Each beat-to-beat tracing of intravascular central venous and pulmonary artery pressures was independently assessed by two senior investigators (SJ and JT, blinded for the response to volume challenge) to verify the absence of any spontaneous respiratory activity.
This can be explained by the fact that, in essence, the flagellar beat traces out a cone which, upon collision, aligns with a solid surface, so that the sperm's propulsion vector points into the boundary and the cells become effectively trapped at the surface (Kantsler et al., 2013).
Figure 1 depicts a representative tracing of beat-to-beat alterations in developed force (Fdev).
Two experimenters monitored the continuous analog HR tracing in beats per minute (bpm) that appeared on the PC screen, along with a display of its mean and standard deviation that was updated every 30 s, and on the paper printout of the cardiotocograph (paper speed = 2 cm/m).
Cassady materializes as a ready-made icon, conveniently tracing the bloodline from Beat to flower generation.
Freezing the arterial pressure tracing, and measuring systolic and diastolic pressures beat by beat to identify the maximum and minimum pulse pressure values over a single respiratory cycle is a real but time-consuming alternative to the automatic calculation of PPV.
R-R and QT intervals were measured blindly by two observers on the resting ECG tracing, using five consecutive beats on a lead V5.
RR and QT intervals were measured blindly by two observers on the resting electrocardiogram tracing, using five consecutive beats on lead V5.
Rapid update imaging with a single-heart-beat resolution is required and allows for tracing of an extracellular contrast agent passing through the right ventricle (RV), the left ventricle (LV) and the myocardium.
The dominant (peak and valley) aspect of the tracing is synchronized with the beating of the heart, and is usually called the alternating current (AC) component.
Thereafter, it was slowly pooled caudally until heart beat could be noticed on the esophageal pressure tracing.
