Advanced Hemodynamics (HD) Software
Our Advanced Hemodynamics (HD) software application enables relevant hemodynamic parameters on the Finapres® NOVA. This HD application gives more insight in various cardiovascular parameters, supporting health care professionals and researchers in studying and diagnosing their patients. It uses a statistical model of the human circulation to calculate the hemodynamic parameters from the finger arterial pressure waveform .
This algorithm computes the aortic flow waveform by simulating a non-linear three-element model of aortic input impedance . The aortic impedance is modelled based on the age, length, weight and gender of the patient, while the systemic vascular resistance is predicted from the mean pressure and model mean flow. This so-called Modelflow® algorithm was developed in the ‘90s by Wesseling et al. and is widely validated [2-5].
- Non-invasive beat-to-beat hemodynamic parameters such as Cardiac Output and Stroke Volume
- Optimized for trending
- Absolute CO accuracy through calibration
- Cardiac Output (CO & CI)
- Stroke Volume (SV & SVI)
- Total Peripheral Resistance (TPR & TPRI)
- Cardiac contractility (dP / dt)
- Left Ventricular Ejection Time (LVET)
- Maximal surface of the aorta
- Rate pressure product (RPP)
- Model computation of the aortic flow waveform (mFlow)
- Systolic pressure time index (SPTI)
- Diastolic pressure time index (DPTI)
- DPTI/SPTI ratio
- Aortic Impedance (Zao)
- Windkessel Compliance (Cwk)
- Peripheral Resistance (Rp)
- Baroreceptor Sensitivity (BRS)
As an example of a potential application of the HD software, the image shows the immediate blood pressure (reBAP), heart rate, CO and SV response during a stand test recorded with the Finapres® NOVA.
First plot: reBAP signal. Second plot: CO and SV. Third plot: RR interval (requires ECG+resp configuration)