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Respiratory Mechanics In Mechanical Ventilation

Respiratory Mechanics In Mechanical Ventilation

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 Page 1


Respiratorymechanicsin Respiratory mechanics in 
mechanical ventilation
ArjunSrinivasan
Page 2


Respiratorymechanicsin Respiratory mechanics in 
mechanical ventilation
ArjunSrinivasan
• Introduction
• Mechanicsduringventilation Mechanics during ventilation
• PV curves
• Application in health & disease
• Difficulties&pitfalls Difficulties & pitfalls
• The future….
Page 3


Respiratorymechanicsin Respiratory mechanics in 
mechanical ventilation
ArjunSrinivasan
• Introduction
• Mechanicsduringventilation Mechanics during ventilation
• PV curves
• Application in health & disease
• Difficulties&pitfalls Difficulties & pitfalls
• The future….
MonitoringMechanics Monitoring Mechanics 
P fl d l • Pressure, flow, and volume 
• Time-based graphics (waveforms)
P – Pressure
– Flow
– Volume Volume
• Derived measures
– Compliance p
– Resistance
• Loops
– Pressure volume 
– Flow volume
Page 4


Respiratorymechanicsin Respiratory mechanics in 
mechanical ventilation
ArjunSrinivasan
• Introduction
• Mechanicsduringventilation Mechanics during ventilation
• PV curves
• Application in health & disease
• Difficulties&pitfalls Difficulties & pitfalls
• The future….
MonitoringMechanics Monitoring Mechanics 
P fl d l • Pressure, flow, and volume 
• Time-based graphics (waveforms)
P – Pressure
– Flow
– Volume Volume
• Derived measures
– Compliance p
– Resistance
• Loops
– Pressure volume 
– Flow volume
Pressures Pressures 
• Peak inspiratorypressure (PIP)
– Pressure generated to drive gas into the lungs to 
overcome resistance & elastic  property of RS
– Dependant on flow, resistance, TV, compliance & PEEP
– Slope of the curve depends on flow pattern
• Plateaupressure(P ) • Plateau pressure( P
plat
)
– Measured after E
ins
pause of ~2 secs
R ll – Represents alveolar pressure
– True inflation pressure
Page 5


Respiratorymechanicsin Respiratory mechanics in 
mechanical ventilation
ArjunSrinivasan
• Introduction
• Mechanicsduringventilation Mechanics during ventilation
• PV curves
• Application in health & disease
• Difficulties&pitfalls Difficulties & pitfalls
• The future….
MonitoringMechanics Monitoring Mechanics 
P fl d l • Pressure, flow, and volume 
• Time-based graphics (waveforms)
P – Pressure
– Flow
– Volume Volume
• Derived measures
– Compliance p
– Resistance
• Loops
– Pressure volume 
– Flow volume
Pressures Pressures 
• Peak inspiratorypressure (PIP)
– Pressure generated to drive gas into the lungs to 
overcome resistance & elastic  property of RS
– Dependant on flow, resistance, TV, compliance & PEEP
– Slope of the curve depends on flow pattern
• Plateaupressure(P ) • Plateau pressure( P
plat
)
– Measured after E
ins
pause of ~2 secs
R ll – Represents alveolar pressure
– True inflation pressure
PEEP PEEP
i
P f ii P E i h b fPEEP • Presence of positive P
aw 
at E
exp
in the absence of PEEP
E
• Measured by application of E
exp
pause
• Etiology
– Dynamic hyperinflation with airflow obstruction
– Dynamic hyperinflation without airflow obstruction
– Without either
Ld • Leads to 
– Hyperinflation-volutrauma
D ti iti it fti – Decreases trigger sensitivity-fatigue
– Hemodynamic compromise
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About this Document

Document Description: Respiratory Mechanics In Mechanical Ventilation for 2023 is part of for preparation. The notes and questions for Respiratory Mechanics In Mechanical Ventilation have been prepared according to the exam syllabus. Information about Respiratory Mechanics In Mechanical Ventilation covers topics like and Respiratory Mechanics In Mechanical Ventilation Example, for 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Respiratory Mechanics In Mechanical Ventilation.

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Respiratory Mechanics In Mechanical Ventilation is the part of for 2023 exam preparation. The content of Respiratory Mechanics In Mechanical Ventilation has been prepared for learning according to the exam syllabus. Respiratory Mechanics In Mechanical Ventilation covers topics like for 2023 Exam. Find important questions, notes, tests & features of Respiratory Mechanics In Mechanical Ventilation in this document.
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