Lecture 25 respiration 2
Download
1 / 23

Lecture 25 - PowerPoint PPT Presentation


  • 301 Views
  • Uploaded on

Lecture 25 Respiration #2. Diseases detected by PV curves. Air flow transducer - Pneumotachometer. Nitrogen washout. Air flow transducer. Full body plethysmograph. Measurement of airway resistance. Dubois shutter method

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Lecture 25' - DoraAna


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Lecture 25 respiration 2 l.jpg

Lecture 25Respiration #2







Measurement of airway resistance l.jpg
Measurement of airway resistance

  • Dubois shutter method

  • Measurement of pressure in full body plethysmograph using calibration Pump

  • PV=NRT = gas law



Dynamic compliance l.jpg
Dynamic compliance

C = Volume/Pressure

Volume = integrate flow

Press = difference at flow=0










Pressure units l.jpg
Pressure units

  • Atmospheric pressure ~14.7 pounds/sq inch

  • Daily barometric pressure - 30 cm Hg or 762 mmHg

  • Or 10.3 meters water or 33 ft


Pressure calculations l.jpg
Pressure calculations

  • Today’s barometric pressure = 30.03 cm Hg

  • Or 760 mmHg

  • % Oxygen = 20.94%

  • Partial pressure of oxygen ~160 mmHg

  • Pressure of oxygen in hemoglobin = 100

  • Venous oxygen pressure = 40


Hemoglobin dissociation curve l.jpg
Hemoglobin dissociation curve

Effect pf Ph (Push to Right)

Effect of sickle cell (push to left)

Carbon monoxide

Temperature (push to right)

Organic Phosphates (push to right)



Other pressure effects l.jpg
Other pressure effects

  • High altitude

  • Mount Kilimanjaro

  • Mount Everest

  • Blood Oxygen saturation – ear clip

  • Measurement of PO2

  • Carbon dioxide in brain – hyper ventilation

  • Sleep patterns

  • Artificial lungs


Ventilators l.jpg
Ventilators

  • Design

  • Purpose

  • How it feels

  • High frequency type

  • Neonatal nursery

  • Danger of pure oxygen


ad