Exam 43: Physiology of Ventilatory Support

Which of the following parameters are set when volume-supported ventilation (VSV) is used? I.tidal volume II.maximum peak pressure III.positive end-expiratory pressure (PEEP)IV.flow

Positive-pressure ventilation (PPV) can reduce urinary output by how much?

Which of the following is the recommended tidal volume for mechanical ventilation in acute respiratory failure?

On what does volume delivered depend during pressure-targeted modes of ventilatory support? I.set pressure limit II.patient lung mechanics III.patient effort

After accounting for the compressed volume loss on a stable adult patient receiving volume-controlled continuous mandatory ventilation at a preset volume of 700 ml, you still note a 150-ml difference between the expected and the actual delivered volume. Which of the following is most likely causing this problem?

What is traumatic injury to lung tissue caused by excessive pressure called?

During volume-assured pressure-supported ventilation, if the desired V_T is not reached or exceeded at the preset pressure support level, what happens?

Which of the following variables determine the level of support achieved with proportional assist ventilation? I.patient effort II.elastance III.resistance

Which of the following modes of support provides all of the patient's minute ventilation (V_E) as mandatory volume-controlled (VC) breaths?

Assuming a constant rate of breathing, which of the following inspiratory/expiratory ratios (I:E) would tend to most greatly impair a patient's systemic diastolic pressure?