Document 71NVQv3npr4dmoR3XppEz1dqR

BY APPOINTMENT CLAY A. WAGGENSPACK, JR., M.D. INTERNAL MEDICINE DISEASES OF THE CHEST 4665 NORTH BOULEVARD BATON ROUGE, LOUISIANA July 5, 1973 PHONE 926-2012 Theodore R. Robinson, M, D. Ethyl Corporation Post Office Box 3^1 Baton Rouge, Louisiana 70821 Dear Sir: -. I am enclosing the pulmonary function studies on the five patients who were sent over for vital capacity and F.E.V.-l. For my own edification, I went ahead and did the complete study on each one of them, and I'm sending a copy of that, too. As you can see, they are all essentially normal with the exception of Aucoin, and even his reduction in F.E.V.-l was quite slight. As you can also see, doing the additional studies did not con tribute any additional significant information. So, I think the two figures would be entirely adequate for your purposes. An F.E.V.-l of 3000 cc. or 69% of predicted normal is hardly the kind of figure that would necessitate taking a man off a job. I do think that it would be prudent to repeat it annually just for your own protection. If you are going to be doing many of these and considering getting your own equipment, I'll be glad to show you the Jones machine that I use, but the secret of good tests is a good technician, and Mrs. Meiers will happily demonstrate to one of your people how to do it properly if you elect to do so. Many thanks for an opportunity to check these studies. Respectfully yours C: Jr., M. D P.S. If more sophisticated determinations are desired, there is some enthusiasm currently about a calculation called "Closing Volume" in which the expiratory flow is plotted at volumes instead of time, and this is said to pick up early impairment long before any other technique will do so. If you are interested in more information . about that, let me know, and I'll be glad to get you the references, CAWJr:db Enclosures ETH00002908 CLAY A/ WAGGENSPACK, JR., M.D. BNDD AW 3412082 OFFICE PHONE: 926-2012 4665 NORTH BOULEVARD RES. PHONE 341-3109 BATON ROUGE, LOUISIANA 7^ For. Agk Address 9 Date. TRR:dp ETH00002909