Med Biol Eng Comput - Risk stratification of cardiac autonomic neuropathy based on multi-lag Tone-Entropy.

Tópicos

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Resumo

Cardiac autonomic neuropathy (CAN) is an irreversible condition affecting the autonomic nervous system, which leads to abnormal functioning of the visceral organs and affects critical body functions such as blood pressure, heart rate and kidney filtration. This study presents multi-lag Tone-Entropy (T-E) analysis of heart rate variability (HRV) at multiple lags as a screening tool for CAN. A total of 41 ECG recordings were acquired from diabetic subjects with definite CAN (CAN+) and without CAN (CAN-) and analyzed. Tone and entropy values of each patient were calculated for different beat sequence lengths (len: 50-900) and lags (m: 1-8). The CAN- group was found to have a lower mean tone value compared to that of CAN+ group for all m and len, whereas the mean entropy value was higher in CAN- than that in CAN+ group. Leave-one-out (LOO) cross-validation tests using a quadratic discriminant (QD) classifier were applied to investigate the performance of multi-lag T-E features. We obtained 100 % accuracy for tone and entropy with len = 250 and m = {2, 3} settings, which is better than the performance of T-E technique based on lag m = 1. The results demonstrate the usefulness of multi-lag T-E analysis over single lag analysis in CAN diagnosis for risk stratification and highlight the change in autonomic nervous system modulation of the heart rate associated with cardiac autonomic neuropathy.

Resumo Limpo

cardiac autonom neuropathi can irrevers condit affect autonom nervous system lead abnorm function viscer organ affect critic bodi function blood pressur heart rate kidney filtrat studi present multilag toneentropi te analysi heart rate variabl hrv multipl lag screen tool can total ecg record acquir diabet subject definit can can without can can analyz tone entropi valu patient calcul differ beat sequenc length len lag m can group found lower mean tone valu compar can group m len wherea mean entropi valu higher can can group leaveoneout loo crossvalid test use quadrat discrimin qd classifi appli investig perform multilag te featur obtain accuraci tone entropi len m set better perform te techniqu base lag m result demonstr use multilag te analysi singl lag analysi can diagnosi risk stratif highlight chang autonom nervous system modul heart rate associ cardiac autonom neuropathi

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