1. An adult patient has a systolic blood pressure of 60 mm Hg. An ABG analysis is requested. Which of the following art

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1. An adult patient has a systolic blood
pressure of 60 mm Hg. An ABG analysis is requested. Which of the
following arterial sites are recommended?
A. radial
B. carotid
C. femoral
D. dorsalis pedis
2. A patient receiving mechanical ventilation has absent
breath sounds over the right lung field with hyperresonant
percussion tones. The peak airway pressure is significantly higher
than previously noted, and the patient's hemodynamic status is
unstable. Which of the following is indicated?
A. Obtain a chest radiograph
B. Perform needle decompression
C. Obtain an ARG sample
D. Decrease PEEP
3. A calibrated 3-liter syringe is the device most
commonly used to verify the accuracy of a
A. Peak flowmeter
B. Spirometer
C. body plethysmograph
D. pressure transducer
4. A 65-year-old, 68-kg (150-Ib) patient is
receiving PS ventilation, The following data are
available
FiO2. 0.40
HR. 84/min
RR. 12/min
BP. 140/90 mm hg
Vt 450 mL
PEEP. 5 cm H2O
PS. 20 cm H2O
pH. 7.38
PaCO2 42 mm Ho
PaO2 88 mm Ho
HCO3 25 mEg1
BE. 0 mEgL
Sa0, (caic). 97%
A respiratory therapist decreases the PS to 10 cm H/O. The
respiratory rate increases to 20/min, and the VT decreases to 400,
Vital signs are unchanged. The therapist should recommend
A. increasing PS to 20 cm H/O
B. increasing PEEP to 10 cm H,0
C. maintaining the current ventilator settings
D. instituting SIMV.