Anesthesia Hub -

10 Random Questions

Which of the following statements concerning hyperkalemia after succinylcholine administration to a patient with a spinal cord injury is true?

(A) It is unlikely to occur if the lesion is located below T6
(B) It is unlikely to occur within 24 hours of the injury
(C) It is unlikely to occur more than 60 days after the initial injury
(D) It is prevented by pretreatment with small doses of a nondepolarizing agent
(E) It is decreased in magnitude by pretreatment with calcium chloride

BASIC Pharmacology & Pharmacokinetics

A 7-year-old, obese, 30-kg boy was anesthetized using an adult circle system containing a 3-liter bag and mask. Induction with nitrous oxide (2 liters), oxygen (1 liter), and enflurane 3% was characterized by three minutes of hyperventilation followed by apnea. Forty-five seconds later, the child moved and became difficult to control. The most likely cause of the movement is

(A) decreased alveolar concentration of enflurane during the period of apnea
(B) excessive uptake of enflurane by the child's fat
(C) higher fresh gas flows required with use of an adult circle system in a child
(D) convulsions induced by enflurane
(E) hypoxia developing during the period of apnea

ADVANCED Pediatric

Which of the following is the most likely finding in the affected extremity during the acute stage of reflex sympathetic dystrophy?

(A) Dermatomal distribution of pain
(B) Hypesthesia
(C) Increased growth of hair and nails
(D) Localized edema
(E) Radiographic evidence of osteoporosis

Which of the following combinations of anesthetic and incorrect vaporizer results in the smallest error in delivered concentration?

(A) Sevoflurane in a halothane vaporizer
(B) Sevoflurane in an isoflurane vaporizer
(C) Halothane in a desflurane vaporizer
(D) Isoflurane in a halothane vaporizer
(E) Sevoflurane in a desflurane vaporizer

BASIC Equipment & Physics

A 20-kg, 6-year-old boy is undergoing strabismus surgery under anesthesia with sevoflurane, nitrous oxide, and oxygen. The heart rate suddenly decreases from 85 to 40 bpm. Which of the following is the most appropriate first step in management?

(A) Decrease the depth of anesthesia
(B) Increase the depth of anesthesia
(C) Hyperventilate the patient
(D) Administer atropine
(E) Stop the surgical procedure

ADVANCED Pediatric

Which of the following increases the cephalad spread of hyperbaric intrathecal local anesthetics?

(A) Cephalad-directed needle bevel
(B) Coughing
(C) Lithotomy position
(D) Obesity
(E) Rapid injection

The syndrome of inappropriate ADH secretion is characterized by

(A) ADH secretion unrelated to serum osmolality
(B) decreased ADH secretion in response to hypovolemia
(C) highly dilute urine
(D) hypernatremia
(E) negative water balance

ADVANCED General

The mortality rate of patients given drug A is 12% (8 of 66) and the mortality rate of patients given drug B is 15% (10 of 66). Which of the following tests is most appropriate to compare these mortality rates?

(A) t-Test for paired data
(B) t-Test for unpaired data
(C) Wilcoxon rank test
(D) Chi-square test
(E) Analysis of covariance

BASIC General

A 57-year-old man with hepatocellular disease is scheduled to undergo a colectomy for colon cancer. Preoperative laboratory studies show a plasma albumin concentration of 2.4 g/dl (normal = 3.5 to 5.5 g/dl); prothrombin time is 16 sec (control 12 sec). Which of the following statements concerning the anesthetic management of this patient is true?

(A) Atracurium will have a prolonged duration of action
(B) The risk for perioperative hyperglycemia is increased
(C) Mivacurium will have a shortened duration of action
(D) The unbound fraction of thiopental will be increased
(E) Vitamin K injection will normalize the prothrombin time

BASIC General

After the first 70 minutes of a transurethral resection of the prostate, a 70-year-old man becomes confused and has tachycardia, hypertension, and shortness of breath. Serum sodium concentration is 116 mEq/L. After informing the surgeon that the procedure should be terminated as soon as possible, the most appropriate next step would be to

(A) administer furosemide
(B) administer labetalol
(C) administer 3% sodium chloride
(D) change the irrigating solution to normal saline
(E) induce general endotracheal anesthesia

ADVANCED General