Anesthesia Hub -

10 Random Questions

The increased resistance of severely burned patients to pancuronium is primarily due to

(A) enhanced urinary excretion of pancuronium
(B) decreased number of presynaptic cholinergic receptors
(C) increased number of postsynaptic cholinergic receptors
(D) increased rate of metabolism of pancuronium
(E) increased volume of distribution of pancuronium

Awakening after a single dose of thiopental is caused by redistribution from the brain primarily to which of the following sites?

(A) Fat
(B) Heart
(C) Liver
(D) Lung
(E) Skeletal muscle

BASIC Pharmacology & Pharmacokinetics

A direct 5-joule shock is unsuccessful in converting ventricular fibrillation occurring after discontinuation of cardiopulmonary bypass. The most appropriate next step is to

(A) administer calcium chloride
(B) administer bretylium
(C) administer regular insulin
(D) administer sodium bicarbonate
(E) increase shock energy

Myofascial pain is an example of

(A) a central pain state
(B) neuropathic pain
(C) psychogenic pain
(D) somatic pain
(E) visceral pain

ADVANCED Regional & Pain

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

A 70-kg patient is anesthetized for a craniotomy in the sitting position. Minute ventilation through a circle system is 15 L/min; PetC02 is 65 mmHg. Which of the following is the most likely cause of the increased PetC02?

(A) Inadequate flow of fresh gas
(B) Incompetent expiratory valve
(C) Intubation of the right mainstem bronchus
(D) Light anesthesia
(E) Venous air embolism

In a patient undergoing liver transplantation, sodium bicarbonate and calcium chloride are administered immediately before reperfusion of the transplanted liver to counteract

(A) coagulopathy
(B) decreased cardiac output
(C) hyperkalemia
(D) hypermagnesemia
(E) hypotension

ADVANCED General

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 60-kg, 17-year-old girl with severe idiopathic scoliosis is scheduled for Harrington rod fixation. Which of the following respiratory parameters is compatible with this disorder?

(A) Alveolar-to-arterial oxygen tension difference (A-aDO2) less than 100 mmHg while breathing pure oxygen
(B) FEV1/FVC ratio less than 50%
(C) Forced vital capacity less than 2000 ml
(D) Intrapulmonary shunt less than 10%
(E) Normal pulmonary vascular resistance

ADVANCED Respiratory & Critical Care Pediatric

Upon removal of the epidural catheter after uneventful labor and delivery in a 25-year-old primiparous woman, approximately 1.2 cm of the Teflon catheter is left behind in the epidural space. The patient is informed of the complication. The most appropriate management is

(A) immediate surgical removal
(B) prophylactic antibiotics
(C) lumbar myelogram
(D) monthly neurologic examinations
(E) no intervention