AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
An accurate estimate of this volume is important because respiratory dead space ( Vd/Vt, discussed previously) is composed of both anatomical and. The ventilation-perfusion ratio is higher in the apex of the lung than at its base. Perfusion of the pulmonary capillaries is closely regulated to match ventilation in order to maximize gas exchange. Mr Chan presented this data at a scientific conference (Asian Pacific Society of Respirology) in November 2007. The official definition of anatomic dead space is that it is that part of the inhaled volume that remains in the airways at the end of inhalation and does not participate in gas exchange. Changes in Physiological Dead Space During Deliberate Hypotension (November 1964) A New Equal Area Method to Calculate and Represent Physiologic, Anatomical. The physiologic dead space is the volume of inspired air that does not participate in gas exchange. This project was completed by our research student John Ho Chan whilst working at the MRI as an Undergraduate Research Opportunity Programme Scholar. We are now measuring this index in people with asthma and chronic obstructive pulmonary disease. The results supported our hypothesis because even though the subjects were young and had normal lung function our index of flow-dependence was able to differentiate between subjects with normal and 'super' normal lung function. Our subjects were healthy young adults with normal lung function. We have now completed a study to test the hypothesis that this flow-dependence of anatomical dead space provides a sensitive physiological index of abnormal airway function. We have previously shown that volume of the lung airways (anatomical dead space) varies with expired flow.
0 Comments
Read More
Leave a Reply. |