title: A mobile phone-based ECG monitoring system.
abstract: We have developed a telemedicine system for monitoring a patient's electrocardiogram during daily activities. The recording system consists of three ECG chest electrodes, a variable gain instrumentation amplifier, a low power 8-bit single-chip microcomputer, a 256 KB EEPROM and a 2.4 GHz low transmitting power mobile phone (PHS). The complete system is mounted on a single, lightweight, chest electrode array. When a heart discomfort is felt, the patient pushes the data transmission switch on the recording system. The system sends the recorded ECG waveforms of the two prior minutes and ECG waveforms of the two minutes after the switch is pressed, directly in the hospital server computer via the PHS. The server computer sends the data to the physician on call. The data is displayed on the doctor's Java mobile phone LCD (Liquid Crystal Display), so he or she can monitor the ECG regardless of their location. The developed ECG monitoring system is not only applicable to at-home patients, but should also be useful for monitoring hospital patients.
authors.affiliation: Dept. of Electronics, Hiroshima Inst. of Technology, Hiroshima 731-5193, Japan.
authors.forename: Junichi
authors.initials: J
authors.lastname: Iwamoto
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Yonezawa
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Maki
authors.forename: Hidekuni
authors.initials: H
authors.lastname: Ogawa
authors.forename: Ishio
authors.initials: I
authors.lastname: Ninomiya
authors.forename: Kouji
authors.initials: K
authors.lastname: Sada
authors.forename: Shingo
authors.initials: S
authors.lastname: Hamada
authors.forename: Allen W
authors.initials: AW
authors.lastname: Hahn
authors.forename: W Morton
authors.initials: WM
authors.lastname: Caldwell
mesh_terms: D000669:Amplifiers, Electronic; D040421:Cell Phone; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D016247:Information Storage and Retrieval / Q000379:methods*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D017216:Telemedicine / Q000295:instrumentation* / Q000379:methods; D014584:User-Computer Interface