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Heart Rhythm Scanner 3.0
Comprehensive Health Assessment system
In the USA for research and
educational purpose only |
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| Phone: |
(212)-222-5665 |
| E-mail: |
brotmanp@verizon.net |
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Frequently Asked Questions:
Is it possible to take a sequence of
5-minute data segments out of recorded test to do their
comparative HRV analysis?
The Heart Rhythm Scanner performs
testing based on specific protocols. Each protocol
consists of a number of tests of specific duration
(typically 5-minutes). So you can create a protocol
consisting of a sequence of 5-min tests and run them one
after another. They will be automatically analyzed and
compared in HRV report. If these segments must be
recorded as one continuous pool of data, the software
can run all tests without stops. Select 'View' menu
option and clear 'Trial Dialog' menu option to run all
tests without stops.
The software tells me that too much data is
accumulated in the database. Removing raw ECG data is
recommended. How can I do that? Can I do anything to
avoid deleting ECG data?
According to the standards of HRV
analysis it is essential to view ECG signal to do manual
editing of heart rate data calculated by the software to
remove all abnormal heartbeats. Once test data is edited
and accurate HRV data is obtained, it is OK to delete
respective ECG record. It can be done in HR editing
mode. When you select specific test trial from the list
for editing, you can remove ECG data by clicking
respective button in that dialog box. However this
deletion can be done only for each individual test trial
not in bulk. If you wash to keep large volume of ECG
recordings, you can do the following (however this
requires good knowledge of Windows file system and
principles of operations with files):
- Make sure that you do not need any data editing
for any of test records stored in the database.
- Open “My Computer” (on your desktop or through
Windows menu), then open “Local Disk (C:)”, then
“Program Files”, then “Biocom Technologies”, then
“Heart Rhythm Scanner” folder.
- Create new folder in there where you will archive
ECG data (e.g. “ECG Archive”).
- Rename HRVECG file (it is of MDB Type) to assign a
unique file name to it. We suggest adding date to the
name, e.g. “HRVECG 051306”.
- Move this renamed MDB file into archive folder. Do
not use Copy option, because it will not free up
database storage.
- When you start the software next time, new empty
HRVECG file will be automatically created and all new
ECG records will be stored in it.
At any time you
can swap ECG storage files between active and archive
folders to access old ECG records. Do not forget to
properly rename both files because the software can
access to ECG data only in HRVECG file located in
active working folder. These files cannot be copied or
moved to other copy of the software to access ECG data
there!
Why should I edit
heart rate data?
Although the software utilizes a
sophisticated algorithm of detecting abnormal heartbeats
or movement artifacts, it is recommended to verify the
results of this detection with the best “tool” – your
own eye. The software displays ECG or pulse wave signal
and marks all heartbeats automatically detected. All
normal heartbeats are marked with blue dots and abnormal
ones with red dots. If you notice any heartbeats looking
not normal but marked with blue, you can manually toggle
them to red and vice versa. At any time you can revert
any marker and recalculate HRV results to ensure highest
reliability of your data.
I'm using Biocom 3000 ECG unit with the
Heart Rhythm Scanner 2.0 for over a year. Until now it
worked just fine. Now I got an error message "unable to
initialize the device" or something like that. What
should I do?
This error message indicates that the
software is not able to communicate with the device for
any of the following reasons:
- Wrong software configuration;
- Software failure;
- USB port in your PC is not functioning;
- Very low battery level in the ECG unit;
- ECG unit is malfunctioning.
Case 1. The most typical
situation is that the Heart Rhythm Scanner is configured
to work with some other device rather than one being
connected. To check and fix this problem:
- Open the Heart Rhythm Scanner;
- Select the “View” menu option;
- Select the “Settings”;
- Select the “Options”;
- Make sure that the “Biocom 3000 ECG Unit” is
selected in the “Signal Source” group;
- Click OK to save this selection.
Case 2. Generally the
Heart Rhythm Scanner software is very stable and
functions well. However in very rare occasions it may
become not responsive to detect the device. Close the
software, reboot your PC and run the software again.
Case 3. To check if your USB
port is functioning, use any standard USB device like
mouse, keyboard, iPod, etc. that you normally connect to
your PC via USB port. If it does not function as it
should then try to use another USB port in your PC if
available.
Case 4. Replace a 9V
battery in your Biocom 3000 ECG unit and try to run the
system again.
Case 5. Biocom
3000 ECG unit is a device automatically recognized by
Windows as a human interface USB device. To check if
Windows “sees” it please unplug the device, make sure
your PC sound is turned on and plug the device back in.
If Windows recognizes it you will hear a typical “device
connect” beep sound. There will be no sound If Windows
does not recognize it at all. This would mean that the
device has a USB cable problem. Windows may throw a
message balloon in the notification area (bottom right
corner of the desktop screen) indicating that the device
is not recognized. This would mean it is malfunctioning.
However even if Windows recognizes the ECG unit, it
could still be not properly used by the Heart Rhythm
Scanner throwing that "unable to initialize the device"
error message. This would mean that the device is not
functional and needs repair. Our analysis indicates that
in most cases this happens due to a static electricity
shock fried its internal circuitry. So it would be wise
to take all standard precautions to minimize risk of
static discharge. It is also recommended to unplug the
device from the USB port immediately after finishing
your test recording.
What is the difference between the PPG and
ECG?
PPG (or photoplethysmograph) is a
physiological signal reflecting one’s pulse wave. It is
obtained with a special optical sensor. One part of the
sensor emits infrared light passing through soft tissues
of an earlobe or fingertip. The other part of the sensor
measures infrared light passing through the tissues. The
blood flowing through the lighted area absorbs certain
portion of the light. The more blood is flowing the more
light is absorbed. So the sensor generates a signal
showing fluctuations in infrared light caused by
fluctuations in blood flow due to pulsations in blood
vessels. This signal has a very distinctive waveform
that is easy to use to detect heartbeats and measure
heartbeat intervals.
ECG (or EKG or
electrocardiograph) is another type of physiological
signal reflecting one’s heart electrical activity. The
heart generates electrical impulses spreading across its
muscle tissue causing its well-organized contractions
(aka heartbeats). ECG signal is measured by an ECG
recording device with special electrodes placed on
wrists or chest around heart area. The ECG signal also
has a very distinctive waveform reflecting the process
of spreading an electrical impulse over the heart. This
signal can be easily processed to obtain heartbeat
intervals.
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Contact Information:
Allied Products/Biofeedback Instrument Corp.
255 W. 98th Street
New York, N.Y. 10025
Tel. (212) 222-5665 (5667 Fax)
Email: brotmanp@verizon.net
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