10B.05 · Contrôle ventilatoire

Ventilatory control

Système respiratoire · 54 pages

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Ventilatory Control

1Ventilatory Control 2Learning Objectives 3Oxygen Transport Reminder 4Breathing Adaptation Scenarios 5Respiration: Automatic Rhythmic Activity 6Respiratory Control Overview 7Control Loop: Controller–Sensors–Effectors

Central Controller

8Brainstem Centers Anatomy 9Brainstem Centers & Pre-Bötzinger Complex 10Brainstem, Cortex & Limbic Inputs 11Medullary, Pneumotaxic & Apneustic Centers

13Control Loop: Transition to Effectors

14Dilator vs Pump Muscles 15Respiratory Muscle Groups 16Cervical Lesion Example 17Diaphragm & Phrenic Nerve Pathway 18Inspiration & Expiration Coordination 19Diaphragm Movement Symmetry

20Control Loop: Transition to Sensors

21Sensor Categories Overview 22Sensor Locations Table 23Central Chemoreceptors: H⁺ & CSF pH 24Central Chemoreceptors: Blood-Brain Barrier 25Central Chemoreceptors: Metabolic Acid-Base 26Peripheral Chemoreceptors: Carotid & Aortic Bodies 27Peripheral Chemoreceptors: Hypoxic Drive 28Carotid Body Structure: Glomus Cells 29Carotid Body: Hyperbolic O₂ Response 30Pulmonary Receptors Overview 31Hering-Breuer Reflex 32Pulmonary Receptors Summary 33Other Receptors: Airway, Joint, Baro, Pain

Ventilatory Response to CO₂

34CO₂ as Primary Ventilatory Driver 35CO₂ Chemosensitivity: Linear Response 36CO₂ Response Potentiated by Hypoxia 37CO₂ Response in Severe Hypoxia 38CO₂ Response Mechanism Recap

Ventilatory Response to O₂

39O₂ Response: Peripheral Chemoreceptors Only 40O₂ Chemosensitivity: Hyperbolic Response 41O₂ Response Potentiated by Hypercapnia 42Chronic CO₂ Retention & Hypoxic Drive

43Ventilatory Response to pH 44Summary: CO₂, pH & O₂ Integration 45Summary: Complete Control Loop Diagram

Clinical Examples

46Example 1: Low Inspired O₂ (Intro)47Example 1: Low Inspired O₂ Pathway 48Example 2: Elevated Inspired CO₂ (Intro)49Example 2: Rebreathing & COPD 50Example 2: CO₂ Response Pathway 51Example 3: Acute Metabolic Acidosis (Intro)52Example 3: Compensatory Hyperventilation

53Key Messages 54References

10B.05Page 1Ventilatory Control

Contrôle ventilatoire page 1

10B.05Page 2Ventilatory ControlLearning Objectives

Contrôle ventilatoire page 2

10B.05Page 3Ventilatory ControlOxygen Transport Reminder

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10B.05Page 4Ventilatory ControlBreathing Adaptation Scenarios

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10B.05Page 5Ventilatory ControlRespiration: Automatic Rhythmic Activity

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10B.05Page 6Ventilatory ControlRespiratory Control Overview

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10B.05Page 7Ventilatory ControlControl Loop: Controller–Sensors–Effectors

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10B.05Page 8Ventilatory ControlCentral ControllerBrainstem Centers Anatomy

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10B.05Page 9Ventilatory ControlCentral ControllerBrainstem Centers & Pre-Bötzinger Complex

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10B.05Page 10Ventilatory ControlCentral ControllerBrainstem, Cortex & Limbic Inputs

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10B.05Page 11Ventilatory ControlCentral ControllerMedullary, Pneumotaxic & Apneustic Centers

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10B.05Page 12Ventilatory ControlCentral ControllerMedullary, Pneumotaxic & Apneustic Centers

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10B.05Page 13Ventilatory ControlControl Loop: Transition to Effectors

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10B.05Page 14Ventilatory ControlEffectorsDilator vs Pump Muscles

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10B.05Page 15Ventilatory ControlEffectorsRespiratory Muscle Groups

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10B.05Page 16Ventilatory ControlEffectorsCervical Lesion Example

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10B.05Page 17Ventilatory ControlEffectorsDiaphragm & Phrenic Nerve Pathway

