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The Direct Influence of Gradual Variations of Temperature Upon the Rate of Beat of the Dog's Heart (Classic Reprint) - Brossura
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Excerpt from The Direct Influence of Gradual Variations of Temperature Upon the Rate of Beat of the Dog's Heart
IN the year 1881 I briefly described (1) a method of experimenting by which the heart and lungs of a Dog or Cat could be completely isolated physiologically from the remainder of the body of the animal, and kept alive some hours for study in an apparently normal condition, the heart beating regularly and maintaining a good arterial pressure. Since then I have been at work investigating the influence of various conditions upon the pulse-rate of Dogs' hearts so isolated; while under my supervision several of my pupils have been engaged in studying the work done in a unit of time by such hearts under different external conditions.
As regards the effects of variations of arterial pressure upon the pulse-rate of the isolated Dog's heart, my results have already been published and detailed observations as to the influence of variations in 'venous pressure will shortly be printed. But in so far as the influence of temperature variations upon the cardiac rhythm is concerned, only a brief preliminary announcement (3) has been made. In the present paper I propose to give a full account of my experiments upon this subject, which is one that, apart from and in addition to its purely physiological interest, has considerable practical importance in connexion with inquiries as to the immediate cause of the quick pulse so constantly found in warm-blooded animals suffering from fever.
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The Direct Influence of Gradual Variations of Temperature Upon the Rate of Beat
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Paperback. Condizione: New. Print on Demand. This book, a detailed study of the influence of temperature on heart rate, is the result of the author's extensive experiments on isolated dog hearts. Prior to the author's work, scientists had largely relied on extrapolating data from frog hearts or human observations to understand the relationship between temperature and heart rate in mammals. However, the author demonstrates that the direct application of temperature to the mammalian heart offers unique insights not available through other methods. The book outlines a novel technique for isolating the heart while keeping it alive and perfused with a controlled blood supply, allowing for meticulous manipulation of temperature. The author's experiments reveal that temperature exerts a direct influence on the heart rate of mammals, with higher temperatures leading to faster heart rates and vice versa. This finding challenges the prevailing notion that only a decrease in temperature can slow the heart rate and demonstrates the importance of studying the direct effects of temperature on the heart. The book concludes by emphasizing the significance of understanding how temperature influences heart rate, as it has implications for our comprehension of the physiological regulation of body temperature and potentially abnormal heart rhythms. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781334530197_0
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The Direct Influence of Gradual Variations of Temperature Upon the Rate of Beat of the Dog's Heart Classic Reprint
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781334530197
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781334530197
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