1 / 7

Additional Chapter 6 information

Additional Chapter 6 information. Gas Exchange Data 03/07/2011. Gas Exchange and Ventilatory Responses – pg.144. VO2max or VO2peak (difference?) is necessary and is “a powerful marker of prognosis”.

lovey
Download Presentation

Additional Chapter 6 information

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Additional Chapter 6 information Gas Exchange Data 03/07/2011

  2. Gas Exchange and Ventilatory Responses – pg.144 • VO2max or VO2peak (difference?) is necessary and is “a powerful marker of prognosis”. • Study: patients with <4.9 METS (17.2 ml/kg/min)had the highest rate of cardiovascular disease and all cause mortatlity as compared to those with higher METS of 5-9.2 (17.5-32.2). For every one MET increase in exercise capacity there is a 12% improvement in survival.

  3. RR = rest 12-15 bpm Ex: 40-50 bpm • >60 bpm = hyperventilation • RER • VE • VCO2

  4. RQ, RER, R: Gas exchange - measured at the mouth not the tissue level. • RER or R = VCO2 production VO2 consumption 75% of O2 consumed is converted to CO2, so what will happen to R during Exercise?

  5. Respiratory Exchange Ratio • RER: Tells what type of fuel we are burning - Fats, CHO, combination of both. • RER = 0.7 predominately fats as a fuel • R = 0.85 – 50% CHO and 50% Fats • RER = 1.0 100 % CHO as a fuel, recent ingestion of CHO. [1,2]

  6. RQ • R = 0.7 - 0.95 Normal Resting Value [2] • R = 1.10-1.20 at max then rises to >1.4 or 1.5 during recovery. R will increase dramatically during recovery as the body tries to eliminate CO2 stores [2]

  7. VE: Represents the volume of air inspired by the lungs in one minute. Ventilation (VE) (L/min) = RR (br/min) x tidal volume (L) For rest conditions, VE (L/min) = 12 (br/min) x 0.5 (L) = 6 L/min For exercise at VO2max, VE (L/min) = 60 (br/min) x 3.0 (L) = 180 L/min

More Related