Systemic Blood Flow Analysis Module

The Systemic Blood Flow (SBF) Analysis Module computes physiologic parameters from systemic blood flow data. The analysis functions by applying a series of logical tests to the digitized flow signal and its first derivative using criteria selected by the user. The graph above represents a typical systemic blood flow recording and its first derivative as they would appear on the monitor. Automated validation marks for the Iso Flow Cycle are shown. The validation marks provide visual, real-time verification of the accuracy of the system.

The list below describes the parameters calculated by the analysis module either in real-time or during subsequent analysis.

Model PNM-SBF100W

Name		Definition
Num		The number of the cardiac cycle.
Mean		The integrated level of the flow for the cardiac cycle.
FMax		Maximum Flow that occurred for a cardiac cycle.
FMin		Minimum Flow that occurred for a cardiac cycle.
CO		Cardiac Output is the mean flow normalized to ml/Min. Note: When running in a logging mode other than 1 epoch, the CO value will be calculated from the averaged mean flow value.
SV		Stroke Volume.
+dQ		+dQ is the maximum positive value of the first derivative of the flow that occurs during the cardiac cycle.
Iso		The value of flow during the rapid up rise of the flow signal.
TPR		Total Peripheral Resistance.
NPMN		The non-pulsatile mean calculated over the complete logging interval.