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Biomedical subjects

D Schwartze

Publications and source records attributed to D Schwartze.

At least 19 recordsLinked to original sources

[Frank N. Wilson and his significance for cardiology].

100 years ago Frank Norman Wilson (Nov. 19th 1890 to Sept II. nd. 1952) was born. Dr. Wilson has been the inaugurator of the modern era of electrocardiography and exponent of the concepts of the significance of changes in the ventricular complex. Wilson demonstrated his theory of the negativity of the ventricular cavity, activated at the endocardial, progressing to the epicardial surface with the inscription of the intrinsic deflection as the impulse arrived as the epicardial surface of the heart. He proved the value of the unipolar exploring electrode with the whole body connected to a central terminal as the indifferent electrode.

Cardiology

[Compression syndrome of the left main bronchus].

Case report of the findings of a pulmonary atelectasis as the result from a compression of the left main bronchus by an enlarged left atrium with preconsisting double mitral valve disease and aortic insufficiency (King-Landau-Rivero-Syndrome). The diagnosis was confirmed clinically, by x-ray and by endoscopy.

Adult

[August Hoffmann--a pioneer in heart diagnosis].

August Hoffmann was born in Münster on 2 June 1862. In 1891 he set up his medical practice in Düsseldorf as specialist for internal medicine and neurology. There in 1907 he became first professor in ordinary for internal medicine when the Academy for Practical Medicine was founded. Up to 1927 he was head of the medical clinic. On 17 February 1929 he died in Düsseldorf. At first Hoffmann used the X-rays which were discovered in 1895 for the heart diagnostics, above all for the determination of the size of the heart. A general notoriety he obtained by publication of the monography about the paroxysmal tachycardia (type Bouveret-Hoffmann) in 1900. After the preliminary works of Einthoven he belonged to the first German clinicians who dealt with electrocardiography (above all problems of arrhythmia). In 1914 he published the second ECG-book in German language. Hoffmann founded the Düsseldorf cardiologic tradition.

Cardiology

[Friedrich Kraus--originator of functional diagnosis and electrocardiography in Germany].

The 50th anniversary of the death of Friedrich Kraus (31 May 1858 to 1 March 1936) was the occasion to remind of the merits of this internist for the development of the functional diagnostics and the spreading of the electrocardiography in Germany. After the first professorship in Graz (foundation of the constitution research) he was appointed director of the 2nd Medical Clinic of the Charité in Berlin 1902, where he worked up to his discharge from the active service in 1927. From 1906 he dealt with electrocardiological problems, mainly together with G.F. Nicolai (1874-1955). In 1910 the first monography on "The Electrocardiogram of the Healthy and Ill Man" was published. After World War I Kraus dealt with the "Special Pathology and Therapy of Internal Diseases" and the "General and Special Pathology of the Person". In the theory of the depth person, being ahead of the time, psychosomatic connections were explained. A selective bibliography of the most important works of Kraus is added to the paper.

Electrocardiography

[The physiologic 3d heart sound in childhood. Determination in phonocardiography and assessment by auscultation].

The phonocardiographic characteristics of the IIIrd heart sound in children, accepted in the literature, are examined. In 231 out of 687 children with a normal heart, aged from hour 0 to 17 years, the IIIrd heart sound (HS) was phonocardiographically registered in the t and m1 frequency band. The findings on the frequency, sound frequency, sound duration, intervals II-III and T-III, and IIIrd HS amplitude related to the Ist and IInd HS amplitudes are compared with data in the literature. The audibility of the IIIrd HS increases with its low frequency equal or higher than 25 Hz, and its amplitude reaching or exceeding one-quarter of the preceding Ist HS and one-third of the preceding IInd HS.

Adolescent

[Willem Einthoven. Thoughts on the occasion of his 125th anniversary].

125 years ago William Einthoven (May 21st, 1860, to Sept. 28th, 1927) was born. Already at the age of 25 he was appointed professor for physiology at Leiden University, Holland. From 1894 to 1913 he worked out essential fundaments of modern electrocardiology. He constructed the string galvanometer and thus he created an essential technical basis for the development of clinically applicable electrocardiographs. Apart from the electrocardiography also the phonocardiography owes decisive impulse to Einthoven and his school. Besides a biographical outline the paper gives a survey of essential facts of our electrocardiographic knowledge going back to Einthoven and compiles the most important papers in a selective bibliography.

Bibliographies as Topic