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Unfamiliar waveforms spanning from the ST to TP segments only observed in certain limb leads of the standard 12-lead electrocardiogram due to Aslanger’ s sign

引用

Journal of Geriatric Cardiology 2023年第9期20卷 693-696页

作者： Koji Takahashi Nobuhisa Yamamura Mako Yoshino Daijiro Enomoto Hiroe Morioka Shigeki Uemura Takafumi Okura tomoki sakaue Shuntaro Ikeda Department of Community Emergency Medicine Ehime University Graduate School of MedicineEhimeJapan Department of Cardiology Yawatahama City General HospitalEhimeJapan Department of Clinical Pathology Yawatahama City General HospitalEhimeJapan

Aslanger’s sign,also known as the arterial pulse tapping artifact or electromechanical association artifact,is an electrocardiographic artifact caused by arterial pulsation at the site where the limb leads of the standard 12-lead electrocardiogram near the radial or posterior tibial arteries are positioned,particularly in hyperdynamic states.[1–8]It occurs in every cardiac cycle with a constant coupling interval between the QRS complex and *** synchronization with the underlying heart rhythm makes it less likely to be recognized as an artifact compared to unsynchronized artifacts,such as those caused by limb movement and inadequate contact between the electrode and skin.[1,2,7,8]Almost all reported cases of Aslanger’s sign exhibit an unusual waveform morphology in all 12 leads except one of the standard 12-lead *** sign is often confused with an electrocardiographic finding commonly observed during acute coronary events.

关键词： electrocardiogram arterial likely

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Light chain cardiac amyloidosis in a nonagenarian

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Journal of Geriatric Cardiology 2022年第1期19卷 83-89页

作者： Koji Takahashi Mina Yamashita tomoki sakaue Daijiro Enomoto Shigeki Uemura Takafumi Okura Shuntaro Ikeda Takanori Senba Akira Saijo Nobuhisa Yamamura Sohei Kitazawa Department of Community Emergency Medicine Ehime University Graduate School of MedicineEhimeJapan Department of Cardiology Yawatahama City General HospitalEhimeJapan Department of Hematology Yawatahama City General HospitalEhimeJapan Department of Clinical Pathology Yawatahama City General HospitalEhimeJapan Department of Molecular Pathology Ehime University Graduate School of MedicineEhimeJapan

Cardiac amyloidosis is an infiltrative and restrictive cardiomyopathy caused by the extracellular deposition of amyloid fib-rils within the heart as systemic amyloidosis,lead-ing to heart failure,reduced quality of life,and death.[1]There are two major amyloid fibril proteins that af-fect the heart:amyloid immunoglobulin light chain(AL)and amyloid transthyretin(ATTR).The latter is further subdivided into wild-type ATTR and variant types based on the presence of a mutation in the transthyretin gene.

关键词： amyloid death. cardiomyopathy

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