10 Random Questions
Which of the following is most indicative of reflex sympathetic dystrophy?
- (A) Dry skin
- (B) Dull pain that improves with movement
- (C) Fasciculations
- (D) Motor weakness
- (E) Pallor and cyanosis
The figure describes the uptake of nitrous oxide 75% by individual tissue groups (VRG = vessel-rich group, MG = muscle group, FG = fat group) and their sum (total uptake, TU). Which set of labels accurately describes the curves?
- (A) 1- MG, 2- FG, 3- VRG, 4- TU
- (B) 1- VRG, 2- MG, 3- FG, 4- TU
- (C) 1- FG, 2- MG, 3- TU, 4- VRG
- (D) 1- TU, 2- FG, 3- MG, 4- VRG
- (E) 1- TU, 2- VRG, 3- MG, 4- FG
The principal rationale for the use of warmed humidified inspired anesthetic gases in children is to
- (A) decrease postoperative respiratory complications
- (B) decrease postoperative shivering
- (C) preserve ciliary function
- (D) prevent dehydration
- (E) prevent evaporative heat loss
A 14-year-old girl with status asthmaticus is receiving oxygen 3 L/min through nasal prongs. Heart rate is 110 bpm. Arterial blood gas values are PaO2 90 mmHg, PaCO2 32 mmHg, and pH 7.46. If ventilation appears unchanged, which of the following is the most reliable sign of impending respiratory failure?
- (A) PaO2 of 80 mmHg
- (B) PaCO2 of 39 mmHg
- (C) Heart rate of 140 bpm
- (D) Increased wheezing
- (E) Deterioration of mental status
A 70-kg 58-year-old man with unstable angina is scheduled to undergo coronary artery bypass grafting. Intravenous heparin and nitroglycerin are administered for four days before surgery. Before initiating cardiopulmonary bypass, 21,000 units of heparin are administered through the central venous catheter; five minutes later, activated clotting time is 280 seconds. Which of the following is the most appropriate next step in management?
- (A) Discontinue nitroglycerin
- (B) Administer additional heparin
- (C) Administer cryoprecipitate
- (D) Administer fresh frozen plasma
- (E) Initiate cardiopulmonary bypass
The tracing indicates that the pacemaker generator is
- (A) malfunctioning
- (B) VVT sensing and capturing normally
- (C) VOO sensing and capturing normally
- (D) DVI sensing and capturing normally
- (E) VVI sensing and capturing normally
When methylmethacrylate is inserted into the femur, each of the following may occur EXCEPT
- (A) monomer metabolic breakdown
- (B) vasodilation
- (C) hypercarbia
- (D) hypoxia
- (E) increased intramedullary pressure
A 62-year-old patient who is undergoing femoral-popliteal arterial bypass grafting during general anesthesia develops supraventricular tachycardia. Heart rate is 165 bpm and blood pressure is 90/50 mmHg. Which of the following is the LEAST appropriate treatment of the tachycardia?
- (A) Adenosine
- (B) Esmolol
- (C) Phenylephrine
- (D) Procainamide
- (E) Verapamil
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
Intraoperatively, the occurrence of prominent "a" waves on the central venous pressure waveform can be explained by each of the following EXCEPT
- (A) acute right ventricular failure
- (B) atrial flutter
- (C) complete heart block
- (D) onset of junctional tachycardia
- (E) ventricular pacing