

BASIC Equipment & Physics

A 37-year-old woman with pregnancy-induced hypertension develops oliguria two hours after cesarean delivery during epidural .anesthesia. Despite infusion of 2000 mL of crystalloid solution, urine output remains 10 mL/hr. Which of the following laboratory findings is most suggestive of acute tubular necrosis?

(A) Blood urea nitrogen level of 30 mg/dL
(B) Serum creatinine level of 1.2 mg/dL
(C) Urinary/plasma osmolality of 1:1
(D) Urinary sodium level of 10 mEq/L
(E) Urinary specific gravity of 1.024

Which of the following neurophysiologic monitoring modalities is LEAST affected by administration of volatile anesthetic agents?

(A) Brain stem auditory evoked potentials
(B) Electroencephalogram
(C) Motor evoked potentials
(D) Somatosensory evoked potentials
(E) Visual evoked potentials

BASIC Equipment & Physics

Cessation of smoking on the day prior to an operation is associated with a perioperative

(A) decrease in carbon monoxide in blood
(B) improvement in ciliary beating in the airways
(C) decrease in sputum volume
(D) decrease in the need for postoperative ventilatory support
(E) decrease in the risk of deep vein thrombosis

BASIC Respiratory & Critical Care

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

ADVANCED OB Regional & Pain