| Paper: | BIO-P1.8 | ||
| Session: | Biomedical Signal Processing I | ||
| Time: | Tuesday, May 16, 10:30 - 12:30 | ||
| Presentation: | Poster | ||
| Topic: | Bio Imaging and Signal Processing: Biomedical signal processing | ||
| Title: | FREQUENCY AND TIME-FREQUENCY BASED INDICES FOR SUCTION DETECTION IN ROTARY BLOOD PUMPS | ||
| Authors: | Antonio Ferreira, Marwan A. Simaan, J. Robert Boston, University of Pittsburgh, United States; James F. Antaki, Carnegie Mellon University, United States | ||
| Abstract: | A new suction detection system for rotary blood pumps used in Left Ventricular Assist Devices is presented. The system is based on frequency indices combined with a time-frequency extraction feature algorithm. The frequency based indices can detect the changes in the harmonic and subharmonic energy content of the pump flow signal, when a suction event is occurring. The time-frequency extraction feature algorithm can track variations in the standard deviation of the instantaneous frequency of that signal. These two pieces of information are then combined in a weighted decision system to generate a suction alarm. The proposed system has been tested in simulations, in a mock-loop system, and in-vivo tests and produced very satisfactory results. | ||
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