Anesthesia Hub -

10 Random Questions

The recommended agent for decontamination of anesthetic equipment splattered with blood containing HIV is

(A) household bleach
(B) hydrogen peroxide
(C) iodine solution
(D) isopropyl alcohol
(E) Lysol solution

A patient with end-stage renal disease has prolonged ventilatory depression after administration of morphine. The most likely cause is increased

(A) serum concentration of morphine-6-glucuronide
(B) elimination half-life of morphine
(C) opioid receptors
(D) receptor affinity
(E) volume of distribution

BASIC Pharmacology & Pharmacokinetics

The Bain circuit

(A) provides nearly identical delivered and inspired anesthetic concentrations
(B) has the fresh gas flow inlet near the reservoir bag
(C) is a nonrebreathing circuit at any fresh gas flow rate
(D) is most efficient during spontaneous ventilation
(E) has a time constant greater than 1 minute for change in inspired anesthetic concentrations

BASIC Equipment & Physics

Intrathecally administered opioids exert their analgesic effects primarily in the

(A) brain stem
(B) fourth ventricle
(C) spinal nerve roots
(D) spinothalamic tracts
(E) substantia gelatinosa

BASIC Pharmacology & Pharmacokinetics

At equipotent doses, which of the following opioids is most likely to migrate cephalad in cerebrospinal fluid after epidural administration?

(A) Fentanyl
(B) Hydromorphone
(C) Meperidine
(D) Morphine
(E) Sufentanil

BASIC Pharmacology & Pharmacokinetics Regional & Pain

A 54-year-old man is scheduled for open reduction of a fracture sustained when he jumped from a burning building. The carboxyhemoglobin concentration is 25%. Which of the following is the most reliable indicator of adequate oxygenation during general anesthesia?

(A) PaO2 of 300 mmHg
(B) pH of 7.38 with a PaCO2 of 41 mmHg
(C) Mixed venous PO2 of 45 mmHg
(D) Oxyhemoglobin saturation of 100% measured by co-oximeter
(E) SpO2 of 100% measured by pulse oximeter

BASIC Respiratory & Critical Care

A 38-year-old woman with hyperthyroidism is undergoing open reduction and internal fixation of a fractured humerus with isoflurane anesthesia. Intraoperatively her heart rate increases to 120 bpm with occasional premature ventricular contractions. The most appropriate therapy at this time is to

(A) discontinue isoflurane
(B) administer edrophonium
(C) administer esmolol
(D) administer lidocaine
(E) administer propylthiouracil

ADVANCED General

Which of the following statements concerning fetal hemoglobin is true?

(A) It makes up less than 50% of the total hemoglobin in the neonate
(B) It has less affinity for oxygen than adult hemoglobin
(C) It binds with greater affinity to 2,3-DPG than adult hemoglobin
(D) It shifts the oxyhemoglobin dissociation curve to the left
(E) It has a P50 of 27 mmHg

ADVANCED Pediatric

Preoperative evaluation of a patient who has marked malnutrition will demonstrate each of the following EXCEPT

(A) decreased respiratory muscle function
(B) decreased serum albumin concentration
(C) decreased metabolic rate
(D) suppressed immune function
(E) decreased extracellular fluid volume

BASIC General

A 78-year-old man who is scheduled for an inguinal hernia repair has a preoperative ECG showing left bundle branch block. He has had no symptoms of cardiovascular disease. This ECG finding most likely indicates

(A) cardiac disease
(B) the need for spinal anesthesia
(C) an electrolyte disturbance
(D) the need for insertion of a temporary pacemaker
(E) a normal finding in a patient of this age

BASIC General