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Hydro Flask makes premium water bottles, and they are thinking of launching a new water bottle with a self-sealing straw. The technology is considered breakthrough but the contribution margin on the new bottle is lower than the original Hydro Flask water bottle and the company is concerned that the new bottle will steal customers and sales from its original product and result in a lower overall contribution margin percentage. This concern relates to what concept?

Serious complications of oral intubation include which of the following?1. Cardiac arrest2. Acute hypoxemia3. Bradycardia

Calculate the static compliance given the following clinical data: tidal volume 600 mL, peak inspiratory pressure (PIP) 40 cm H2O, plateau pressure (Pplateau) 30 cm H2O, positive end-expiratory pressure (PEEP) 15 cm H2O, and tubing compliance (CT) 2 mL/cm H2O.

A 68-year-old female admitted for congestive heart failure is in respiratory distress and is being seen by the hospital’s medical emergency team in her regular room. The patient is in obvious respiratory distress and is immediately placed on a nonrebreather mask. Physical assessment reveals: pulse 138 and thready; respiratory rate 28, shallow and labored; temperature 37° C; blood pressure 110/68. Breath sounds are bilaterally decreased with coarse crackles on inspiration. EKG shows normal sinus rhythm with widened cardiac output (QT) interval and an occasional irregular beat. No coughing is noted. The arterial blood gas on the nonrebreather mask is: pH 7.34; PCO2 46 mm Hg; partial pressure of oxygen in the arteries (PaO2) is 52 mm Hg; oxygen saturation is 86%; bicarbonate (HCO3-) is 24 mEq/L. The patient is diaphoretic. The most appropriate ventilator mode to manage this patient initially is which of the following?

The respiratory therapist observes the volume-time curve shown in the figure and tis not sure that patient is ventilating.    What action should the respiratory therapist take at this time?

In pressure targeted ventilation the trigger variable for a patient who is sedated and or paralyzed is which of the following?

A patient with acute respiratory distress syndrome (ARDS) has developed a pneumothorax from elevating peak and plateau pressures. The patient is currently being ventilated in the volume-controlled continuous mandatory ventilation (VC-CMV) mode with a set rate of 12 breaths/min. However, the patient is triggering the ventilator at a rate of 25 breaths/min. The arterial blood gas reveals ventilator-induced hyperventilation with corrected hypoxemia. The most appropriate recommendation to manage this patient on the ventilator is which of the following?

Soon after endotracheal tube extubation, an adult patient exhibits a moderate high-pitched inspiratory noise, heard without a stethoscope. Which of the following actions would you recommend?

Choose all of the appropriate responses about recruitment maneuvers        

After removal of an oral endotracheal tube, a patient exhibits hoarseness and stridor that does not resolve with racemic epinephrine treatments. What is most likely the problem?