Clinical Disorders of the Heartbeat; A Handbook for Practitioners and Students

Clinical Disorders of the Heartbeat; A Handbook for Practitioners and Students

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...function has been more than transient or that the nature of it has been serious. Observations and inquiry also teach that they may be present constantly and for long periods, and that those who manifest them may do so from an early to a good old age, such patients never showing any other sign or symptom of cardiac disability. It may be said therefore, that in themselves premature beats cannot be regarded as evidences of serious involvement of the heart muscle, although such involvement is often found in conjunction with them. The question can be regarded from another standpoint. The premature contractions, when present and frequent, must inevitably increase the work of the heart, but the amount of the added burden is not easy to ascertain. It is probably not weighty, for where the muscle is evidently compromised and frequent premature contractions occur periodically, little change in the condition of the patient can be detected from time to time, and serious embarrassment of the circulation as a direct result of them is only suspected on rare occasions. Modern observations therefore tend to minimise the significance of these beats; in fact it has been taught that they may be neglected in the forecast. My own standpoint is a more guarded one. Premature contractions constitute and bear witness to defects; there is the mechanical imperfection and there is the evidence of altered cardiac nutrition; and the more frequent the interruptions, the greater the degree of such defects. Moreover, single premature beats testify to the presence of a process which may lead to cardiac irregularities of a more serious nature. They may be precursors of grave conditions which are considered in subsequent chapters. Premature beats, true more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • United States
  • English
  • black & white illustrations
  • 1236828623
  • 9781236828620