Anesthesia Hub -

10 Random Questions

Perception of pain from cutaneous sources involves each of the following EXCEPT

(A) frontal lobe gyri
(B) lateral spinothalamic tracts
(C) periaqueductal gray matter
(D) spinal dorsal horn lamina V
(E) unmyelinated C fibers

BASIC Regional & Pain

Which of the following statements concerning the choice of nitroprusside or nitroglycerin to induce deliberate hypotension is true?

(A) Nitroglycerin is more potent
(B) Nitroglycerin produces hypotension by acting on both arterial and venous capacitance vessels
(C) Nitroprusside produces less rebound hypertension on discontinuation
(D) The toxic effects of nitroprusside are independent of dose
(E) The therapeutic effects of nitroprusside may persist on discontinuation

An elderly man has an acute dissection of the descending thoracic aorta. Which of the following antihypertensive therapies is most likely to extend the dissection?

(A) Esmolol infusion
(B) Nitroglycerin infusion
(C) Nitroprusside infusion
(D) Nitroprusside infusion combined with a beta-adrenergic blocker
(E) Trimethaphan infusion

ADVANCED General

In calculating the fluid requirements for a newborn undergoing repair of an omphalocele, the third-space loss should be replaced by

(A) 0.9% saline solution
(B) 2.5% dextrose in 0.45% saline solution
(C) 5% dextrose in lactated Ringer's solution
(D) 5% dextrose in water
(E) 5% dextrose in 0.25% saline solution

ADVANCED Pediatric

Three hours prior to induction of anesthesia for elective laparotomy, a 40-kg 8-year-old boy is anxious and clings to his parents. Which of the following preanesthetic medications is most appropriate?

(A) Oral ketamine
(B) Oral midazolam
(C) Rectal methohexital
(D) Intramuscular droperidol
(E) Intramuscular promethazine

ADVANCED Pediatric

Positive end-expiratory pressure is effective for treatment of hypoxia resulting from each of the following EXCEPT

(A) cardiogenic pulmonary edema
(B) intraoperative Trendelenburg position
(C) lateral position during total hip replacement
(D) lung contusion
(E) status asthmaticus

BASIC Respiratory & Critical Care

A 62-year-old woman with polycythemia vera is scheduled to undergo total knee arthroplasty using a tourniquet. Preoperative hematocrit is 60%. Which of the following is the most appropriate action?

(A) Perform total knee arthroplasty without use of a tourniquet
(B) Preoperative reduction of the hematocrit to 45% to 50%
(C) Prophylactic administration of aprotonin during surgery
(D) Prophylactic administration of epsilon-aminocaproic acid during surgery
(E) Prophylactic administration of low-dose heparin during surgery

For 30 minutes, a patient has been receiving oxygen 2 L, nitrous oxide 2 L, and halothane from an agent-specific vaporizer set at 1%. A mass spectrometer sampling gas from the patient's airway shows an end-tidal halothane concentration of 0.7%. The most likely explanation for this difference is

(A) hyperventilation
(B) low cardiac output
(C) the second-gas effect
(D) tissue solubility of halothane
(E) vaporizer temperature less than 19°C

BASIC Pharmacology & Pharmacokinetics

Which of the following statements concerning cardiovascular physiology in a healthy term neonate is true?

(A) Heart rate is increased in response to hypoxemia
(B) Heart rate increases reflexly in response to hypotension
(C) Stroke volume increases in response to decreased systemic vascular resistance
(D) Stroke volume increases in response to bradycardia
(E) Stroke volume is near-maximal under resting conditions

ADVANCED Pediatric

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

ADVANCED Respiratory & Critical Care Pediatric