A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/02 (2006.01) A61N 1/08 (2006.01) A61N 1/362 (2006.01)
Patent
CA 2251718
In a process (10) for monitoring patients with chronic congestive heart failure, a high frequency current is passed between electrodes (20) applied to two limbs of a patient. The current, voltage and phase angle between the measured current and voltage are measured (18) to enable the calculation of congestive heart failure (CHF) indicia values. The calculated CHF indicia values are then compared with baseline values established when the patient is in a known, stable condition. Intervention is initiated if the differences between the calculated CHF indicia values and the baseline values are outside of established tolerances. The CHF indicia values may include resistance, reactance, impedance, total body water and extracellular water. Moreover, the indicia values may include a figure of merit indicative of the hydration status of the patient.
Procédé (10) servant à contrôler des malades atteints d'insuffisance cardiaque congestive chronique et consistant à faire passer un courant haute fréquence entre des électrodes (20) appliquées à deux membres du malade. On mesure (18) le courant, la tension et l'angle de phase entre le courant et la tension mesurés afin de pouvoir calculer les valeurs d'indice de l'insuffisance cardiaque congestive (CHF). On compare ensuite les valeurs d'indice de CHF à des valeurs de départ établies quand le malade est dans un état stable connu. On commence l'intervention si les différences entre les valeurs d'indice calculées de CHF et les valeurs de départ sont situées en dehors de tolérances établies. Les valeurs d'indice de CHF peuvent comprendre la résistance, la réactance, l'impédance, la quantité totale d'eau corporelle et l'eau extracellulaire. De plus, les valeurs d'indice de CHF peuvent comprendre une indication de l'état d'hydratation du malade.
Gowling Lafleur Henderson Llp
Zymed Medical Instrumentation Inc.
LandOfFree
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