10 Random Questions
Which of the following relationships is indicated by the curve illustrated in the graph shown?
- (A) Intracranial blood volume (X) and intracranial pressure (Y)
- (B) PaCO2 (X) and minute ventilation (Y)
- (C) PaO2 (X) and hemoglobin saturation (Y)
- (D) Preload (X) and stroke volume (Y)
- (E) Systemic arterial pressure (X) and cerebral blood flow (Y)
A 55-year-old woman receiving chronic dialysis for renal failure comes to the emergency department with a perforated viscus. She has chest pain. Heart rate is 124 bpm, blood pressure is 90/60 mmHg, and respiratory rate is 18/min. Surgery is to be performed within the hour. Which of the following best describes this patient's ASA physical status classification?
- (A) III
- (B) III E
- (C) IV
- (D) IV E
- (E) V E
Ten days after sustaining burns over 40% of his body surface area, a patient requires greater than expected doses of vecuronium for adequate relaxation of skeletal muscle. The primary cause is increased
- (A) plasma protein binding of d-tubocurarine
- (B) metabolism of d-tubocurarine
- (C) number of acetylcholine receptors
- (D) renal clearance of d-tubocurarine
- (E) blood flow to skeletal muscle
Which of the following procedures is most specific for diagnosing reflex sympathetic dystrophy in a patient with pain of the lower extremity?
- (A) Caudal epidural local anesthetic block
- (B) Differential spinal anesthesia
- (C) Intravenous regional administration of bretylium
- (D) Lumbar epidural administration of a corticosteroid
- (E) Paramedian L1-L5 facet injections of lidocaine
To eliminate all pain during the second stage of labor, a lumbar epidural block must extend from
- (A) T6 to LI
- (B) T10 to LI
- (C) T10 to SI
- (D) T10 to S4
- (E) LI to S5
Which of the following characteristics of local anesthetics is associated with long duration of action?
- (A) High degree of lipid solubility
- (B) High degree of protein binding
- (C) High molecular weight
- (D) High pKa
- (E) Presence of ester linkage
The development of tachycardia is most hazardous in patients with which of the following conditions?
- (A) Aortic insufficiency
- (B) Cardiac tamponade
- (C) Mitral insufficiency
- (D) Mitral stenosis
- (E) Ventricular septal defect
Severe nausea and vomiting in the PACU is most effectively treated with a drug that acts as an antagonist at which of the following receptors?
- (A) Alpha-adrenergic
- (B) Beta-adrenergic
- (C) Dopamine
- (D) GABA
- (E) Glutamate
An asymptomatic 38-year-old woman is scheduled for elective cesarean delivery. The preoperative EKG shows left axis deviation that was not present one year ago. The most appropriate next step is to
- (A) postpone the procedure and consult a cardiologist
- (B) postpone the procedure and obtain an echocardiogram
- (C) proceed with the procedure after administration of digitalis
- (D) proceed with the procedure but avoid inhalational agents
- (E) proceed without intervention since this is a normal finding
Each of the following is associated with an increased alveolar-arterial oxygen tension difference EXCEPT
- (A) advanced age
- (B) atelectasis
- (C) decreased cardiac output
- (D) decreased Fl02
- (E) right-to-left intracardiac shunt