Home Articles Downloads Forum Products Services EBME Expo Contact
Previous Thread
Next Thread
Print Thread
Rate Thread
#55710 04/04/11 10:08 AM
Joined: Jan 2005
Posts: 69
Scholar
OP Offline
Scholar
Joined: Jan 2005
Posts: 69
We have a number of Spacelabs Cardio Call Memo instant ECG recorders. One, less than 12 months old has been back to Spacelabs twice for re-programming and SpaceLabs have suggested it may becoming corrupted due to mobile phone interference. I have spoken to them regarding this and am told it is being investigated. I wondered if anyone else had come across this issue?

The clinicians tell me the transmission of the recording is done via a landline not a mobile phone.

Mick


I was looking back to see if she was looking back to see if I was looking back at her!
Joined: Jun 2009
Posts: 796
Likes: 13
Philosopher
Offline
Philosopher
Joined: Jun 2009
Posts: 796
Likes: 13
Ah yes, the ol' mobile phone, taxi transmitter, CB radio user excuse. Cobblers !

I have, over the last many many years had this type of excuse put forward for many problems involving RF/remote comms.

One of the things that needs to be remembered is that, once something is digitized it is actually very difficult to break that code up. There are things called "check sums" (and probably other things that have happened since I 'were a lad") that check the integrity of the data and if not correct then the system asks the other end to retransmit (this applies not just to IP systems but to digital comms in general).

What you have here, I suspect, is a problem that they cannot explain and are looking for an external "reason". Back to base principles I'm afraid.

Last edited by DaveC in Oz; 04/04/11 11:27 AM.

Thoughts and information provided on this forum are mine and mine alone and do not necessarily reflect the policy of NSW Health. They may also be complete bollocks!!
Joined: Jan 2005
Posts: 69
Scholar
OP Offline
Scholar
Joined: Jan 2005
Posts: 69
Hi Dave

Thanks for your reply.

I agree with your theory, but really as Spacelabs are already investigating this problem it would appear that more than us are affected. So I wondered who and in what circumstances.

Mick


I was looking back to see if she was looking back to see if I was looking back at her!
Joined: Jun 2009
Posts: 796
Likes: 13
Philosopher
Offline
Philosopher
Joined: Jun 2009
Posts: 796
Likes: 13
It is good that they are investigating and if they come up with anything I hope you will post the results here for all to see. So folks, anyone else have the same issue?


Thoughts and information provided on this forum are mine and mine alone and do not necessarily reflect the policy of NSW Health. They may also be complete bollocks!!
Joined: Feb 2004
Posts: 14,676
Likes: 63
Super Hero
Offline
Super Hero
Joined: Feb 2004
Posts: 14,676
Likes: 63

Ambulatory event recorders? Doesn't the data get transmitted first to a "base station" and then on again from there if need be (to storage, telephone line, whatever)?

If it is only one of a number of units that is always playing up, then logic surely dictates a problem with that unit. Or, more likely, I would have thought, the circumstances surrounding that unit (the environment it lives in, for example).

How (what technology) does the thing use? What distances are involved? Could the operating frequency be anywhere near that of the microwave oven, etc.?

What is the nature of the actual problem, I wonder? Corrupted memory or simply a poor ECG recording? Could it just be the electrodes? More information needed! smile


If you don't inspect ... don't expect.
Joined: Jan 2005
Posts: 69
Scholar
OP Offline
Scholar
Joined: Jan 2005
Posts: 69
Hi Geoff

It is a recorder the patient places over the heart and presses a button to record an event or perceived event. The problem presented was the unit's LED's flashed accompanied by a continuos tone. Spacelabs re-program the EPROM.

Mick


I was looking back to see if she was looking back to see if I was looking back at her!
Joined: Feb 2004
Posts: 14,676
Likes: 63
Super Hero
Offline
Super Hero
Joined: Feb 2004
Posts: 14,676
Likes: 63

LED's flashing and irritating noises to indicate a fault, I presume. smile

I wonder what actually triggers that condition. My own guess would be nothing at all to do with EPROM's (why should it become corrupted?) ... and more likely something else. Like "event not accepted" for some reason or another.

Or, much more likely perhaps ... a duff battery (or contacts)! whistle

Am I right in assuming that the patient is "out" somewhere (away from the hospital), at home perhaps?

Meanwhile, have you been able to take a close look at the thing yourself?


If you don't inspect ... don't expect.
Joined: Jan 2005
Posts: 69
Scholar
OP Offline
Scholar
Joined: Jan 2005
Posts: 69
Geoff

The monitor is still under warranty and has been returned for a second time for the same fault. The manufacturer have re-programmed the EPROM and that seems to rectify the fault. Being a diligent sort, I have enquired as to the likely cause of this fault and have been told it may be due to mobile phone interference. This is only a theory and is currently being investigated.

As I said above my question is has anyone else had the same trouble. If it is a major problem then we all need to know. If the problem, however unlikely is mobile phone/microwave/wireless internet/comic relief/royal wedding (delete as appropriate) related then Space Labs need to address the problem with some urgency.

The device is indeed used in the community.

Mick


I was looking back to see if she was looking back to see if I was looking back at her!
Joined: Feb 2004
Posts: 14,676
Likes: 63
Super Hero
Offline
Super Hero
Joined: Feb 2004
Posts: 14,676
Likes: 63

Fair enough. And I suppose that the patient is currently using another unit of the same type. So we now await the next "event" (or, in this case, and as we all hope - "non-event")!

Meanwhile, I agree:- how about suggesting that someone (from Spacelabs, perhaps) visits the patient in order to survey the immediate environment? Who knows, the patient could be a radio ham or some such thing! smile


If you don't inspect ... don't expect.

Moderated by  DaveC in Oz, RoJo 

Link Copied to Clipboard
Who's Online Now
0 members (), 418 guests, and 292 robots.
Key: Admin, Global Mod, Mod
Newest Members
diodoled, Al BMET, Eng_VPG, Graham Oliver, Jawad
10,188 Registered Users
Forum Statistics
Forums25
Topics11,073
Posts73,785
Members10,188
Most Online5,980
Jan 29th, 2020
Powered by UBB.threads™ PHP Forum Software 7.7.5