ISBN: 1145630790 / ISBN-13: 9781145630796
Clinical Disorders of the Heart Beat: A Handbook for Practitioners and Students
by Thomas Lewis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from ... Show synopsis This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ... 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 paroxysmal tachycardia, auricular flutter and fibrillation have a common pathological basis; they are one and all the outcome of new impulse formation in the heart. While it is true that the majority of hearts which show premature contractions never exhibit profounder derangements, it is also true that these occur for the most part in hearts in which single interruptions have been common; it follows that of hearts seen to-day, some of which show premature contractions and some of which show none, the incidence of grave irregularities will in later years be greater in the former than in the latter. I may summarise in the statement that, while premature contractions have unquestionably a relatively insignificant import, as compared to many forms of cardiac irregularity, to neglect them entirely is inadvisable. Although their detection should not. be allowed, in itself, to cripple or hamper the patient who is the subject of them, a re-examination of such cases from time to time is recommended. The first standpoint of treatment is already indicated. The presence of premature beats does not call for a limitation of bodily exercise; it should not prejudice the vocation or pastime of the patient. Restrictions are necessitated only where other signs render them advisable, or where some particular act or occupation is definitely known to originate symptoms of a distressful kind. The anxi...