Anesthesia Hub -

10 Random Questions

A newly developed volatile anesthetic has a MAC of 10% in oxygen for adults. Which of the following statements concerning this anesthetic is true?

(A) The expected MAC of this drug in combination with 60% nitrous oxide is 7.5%
(B) The dose of this drug required to anesthetize a patient with acute amphetamine intoxication is less than the dose required for a normal patient
(C) The potency of this drug is 25% of a drug with a MAC of 2.5%
(D) The dose of this drug required to suppress the hormonal response to surgical incision is less than the MAC value
(E) The MAC of this drug is decreased by metabolic alkalosis

BASIC Pharmacology & Pharmacokinetics

Coughing that occurs during awake intubation is prevented by local anesthetic block of which of the following nerves?

(A) Glossopharyngeal
(B) Hypoglossal
(C) Recurrent laryngeal and glossopharyngeal
(D) Recurrent laryngeal and superior laryngeal
(E) Superior laryngeal and glossopharyngeal

ADVANCED Regional & Pain

In a 35-year-old patient, which of the following is associated with an increased duration of clinical narcosis following infusion of a total dose of 10 mg/kg thiopental over three hours?

(A) Alcoholism in remission
(B) Asthma
(C) Fever
(D) Obesity
(E) Use of appetite suppressants

BASIC Pharmacology & Pharmacokinetics

Each of the following would slow induction with a volatile anesthetic agent EXCEPT

(A) hypoalbuminemia
(B) hyperlipemia
(C) clean rubber tubing in the circle system
(D) fresh soda lime
(E) obesity

In a patient with 20% pulmonary shunt and a PaO2 of 60 mmHg, cardiac output suddenly decreases from 5 L/min to 3 L/min. Oxygen consumption is unchanged. As a result, the PaO2 will

(A) increase slightly because of decreased shunt blood flow
(B) decrease slightly because of decreased mixed venous PO2
(C) increase because of decreased affinity of hemoglobin for oxygen
(D) decrease because of an increased dead space to tidal volume ratio
(E) increase because of increased pulmonary oxygen uptake per milliliter of blood

BASIC Respiratory & Critical Care

Preoperative parenteral administration of vitamin K is LEAST likely to decrease a prolonged prothrombin time in a patient with

(A) end-stage hepatocellular disease
(B) malabsorption associated with ulcerative colitis
(C) obstructive jaundice
(D) long-term antibiotic therapy
(E) warfarin-induced prothrombin deficiency

Which of the following factors is LEAST likely to affect serum ionized calcium concentration following blood transfusion?

(A) Age of blood transfused
(B) Amount of blood transfused
(C) Body temperature
(D) Serum pH
(E) Rate of transfusion

BASIC Transfusions & Fluids

Block of the superficial cervical plexus is performed at which location?

(A) At the midposterior border of the sternocleidomastoid muscle
(B) In the interscalene groove
(C) Over the mastoid process
(D) Over the transverse process of C4
(E) Over Chassaignac's tubercle

ADVANCED Regional & Pain

A 25-year-old woman is receiving magnesium sulfate for eclampsia at 36 weeks' gestation. Each of the following is a maternal effect of this treatment EXCEPT

(A) sedation
(B) sensitization to depolarizing muscle relaxants
(C) sensitization to nondepolarizing muscle relaxants
(D) decreased uterine blood flow
(E) loss of deep tendon reflexes prior to significant cardiac dysfunction

The laryngeal mask airway

(A) causes more hemodynamic stimulation than an oropharyngeal airway
(B) is contraindicated in patients with cervical spine instability
(C) is more easily inserted when cricoid pressure is applied
(D) may serve as a temporary airway in case of a failed rapid sequence intubation
(E) requires administration of a muscle relaxant to avoid laryngospasm during insertion