10 Random Questions
Compared with thiopental, methohexital is characterized by
- (A) better absorption after rectal administration
- (B) greater protein binding
- (C) greater hepatic clearance
- (D) larger volume of distribution
- (E) more complete biotransformation
Following delivery with pudendal block, a patient requires anesthesia for removal of a retained placenta. The most appropriate anesthetic is
- (A) epidural block
- (B) ketamine analgesia with midazolam for amnesia
- (C) opioid-based general endotracheal anesthetic
- (D) potent inhaled general endotracheal anesthetic
- (E) subarachnoid block
Which of the following is a cardiorespiratory effect of epidural block to a T4 sensory level?
- (A) Decreased expiratory reserve volume
- (B) Decreased tidal volume
- (C) Increased circulating catecholamine concentrations
- (D) Increased heart rate
- (E) Unchanged vital capacity
The potency of an inhalational anesthetic correlates best with its
- (A) vapor pressure
- (B) blood/gas partition coefficient
- (C) molar volume
- (D) brain/gas partition coefficient
- (E) oil/gas partition coefficient
Metoclopramide acts to
- (A) block dopamine receptors
- (B) decrease gastric acid production
- (C) decrease lower esophageal sphincter tone
- (D) delay gastric emptying
- (E) facilitate central cholinergic stimulation
A 25-year-old man with known rheumatic heart disease is being evaluated in the critical care unit. Despite decreasing cardiac output, mixed venous blood from a pulmonary artery catheter shows an increase in Sv02. Which of the following is the most likely cause?
- (A) Decreasing hematocrit
- (B) Hypothermia to 35°C
- (C) Metabolic alkalosis
- (D) Mitral regurgitation
- (E) Wedging of the catheter
Which of the following is an effect of clonidine?
- (A) Agitation
- (B) Salivation
- (C) Tachycardia
- (D) Tachypnea
- (E) Vasodilation
Which of the following findings is most likely in patients receiving intravenous milrinone?
- (A) Decreased left ventricular afterload
- (B) Decreased myocardial oxygen consumption
- (C) Increased atrioventricular conduction
- (D) Increased right ventricular preload
- (E) Stimulation of beta-adrenergic receptors
A 27-year-old man with chronic renal failure is to undergo revision of an arteriovenous graft. He insists on general anesthesia. Hemodialysis was completed two hours ago, and serum potassium concentration is now 5 mEq/L. Which of the following statements concerning anesthetic management of this patient is true?
- (A) Enflurane is contraindicated
- (B) Succinylcholine is contraindicated
- (C) Neostigmine will be required in larger than usual dosage
- (D) The duration of action of atracurium will be prolonged
- (E) The duration of action of propofol will be unchanged
The illustration depicts flow-volume loops for the same person at two different times in his life. Which of the following is indicated by the dotted loop?
- (A) Bronchial tumor
- (B) Chronic asthmatic bronchitis
- (C) Morbid obesity
- (D) Paralysis of a vocal cord
- (E) Subglottic stenosis