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Introduction to ECG Reading & Hemorrhage Diagram Practice

Join us for a practice session on reading ECGs and creating hemorrhage diagrams. Learn about atrial fibrillation, ventricular fibrillation, and the feedback loop of EPO. Get tips for creating your own hemorrhage diagram. Test on cardiovascular and respiratory systems on Dec 3.

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Introduction to ECG Reading & Hemorrhage Diagram Practice

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  1. 1QQ #27 on ECG Lab • Reading ECGs • Practice for hemorrhage diagram flow charting

  2. Atrial fibrillation Ventricular fibrillation

  3. Board Diagram ofEPO Feedback Loopand Autotransfusion Tips for creating your Hemorrhage Diagram 1st 15 minutes of class on Friday, November 30th Test 3 on Monday, Dec 3 covers Cardiovascular and Respiratory

  4. O2 CO2 • Respiration is the overall movement of gases between the outside environment and the internal cells. • Ventilation is the movement of air in and out of the lungs. • Ventilation should be matched to metabolism. CO2 O2 pH changes with Hypoventilation & Hyperventilation

  5. Carbon Dioxide reacts with water! CO2 + H20 ↔ H2CO3 ↔ H+ + HCO3- Carbonic Acid Bicarbonate So disturbances in gas exchange or ventilation are often associated with disruptions of pH. pH changes with Hypoventilation & Hyperventilation

  6. Gas Laws Dalton’s Law Henry’s Law Gases dissolve in liquids in proportion to their partial pressure in the air in contact with that liquid • Total pressure = sum of partial pressures • PATM = P N2 + P O2 + P CO2 • 100% = 79% + 21% + <1% • P O2 = 0.21 x 760mmHg = 160 • Partial pressure of Oxygen in atmosphere at sea level is 160 mmHg • Regardless of elevation, air is always 21% O2. • N2 is physiologically inert; ignore except for decompression sickness air P O2 =160 mmHg liquid P O2 =160 mmHg

  7. Why the difference in partial pressures in Air and Alveoli? Ventilation by Bulk Flow Gas exchange by Diffusion Where should the receptors be for the negative feedback loop for homeostasis? Gas exchange Gradient for CO2 is only 6 mmHg; CO2 is more soluble and permeable than O2

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