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E-healthcare at an experimental welfare techno house in Japan.

Tamura T, Kawarada A, Nambu M, Tsukada A, Sasaki K, Yamakoshi K - Open Med Inform J (2007)

Bottom Line: An automated monitoring system for home health care has been designed for an experimental house in Japan called the Welfare Techno House (WTH).Automated electrocardiogram (ECG) measurements can be taken while in bed, in the bathtub, and on the toilet, without the subject's awareness, and without using body surface electrodes.In order to evaluate this automated health monitoring system, overnight measurements were performed to monitor health status during the daily lives of both young and elderly subjects.

View Article: PubMed Central - PubMed

Affiliation: Chiba University, Japan.

ABSTRACT
An automated monitoring system for home health care has been designed for an experimental house in Japan called the Welfare Techno House (WTH). Automated electrocardiogram (ECG) measurements can be taken while in bed, in the bathtub, and on the toilet, without the subject's awareness, and without using body surface electrodes. In order to evaluate this automated health monitoring system, overnight measurements were performed to monitor health status during the daily lives of both young and elderly subjects.

No MeSH data available.


Bathtub monitoring system.
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Figure 4: Bathtub monitoring system.

Mentions: ECGs were also taken during bathing [4,5]. Silver/silver chloride electrodes were installed on the inside wall of the bathtub (Fig. 4) to take ECG recordings through the water. The ECG signal amplitude depends on the conductivity of the water. If the water conductivity is high, the water makes a short circuit to the body as a voltage source, and consequently the amplitude is reduced. By contrast, if the water conductivity is low, signal amplitude remains at levels to similar to those of the skin surface. However, a high-impedance amplifier should be used because of the higher resistance of the water; thus, the recording system becomes more vulnerable to electromagnetic interference. Fortunately, the electric conductivity of ordinary tap water, which is in the order of 10-2 S m-1, is within an acceptable range of measurement using a conventional amplifier. When subjects entered the tub, large artifacts appeared because of the movement of water near the electrodes and the body surface, but the baseline quickly stabilized, and stable ECGs were then obtained throughout the duration of the stay in the tub.


E-healthcare at an experimental welfare techno house in Japan.

Tamura T, Kawarada A, Nambu M, Tsukada A, Sasaki K, Yamakoshi K - Open Med Inform J (2007)

Bathtub monitoring system.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2666468&req=5

Figure 4: Bathtub monitoring system.
Mentions: ECGs were also taken during bathing [4,5]. Silver/silver chloride electrodes were installed on the inside wall of the bathtub (Fig. 4) to take ECG recordings through the water. The ECG signal amplitude depends on the conductivity of the water. If the water conductivity is high, the water makes a short circuit to the body as a voltage source, and consequently the amplitude is reduced. By contrast, if the water conductivity is low, signal amplitude remains at levels to similar to those of the skin surface. However, a high-impedance amplifier should be used because of the higher resistance of the water; thus, the recording system becomes more vulnerable to electromagnetic interference. Fortunately, the electric conductivity of ordinary tap water, which is in the order of 10-2 S m-1, is within an acceptable range of measurement using a conventional amplifier. When subjects entered the tub, large artifacts appeared because of the movement of water near the electrodes and the body surface, but the baseline quickly stabilized, and stable ECGs were then obtained throughout the duration of the stay in the tub.

Bottom Line: An automated monitoring system for home health care has been designed for an experimental house in Japan called the Welfare Techno House (WTH).Automated electrocardiogram (ECG) measurements can be taken while in bed, in the bathtub, and on the toilet, without the subject's awareness, and without using body surface electrodes.In order to evaluate this automated health monitoring system, overnight measurements were performed to monitor health status during the daily lives of both young and elderly subjects.

View Article: PubMed Central - PubMed

Affiliation: Chiba University, Japan.

ABSTRACT
An automated monitoring system for home health care has been designed for an experimental house in Japan called the Welfare Techno House (WTH). Automated electrocardiogram (ECG) measurements can be taken while in bed, in the bathtub, and on the toilet, without the subject's awareness, and without using body surface electrodes. In order to evaluate this automated health monitoring system, overnight measurements were performed to monitor health status during the daily lives of both young and elderly subjects.

No MeSH data available.