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 How To Optimize Your Web Server
Video of me playing Hagood Hardy`s "The Homecoming" Notes on Respiratory System
Notes on Osteology of Pectoral Region What is Botulism?
Notes on Amino Acids, Proteins, Enzymes CHADS2 Score for Atrial Fibrillation Stroke Risk
Effects of Drugs on Fetal Development Usage of the D-xylose Absorption Test
Notes on Basic Gastrointestinal Physiology Why I Support Mercy Killing
Review of eBoundhost VPS hosting 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 Titanic Piano Theme: The Portrait
Notes on Respiratory System 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.