10 Random Questions
A 50-year-old woman develops stridor 10 hours after undergoing thyroidectomy. The most appropriate management is administration of which of the following drugs?
- (A) Albuterol
- (B) Calcium chloride
- (C) Ipratropium bromide
- (D) Racemic epinephrine
- (E) Triiodothyronine
Postoperatively, a patient is being mechanically ventilated by a constant-flow, pressure-cycled ventilator with the following initial settings: inspiratory/expiratory (I/E) ratio of 1:2, peak inspiratory pressure (PIP) of 25 cmH2O, and rate of 10/min. One hour later, the I/E ratio is 1:4. Which of the following would ensure that the minute ventilation is the same as that initially set?
- (A) Inflate the endotracheal tube cuff to prevent leakage
- (B) Double the respiratory rate
- (C) Decrease the expiratory pause until the I/E ratio is 1.0
- (D) Increase the PIP until the I/E ratio is 1:2
- (E) Increase the PIP to 50 cmH20
A multigravid woman is receiving oxytocin by infusion for augmentation of labor. Fetal heart rate is 190 bpm with beat-to-beat variability of 6 to 8 bpm. The most appropriate immediate action would be to
- (A) continue observation
- (B) sample fetal scalp blood
- (C) discontinue oxytocics
- (D) administer a beta-adrenergic blocker to the mother
- (E) deliver the fetus
Which of the following is more likely to occur with use of trimethaphan to induce hypotension than with use of nitroprusside?
- (A) A predictable decrease in mean arterial pressure
- (B) Increased mixed venous P02
- (C) Increased serum lactate concentration
- (D) Mydriasis
- (E) Reflex tachycardia
Each of the following affects the induction dose of thiopental EXCEPT
- (A) acute ethanol intoxication
- (B) chronic use of barbiturates
- (C) intravascular volume
- (D) rate of hepatic extraction of thiopental
- (E) serum albumin concentration
Following induction of anesthesia with sufentanil and pancuronium, a patient with left main coronary artery disease has a decrease in blood pressure from 110/70 to 60/40 mmHg. There is no change in heart rate or ECG. The most appropriate management of the hypotension is administration of
- (A) calcium chloride
- (B) ephedrine
- (C) epinephrine
- (D) isoproterenol
- (E) phenylephrine
A 54-year-old woman who is scheduled to undergo emergency exploratory laparotomy takes warfarin sodium for anticoagulation. Prothrombin time is 19 sec (control 12 sec). Which of the following agents is most appropriate to reverse the effects of warfarin?
- (A) Cryoprecipitate
- (B) Desmopressin (DDAVP)
- (C) Factor IX concentrate
- (D) Fresh frozen plasma
- (E) Pooled factor VIII
A patient has seizure activity 30 seconds after injection of 0.25% bupivacaine 2 ml with epinephrine 1:200,000 for stellate ganglion block. The most likely cause is
- (A) reaction to epinephrine in the anesthetic solution
- (B) anaphylactoid reaction to bupivacaine
- (C) subarachnoid injection of bupivacaine
- (D) peridural venous injection of bupivacaine
- (E) vertebral artery injection of bupivacaine
Spinal anesthesia at a T6 sensory level is most likely to improve cardiac output in patients with
- (A) aortic stenosis
- (B) asymmetric septal hypertrophy (IHSS)
- (C) chronic constrictive pericarditis
- (D) cor pulmonale
- (E) mitral regurgitation
Which of the lines shown in the graph illustrates the relationship of hematocrit and oxygen transport?
- (A) Line A
- (B) Line B
- (C) Line C
- (D) Line D
- (E) Line E