Which of the following statements best describes an atrioventricular pacemaker?

You have performed an ECG on a 34-year-old woman who appears to be in good general health. A portion of the ECG tracing is shown here. Which type of heart block does this patient have?Click here to enlarge (opens in a new tab).

What would be the consequence if pleural pressure (Ppl) exceeds alveolar pressure (Palv)? 

Which ventilator setting adjustment would increase mean airway pressure (Pmean)? 

How would time constants be affected in a person with chronic obstructive pulmonary disease with increased airways resistance?

In what mode of ventilation are all the breaths cycled by flow?   

Regarding humidification in mechanical ventilation, for which patient population would a heat moisture exchanger (HME) probably be contraindicated? 

Which type of humidification should the respiratory therapist select for a patient with severe injuries from a car accident who is expected to require mechanical ventilation for a prolonged period? 

What happens to the isothermic saturation boundary (ISB) when a patient is intubated? 

Which flow  pattern delivers flow at the same speed throughout inspiration?                 1                                  2                                 3                                     4