Discover our baroreflex analyzers
4 Jul 2012

NOTOCORD® just released two new analyzers to complete its cardiovascular portfolio:

BRS10a - Baroreflex sequence analyzer
BRS10a performs online detection of spontaneous baroreflex sequences using systolic blood pressure (SBP) and pulse interval (PI).

BRS10a uses a time domain technique with an approach based on the identification of a sequence in which progressive increases in SBP are followed by a progressive lengthening in PI, or vice versa. The baroreflex sensitivity is then expressed in term of baroreflex gain (in ms/mmHg) and is extracted from a linear relationship between SBP and PI.

BRS10a only needs a SBP signal and discriminates type 1 (ascending) and type 2 (decreasing) baroreflex sequences. The analyzer extracts baroreflex gain and Baroreflex Effectiveness Index for the two types of sequences.

BRS10a also allows setting a synchronization delay between SBP and PI if the baroreflex impairment induces a delayed response.

 

CSA10a - Cross-spectrum analyzer
CSA10a is a general purpose cross-spectrum analyzer of possible use in spontaneous baroreflex studies with SBP and PI or RR interval. It performs online spectral analysis of any two signals using the Discrete Fourier Transform.

SBP and PI fluctuate at regular frequencies and the magnitude can be accurately quantified using power spectral analysis. Frequency domain methods are widely used for investigating heart rate and SBP variabilities in humans and conscious animals.

CSA10a computes coherence, gain and phase between two signals on specific bandwidths.