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08 - • V(e(ALV = V(e –(ADS x RR Physiological Dead...

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EXSC 205 – 3/4/08 13:53 TOTAL LUNG CAPACITY (TLC) Pulmonary Disease Restrictive Disorders (volumes are abnormally low) o Emphysema Obstructive Disorders (speed of ventilation is off) o Asthma, Bronchitis TLC stays the same throughout age Vital Capacity (VC) goes down over time and age Residual Lung Capacity (RLV) goes up over age V(e) = TV ((L/b)) x RR ((b/min)) Volume = Tidal volume (liters/breath) x respiratory rate (breaths/minute) 10 L/min = TV x 10 b/min TV = 1 Liter/breath Anatomical Dead Space (ADS) ADS – 1 lb = 1 mL Breathing Patterns 1.  V(e) = 10 L/min,  TV = 1 L/b,  RR = 10 b/min

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Unformatted text preview: • V(e(ALV)) = V(e) – (ADS x RR) Physiological Dead Space (PDS) PDS = ADS + unused Alveoli TV is usually 50% of VC GAS EXCHANGE Atmospheric (ATM) • 02 = 20.93% • C02 = .03% • N2 = 79.04% Gas Exchange Due to pressure change • Barometric Pressure o @ SL = 760 mm Hg o P02 = .2093 x 760 = 1.59mm Hg Pressure gradient determines ultimate gas diffusion Hemoglobin = Hb There is an Hb – O2 dissociation curve Basically the more oxygen you get (to a point), the more hemoglobin you get 13:53 13:53...
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08 - • V(e(ALV = V(e –(ADS x RR Physiological Dead...

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