Measurement and analysis of carotid blood flow and ECG in cardiac

Dynamics of blood flow in vivo vary with cardiovascular disease. To examine dynamics change of blood flow is useful in the prevention of cardiovascular disease. This study is aimed to investigate the common carotid blood velocity (CCBV) in the cardiac patients. It was performed in 14 cardiac patient...

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Main Authors:	Katai, Mizuki, Noor Azmi, Azran Azhim, Kamiya, Tatsuaki, Akutagawa, Masatake, Hirao, Yuji, Yamaguchi, Hisao, Yoshizaki, Kazuo, Nomura, Masaharu, Obara, Shigeru, Tanaka, Hiroyuki, Kinouchi, Yohsuke
Format:	Conference or Workshop Item
Language:	English
Published:	Springer Berlin Heidelberg 2007
Subjects:	TP248.13 Biotechnology
Online Access:	http://irep.iium.edu.my/44125/ http://irep.iium.edu.my/44125/ http://irep.iium.edu.my/44125/ http://irep.iium.edu.my/44125/1/Measurement_and_Analysis_of_Carotid_Blood_Flow_and_ECG_in_Cardiac.pdf

id	iium-44125
recordtype	eprints
spelling	iium-441252015-08-17T03:33:05Z http://irep.iium.edu.my/44125/ Measurement and analysis of carotid blood flow and ECG in cardiac Katai, Mizuki Noor Azmi, Azran Azhim Kamiya, Tatsuaki Akutagawa, Masatake Hirao, Yuji Yamaguchi, Hisao Yoshizaki, Kazuo Nomura, Masaharu Obara, Shigeru Tanaka, Hiroyuki Kinouchi, Yohsuke TP248.13 Biotechnology Dynamics of blood flow in vivo vary with cardiovascular disease. To examine dynamics change of blood flow is useful in the prevention of cardiovascular disease. This study is aimed to investigate the common carotid blood velocity (CCBV) in the cardiac patients. It was performed in 14 cardiac patients (mean ± SD age 68.5 ± 8.3) and 8 healthy subjects as control (age 22.8 ± 1.6). The variations of CCBV were measured using a telemetry blood flow velocimeter system in real time display that was completely developed in our laboratory. This measurement system is based on continuous wave (CW) Doppler ultrasound using two transducers which one is for transmitting and the other one is for receiving. In the report, data were measured for 90 seconds at the rest sitting posture with synchronized measurement of electrocardiogram (ECG) signal. Electromechanical delay (Δt) between ECG signal and CCBV were measured from time of R-wave (Tr) to time of the peak systolic blood velocity (T1). The Δt was 0.169 ± 0.008 s in the healthy subjects. While, the Δt was 0.131 ± 0.016 s in the hypertensive. The delay decreased relatively in the hypertensive. It was coincided with decreases of the magnitude of the peak of diastolic velocities. Furthermore, an acceleration index (AI) and a peak systolic velocity (S1) had correlation in the cardiac patient. The value of AI and S1 decreased particularly. The results suggest that the Δt is affected by arterial properties that may be related to arteriosclerosis. Springer Berlin Heidelberg 2007 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/44125/1/Measurement_and_Analysis_of_Carotid_Blood_Flow_and_ECG_in_Cardiac.pdf Katai, Mizuki and Noor Azmi, Azran Azhim and Kamiya, Tatsuaki and Akutagawa, Masatake and Hirao, Yuji and Yamaguchi, Hisao and Yoshizaki, Kazuo and Nomura, Masaharu and Obara, Shigeru and Tanaka, Hiroyuki and Kinouchi, Yohsuke (2007) Measurement and analysis of carotid blood flow and ECG in cardiac. In: World Congress on Medical Physics and Biomedical Engineering 2006 - IFMBE Proceedings, August 27 – September 1, 2006, COEX Seoul, Korea. http://dx.doi.org/10.1007/978-3-540-36841-0_883 doi:10.1007/978-3-540-36841-0_883
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TP248.13 Biotechnology
spellingShingle	TP248.13 Biotechnology Katai, Mizuki Noor Azmi, Azran Azhim Kamiya, Tatsuaki Akutagawa, Masatake Hirao, Yuji Yamaguchi, Hisao Yoshizaki, Kazuo Nomura, Masaharu Obara, Shigeru Tanaka, Hiroyuki Kinouchi, Yohsuke Measurement and analysis of carotid blood flow and ECG in cardiac
description	Dynamics of blood flow in vivo vary with cardiovascular disease. To examine dynamics change of blood flow is useful in the prevention of cardiovascular disease. This study is aimed to investigate the common carotid blood velocity (CCBV) in the cardiac patients. It was performed in 14 cardiac patients (mean ± SD age 68.5 ± 8.3) and 8 healthy subjects as control (age 22.8 ± 1.6). The variations of CCBV were measured using a telemetry blood flow velocimeter system in real time display that was completely developed in our laboratory. This measurement system is based on continuous wave (CW) Doppler ultrasound using two transducers which one is for transmitting and the other one is for receiving. In the report, data were measured for 90 seconds at the rest sitting posture with synchronized measurement of electrocardiogram (ECG) signal. Electromechanical delay (Δt) between ECG signal and CCBV were measured from time of R-wave (Tr) to time of the peak systolic blood velocity (T1). The Δt was 0.169 ± 0.008 s in the healthy subjects. While, the Δt was 0.131 ± 0.016 s in the hypertensive. The delay decreased relatively in the hypertensive. It was coincided with decreases of the magnitude of the peak of diastolic velocities. Furthermore, an acceleration index (AI) and a peak systolic velocity (S1) had correlation in the cardiac patient. The value of AI and S1 decreased particularly. The results suggest that the Δt is affected by arterial properties that may be related to arteriosclerosis.
format	Conference or Workshop Item
author	Katai, Mizuki Noor Azmi, Azran Azhim Kamiya, Tatsuaki Akutagawa, Masatake Hirao, Yuji Yamaguchi, Hisao Yoshizaki, Kazuo Nomura, Masaharu Obara, Shigeru Tanaka, Hiroyuki Kinouchi, Yohsuke
author_facet	Katai, Mizuki Noor Azmi, Azran Azhim Kamiya, Tatsuaki Akutagawa, Masatake Hirao, Yuji Yamaguchi, Hisao Yoshizaki, Kazuo Nomura, Masaharu Obara, Shigeru Tanaka, Hiroyuki Kinouchi, Yohsuke
author_sort	Katai, Mizuki
title	Measurement and analysis of carotid blood flow and ECG in cardiac
title_short	Measurement and analysis of carotid blood flow and ECG in cardiac
title_full	Measurement and analysis of carotid blood flow and ECG in cardiac
title_fullStr	Measurement and analysis of carotid blood flow and ECG in cardiac
title_full_unstemmed	Measurement and analysis of carotid blood flow and ECG in cardiac
title_sort	measurement and analysis of carotid blood flow and ecg in cardiac
publisher	Springer Berlin Heidelberg
publishDate	2007
url	http://irep.iium.edu.my/44125/ http://irep.iium.edu.my/44125/ http://irep.iium.edu.my/44125/ http://irep.iium.edu.my/44125/1/Measurement_and_Analysis_of_Carotid_Blood_Flow_and_ECG_in_Cardiac.pdf
first_indexed	2023-09-18T21:02:46Z
last_indexed	2023-09-18T21:02:46Z
_version_	1777410733903970304

Measurement and analysis of carotid blood flow and ECG in cardiac

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