Notes on Alveolar-Blood Gas Exchange

  >   Rahul's Noteblog   >   Notes on Pulmonology   >   Notes on Alveolar-Blood Gas Exchange

Factors Affecting PCO2:

• Alveolar ventilation: Inverse relation.

• Hyperventilation: Inverse relation.

• Hypoventilation: Direct relation.

• Metabolic rate: Direct relationship.

Factors Affecting Alveolar PO2:

• Atmospheric pressure: Direct relationship.

• Fractional concentration of oxygen: Direct relationship.

• Alveolar pressure of CO2: Inverse relationship.

Fick Law of Diffusion:

• Simple diffusion = gas exchange between alveolar and pulmonary capillary blood.

• Factors affecting rate of diffusion also affect rate of CO2 and O2 exchange.

Rate of Diffusion Affected By:

• Surface area and thickness of membranes.

• Main factor affecting solubility is the diffusion constant of a gas.

Blood Gas Diffusion Diagram:

Blood Gas Diffusion

NOTE: if A-a gradient is less then 10 mm Hg, it is due to hypoventilation.

Additional Reading:

Basic Pulmonology

1. Lung Mechanics
2. Alveolar-Blood Gas Exchange
3. Gas Transport and Regulation of Respiration
4. Four Causes of Hypoxemia
5. Control of Respiration
6. Systemic vs Pulmonary Circulation FAQ
7. Principles of Gas Exchange in Lungs
8. Hypoxia, Hypoxemia & Hemoglobin-Oxygen Saturation Curve
9. FAQ on Mechanics of Breathing
10. FAQ on Control of Breathing
11. Criteria for Transudate Pleural Effusion
12. Light's Criteria for Exudate Pleural Effusion
13. Notes on Lung Sounds
14. Patient with Acute Respiratory Distress Syndrome (ARDS)
15. Management of Acute Deep Venous Thrombosis
16. Notes on Asthma Treatment

Pulmonology Videos

1. Video of Pulmonology Examination in a Clinical Setting

Related Topics

1. Histology of the Respiratory System
2. Upper and Lower Respiratory Disorders
3. Pulmonary Examination for Internal Medicine

Medical Images

Useful Medical Images & Diagrams (link opens in a new window)

Random Pages:

Life in a Drop of Water Review of Delta Roma Imperiale Fountain Pen
Video of me playing Ludwig van Beethoven - "Moonlight Sonata" (1st Movement) Notes on Nervous Tissue
Notes on Back and Nervous System Notes on Enterococcus
Notes on Gluconeogenesis Notes on Descriptive Statistics
Differentiation and Anatomy of a Blastocyst Notes on Functions of the Liver
Notes on Basic Gastrointestinal Physiology My Experience during the Iraqi Invasion of Kuwait
Review of Delta Roma Imperiale Fountain Pen What is an ELEK`s Test?
Why did I decide to become a doctor? Medical School Admissions Essay Video: Titanic Piano Theme: The Portrait
Corporate Failure: The Enron Case My Experience during the Iraqi Invasion of Kuwait
USMLE Blood Lab Values Regulation of Heart Rate by Autonomic Nervous System
Images of Antibodies Video of me playing Unknown Easy Blues Piano
Notes on Muscle Tissue Differentiation and Anatomy of a Blastocyst
Notes on Cell Components Notes on Nervous Tissue
Voices from Hell: My Experience in Mussoorie, India Video of Cardiology Examination in a Clinical Setting

Please Do Not Reproduce This Page

This page is written by Rahul Gladwin. Please do not duplicate the contents of this page in whole or part, in any form, without prior written permission.