Anesthesia Hub -

10 Random Questions

Which of the following statements about thiopental is true?

(A) Rapid uptake into maternal tissues limits its transfer to the fetus
(B) Its short duration of action is due to its extensive binding to plasma proteins
(C) Accumulation in fat leads to acute tolerance
(D) Alkalinity of solution causes respiratory depression
(E) Uptake into brain is slowed by respiratory acidosis

BASIC Pharmacology & Pharmacokinetics

The concentration of bupivacaine is higher in maternal blood than in fetal blood because

(A) bupivacaine is metabolized in the placenta
(B) maternal blood has a higher pH
(C) maternal blood has greater plasma protein binding
(D) maternal hemoglobin has a higher affinity for bupivacaine
(E) placental transfer of bupivacaine is limited

ADVANCED Pharmacology & Pharmacokinetics OB

Neostigmine administered intravenously without atropine can produce each of the following EXCEPT

(A) arousal
(B) bradycardia
(C) bronchoconstriction
(D) increased gastric motility
(E) increased urinary bladder tone

BASIC Pharmacology & Pharmacokinetics

Which of the following findings necessitates the preoperative insertion of a ventricular pacemaker in a 48-year-old man scheduled to undergo cholecystectomy?

(A) Atrial flutter with 3:1 atrioventricular block
(B) Bifascicular (right bundle branch block and left anterior hemiblock) block
(C) Left bundle branch block with first-degree atrioventricular block
(D) Second-degree (Mobitz I) atrioventricular block
(E) Second-degree (Mobitz II) atrioventricular block

ADVANCED Cardiac

Each of the following values is associated with acute tubular necrosis EXCEPT

(A) urine osmolality of 200 mOsm/L
(B) urine sodium concentration of 15 mEq/L
(C) urine specific gravity of 1.009
(D) urine/serum osmolality ratio of 1.2
(E) fractional excretion of sodium of 4%

BASIC General

Two hours after coronary artery bypass grafting, a 60-year-old man has a heart rate of 140 bpm and blood pressure of 80/60 mmHg. Cardiac index is 1.5 L/min/m2. Central venous pressure is 23 mmHg with large a-waves in the right atrial pressure tracing. A pulsus paradoxus of 6 mmHg is noted. Which of the following is the most likely diagnosis?

(A) Atrial flutter
(B) Cardiac tamponade
(C) Hypovolemia
(D) Junctional tachycardia
(E) Tension pneumothorax

ADVANCED Cardiac

A patient undergoes differential spinal block for evaluation of persistent foot pain. If the pain returns coincident with a decrease in skin temperature, which of the following is the most appropriate conclusion?

(A) A somatic origin is ruled out
(B) The patient has causalgia
(C) The patient has peripheral vascular disease
(D) The pain is caused by central neuropathy
(E) Lumbar sympathetic blocks are indicated

ADVANCED Regional & Pain

Following pneumonectomy, a paralyzed patient being mechanically ventilated has the following arterial blood gas values: PaO2 71 mmHg, PaCO2 55 mmHg, pH 7.29. SvO2 is 45%. The most likely explanation for this SvO2 is

(A) decreased red cell mass
(B) high cardiac output
(C) hypothermia
(D) peripheral left-to-right arteriovenous shunt
(E) ventilation / perfusion mismatch

ADVANCED Respiratory & Critical Care General

In a patient taking a beta-adrenergic blocker, the drug most likely to produce atrioventricular junctional block is

(A) diltiazem
(B) fentanyl
(C) halothane
(D) nifedipine
(E) verapamil

BASIC Pharmacology & Pharmacokinetics

Which of the following statements concerning relationships among alveolar pressure, volume, and surface tension is true?

(A) Surface tension of surfactant decreases as alveolar volume decreases
(B) Surface tensions of water and of surfactant behave similarly as volume decreases
(C) Changes in alveolar surface tension with volume are the same during expansion as during contraction
(D) Pressure in the alveolus is inversely related to surface tension
(E) Pressure in the alveolus is directly related to alveolar radius

BASIC Respiratory & Critical Care