Anesthesia Hub -

10 Random Questions

During uncomplicated mask induction with halothane and 50% nitrous oxide in oxygen in a 6-month-old infant with a large ventricular septal defect and valvular pulmonic stenosis, SpO2 decreases from 85% (room air) to 60%; heart rate is 100 bpm and blood pressure is 62/40 mmHg. The most appropriate management is to

(A) administer atropine
(B) administer phenylephrine
(C) administer propranolol
(D) increase anesthetic depth
(E) intubate the trachea

ADVANCED Pediatric Cardiac

A woman at 39 weeks' gestation has been in labor for 12 hours. She has had nausea and vomiting for the past eight hours. Maternal arterial blood gas values are PaO1 85 mmHg, PaCO2 31 mmHg, and pH 7.50. Which of the following is the most likely cause of fetal distress occurring at this time?

(A) Hypocarbia-induced placental ischemia
(B) Impaired fetal oxyhemoglobin dissociation
(C) Shift to the left of the maternal oxyhemoglobin dissociation curve
(D) Maternal hypovolemia
(E) Maternal hypoxemia

ADVANCED OB

Assignment of a patient to an ASA physical status category is used to

(A) facilitate comparisons among different patient groups and institutions
(B) guide the choice of anesthetic technique
(C) permit accurate determination of charges for professional services
(D) predict anesthetic risk
(E) predict perioperative mortality

BASIC General

Electrocautery units operate at frequencies between 300 kHz and 2 mHz to

(A) avoid pacemaker interference
(B) minimize ECG tracing interference
(C) minimize the likelihood of ventricular fibrillation
(D) optimize hemostasis
(E) provide the best "cutting" current

BASIC Equipment & Physics

Compared with thiopental, methohexital is characterized by

(A) better absorption after rectal administration
(B) greater protein binding
(C) greater hepatic clearance
(D) larger volume of distribution
(E) more complete biotransformation

BASIC Pharmacology & Pharmacokinetics

At the end of an anesthetic in which a nondepolarizing muscle relaxant was administered, the least number of receptors are blocked

(A) after administration of neostigmine 5 mg and glycopyrrolate 1 mg
(B) if the tetanus is sustained at 30 Hz
(C) if the patient can sustain head lift for 5 sec
(D) when the ratio of twitch height T1:T4 is 0.8
(E) when tidal volume is normal

BASIC 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 diabetes mellitus in pregnancy is true?

(A) Beta-mimetic tocolytics cause maternal hypoglycemia
(B) Epidural anesthesia produces hyperglycemia
(C) Fetal insulin secretion is suppressed
(D) Maternal insulin does not cross the placenta
(E) Maternal insulin resistance develops abruptly after delivery

ADVANCED OB

A 23-year-old man who is receiving his first anesthetic has not resumed spontaneous ventilation two hours after receiving succinylcholine. The train-of-four monitor shows no twitch response. Which of the following is the most likely cholinesterase genotype in this patient?

(A) Atypical : atypical
(B) Fluoride-resistant : fluoride-resistant
(C) Fluoride-resistant : silent
(D) Normal : normal
(E) Normal : silent

ADVANCED Pharmacology & Pharmacokinetics General

Which of the following perioperative interventions decreases the risk for renal insufficiency in patients undergoing aortic aneurysm repair?

(A) Administration of furosemide
(B) Administration of mannitol
(C) Administration of renal-dose dopamine
(D) Epidural anesthesia
(E) Preoperative volume expansion

ADVANCED General