Teaching pulmonary gas exchange physiology using computer modeling.

Abstract:

:Students often have difficulty understanding the relationship of O(2) consumption, CO(2) production, cardiac output, and distribution of ventilation-perfusion ratios in the lung to the final arterial blood gas composition. To overcome this difficulty, I have developed an interactive computer simulation of pulmonary gas exchange that is web based and allows the student to vary multiple factors simultaneously and observe the final effect on the arterial blood gas composition (available at www.siumed.edu/medicine/pulm/vqmodeling.htm). In this article, the underlying mathematics of the computer model is presented, as is the teaching strategy. The simulation is applied to a typical clinical case drawn from the intensive care unit to demonstrate the interdependence of the above factors as well as the less-appreciated importance of the Bohr and Haldane effects in clinical pulmonary medicine. The use of a computer to vary the many interacting factors involved in the arterial blood gas composition appeals to today's students and demonstrates the importance of basic physiology to the actual practice of medicine.

journal_name

Adv Physiol Educ

authors

Kapitan KS

doi

10.1152/advan.00099.2007

subject

Has Abstract

pub_date

2008-03-01 00:00:00

pages

61-4

issue

1

eissn

1043-4046

issn

1522-1229

pii

32/1/61

journal_volume

32

pub_type

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