5. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Response to PEEP Recruitment Potential Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
7. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Response to PEEP Recruitment Potential Low Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
9. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Excellent (10-20 cm) Response to PEEP High Recruitment Potential Low Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
11. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 <10 cm often absent >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Excellent (10-20cm) Response to PEEP High Recruitment Potential Low Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
13. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 <10 cm often absent >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Excellent (10-20cm) Response to PEEP High Recruitment Potential High Low Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
70. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 <10 cm often absent >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Excellent (10-20cm) Response to PEEP Low High Recruitment Potential High Low Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
72. Contrasts between 2 types of ARDS Kallet, R & Branson, R. Resp. Care Journal, Apr 2007, Vol 52 No 4 <10 cm often absent >10 usually present Lower inflec. Pt Severely Reduced Reduced Lung Compl. Good (8-12cm) Excellent (10-20cm) Response to PEEP Low High Recruitment Potential High Low Risk of overdistention Normal Reduced Chest Wall Compliance Pulmonary ARDS Extrapulmonary ARDS Mechanics
75. Tschumperlin, D et al. Am J Respir Crit Care Med, Vol 162. pp 357-362, 2000
76. Tschumperlin, D et al. Am J Respir Crit Care Med, Vol 162. pp 357-362, 2000 Both static and single deformations were significantly less injurious than cyclic deformations at each deformation level
77. Tschumperlin, D et al. Am J Respir Crit Care Med, Vol 162. pp 357-362, 2000 Reducing the amplitude reduced cell death Cell Death dependent on frequency
112. I-times in Pressure Modes for Full Flow deceleration improve gas distribution and minimize PC level F T P T MAP MAP Vt Vt
113. I-times in Pressure Modes for Full Flow deceleration improve gas distribution and minimize PC level F T P T MAP Vt Vt
114. I-times in Pressure Modes for Full Flow deceleration improve gas distribution and minimize PC level F T P T MAP Vt Min.Insp. Pressure Adjustments Needed Vt Vt
115.
116. Normal Ventilation with Normal MAP P Time PEEP PEEP Plat Peak Insp Mean Insp Pressure Mean Exp Pressure + = MAP 5 20 15
117. Increase in Insp. Pressure What will happen to MAP? P Time PEEP PEEP Plat Peak Insp Mean Insp Pressure Mean Exp Pressure + = MAP 5 20 15 25
118. Increase in Insp. Pressure What will happen to Plat ? P Time PEEP PEEP Plat Peak Insp Mean Insp Pressure Mean Exp Pressure + = MAP 5 20 15 25
119. Increase in PEEP, What will happen to MAP & Plat? P Time PEEP PEEP Plat Peak Insp Mean Insp Pressure Mean Exp Pressure + = MAP 5 20 15 10
120. APRV (Basically inverse Ratio with Spont. Breathing during insp. Phase.) Can Increase MAP and keep safe Plat. & spont. Breath. P Time PEEP PEEP Plat Peak Insp Mean Insp Pressure Mean Exp Pressure + = MAP 5 20 15 = If Flow is Fully dec. Spontaneous Breaths