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Kreislauf-Buecherei, herausgegeben in Verbindung mit der deutschen Gesellschaft fuer Kreislaufforschung. Band XIV: Die funktionelle Beurteilung des Lungen-und Herzkranken.

Paul Kezdi, M.D.
AMA Arch Intern Med. 1956;98(4):529-530. doi:10.1001/archinte.1956.00250280131019.
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ABSTRACT

This monograph describes a functional evaluation of pulmonary and cardiac disease by a spirographic method. This method was developed by Knipping, at the University of Köln, many years ago and was used recently more intensively by this group for cardiac evaluation. The first part describes the apparatus and the method of registration. The spirometer enables the observer to calculate the oxygen consumption directly from the graph during room air breathing and during 100% oxygen breathing by a simple switch to the oxygen tank. For exercise a hand-moved ergometer is used, which allows exact calculation of the work performed and automatic control of the work required from the patient.

Besides the determination of the conventional vital capacity and maximum breathing capacity, the so-called oxygen uptake deficit is tested at rest or during exercise. The oxygen uptake deficit is the difference between the oxygen consumptions while the patient breathes room air or

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