10 Random Questions
A 35-year-old woman who takes a diuretic daily for chronic hypertension has a serum potassium concentration of 3.1 mEq/L on the morning of an elective hysterectomy. An EKG shows left ventricular hypertrophy. The most appropriate management is to
- (A) consult with a cardiologist before proceeding
- (B) initiate oral potassium replacement and proceed with the operation when potassium concentration is normal
- (C) initiate intravenous potassium replacement and proceed with the operation
- (D) initiate intravenous potassium replacement and proceed with the operation when potassium concentration is 4 mEq/L
- (E) proceed with the operation without intervention
A patient is in sinus rhythm but has no pulse during cardiopulmonary resuscitation. There is marked resistance to positive pressure ventilation and breath sounds are difficult to hear bilaterally. The endotracheal tube is clearly in the trachea. The most appropriate next step in management is to
- (A) administer isoetharine by inhalation
- (B) apply electrical countershock
- (C) insert needles in the left and right chest
- (D) order a roentgenogram of the chest
- (E) start an infusion of aminophylline
A 60-year-old obese man who has an antithrombin III deficiency is scheduled for radical prostatectomy. Prior to the operation this patient should receive
- (A) fresh frozen plasma
- (B) vitamin K
- (C) epsilon-aminocaproic acid
- (D) heparin
- (E) none of the above
A blood sample is taken from a patient whose body temperature is 30°C. In which direction will the pH, PCCX, and P02 change when measured in the blood gas machine at 37°C? (pH, PCO2, PO2)
- (A) Increase Decrease Decrease
- (B) Decrease Increase Increase
- (C) Decrease Increase No change
- (D) No change Increase Increase
- (E) No change No change Increase
The left ventricular function curve is from a young, healthy patient. If X represents the patient's myocardial function prior to anesthesia, the effect of 1 MAC of isoflurane at normocarbia is best represented by which of the following positions?
- (A) A
- (B) B
- (C) C
- (D) D
- (E) E
A 2-year-old child has cardiac arrest during an inguinal herniorrhaphy under general anesthesia administered during a Jackson-Rees system. The graph shows end-tidal PCO2 monitored from the tip of the endotracheal tube during cardiopulmonary resuscitation; minute ventilation is unchanged. Which of the following is the most likely cause of the change beginning at the arrow?
- (A) Decreased fresh gas flow
- (B) Inadequate chest compression
- (C) Increased dead space
- (D) Restoration of cardiac output
- (E) Sampling artifact
During acute normovolemic hemodilution in an adult, which of the following compensatory mechanisms is most important in maintaining tissue oxygenation?
- (A) Increased cardiac output
- (B) Increased oxygen extraction
- (C) Increased synthesis of erythropoietin
- (D) Redistribution of regional blood flow
- (E) Shift of the oxyhemoglobin dissociation curve
Which of the following is a potentially beneficial effect of ketamine used for induction of anesthesia?
- (A) Analgesia
- (B) Attenuation of respiratory response to carbon dioxide
- (C) Decreased cerebral metabolic rate
- (D) Increased stroke volume in patients with hemorrhagic shock
- (E) Preservation of laryngeal reflexes
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
Deliberate hypothermia and circulatory arrest is planned for clipping of a giant basilar artery aneurysm. Which of the following statements is true?
- (A) Administration of a muscle relaxant slows the cooling process
- (B) Anesthesia is not required if body temperature is below 31°C
- (C) Decreasing body temperature below the level at which the EEG is isoelectric further decreases cerebral metabolic rate for oxygen
- (D) Sinus bradycardia during cooling results from increased intracranial pressure
- (E) T-wave inversion during cooling indicates myocardial ischemia