January 3rd 2024 X-Ray Rounds - Lecture Slides
Summary
Explore the mystery of why there's no gas in the pleural space in this fascinating on-demand teaching session tailored for medical professionals. Learn about the different pressures at play like the atmospheric and pleural space pressures, as well as the role played by gases like O2, H2O, N2, and CO2 in the human body. This course aims to clarify the reasons behind the absence of gas in the pleural space under normal physiological conditions and discuss the scenarios that would allow gas to penetrate this area. Dive deeper into this topic and come out with an understanding that may be very beneficial in managing conditions like pneumothorax. This still is surely a perfect addition to your medical knowledge arsenal.
Learning objectives
- Understand and explain why there is no gas in the pleural space under normal physiological conditions.
- Describe the relationship between atmospheric pressure, pleural space pressure and the pressure of different gases present in the human body.
- Identify the three ways in which gas could potentially enter the pleural space and cause medical issues.
- Explain and illustrate the concepts of pneumothorax, it's causes, and effects on the pleural space and the overall respiratory system.
- Demonstrate knowledge of the treatment methods for pneumothorax, including how to adjust pressure levels to remove gas from the pleural space.
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Computer generated transcript
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Why is there no gas in the pleural space? • Atmospheric pressure: 760 mmHg • Pleural Space Pressure: 757 mmHg • Gases in humans: • O2 = 40 mmHg • H2O = 47 mmHg • N2 = 573 mmHg • CO2 = 46 mmHg • TOTAL:706 mmHg– meaning, gases would moveintohere if thepleural pressureis less than 706 mmHg(which does notoccurphysiologically)Why is there no gas in the pleural space? • Three ways gas would be in pleural space: • Connectionbetweenpleural spaceand alveoli • Connectionbetweenatmosphereand pleural space • Gas forming organisms presentHowdo we TREA T pneumothorax? • Atmospheric pressure: 760 mmHg • Pleural Space Pressure: 757 mmHg • Gases in humans: • O2 = 40 mmHg • H2O = 47 mmHg • N2 = 573 mmHg • CO2 = 46 mmHg • pressureis less than 706 mmHg(which does notoccurphysiologically)Howdo we TREA T pneumothorax? • Atmospheric pressure: 760 mmHg • Pleural Space Pressure: 757 mmHg • Gases in humans: • O2 = 40 mmHg • H2O = 47 mmHg • N2 = 573 mmHg • CO2 = 46 mmHg • TOTAL:173 mmHg