CAE Athena - Central Venous Pressure (CVP); Pulmonary Artery Pressure (PAP); Pulmonary Capillary Wedge Pressure (PCWP)

Müse Parameter Descriptions
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PN: 905K520652 v2.8
Central Venous Pressure (CVP)
The CVP parameter is used to set the CVP baseline and atrial contraction amplitude to fixed numeric
values, thereby overriding the physiologic modeling for central venous pressure. Once set,
intravascular volume changes have no effect on the CVP. In addition, once an override is applied,
changes in tidal volume have no effect on the CVP waveform with the exception of an apneic patient
where the minimum and maximum would be the same value since there is no inspiration or
expiration. Depending on the volume status of the patient, the minimum/maximum value can be
shifted up or down.
The available CVP controls are as follows:
• Minimum Diastolic: Baseline of the CVP at the end of an inspiration
• Maximum Diastolic: Baseline of the CVP at the end of an exhalation
• Pulse Amplitude: Size of the CVP wave during atrial contraction
For the override to take effect, the Central Venous Catheter must be set to the Intrathoracic Vein.
For example, with the minimum diastolic set to 5 mmHg, maximum diastolic set to 15 mmHg and
pulse amplitude set to 2 mmHg, the CVP baseline is 15 mmHg, dipping to 5 mmHg with each
inhalation, and the amplitude of the wave is 2 mmHg with each atrial contraction. The CVP baseline
remains the same even in the event of intravascular volume changes and the depth of each dip due
to inhalation remains at 5 mmHg even in the event of tidal volume changes. However, if the
respiratory rate increases or decreases, the frequency of the dips will show a corresponding increase
or decrease.
Default: Modeled
Range: Minimum Diastolic -10 mmHg – 25 mmHg
Maximum Diastolic -10 mmHg – 25 mmHg
Pulse Amplitude 0 mmHg – 50 mmHg
Pulmonary Artery Pressure (PAP)
The PAP parameter is used to override the physiological modeling for pulmonary artery pressure.
The systolic and diastolic pressures can both be set to fixed numeric values, regardless of
interventions performed. Resetting the parameter to Modeled returns control of the underlying
pulmonary artery pressure to the physiological models.
Default: Modeled
Range: Systolic 0 mmHg - 50 mmHg
Diastolic 0 mmHg - 50 mmHg
Pulmonary Capillary Wedge Pressure (PCWP)
The PCWP parameter is used to display the patient's pulmonary capillary wedge pressure. It is used
to simulate the pressure as measured by wedging a pulmonary catheter with an inflated balloon into
a small pulmonary arterial branch.
Default: Modeled
Range: -10 mmHg - 100 mmHg