C8.i · IPPV & PEEP

This viva will examine respiratory physiology. Discuss how Positive End Expiratory Pressure (PEEP) may affect lung compliance in an intubated and ventilated patient? You may use the graph to help with your answer. (Hysteresis Graph removed from report)

This viva will examine cardiorespiratory physiology and pharmacology. Describe the cardiovascular effects of positive end expiratory pressure (PEEP). (Image removed from report.)

This viva will examine some physiological causes of polyuria. A patient has been weaned from several days of positive pressure ventilation and extubated. Over the next 5 hours she becomes polyuric. Explain the physiological reasons for this.

This station will explore cardiovascular physiology, positive pressure ventilation and aspects of measurement. This is a trace of the arterial blood pressure in a mechanically ventilated patient. It is well known that variations in blood pressure can occur with respiration. Outline the physiology that explains why these blood pressure changes occur? Candidates were asked to explain the physiological principles that contribute to these blood pressure changes, in addition to the cardiovascular consequences of positive pressure ventilation, regulation of myocardial contractility and a series of questions relating to invasive pressure monitoring. These included being asked to describe a transducer, accuracy and calibration