Correlation and concordance between echocardiographic measurements obtained during echocardiography and digitized image measurements: transversal study
Document title: Correlation and concordance between echocardiographic measurements obtained during echocardiography and digitized image measurements: transversal study
Journal: Arquivos brasileiros de cardiologia
Database: PERIÓDICA
System number: 000288995
ISSN: 0066-782X
Authors: 1
1
1
1
1
1
1
1
Institutions: 1Fundacao Universitaria de Cardiologia, Instituto de Cardiologia do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul. Brasil
Year:
Season: Abr
Volumen: 86
Number: 4
Pages: 283-288
Country: Brasil
Language: Portugués, inglés
Document type: Artículo
Approach: Aplicado
English abstract OBJECTIVE: To evaluate the correlation and concordance between the measurements of echocardiographic analysis of cardiac dimensions obtained through the Echo off-line applicative (software for obtaining digitized image measurements in a dedicated workstation) available to public domain, and those obtained through the conventional method. METHOD: Transversal contemporary study, of 56 randomized patients whose images were obtained during examina-tions. The measurements of the M mode and 2D, were done in the ventricles, left atrium, and aorta by the Echo off-line program. These measurements were compared to those obtained by another professional, through Pearson's correlation test (r), alpha = 0.05 and by concordance analysis (Bland and Altman). RESULT: The measurements carried out by the Echo off-line system showed r that varied from 0.85 to 0.98. The analysis of concordance showed that for most measu-rements, the mean difference between the methods was approximately zero. The variation of absolute values did not show, in average, a clinical significance. The Echo off-line applicative allows a reduction of approximately 30% in the time spent to obtain the measurements. CONCLUSION: This study demonstrated the accuracy of the Echo off-line program to measure cardiac dimensions in a dedicated workstation, showing that it can be routinely used in echocardiography labs
Portuguese abstract OBJETIVO: Avaliar a correlação e concordância entre medidas ecocardiográficas das dimensões cardíacas, obtidas através do aplicativo Echo off-line (programa para obtenção de medidas de imagens digitalizadas em estação de trabalho dedicada), com as realizadas convencionalmente. MÉTODOS: Estudo transversal, contemporâneo, sendo randomizados 56 pacientes. Através do programa Echo off-line foram mensuradas as medidas ao modo M e 2D ao nível dos ventrículos, do átrio esquerdo e da aorta. Estas medidas foram comparadas às realizadas por outro profissional, através do teste de correlação de Pearson (r), com alfa crítico de 0,05 e pela análise de concordância (Bland e Altman). RESULTADOS: As mensurações realizadas no sistema Echo off-line demonstraram r de 0,85 a 0,98. A análise de concordância mostrou que, para a maioria das medidas, a diferença média entre os métodos foi aproximadamente zero. A variação de valores absolutos não apresentou, em média, significância clínica. O aplicativo Echo off-line permite uma redução de, aproximadamente, 30% no tempo para realização das medidas. CONCLUSÃO: Este trabalho demonstrou a acurácia do programa Echo off-line para mensurar as dimensões cardíacas em estação de trabalho dedicada, podendo ser utilizado rotineiramente nos laboratórios de ecocardiografia
Disciplines: Medicina
Keyword: Diagnóstico,
Sistema cardiovascular,
Imágenes digitales,
Ecocardiografía,
Medición,
Corazón,
Interpretación
Keyword: Medicine,
Cardiovascular system,
Diagnosis,
Echocardiography,
Digital images,
Measurement,
Heart
Full text: Texto completo (Ver HTML)