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Millar's MPress
software provides a comprehensive analysis of
single and dual pressure data. The easy-to-use
program reads data files of text tab delimited
format generated by ADInstruments PowerLab or
other similar data acquisition systems.
The data is presented in a
clean, readable format complete with data
analysis graphs, hemodynamic summary, and
pressure vs. dP/dt loops. The results can be
saved in text format for easy export to a
spreadsheet or word processor software program.
MPress opens the
text files generated by the data acquisition
software and applies a variety of algorithms to
the pressure data to calculate the following
hemodynamic parameters:
|
Parameters Calculated by MPress
Software |
|
Ventricular Parameters |
Arterial
Parameters |
| HR |
Heart
Rate |
HR |
Heart
Rate |
| Pmax |
Maximum Pressure |
Pmax |
Maximum Pressure |
| Pmin |
Minimum Pressure |
Pmin |
Minimum Pressure |
| Ped |
End-Diastolic
Pressure |
Ped |
End-Diastolic
Pressure |
| dP/dt max |
Maximum dP/dt |
dP/dt max |
Maximum dP/dt |
| dP/dt min |
Minimum dP/dt |
dP/dt min |
Minimum dP/dt |
| P@dP/dt max |
Pressure at dP/dt Max |
P@dP/dt max |
Pressure at dP/dt Max |
| P@dV/dt max |
Pressure at dV/dt Max |
P@dV/dt max |
Pressure at dV/dt Max |
| Max/Min delta |
Max-Min Pressure
|
Max/Min delta |
Max-Min Pressure
|
| Contractility Index
|
Contractility Index
|
Contractility Index
|
Contractility Index
|
| Systolic Duration
|
Systolic time
duration |
Systolic Duration
|
Systolic time
duration |
| Diastolic Duration
|
Diastolic time
duration |
Diastolic Duration
|
Diastolic time
duration |
| Cycle Duration |
Cycle Duration |
Cycle Duration |
Cycle Duration |
| Relaxation Index
|
Relaxation Index
|
Relaxation Index
|
Relaxation Index
|
| Tau (Weiss) |
Relaxation constant |
Tau (Weiss) |
Relaxation constant |
| Tau (Glantz) |
Relaxation constant
|
Tau (Glantz) |
Relaxation constant
|
| |
|
MAP |
Mean Arterial
Pressure |
| |
|
Notch Pressure |
Dicrotic Notch
Pressure |
MPress Main Menu
MPress contains an
intuitive user menu that offers easy access to a
variety of displays and calculation tables for
several cardiovascular parameters.
Hemodynamic Summary
The hemodynamic summary for
ventricular pressure is displayed below. These
parameters are calculated for each cycle. A
linear regression can be performed using any two
parameters.
Pressure vs. dP/dt Loop
MPress had the
ability to display pressure vs. dP/dt loops as
shown in the snapshot below.
Data
may be easily exported to spreadsheets or text
files, and graphical information can be placed
into presentations or papers for publication.
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