Tell them to try and stay away from coffee. I know a couple of people who have heart problems if they have had coffee during the day. Gordon Williams ----- Original Message ----- From: "David Duffy (AVD)" To: "Microcontroller discussion list - Public." Sent: Thursday, November 05, 2009 4:13 PM Subject: Re: [EE] Heart beat logger > Apptech wrote: > >> Has anyone here built a heart beat logger? I'm wanting to log each beat, > >> not the average rate. > >> > >> It would be worn by the user while sleeping. Wireless would be ideal, > >> but tethered is not out of the question. > >> > > > > For interest - what is the reason? > > > > Hi Russell, > Someone I know has an ongoing issue (last few years) of an occasional > feeling of racing heart, accompanied by feeling "odd / shaky" at that > moment. Almost always while sleeping (it wakes them up), but it has > occurred while awake a few times. > > They have tried wearing a 24 hour heart monitor (on loan from hospital), > but Murphy's Law has always meant that the symptom has never occurred > when the monitor was present. > > In a given month, the effect may happen 0 - 8 times, seemingly with no > pattern. Various doctors and specialists are yet to figure out what is > going on. > > Since the episodes are fairly brief and hard to capture, there is > uncertainty on whether the heart is doing weird stuff, or it just feels > that way. > > The logger idea was to try to record heart beat data over extended > periods for review if an episode had occurred. Hopefully this data may > help doctors get further down the path to a solution. > David... > > -- > ___________________________________________ > David Duffy Audio Visual Devices P/L > Unit 8, 10 Hook St, Capalaba 4157 Australia > Ph: +61 7 38235717 Fax: +61 7 38234717 > Our Web Site: www.audiovisualdevices.com.au > ___________________________________________ > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist