Following insertion of a CVP catheter, a chest radiograph is taken to evaluate the position of the catheter.  When viewing the radiograph, a respiratory therapist notes the tip of the catheter is in the superior vena cava.  The therapist should conclude the catheter

A 34-week gestational age infant has been stable while receiving mechanical ventilation.  Oxygen saturation decreases to 85% and does not respond to an increased FIO2. Transillumination of the chest produces a 1-cm halo that extends around the point of contact with the skin.  Which of the following should a respiratory therapist recommend?

A 77-year-old male patient is scheduled to undergo open heart surgery.  Preoperative spirometry results show the patient’s FEV1 is 80% of predicted and the FEV1/FVC is 83%, indicating

A patient has a reported SaO2 of 90%, hemoglobin 15, PaO2 of 61 mmHg, cardiac output of 6 L/min, and CvO2 of 14.2 vol%. What would the C(a-v)O2 equal?

What effect would an upper airway obstruction have on ventilation and perfusion?

An adult patient has a pulse of 142, a respiratory rate of 24, and a blood pressure of 78/55 mm Hg.  When examining the patient’s chest, a respiratory therapist notes an absence of breath sounds in the left chest with a hyperresonant percussion note.  Which of the following should the therapist recommend FIRST?

What changes would be expected with ventilation and perfusion in a patient with excessive blood loss?

Hypotension is sensed by baroreceptors, what response will this have on blood vessels and why?

Normal physiologic shunts return deoxygenated blood to the left atrium.  Which of the following contribute to normal physiologic shunts?

What is derived from the following formula?       (Hgb x 1.34 x SvO2) + (PvO2 x 0.003)