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BEREGOVICH J, BLEIFER S, DONOSO E, GRISHMAN A. The vectorcardiogram and electrocardiogram in ventricular septal defect, with special reference to the diagnosis of combined ventricular hypertrophy. BRITISH HEART JOURNAL 1998; 22:205-19. [PMID: 13799146 PMCID: PMC1017647 DOI: 10.1136/hrt.22.2.205] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gamboa R, Klingeman JD, Pipberger HV. Computer diagnosis of biventricular hypertrophy from the orthogonal electrocardiogram. Circulation 1969; 39:72-82. [PMID: 4235967 DOI: 10.1161/01.cir.39.1.72] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Orthogonal electrocardiograms obtained from 87 patients with necropsy evidence of biventricular hypertrophy (BVH) were compared to record samples obtained from normal subjects (N) and patients with left or right ventricular hypertrophy (LVH or RVH). From 333 different ECG measurements an attempt was made to select optimal discriminators of the various pathological entities. The best separation between the BVH sample and other entities was obtained by utilizing linear discriminant function analysis and a likelihood ratio test. By using a combined covariance matrix of BVH versus N, LVH, and RVH, 69% of the BVH sample was correctly classified, thus demonstrating that multivariate analysis can lead to a substantial improvement in diagnostic classification over previous studies reported in the literature.
To test the multivariate classification method against completely independent record samples, new series of LVH and RVH cases were compared to the BVH sample. The results were similar to those obtained against the original samples. When a "clinical" BVH sample was classified by the combined covariance matrix, 44% of the new cases were classified correctly.
A search was also made for optimal scalar and vectorial measurements that can be used in routine ECG interpretation without access to computer facilities. On using 96 percentile ranges, the separations were less efficient than those obtained by multivariate analysis but they still compared very favorably with previous reports.
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Effert S, Karytsiotis J, Engstfeld G, Panayotopoulos SN. Die Kammerhypertrophien bei Ventrikelseptumdefekt. Basic Res Cardiol 1966. [DOI: 10.1007/bf02120088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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SELZER A, EBNOTHER CL, PACKARD P, STONE AO, QUINN JE. Reliability of electrocardiographic diagnosis of left ventricular hypertrophy. Circulation 1958; 17:255-65. [PMID: 13511644 DOI: 10.1161/01.cir.17.2.255] [Citation(s) in RCA: 62] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This is an electrocardiographic-pathologic study in which presence and degree of left ventricular hypertrophy found at necropsy were correlated with electrocardiographic abnormalities suggesting the diagnosis of left ventricular hypertrophy. The nonspecificity of some electrocardiographic findings is emphasized by the occasional erroneous diagnosis of left ventricular hypertrophy.
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MASTER AM, SILVERBLATT ML, ROSENFELD I, DONOSO E. Electrocardiographic patterns simulating coronary occlusion in patients with chronic rheumatic cardiovalvular disease. Am Heart J 1957; 54:50-8. [PMID: 13435202 DOI: 10.1016/0002-8703(57)90078-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ireland CR, Witham AC, Harper HT. Congenital heart disease among mental defectives and an assessment of cardiac survey methods. N Engl J Med 1955; 252:117-25. [PMID: 13223995 DOI: 10.1056/nejm195501272520401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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PAGNONI A, GOODWIN JF. The cardiographic diagnosis of combined ventricular hypertrophy. BRITISH HEART JOURNAL 1952; 14:451-61. [PMID: 12987522 PMCID: PMC503821 DOI: 10.1136/hrt.14.4.451] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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GORDON A, GOLDBERG H. Correlation of the electrocardiographic pattern of right heart strain and evidence of right ventricular hypertension in congenital heart disease. Am Heart J 1951; 42:226-34. [PMID: 14856931 DOI: 10.1016/0002-8703(51)90242-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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