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Posts Tagged ‘ECG’

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 67 – PULMONARY HYPERTENSION Robyn J. Barst Definition Pulmonary hypertension is a common accompaniment of many cardiac and pulmonary disorders, for which the status of the pulmonary vascular bed is oftentimes the principal determinant of the clinical manifestations, course, and feasibility of surgical treatment. […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 63 – CARDIAC ARRHYTHMIAS WITH SUPRAVENTRICULAR ORIGIN Masood Akhtar Definition and Pathobiology Both of the atria and corresponding ventricles are electrically insulated from each other by fibrous tissue that is the anatomic atrioventricular (AV) junction. The fibrous structures in the AV junction are the […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 61 – APPROACH TO THE PATIENT WITH SUSPECTED ARRHYTHMIA Jeffrey E. Olgin Clinical Manifestations Patients with suspected arrhythmias can present in a variety of ways. Typical symptoms include palpitations, syncope, and presyncope (dizziness). On occasion, arrhythmias can manifest more subtly as exercise intolerance, lethargy, […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier CARDIAC ARRHYTHMIA A cardiac arrhythmia is an abnormality in the timing or sequence of cardiac depolarization. There are two predominant types of cardiac arrhythmias: tachyarrhythmia, an abnormally rapid cardiac rhythm (heart rate above 100 beats per minute); and bradyarrhythmia, a slow cardiac […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier SUGGESTED READINGS Arad M, Maron BJ, Gorham JM, et al: Glycogen storage disease presenting as hypertrophic cardiomyopathy.  N Engl J Med  2005; 352:362-372.A detailed analysis Burkett EL, Hershberger RE: Clinical and genetic issues in familial dilated cardiomyopathy.  J Am Coll Cardiol  2005; 45:969-981.Echocardiographic and ECG screening of first-degree relatives is indicated Doughan […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 60 – PRINCIPLES OF ELECTROPHYSIOLOGY Hugh Calkins The function of the human heart requires rhythmic beating on the average of 70 times a minute, 24 hours a day, for 80 years or more. The close to 3 billion contractions of the cardiac musculature that […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 59 – DISEASES OF THE MYOCARDIUM AND ENDOCARDIUM William McKenna    MYOCARDIAL DISEASE Although descriptive rather than etiologic, the usual designation of cardiomyopathy as hypertrophic, dilated, or restrictive has provided a useful clinical and prognostic framework for diagnosis and management ( Table 59-1 ). […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 56 – CATHETERIZATION AND ANGIOGRAPHY David P. Faxon Cardiac catheterization and angiography provide for detailed assessment of the anatomy and physiology of the heart and vasculature and represent the “gold standard” for assessment of cardiac disease. The technique first was applied to humans by […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 54 – NUCLEAR CARDIOLOGY AND COMPUTED TOMOGRAPHY George A. Beller   Christopher M. Kramer NUCLEAR CARDIOLOGY The techniques of nuclear cardiology permit the noninvasive imaging of myocardial perfusion under stress and resting conditions and of resting regional and global function by use of radionuclide imaging agents and […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier CARDIAC COMPUTED TOMOGRAPHY Technical Aspects Computed tomography (CT) imaging is based on x-rays derived from a source that rotates around the body and emits a fan-shaped beam. The beam is focused by collimators and then detected sensitively. A cross-sectional image is derived […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 55 – CARDIOVASCULAR MAGNETIC RESONANCE IMAGING Warren J. Manning UTILITY and types OF CARDIOVASCULAR MAGNETIC RESONANCE IMAGING The combined attributes of superior image quality and flexibility for assessment of cardiac anatomy, ventricular function, great vessel and coronary anatomy and blood flow, myocardial viability, and […]

Goldman: Cecil Medicine, 23rd ed. Copyright © 2007 Saunders, An Imprint of Elsevier Chapter 52 – ELECTROCARDIOGRAPHY Leonard Ganz   Edward Curtiss Electrocardiography, which has changed surprisingly little since it was initially introduced by Einthoven in the early 1900s, allows recording of myocardial activation from several vantage points on the body’s surface, thereby permitting analysis of electrical activation in different myocardial […]

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