Models designed to infer stroke volumes based on changes in thoracic impedance rely on many simplifying assumptions. These assumptions are not universally valid. Consequently the relationship between measured impedances and the absolute amount of blood moving into and out of the heart is not adequately characterized. For more background, see references cited in “What types of electrode should I use?”. AcqKnowledge offers different models via “Analysis > Impedance Cardiography > Preferences…”. The “Stroke Volume methods” are not proprietary; they have been taken from the ICG literature. If you would like to utilize a different model, please contact support to suggest that model be incorporated as an alternative, or, if needed, ask for help implementing it in current software.
Continuous…Easy to use…Reproducible & Validated The NIBP100D-HD noninvasive blood pressure system provides a continuous, beat-to-beat, blood pressure signal recorded from the fingers of a subject. Simple and noninvasive—finger sensor provides accurate & immediate feedback: arterial BP, cardiac output, fluid and hemodynamic status. Measure noninvasive BP parameters (BP, sBP, dBP, mBP, and PR) plus hemodynamic parameters (PPV, […]
February 14, 2019 BIOPAC Systems, Inc. Goleta, CA USA New “Smart Amplifiers” make it easier than ever for life science researchers to get great data Fast Setup & High Performance Smart Amplifiers improve performance by amplifying the physiological signal close to the subject, which allows a high-level voltage connection to the data acquisition system and reduces noise artifact. […]
BIOPAC provides software and hardware that allows research teams to record and analyze numerous body signals for physiological experimentation. Here are a few notable studies using BIOPAC equipment that cover Respiration, EEG, and Neuromarketing. Breathe Easy In this study, a mathematician from Simpson College uses her skills and students’ respiratory studies conducted with Biopac Student Lab equipment (BSL […]