Book Review DER HERZ-KATHETERISMUS BEI ANGEBORENEN UND ERWORBENEN HERZFEHLERN. By Otto Bayer, Franz Loogen and Helmut Wolter. Stuttgart, 1954, Georg Thieme Verlag. 191 pages with 131 figures. Heart catheterization originated in Germany (W. Forssmann, 1929, to whom the book is dedicated), but was practically forgotten there for about twenty-five years. It was only after the pioneering work of American authors that the method was reintroduced in Germany, and it is used now on a rather la;ge scale. While this monograph is based mainly on the material of 800 catheterizations performed by the authors during the past five years at the University Hospital in Dusseldorf, the discussion is quite comprehensive with a bibliography of twelve pages. In the introductory chapters there is a condensed description of equipment and technique, which includes well-known methods (such as Haldane gas analysis), as well as interesting new developments, such as the use of Neuhaus’ capacitance manometer for pressure recording, or the measurement of the oxygen saturation with photometry of reflected light. A following chapter concerns the evaluation of results, including analysis of pressure curves and the various equations for calculating shunts, resistances, valvular areas, etc. Because of the inaccessibility of the pul- monary veins, the authors make the simplifying assumption that the oxygen saturation of pul- monary venous blood is 96 per cent in all cases without impairment of diffusion. Of particular interest is the chapter on complications (Chapter VI, pp. 51 to 61). The instructions given in the first 60 pages are so complete that no or little additional information is needed for application of this method. In the second part (pp. 62 to 171), there is a systematic discussion of heart catheterization in the various types of congenital heart disease, mitral stenosis and insufficiency, with an appendix on the changes after mitral stenosis surgery. The excellence of the presentation is matched by the excellence of the numerous illustrations. To the knowledge of the reviewer, this book has no equivalent on an international scale and can be recommended without reservation. E. S. Announcements Beginning in the March, 1955, issue of the AMERICAN HEART JOURNAL an abstract of each article will appear in INTERLINGUA. The University of Minnesota announces a continuation course in RECENT ADVANCES IN INTERNAL MEDICINE FOR INTERNISTS which will be presented at the Center for Continuation Study from Feb. 14 to 16, 1955. This year’s course will deal with various aspects of hematology, cardiology, endocrinology, and respiratory physiology. The course will be presented under the direction of Dr. C. J. Watson, Professor and Director, Department of Medicine. Lodging ac- commodations will be available at the Center for Continuation Study.

Der herz-katheterismus bei angeborenen und erworbenen herzfehlern: By Otto Bayer, Franz Loogen and Helmut Wolter. Stuttgart, 1954, Georg Thieme Verlag. 191 pages with 131 figures

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Book Review

DER HERZ-KATHETERISMUS BEI ANGEBORENEN UND ERWORBENEN HERZFEHLERN. By Otto

Bayer, Franz Loogen and Helmut Wolter. Stuttgart, 1954, Georg Thieme Verlag. 191 pages with 131 figures.

Heart catheterization originated in Germany (W. Forssmann, 1929, to whom the book is

dedicated), but was practically forgotten there for about twenty-five years. It was only after the pioneering work of American authors that the method was reintroduced in Germany, and it is

used now on a rather la;ge scale. While this monograph is based mainly on the material of 800 catheterizations performed by the authors during the past five years at the University Hospital

in Dusseldorf, the discussion is quite comprehensive with a bibliography of twelve pages. In the introductory chapters there is a condensed description of equipment and technique,

which includes well-known methods (such as Haldane gas analysis), as well as interesting new developments, such as the use of Neuhaus’ capacitance manometer for pressure recording, or the

measurement of the oxygen saturation with photometry of reflected light. A following chapter

concerns the evaluation of results, including analysis of pressure curves and the various equations for calculating shunts, resistances, valvular areas, etc. Because of the inaccessibility of the pul-

monary veins, the authors make the simplifying assumption that the oxygen saturation of pul-

monary venous blood is 96 per cent in all cases without impairment of diffusion. Of particular interest is the chapter on complications (Chapter VI, pp. 51 to 61). The instructions given in

the first 60 pages are so complete that no or little additional information is needed for application of this method. In the second part (pp. 62 to 171), there is a systematic discussion of heart

catheterization in the various types of congenital heart disease, mitral stenosis and insufficiency, with an appendix on the changes after mitral stenosis surgery. The excellence of the presentation is matched by the excellence of the numerous illustrations. To the knowledge of the reviewer,

this book has no equivalent on an international scale and can be recommended without reservation.

E. S.

Announcements

Beginning in the March, 1955, issue of the AMERICAN HEART JOURNAL an abstract of each

article will appear in INTERLINGUA.

The University of Minnesota announces a continuation course in RECENT ADVANCES IN INTERNAL MEDICINE FOR INTERNISTS which will be presented at the Center for Continuation

Study from Feb. 14 to 16, 1955. This year’s course will deal with various aspects of hematology, cardiology, endocrinology, and respiratory physiology. The course will be presented under the

direction of Dr. C. J. Watson, Professor and Director, Department of Medicine. Lodging ac- commodations will be available at the Center for Continuation Study.