Anesthesia Hub -

10 Random Questions

During a right lower lobe resection, SpO2 decreases from 99% to 70% after institution of one-lung ventilation. FiO2 is 1.0. The most appropriate management is to

(A) administer an inhaled bronchodilator
(B) apply continuous positive airway pressure to the right lung
(C) apply positive end-expiratory pressure to the left lung
(D) increase tidal volume
(E) reinflate the right lung

ADVANCED General

Which of the following statements concerning the risk of acquiring hepatitis from a blood transfusion is true?

(A) Most patients with post-transfusion hepatitis become clinically jaundiced
(B) Most cases of post-transfusion hepatitis are caused by the hepatitis B virus
(C) The risk for hepatitis is less than the risk for AIDS
(D) The risk for post-transfusion hepatitis is less than 1% per unit transfused
(E) The incidence of post-transfusion hepatitis has remained unchanged over the past decade

BASIC Transfusions & Fluids

Following transfusion of packed red blood cells during general anesthesia, the patient's blood pressure decreases, heart rate and temperature increase, and hemoglobinuria and diffuse oozing are observed. Which of the following is the most appropriate first step in management?

(A) Administration of hydrocortisone
(B) Administration of fresh frozen plasma
(C) Administration of epsilon-aminocaproic acid
(D) Rapid infusion of crystalloid
(E) Transfusion of platelet concentrates

BASIC Transfusions & Fluids General

A previously healthy 28-year-old man is admitted to the emergency department with a probable opioid overdose. Arterial blood gas values are: PaO2 49 mmHg, PaCO2 76 mmHg, and pH 7.12 while breathing room air. Which of the following statements is true?

(A) Aspiration of gastric contents must have occurred
(B) Hypoventilation alone can explain the acidosis and hypoxemia
(C) The hypoxemia is probably due to noncardiogenic pulmonary edema
(D) Naloxone should be administered only if the patient is normothermic
(E) Pure oxygen is contraindicated

BASIC Respiratory & Critical Care

The two E oxygen cylinders on an anesthesia machine have pressure readings of 1100 psi each. At an oxygen flow of 3 L/min, there will be sufficient oxygen for approximately

(A) 2.5 hours
(B) 3.5 hours
(C) 5.5 hours
(D) 7 hours
(E) 8 hours

BASIC Equipment & Physics

Which of the following is most effective in preventing intraoperative hypothermia in adults?

(A) Heating and humidifying inspired gases
(B) Maintaining a warm operating room
(C) Using a circulating warm-water mattress
(D) Using reflective coverings
(E) Warming intravenous fluids

BASIC Equipment & Physics

Which of the following fluids will restore circulating blood volume with the smallest infused volume?

(A) Albumin 25%
(B) Dextrose 5% in saline solution 0.45%
(C) Hydroxyethyl starch 6%
(D) Lactated Ringer's solution
(E) Type-specific whole blood

Anesthesia is induced with halothane in a 3-year-old girl. Sixty seconds after administration of succinylcholine 1 mg/kg intravenously, heart rate decreases rapidly from 120 to 60 bpm. The most likely cause is

(A) acute hyperkalemia
(B) failure to pretreat with a nondepolarizing relaxant
(C) halothane overdose
(D) muscarinic activity
(E) sympathetic ganglionic blockade

ADVANCED Pharmacology & Pharmacokinetics Pediatric

A 27-year-old man with a one-month history of quadriplegia at a C6 level is given general anesthesia for cystoscopy. During the cystoscopy, blood pressure suddenly increases to 220/120 mmHg. Further evaluation is most likely to show

(A) atrial fibrillation (ventricular rate 100 bpm)
(B) paroxysmal atrial tachycardia (150 bpm)
(C) sinus bradycardia
(D) piloerection above the level of C6
(E) sweating above the level of C6

BASIC General

The acute onset of hypotension without a decrease in mixed venous oxygen saturation is most likely associated with the onset of

(A) hemorrhage
(B) myocardial infarction
(C) pulmonary edema
(D) pulmonary embolus
(E) sepsis

BASIC General