Development and Evaluation of Heart Rate Monitor at Bathtub

Takumi Yoshimura; Kazuki Nakajima; Hidetoshi Miike; Toshiyo Tamura; Tatsuo Togawa

doi:10.11239/jsmbe1963.32.246

Development and Evaluation of Heart Rate Monitor at Bathtub

Takumi Yoshimura, Kazuki Nakajima, Hidetoshi Miike, Toshiyo Tamura, Tatsuo Togawa

Electric and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

An unconstrained ECG and heart rate monitor is designed using ECG measured at bathtub. The apparatus is consisted of an analog and a digital parts. In the analog part the ECG wave from electrodes which are fixed inside bathtub is amplified approximately 4000 times. In the digital part the heart rates are calculated from the R-R interval of ECG pulse and the calculated data are stored in random access memory. The stored data in this apparatus are transferred to a personal computer by the RS-232C interface and analyzed by the personal computer. The heart rates obtained from bathtub ECG agreed with those obtained from body surface ECG. In measurement of bathing water with several concentrations of sodium chloride solution, the amplitude of ECG wave form decreased as an increase of electrical conductivity. Using this apparatus the heart rate can be obtained easily and noninvasively. Thus this developed monitor can be used as a home health monitor.

Original language	English
Pages (from-to)	246-253
Number of pages	8
Journal	Japanese journal of medical electronics and biological engineering
Volume	32
Issue number	4
DOIs	https://doi.org/10.11239/jsmbe1963.32.246
State	Published - 1994

ASJC Scopus subject areas

Biomedical Engineering

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10.11239/jsmbe1963.32.246

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title = "Development and Evaluation of Heart Rate Monitor at Bathtub",

abstract = "An unconstrained ECG and heart rate monitor is designed using ECG measured at bathtub. The apparatus is consisted of an analog and a digital parts. In the analog part the ECG wave from electrodes which are fixed inside bathtub is amplified approximately 4000 times. In the digital part the heart rates are calculated from the R-R interval of ECG pulse and the calculated data are stored in random access memory. The stored data in this apparatus are transferred to a personal computer by the RS-232C interface and analyzed by the personal computer. The heart rates obtained from bathtub ECG agreed with those obtained from body surface ECG. In measurement of bathing water with several concentrations of sodium chloride solution, the amplitude of ECG wave form decreased as an increase of electrical conductivity. Using this apparatus the heart rate can be obtained easily and noninvasively. Thus this developed monitor can be used as a home health monitor.",

author = "Takumi Yoshimura and Kazuki Nakajima and Hidetoshi Miike and Toshiyo Tamura and Tatsuo Togawa",

year = "1994",

doi = "10.11239/jsmbe1963.32.246",

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journal = "Japanese journal of medical electronics and biological engineering",

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T1 - Development and Evaluation of Heart Rate Monitor at Bathtub

AU - Yoshimura, Takumi

AU - Nakajima, Kazuki

AU - Miike, Hidetoshi

AU - Tamura, Toshiyo

AU - Togawa, Tatsuo

PY - 1994

Y1 - 1994

N2 - An unconstrained ECG and heart rate monitor is designed using ECG measured at bathtub. The apparatus is consisted of an analog and a digital parts. In the analog part the ECG wave from electrodes which are fixed inside bathtub is amplified approximately 4000 times. In the digital part the heart rates are calculated from the R-R interval of ECG pulse and the calculated data are stored in random access memory. The stored data in this apparatus are transferred to a personal computer by the RS-232C interface and analyzed by the personal computer. The heart rates obtained from bathtub ECG agreed with those obtained from body surface ECG. In measurement of bathing water with several concentrations of sodium chloride solution, the amplitude of ECG wave form decreased as an increase of electrical conductivity. Using this apparatus the heart rate can be obtained easily and noninvasively. Thus this developed monitor can be used as a home health monitor.

AB - An unconstrained ECG and heart rate monitor is designed using ECG measured at bathtub. The apparatus is consisted of an analog and a digital parts. In the analog part the ECG wave from electrodes which are fixed inside bathtub is amplified approximately 4000 times. In the digital part the heart rates are calculated from the R-R interval of ECG pulse and the calculated data are stored in random access memory. The stored data in this apparatus are transferred to a personal computer by the RS-232C interface and analyzed by the personal computer. The heart rates obtained from bathtub ECG agreed with those obtained from body surface ECG. In measurement of bathing water with several concentrations of sodium chloride solution, the amplitude of ECG wave form decreased as an increase of electrical conductivity. Using this apparatus the heart rate can be obtained easily and noninvasively. Thus this developed monitor can be used as a home health monitor.

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Development and Evaluation of Heart Rate Monitor at Bathtub

Abstract

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