Astrocard® Polysystem-FS
Exercise stress testing system — Astrocard® Polysystem-FS
Polysystem-FS uses advanced computer processing methods for electrophysiological signals and provides extensive capabilities for analysis, graphical visualization and storage of acquired data, as well as study workflow automation.
Polysystem-FS is a universal electrocardiographic system for a range of functional and pharmacological tests, including exercise testing on different types of bicycle ergometers, treadmill testing, stress echocardiography, orthostatic testing and static exercise testing.
During a study, Polysystem-FS supports both modern wireless and conventional wired transmission of 12-lead ECG data. Wireless transmission uses digital radio communication and a compact 12-channel telemetry ECG recorder.
System configuration
12-channel ECG acquisition unit
The main module for ECG acquisition during functional testing.
Lead cable and electrodes
Lead cable, electrode set and interface board for data input.
Wireless 12-channel ECG unit
A compact telemetry unit for transmitting ECG data by radio.
Bicycle ergometer / treadmill
Equipment for controlled exercise stress testing.
SpO₂ sensor (optional)
Sensor for recording oxygen saturation during the study.
Fault-tolerant industrial computer
A specialized industrial PC for reliable long-term operation.
Medical-grade power supply
Supports compliance with electrical safety and radio-frequency interference requirements.
Windows Embedded operating system
A specialized operating system designed for reliable medical devices.
Central telemetry monitoring station
The system records and displays ECG data in 12 standard leads using conventional or wireless electrocardiographic modules. During a study, it automatically controls the workload according to the protocol selected by the user.
Users can also program custom study protocols. Digital signal processing, a dedicated QRS detection method, baseline-shift correction and selective averaging of sinus QRS-T complexes provide consistently high ECG recording quality by reducing baseline drift and noise. They also support accurate detection of ST-segment depression and elevation, including the generation of an "alarm" signal.
The system supports all generally accepted study protocols, and clinicians can also program custom protocols. During the study, it analyzes cardiac arrhythmias and ST-segment dynamics in real time.
During the study, the system can record and analyze ventricular late potentials (optional), heart rate variability and microvolt T-wave alternans. The complete study is stored in the database and can also be saved to CD, DVD or USB flash media.
The system can record and analyze SpO2 throughout the study (optional)
When a bicycle ergometer is used, BP can be measured automatically during the study
ECG data can be printed during the study without interrupting monitoring
Polysystem-FS stores the complete study on the hard drive
Data analysis mode
After the study, the system automatically analyzes the acquired data and generates a text summary, a detailed narrative study report and trends showing changes in the main parameters throughout the study.
Users can manually add data that cannot be processed automatically and enter the final conclusion. In addition to automatic processing, any section of the 12-channel ECG recording can be reviewed visually and measured manually.
For convenient assessment of cardiac arrhythmias, the system provides a compressed single-lead ECG view (full disclosure report).
System settings
The study planning system lets users select an existing workload protocol or create a custom protocol.
Users can set permitted limits for changes in physiological parameters monitored during the study, as well as ST-segment depression and elevation criteria for the "alarm" signal. This allows the study program to be adapted to the individual patient or the specific purpose of the study.
