10 Random Questions
Which of the following statements concerning air embolism during intracranial operations is true?
- (A) It does not occur in supine patients
- (B) It is prevented by positive end-expiratory pressure
- (C) It is confined to the right side of the heart and the pulmonary vasculature
- (D) It is detectable by measurement of end-tidal nitrogen
- (E) It is most efficiently treated by aspiration from a pulmonary artery catheter
In a patient undergoing liver transplantation, sodium bicarbonate and calcium chloride are administered immediately before reperfusion of the transplanted liver to counteract
- (A) coagulopathy
- (B) decreased cardiac output
- (C) hyperkalemia
- (D) hypermagnesemia
- (E) hypotension
A 24-year-old woman with abruptio placentae at 38 weeks' gestation has bleeding at the site of the intravenous catheter. Which of the following is the most likely cause?
- (A) Diffuse vasculitis
- (B) Disseminated intravascular coagulation
- (C) Isolated factor VIII deficiency
- (D) Primary fibrinolysis
- (E) Vitamin K deficiency
Brain stem auditory evoked potentials are most likely to be absent during which of the following?
- (A) Anesthesia with 1.5 MAC isoflurane
- (B) Barbiturate coma
- (C) Hypotension to a mean arterial pressure of 50 mmHg
- (D) Surgical retraction of the temporal lobe
- (E) Surgical traction on the pons
Which of the following changes is most likely in the patient whose pulmonary pathology is schematically illustrated?
- (A) Decreased diffusing capacity
- (B) Decreased PaO2
- (C) Decreased pH
- (D) Increased PaCO2
- (E) Increased Vd/Vt
A 30-year-old woman has an abrupt change from sinus to nodal rhythm with unchanged heart rate on ECG during induction of halothane anesthesia. Which of the following is the most likely result of this change?
- (A) Decreased jugular venous pulsation
- (B) Decreased mean arterial pressure
- (C) Decreased systemic vascular resistance
- (D) Increased cardiac output
- (E) Increased pulse 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
Which of the following parts of the infant's airway determines the appropriate diameter of a nasotracheal tube?
- (A) Nares
- (B) Glottis
- (C) Vocal cords
- (D) Cricoid cartilage
- (E) Third tracheal ring
Which of the following statements regarding carbon monoxide poisoning is true?
- (A) Breathing 100% oxygen at 1 atmosphere reduces the carboxyhemoglobin half-life
- (B) Effective treatment includes administration of methylene blue
- (C) It is commonly associated with respiratory acidosis
- (D) It is incompatible with a normal Sp02 while breathing room air
- (E) The oxyhemoglobin dissociation curve is shifted to the right
The laryngeal mask airway
- (A) causes more hemodynamic stimulation than an oropharyngeal airway
- (B) is contraindicated in patients with cervical spine instability
- (C) is more easily inserted when cricoid pressure is applied
- (D) may serve as a temporary airway in case of a failed rapid sequence intubation
- (E) requires administration of a muscle relaxant to avoid laryngospasm during insertion