Research:
Pressure-Volume Systems: MPVS Ultra : PVAN Ultra
PVAN Ultra™ Data Analysis Software
Millar's PVAN Ultra software provides a powerful, easy-to-use method for investigators to calculate the hemodynamic parameters of the P-V data generated by the Millar Pressure Volume Systems.
PVAN Ultra opens the text files generated by the data acquisition software and applies a variety of algorithms to the P-V data to calculate over thirty different hemodynamic parameters.
| Parameters Calculated by PVAN Ultra Software |
| HR |
Heart Rate |
Ea |
Arterial Elastance |
dP/dt min |
Minimum dP/dt |
| Vmax |
Maximum Volume |
CO |
Cardiac Output |
dV/dt max |
Maximum dV/dt |
| Vmin |
Minimum Volume |
SW |
Stroke Work |
dV/dt min |
Minimum dV/dt |
| Ves |
End-Systolic Volume |
SV |
Stroke Volume |
P@dP/dt max |
Pressure at dP/dt Max |
| Ved |
End-Diastolic Volume |
EF |
Ejection Fraction |
P@dV/dt max |
Pressure at dV/dt Max |
| Pmax |
Maximum Pressure |
PRSW |
Preload Recruitable SW |
V@dP/dt max |
Volume at dP/dt Max |
| Pmin |
Minimum Pressure |
ESPVR |
End-Systolic P-V Relationship |
V@dP/dt min |
Volume at dP/dt Min |
| Pes |
End-Systolic Pressure |
EDPVR |
End-Diastolic P-V Relationship |
Tau (Weiss) |
Tau-Weiss Method |
| Ped |
End-Diastolic Pressure |
E(t) |
Time Varying Max. Elastance |
Tau (Glantz) |
Tau-Glantz Method |
| Ees |
End-Systolic Elastance |
dP/dt max |
Maximum dP/dt |
Tau (Logistic) |
Tau-Logistic Method |
The calculated hemodynamic parameters serve as indicators of cardiovascular performance in response to different interventions (genetic mutations, drugs, occlusions, etc.). PVAN Ultra offers the investigator the opportunity to convert data to units of true volume if the data are recorded RVUs (Relative Volume Units) or conductance units.
PVAN Ultra contains an intuitive user menu that offers easy access to a variety of displays and calculation tables for several cardiovascular parameters. A saline calibration feature allows the user to obtain a value for the parallel conductance volume contribution of the myocardium.
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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