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Title: Worsening lung compliance during pressure-controlled ventilation would cause which of the ... Post by: miguelb80 on Feb 25, 2018 Worsening lung compliance during pressure-controlled ventilation would cause which of the fol-lowing?
a. A decrease in peak pressure c. A decrease in vol-ume delivery b. An increase in peak pressure d. An increase in peak flow rate Q. 2 Improving lung compliance during volume-controlled ventilation would cause a(n) _____ in peak _____. a. decease; pressure c. decrease; flow rate b. increase; pressure d. increase; flow rate Q. 3 The figure shows the pressure-time scalar for a pressure-support breath. To alleviate the problem depicted in this figure, the respiratory therapist should do which of the following? a. Decrease the pres-sure setting c. Add inspiratory sloping b. Increase the inspir-atory time d. Decrease the set volume Q. 4 Improving lung compliance during pressure-controlled ventilation would cause which of the fol-lowing? a. A decrease in peak pressure c. An increase in volume delivery b. An increase in peak pressure d. A decrease in vol-ume delivery Q. 5 Worsening lung compliance during volume-controlled ventilation would cause which of the fol-lowing? a. A decrease in peak pressure c. A decrease in vol-ume delivery b. An increase in peak pressure d. An increase in peak flow rate Q. 6 The flow, volume, and pressure waveforms characteristic of volume breaths with a sine-like flow pattern are shown in which column of the figure? a. A c. C b. B d. D Title: Worsening lung compliance during pressure-controlled ventilation would cause which of the ... Post by: Lewibr02 on Feb 25, 2018 During pressure-controlled ventilation, the delivery of the volume varies according to the charac-teristics of the lungs. Worsening lung compliance is indicative of stiffening lungs. This would cause less volume to be delivered with the same set pressure. During volume-controlled ventilation, the peak inspiratory pressure generated by the delivery of the volume varies according to the characteristics of the lungs. Improving compliance makes it easier to deliver a volume, decreasing the pressure generated in the lungs. The scalar shows a pressure overshoot owing to the rapid flow rate at the very beginning of in-spiration. Adjusting the slope of the pressure and flow curves can change the rate of gas delivery at the very beginning of inspiration. This tapers the curves slightly until they reach their maximum value. Decreasing the pressure setting may alleviate the overshooting problem, but it does not provide the same level of assistance to the patient. Inspiratory time and volume are controlled by the patient in pressure-support ventilation and cannot be adjusted. During pressure-controlled ventilation, the delivery of the volume varies according to the charac-teristics of the lungs. Improving compliance makes it easier to deliver a volume with the same set pressure. During volume-controlled ventilation, the peak inspiratory pressure generated by the delivery of the volume varies according to the characteristics of the lungs. Worsening lung compliance is in-dicative of stiffening lungs. This would cause more pressure to be generated during the delivery of a set volume. The sine-like flow waveform begins at zero and reaches the maximum inspiratory flow in the middle of inspiration. It then tapers down to zero. |