A new computer program for comparative analysis of serial scalar electrocardiograms: description and performance of the 1976 IBM program.
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Biomedical subjects
Publications and source records attributed to M I Ferrer.
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Recent increase in our knowledge of the basic features involved in ventricular preexcitation has moved it from being a somewhat rare curiosity for which there was no cure to an important medical condition requiring careful therapeutic planning. This review summarizes a body of information concerning mechanisms, various forms of preexcitation, embryologic features, electrophysiology and special testing maneuvers, treatment, prognosis and aviation plus insurance aspects of the syndrome. A new classification of the locations of the Kent bundles in the Wolff-Parkinson-White form of preexcitation is also offered.
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It is now possible to diagnose early cor pulmonale by utilizing electrocardiographic fluctuations which are the result of moderate pulmonary hypertension and the accompanying effect upon right ventricular function. This holds whether the ECG alterations are produced by chronic obstructive pulmonary disease or by the rarer forms of obliterative lung disease. The late stage of cor pulmonale, in which right ventricular hypertrophy is manifest, should now be rarely encountered in view of our improved understanding of cor pulmonale and more rational therapeutic approaches to the underlying disorders.
In reviewing the present-day status of cor pulmonale, it is clear that considerable progress has been made in almost all instances of the disease. It is clearly a preventable form of heart disease in most cases and it is treatable and curable in its most common form, i. e., in COPD. One must agree with Petty, that today we have effective means of caring for the majority of respiratory cripples. Therapy for lung disease now appears even to have reduced the expected rate of pulmonary function deterioration in some patients. Surely with improved gas exchange and early detection of respiratory insufficiency the outlook for patients with respiratory diseases leading to cor pulmonale is better today than it was 30 years ago.
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