The HP Sonos 5500 provided by National MD is the prime example of top quality ECG machines available on today’s market. Designed with ten different specifications of transducers (including but not limited to HP Philips>11-3L- 3-11 MHz- Vascular/small parts Trapezoidal Linear Array and HP Philips>S4 – 2-4 MHz – Adult cardiac (21330A)) the HP Sonos 5500 gives physicians the reliability and accuracy needed in their medical procedures. The unit includes color Doppler in addition to PW Doppler and CW Doppler and provides physicians with a clear and precise image guaranteed every time. Click “Get a Quote” to get pricing information about any of our products. If you have any questions, contact us today.