LINDSEY JONES TMC 140 ATTEMPT 1

A patient is unresponsive after a motor vehicle accident. The patient has suffered a broken arm and two broken legs. Paradoxical chest movement is noted on the left. The patient appears dusky in color. The respiratory therapist should suspect which of the following? A. internal hemorrhaging B. peripheral vasoconstriction C. pulmonary embolism D. cardiogenic shock - Answer- A. Internal Hemorrhaging Based on the patient's situation, the most likely circumstance is internal injuries. A dusky skin color is associated with anemia and would suggest internal bleeding or hemorrhaging. A patient receiving pressure control ventilation (PCV) shows signs of hypercapnia. Which of the following changes is most appropriate? A. increase peak inspiratory pressure B. decrease inspiratory flow rate C. increase set tidal volume D. decrease inspiratory time - Answer- A. Increase peak inspiratory pressure When a patient is receiving mechanical ventilatory support in pressure control mode the traditional ways of blowing off CO2 is different than a volume ventilator. Either inspiratory time can be increased or peak inspiratory pressure can be increased. A decreasing CvO2 while CaO2 remains constant is most closely associated with A. decreasing SVR B. decreasing cardiac output C. decreasing tissue oxygen consumption D. increasing PVR - Answer- B. decreasing cardiac output If CvO2 is decreasing while CaO2 remains the same, there is a widening between the arterial and venous oxygen content difference C(a-v)O2. A bigger gap between these numbers, or an increase in the C(a-v)O2, is associated with decreasing tissue oxygen consumption which is also associated with a decrease in cardiac output. A patient's chest radiograph indicates scattered patchy infiltrates. The following parameters are observed while the patient receives VC A/C ventilation: Height 168 cm (5 ft 6 in) Temperature 38.1 deg C (100.5 deg F) Pressure (peak) 52 cmH2O Pressure (plat) 38 cm H2O VT (