Anesthesia Hub -

10 Random Questions

A 65-year-old man has a history of alcohol abuse. Which of the following preoperative serum concentrations would provide the best assessment of synthetic hepatic function?

(A) Albumin
(B) Alkaline phosphatase
(C) Bilirubin
(D) Globulin
(E) Transaminases

BASIC General

During anesthesia with nitrous oxide 65% in oxygen, fentanyl, and pancuronium, nitroprusside is administered to decrease arterial pressure to 85/50 mmHg. A decrease in PaO2 from 120 to 65 mmHg is most likely caused by

(A) cyanide toxicity
(B) depressed cardiac output
(C) mild hypercarbia
(D) metabolic acidosis
(E) pulmonary vasodilation

BASIC Pharmacology & Pharmacokinetics

A 30-kg patient with asthma is receiving general anesthesia and being mechanically ventilated with a measured tidal volume of 300 mL. Increasing the fresh gas flow from 3 L/min to 9 L/min without changing the ventilatory rate or I:E ratio will result in

(A) decreased physiologic dead space
(B) increased delivered tidal volume
(C) increased end-expired carbon dioxide
(D) unchanged delivered minute volume
(E) unchanged peak inspiratory pressure

BASIC Equipment & Physics Respiratory & Critical Care

Which of the following findings is most likely in patients with acute transection of the spinal cord at the level of C6?

(A) Autonomic hyperreflexia
(B) Hyperkalemia with administration of succinylcholine
(C) Hypotension
(D) Increased pulmonary blood flow
(E) Tachycardia

ADVANCED General Neuro

Each of the following conditions can be accurately evaluated with transesophageal echocardiography EXCEPT

(A) intimal tear at the aortic arch
(B) intracardiac air
(C) left atrial thrombus
(D) patent foramen ovale
(E) right atrial myxoma

ADVANCED Cardiac

A 65-kg man is scheduled for wrist surgery with intravenous regional anesthesia with 0.5% lidocaine 50 ml. Which of the following statements is true?

(A) This anesthetic is contraindicated if the patient has sickle cell disease
(B) Mottling of the skin after injection dictates abandonment of the technique
(C) Tourniquet discomfort is an indication to inject more local anesthetic
(D) Bupivacaine 0.5% could be substituted to prolong anesthesia
(E) Epinephrine (1:400,000) should be added to prolong anesthesia

ADVANCED Regional & Pain

With acute carbon monoxide poisoning

(A) P50 is decreased
(B) Pa02 is decreased
(C) arterial oxygen saturation is increased
(D) oxygen-carrying capacity of blood is normal
(E) 2,3-diphosphoglycerate concentration in erythrocytes is increased

Which of the following factors causes a decrease in mixed venous oxygen saturation?

(A) Arteriovenous fistula
(B) Decreased hemoglobin concentration
(C) Decreased oxygen consumption
(D) Increased cardiac output
(E) Nitroprusside toxicity

BASIC Respiratory & Critical Care

Which of the following statements best describes "screening" when blood is ordered for type and screen?

(A) Red blood cells are mixed with serum containing known antigens
(B) Red blood cells are mixed with serum from the pool of potential donors
(C) Red blood cells are mixed with red blood cells from the pool of potential donors
(D) Serum is mixed with red blood cells that contain known antigens
(E) Serum is mixed with red blood cells from the pool of potential donors

A patient is placed in the prone jackknife position for lumbar subarachnoid injection of tetracaine 10 mg in 10 ml of preservative-free sterile water. Which of the following results is most likely?

(A) Respiratory insufficiency
(B) Sensory and motor block at T4-S1
(C) Sensory and motor block at L1-S5
(D) Sensory loss without motor block at L1-S5
(E) Sensory and motor block at S3-S5

ADVANCED Regional & Pain