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Car/Pul Final Exam

SPC Cardiopulmonary Physiology Final Exam Unit 2 Review

QuestionAnswer
List the 4 accessory muscle of Inspiration? 1. Scalenes 2. Sternocleidomastoid 3. Pectoralis Major 4. Trapezius
Compliance is best described as what? Distensibility
Formula for Compliance? Volume Change/ Unit Pressure Change
What is normal Lung Compliance? 0.2L/cmH2O
What is normal Thoracic Compliance? 0.2L/cmH2O
What is normal Total Lung Compliance? 0.1L/cmH2O
Formula for Total Lung Compliance? 1/CL + 1/CT = 1/CLT
Low lung compliance indicate what? 1. Pneumonia 2. Pulmonary Edema
Low thoracic compliance indicate what? 1. Kyphoscoliosis 2. Ascites 3. Gross Obesity
Elastance is best described as what? Elastic Recoil
Formula for Elastance? Pressure Change/Unit Volume Change
What is normal Elastance? 5cmH2O/L
Low elastance indicates what? Emphysema
What are the diseases associated with the P/V Horizontal Curve? (Low Lung Compliance) 1. Pneumonia 2. Pulmonary Edema 3. Pulmonary Fibrosis 4. Atelecasis
What are the diseases associated with the P/V Vertical Curve? (High Compliance, Low Elastance) 1. Emphysema
What is airway resistance? Frictional resistance afforded by the airways
Formula for Airway Resistance? Pressure Change/Flow Rate
What is normal Airway Resistance? 1-2cmH2O/L/sec
High airway resistance indicates what? 1. Asthma 2. Chronic Bronchitis
Conductance is best describes as what? Ease of Flow
Formula for Conductance? Flow/Unit Pressure
What is normal for Conductance? 0.5-1.5L/sec/cmH2O
Low conductance indicates what? 1. Asthma 2. Chronic Bronchitis
What 5 factors contribute and affect airway resistance? 1. Bronchospasm 2. Secretions 3. Mucosal Edema 4. Low Elastance 5. Artificial Airways
Formula for Reynolds Number? 2rvd/n
R in Reynolds # means? Radius
V in Reynolds # means? Velocity
D in Reynolds # means? Density
N in Reynolds # means? Viscosity
Poiseuille's Law addresses what type of flow? Laminar Flow
Formula for Poiseuille's Law? Pr^4=Flow
Reynolds # addresses what type of flow? Turbulent Flow
What's key about Reynolds #? A # of >2000 establishes turbulent flow
What's key about Poiseuille's Law? 16 fold jump in P as r decreases 50%
T/F Low density gas like Helium will decrease turbulence and WOB? True
Define Time Constants? The time (in sec.) to inflate a lung region to about 60% of its potential filling capacity.
Normal Time Constant? .2x1=.2 sec.
Long Time Constant? .2 x 10 = 2.0 sec.
Short Time Constant? .05 x 2 = .1 sec.
Created by: Langhout1418
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