Quantitative detection of eryptosis in human erythrocytes using tunable resistive pulse sensing and annexin-V-beads.

Toxicological assessments of human red blood cells (RBCs) are important in human health because RBCs are the most abundant cell type in our body. Erythrotoxicology testing guidelines using hemolysis have been established as a standard (e.g.

Myocardial contractility: a seismocardiography approach.

Features are extracted from seismocardiogram data to correlate with two indexes of myocardial contractility: dP/dt(max) (maximum first derivative of left ventricular pressure) and stroke volume. In the first study on three pigs, it is shown that the time period between the R peak of the ECG and the first peak of the SCG (R-AO period or pre-ejection period, PEP) correlated (r= -0.86) with dP/dt(max).

Infrasonic cardiac signals: complementary windows to cardiovascular dynamics.

New approaches to fairly old noninvasive cardiology tools, based on studying low frequency vibrations created by the heart on the body, were reviewed. These signals were divided and studied in two categories and compared in their capability for estimation of hemodynamic parameters. In particular one representative signal of each category, seismocardiogram and ultra-low frequency ballistocardiogram, were selected and compared to each other in their correspondence to physiological events behind their waves.

Comparative analysis of seismocardiogram waves with the ultra-low frequency ballistocardiogram.

Simultaneous seismocardiogram (SCG) and ultra-low frequency ballistocardiogram (BCG) signals are recorded. Preliminary results from the BCG helped tag which waves on the SCG are related to the rapid systolic ejection and aortic valve closure events. These results agreed with and further confirmed previous findings using the echocardiogram.