Aim of the present study was to propose an innovative TCE10 index (defined as the T-wave cumulative normalized energy at 10 Hz, in %) as a useful tool to characterize the T wave in terms of its frequency content, and to test the TCE10 ability to discriminate abnormal cases of repolarization. To this aim, ECG recordings (X, Y, Z leads and vector-magnitude signal, VMS) of 23 control healthy (CH) subjects and 23 antero-septal acute myocardial infarction (ASAMI) patients were analysed. Abnormal repolarization was identified when TCE10 was below a threshold value, defined as the 25th percentile of the TCE10 distribution over the CH population. Results indicate that the ASAMI population was characterized by lower TCE10 values than the CH population (X: 93.9 +/- 5.9% vs. 98.2 +/- 1.2%; Y: 95.2 +/- 4.5% vs. 97.8 +/- 1.4%; Z: 97.4 +/- 1.6% vs. 99.1 +/- 1.5%; VMS: 95.7 +/- 2.8% vs. 97.9 +/- 1.3%; P<0.01). Moreover, the ASAMI patients were discriminated from the CH subjects with a lead-independent specificity of 74% and a lead-dependent sensitivity of 78%, 61%, 87% and 57% for lead X, Y, Z and VMS, respectively. In conclusion, compared to the CH subjects, the ASAMI patients show increased high-frequency spectral energy and were discriminated from the former with satisfactory values of sensibility and specificity.

A New T‐wave Frequency Based Index for Discrimination of Abnormal Repolarization / Giuliani, Corrado; Burattini, Laura. - In: COMPUTING IN CARDIOLOGY. - ISSN 2325-8861. - 39:(2012), pp. 421-424. (Intervento presentato al convegno Computing in Cardiology 2012 tenutosi a Cracovia, Polonia nel 9-12 Settembre 2012).

A New T‐wave Frequency Based Index for Discrimination of Abnormal Repolarization

GIULIANI, CORRADO;BURATTINI, LAURA
2012-01-01

Abstract

Aim of the present study was to propose an innovative TCE10 index (defined as the T-wave cumulative normalized energy at 10 Hz, in %) as a useful tool to characterize the T wave in terms of its frequency content, and to test the TCE10 ability to discriminate abnormal cases of repolarization. To this aim, ECG recordings (X, Y, Z leads and vector-magnitude signal, VMS) of 23 control healthy (CH) subjects and 23 antero-septal acute myocardial infarction (ASAMI) patients were analysed. Abnormal repolarization was identified when TCE10 was below a threshold value, defined as the 25th percentile of the TCE10 distribution over the CH population. Results indicate that the ASAMI population was characterized by lower TCE10 values than the CH population (X: 93.9 +/- 5.9% vs. 98.2 +/- 1.2%; Y: 95.2 +/- 4.5% vs. 97.8 +/- 1.4%; Z: 97.4 +/- 1.6% vs. 99.1 +/- 1.5%; VMS: 95.7 +/- 2.8% vs. 97.9 +/- 1.3%; P<0.01). Moreover, the ASAMI patients were discriminated from the CH subjects with a lead-independent specificity of 74% and a lead-dependent sensitivity of 78%, 61%, 87% and 57% for lead X, Y, Z and VMS, respectively. In conclusion, compared to the CH subjects, the ASAMI patients show increased high-frequency spectral energy and were discriminated from the former with satisfactory values of sensibility and specificity.
2012
978-1-4673-2074-0
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/80580
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact