E. Calculate the alveolar ventilation for Lily and Jenna. Assume their dead spac

Question

E. Calculate the alveolar ventilation for Lily and Jenna. Assume their dead space is 175 mL. Compare them to a normal value (see table 17.4 of the textbook). Show your work.

F. Match the patients with their most likely “diagnosis”. Choose between the following conditions: normal, heavy exercise, moderate exercise, asthma attack, hyperventilation, hypoventilation, pneumothorax, and lack of surfactant.

Explain your answers. To receive credit, make sure to answer each sub-question in its appropriate space below. There is no guarantee you will receive credit for information that is not properly organized.

Breathing TV ERV IRV RV (br/min) Mike 25 3500 72S 575 1000 5800 ND Jenna 14 325 800 2400 2300 5825 42% 500 1500 3000 1000 6000 78% Lily 12 750 1400 2700 1000 5850 80% Richard 20 Beth 15 250 700 1450 500 2900 75% Arterial PCO2 Arterial pH Hong (mm Mike t 40.0 7.39 -4 -4 Jenna 39.6 17.41 -4 -4 ly 740 -4 -4 Richard 22.3 7.76 Beth 150.2 1.28 0 TV: tidal volume; ERV: expiratory reserve volume; IRV: inspiratory reserve volume RV: residual volume, TLC: total lung capacity; FEVI: forced expiratory volume in 1 second; 2: partial pressure of Co2; Pip: intrapleural pressure

Explanation / Answer

E) Alveolar volume =Tidal volome - Dead space

Normal value 500-150 =350ml. Alveolar ventilation = 350.breathing rate= 350.15 =5250 ml/min (Average)

For Lily alveolar ventilation = (500 - 175).12 = 3900ml/min.

For Jena the value is =( 325-175). 14 = 2100ml/min.

Alveolar ventilation value rages from apr.4200ml. (rest) to apr 8500ml.( moderate exercise)

Lily's condition seems to be normal but the value in case of Jena is far below the normal

F) Lily seems to be normal

Jena may be suffering from hypoventilation

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