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10B.05Page 18Ventilatory ControlEffectorsInspiration & Expiration Coordination

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10B.05Page 19Ventilatory ControlEffectorsDiaphragm Movement Symmetry

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10B.05Page 20Ventilatory ControlControl Loop: Transition to Sensors

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10B.05Page 21Ventilatory ControlSensorsSensor Categories Overview

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10B.05Page 22Ventilatory ControlSensorsSensor Locations Table

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10B.05Page 23Ventilatory ControlSensorsCentral Chemoreceptors: H⁺ & CSF pH

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10B.05Page 24Ventilatory ControlSensorsCentral Chemoreceptors: Blood-Brain Barrier

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10B.05Page 25Ventilatory ControlSensorsCentral Chemoreceptors: Metabolic Acid-Base

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10B.05Page 26Ventilatory ControlSensorsPeripheral Chemoreceptors: Carotid & Aortic Bodies

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10B.05Page 27Ventilatory ControlSensorsPeripheral Chemoreceptors: Hypoxic Drive

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10B.05Page 28Ventilatory ControlSensorsCarotid Body Structure: Glomus Cells

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10B.05Page 29Ventilatory ControlSensorsCarotid Body: Hyperbolic O₂ Response

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10B.05Page 30Ventilatory ControlSensorsPulmonary Receptors Overview

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10B.05Page 31Ventilatory ControlSensorsHering-Breuer Reflex

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10B.05Page 32Ventilatory ControlSensorsPulmonary Receptors Summary

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10B.05Page 33Ventilatory ControlSensorsOther Receptors: Airway, Joint, Baro, Pain

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10B.05Page 34Ventilatory ControlVentilatory Response to CO₂CO₂ as Primary Ventilatory Driver

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10B.05Page 35Ventilatory ControlVentilatory Response to CO₂CO₂ Chemosensitivity: Linear Response

Contrôle ventilatoire page 35

10B.05Page 36Ventilatory ControlVentilatory Response to CO₂CO₂ Response Potentiated by Hypoxia

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10B.05Page 37Ventilatory ControlVentilatory Response to CO₂CO₂ Response in Severe Hypoxia

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10B.05Page 38Ventilatory ControlVentilatory Response to CO₂CO₂ Response Mechanism Recap

Contrôle ventilatoire page 38

10B.05Page 39Ventilatory ControlVentilatory Response to O₂O₂ Response: Peripheral Chemoreceptors Only

Contrôle ventilatoire page 39

10B.05Page 40Ventilatory ControlVentilatory Response to O₂O₂ Chemosensitivity: Hyperbolic Response

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10B.05Page 41Ventilatory ControlVentilatory Response to O₂O₂ Response Potentiated by Hypercapnia

Contrôle ventilatoire page 41

10B.05Page 42Ventilatory ControlVentilatory Response to O₂Chronic CO₂ Retention & Hypoxic Drive

Contrôle ventilatoire page 42

10B.05Page 43Ventilatory ControlVentilatory Response to pH

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10B.05Page 44Ventilatory ControlSummary: CO₂, pH & O₂ Integration

Contrôle ventilatoire page 44

10B.05Page 45Ventilatory ControlSummary: Complete Control Loop Diagram

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10B.05Page 46Ventilatory ControlClinical ExamplesExample 1: Low Inspired O₂ (Intro)

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10B.05Page 47Ventilatory ControlClinical ExamplesExample 1: Low Inspired O₂ Pathway

Contrôle ventilatoire page 47

10B.05Page 48Ventilatory ControlClinical ExamplesExample 2: Elevated Inspired CO₂ (Intro)

Contrôle ventilatoire page 48

10B.05Page 49Ventilatory ControlClinical ExamplesExample 2: Rebreathing & COPD

Contrôle ventilatoire page 49

10B.05Page 50Ventilatory ControlClinical ExamplesExample 2: CO₂ Response Pathway

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10B.05Page 51Ventilatory ControlClinical ExamplesExample 3: Acute Metabolic Acidosis (Intro)

Contrôle ventilatoire page 51

10B.05Page 52Ventilatory ControlClinical ExamplesExample 3: Compensatory Hyperventilation

Contrôle ventilatoire page 52

10B.05Page 53Ventilatory ControlKey Messages

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10B.05Page 54Ventilatory ControlReferences

Contrôle ventilatoire page 54