Given the following data, calculate a patient's tissue O2 delivery. SaO2: 95 PaO2 90 mm Hg Hb: 14 g C.O.: 4.5 liters/minute
A. 530 ml O2/minute
B. 580 ml O2/minute
C. 701 ml O2/minute
D. 810 ml O2/minute
Q. 2 In which of the following conditions does the arterial-mixed venous O2 content difference (aO2 difference) become misleading when it is used to assess tissue O2 extraction?
A. cardiogenic shock
B. septic shock
C. neurogenic shock
D. anaphylactic shock
Q. 3 Which of the following classifications refers to spontaneous breaths during airway pressure release ventilation?
A. flow or pressure triggered; pressure or flow cycled
B. pressure triggered; pressure targeted; flow cycled
C. flow triggered; volume targeted; pressure cycled
D. pressure triggered; pressure targeted; pressure cycled
Q. 4 The therapist seeks to increase the mean airway pressure of a patient who is receiving VC-CMV. Which of the following ventilatory maneuvers or adjustments does the therapist need to perform to accomplish this goal?
A. Implement an inspiratory pause.
B. Perform an expiratory pause.
C. Reduce auto-PEEP.
D. Institute pressure support ventilation.
Q. 5 The therapist desires to mechanically ventilate a patient with a mode that provides an increased I:E ratio, encourages spontaneous breathing, and lowers pressure fluctuations as tidal volume is delivered. Which of the following modes would be appropriate?
A. pressure-regulated volume control ventilation
B. inverse ratio ventilation
C. airway pressure release ventilation
D. synchronized intermittent mandatory ventilation
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