New Citations | BIOPAC in Bioimpedance Research

Bioimpedance is a measure of the body’s ability to impede electrical current and can be used to provide researchers with insight on a range of physiological conditions. Here are some recent studies that used BIOPAC systems and demonstrate the information gained through measuring bioimpedance…
hands holding coffee mug

How Long Is Long Enough? Controlling for Acute Caffeine Intake in Cardiovascular Research. Brain Sciences13(2), 224. Grant, S. S., Kim, K., & Friedman, B. H. (2023).

This study hypothesized that the effects of caffeine on heart reactivity, specifically in coffee, would wear off after six hours. Researchers had participants perform hand cold pressor and memory tasks before having coffee, thirty minutes after having coffee, and six hours (caffeine’s average half-life) after having coffee. They utilized a BIOPAC respiratory effort transducer belt, noninvasive blood pressure system, and electrobioimpedance amplifier to record their data.

Spontaneous Swallowing Frequency in Post-Stroke Patients with and Without Oropharyngeal Dysphagia: An Observational StudyDysphagia38(1), 200-210. Alvarez-Larruy, M., Tomsen, N., Guanyabens, N., Palomeras, E., Clavé, P., & Nascimento, W. (2023).

Researchers compared spontaneous swallowing frequency (SSF), salivary substance P (SP) concentration, hydration, and nutrition in post-stroke patients with and without oropharyngeal dysphagia (OP). OP has been found to increase morbidity and mortality rates in post-stroke patients, so this study aimed to find a correlation between these measures to be able to identify OP early. All of these recordings were analyzed using AcqKnowledge software.

A Piglet Perinatal Asphyxia Model to Study Cardiac Injury and Hemodynamics after Cardiac Arrest, Resuscitation, and the Return of Spontaneous CirculationJoVE (Journal of Visualized Experiments), (191), e64788. Stenersen, E. O., Olsen, A., Melheim, M., Solberg, R., Dannevig, I., Schmölzer, G., Cheung, P., Nakstad, B., Saugstad, O.D., Rønnestad, A., & Solevåg, A. L. (2023).

This study researched the effects of perinatal asphyxia on cardiopulmonary resuscitation. Piglets were used due to their anatomical similarity to human neonates, which allows for neonatal resuscitation. Perinatal asphyxia is a common complication at birth and the goal of this study was to evaluate ways to lower mortality rates in such cases. BIOPAC’s electrocardiogram amplifier was used to record ECG of the subjects throughout the experiment.

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