ABSTRACT
INTRODUCTION: Signal-averaged electrocardiography is a non-invasive, computerized technique that amplifies, filters, and averages cardiac electrical signals reducing contaminating noise to obtain a high-resolution record. The most widely used signal averaging (SA) method involves a bipolar X, Y, and Z orthogonal lead system. Information is limited regarding its application in the standard resting 12-lead ECG. A novel system combining a high-resolution 12-lead ECG (HR-ECG) registered by SA with advanced analysis tools is presented. HISTORY: Original programming of a commercially available signal-averaged HR-ECG device was modified, introducing more exhaustive electrocardiographic assessment instruments. DESCRIPTION: Using SA techniques and placing surface electrodes in the standard 12-lead ECG positions, a HR-ECG is acquired within a bandwidth of 0.25 to 262 Hz at a rate of 1000 samples per second. It is advisable to average at least 200 cycles, taking three to five minutes to record. The package includes different optional high-frequency filters, manual calipers, zoom/superimposing/amplification functions. CLINICAL ROLE: The main strength lies in obtaining a low noise HR-ECG with zooming capabilities without definition loss. Other potential advantages are the greater ease in performing high precision analysis and comparing different ECG leads simultaneously. CURRENT PROBLEMS: The primary limitation is the inability to document intermittent or dynamic electrocardiographic disorders because of averaging similar electrical cardiac cycles. FUTURE DEVELOPMENTS: Adding artificial intelligence and further refinements in the averaging process could lead to software upgrades. CONCLUSION: Integrating HR-ECG, obtained through SA techniques, with novel advanced analysis tools can enhance the ability to detect electrocardiographic disorders of permanent expression expeditiously.
Subject(s)
Artificial Intelligence , Electrocardiography , Electrocardiography/methods , Electrodes , Humans , SoftwareABSTRACT
La internación en nuestro servicio de un paciente con dermatomiositis y el hallazgo de una neoplasia concomitante, de localización poco frecuente, motivó la revisión de la literatura al respecto y la posterior comunicación de este caso
Subject(s)
Middle Aged , Humans , Male , Carcinoma, Squamous Cell/complications , Dermatomyositis/classification , Dermatomyositis/complications , Carcinoma, Squamous Cell/diagnosisABSTRACT
La internación en nuestro servicio de un paciente con dermatomiositis y el hallazgo de una neoplasia concomitante, de localización poco frecuente, motivó la revisión de la literatura al respecto y la posterior comunicación de este caso (AU)
