A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/029 (2006.01)
Patent
CA 2295605
A method for the measurement of cardiac output in a patient in which the arterial blood pressure waveform of a patient from a blood pressure monitoring device over a period of time is subjected to various transformations and corrections, including a Fourier analysis in order to obtain the modulus of the first harmonic. The nominal stroke volume is then determined from the first harmonic and data relating to the arterial blood pressure and heart rate. The nominal cardiac output is then obtained from the nominal stroke volume.
L'invention concerne un procédé de mesure du débit cardiaque d'un patient chez qui la forme d'onde de pression artérielle mesurée pendant une période déterminée par un dispositif de surveillance de la pression artérielle est soumise à diverses transformations et corrections, y compris une analyse de Fourier, en vue d'obtenir le coefficient de conversion de la première harmonique. Le volume systolique nominal est ensuite déterminé à partir de la première harmonique et de données relatives à la pression artérielle et à la fréquence cardiaque. Le débit cardiaque nominal est ensuite obtenu à partir du volume systolique nominal.
Band David Marston
Linton Nicholas William Fox
Linton Robert Anthony Fox
O'brien Terence Kevin
Lidco Group Plc
Monitoring Technology Limited
Riches Mckenzie & Herbert Llp
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