Ventilation Dynamics PDF

#separator:tab #html:false What does RR mean Respiratory Rate What is another sign to show Respiratory Rate f What is VT Tidal volume, so the inspiratory put in for 1 breath What is VE A combination of Vt and RR What is TCT Total Cycle time Time allowed for inspiration and expiration What is Ti Insp...

#separator:tab #html:false What does RR mean Respiratory Rate What is another sign to show Respiratory Rate f What is VT Tidal volume, so the inspiratory put in for 1 breath What is VE A combination of Vt and RR What is TCT Total Cycle time Time allowed for inspiration and expiration What is Ti Inspiratory time We can control this rate What is Te Expiratory time We cannot control this time What is V Flow Inspiratory flow, compliance and resistance L/min or L/sec What is I:E The ratio between the inspiratory and expiratory time What is a good I:E We want it to be uneven, and bigger for the expiratory time 1:3 What is the ventilation dynamics equation (simple) Ve=(RR)(Vt) What is driving pressure Pressure Gradient that exists between two areas What is transairway pressure Pressure Gradient that exists between the mouth/pharynx and the alveoli How do you calculate Transairway Pressure Pta = Pm - Palv What is intrapulmonary Pressure (Palv) Aveolar pressure, pressure within the lungs. This is effected by compliance What is intrapleural Pressure Intrathoracic Pressure, pressure within the pleural space What is static conditions No flow, usually explained as the end expiratory What is transpulmonary pressure (Ptp) or TPP Distending pressure, pressure difference between the alveoli and the pleural space How do you calculate transpulmonary pressure Ptp= Palv - ppl What are obstructive lung disorders Reduced flow rates due to increase in airway resistance What are examples of obstructive lung disorders COPD and Asthma What are restrictive lung disorders reduced lung volumes due to a decrease in lung compliance What are examples of restrictive lung disorders Pulmonary Fibrosis What is normal RAW 0.6-2.4 cmH2O/L/sec (non-intubated) and 6cmH2O/L/sec (intubated) What are factors that effect RAW Diameter of tube and length of tube What are the units for resistance/RAW cmH2O/L/sec What are the units for compliance mL/cmH2O or L/cmH2O What is the complaince formula CL=V/P What is the RAW Formula Raw = change in pressure / flow What is dynamic compliance With Flow (PIP) What is static compliance Without flow (Pplat) What does decreased compliance mean for elastance Decreased compliance is increased elastance, the relationship is inverse What is a normal compliance 50-100 ml/cmH2O (intubated) and 100ml/cmH2O (non-intubated) For every cmH2O how much pressure needs to be applied in complaince 50 mL of pressure If you have 500mL of pressure, how much cmH2O do you need 10 cmH2O If flow increases, what happens to PIP and Plat Increase in PIP and the Plat stays the same If flow decreases, what happens to PIP and Plat Decrease in PIP and Plat stays the same If RAW increases, what happens to PIP and Plat PIP increases and Plat stays the same If RAW decreases, what happens to PIP and Plat PIP decreased, and Plat stays the same if CL increases, what happens to PIP and Plat PIP decreases, and so does Plat If Cl decreases, what happens to PIP and Plat PIP increases, and Plat increases If Vt is increases, what happens to PIP and Plat PIP and Plat increase