Estimation of propensity to symptomatic hypotension

A - Human Necessities – 61 – M

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A61M 1/14 (2006.01) A61B 5/021 (2006.01) A61B 5/053 (2006.01)

Patent

CA 2663897

The invention relates to estimation of a patient's (P) propensity to suffer from symptomatic hypotension during extracorporeal blood treatment. An electromagnetic test signal (s), which is applied over a thoracic region of the patient (P) via at least one transmitter electrode (151 ). A result signal (r) produced in response to the test signal (s) is received via at least one receiver electrode (152) on the patient (P). A test parameter (Y) is derived based on the result signal (r). The test parameter (Y) expresses a fluid status of the thoracic region of the patient (P), and it is tested whether or not the test parameter fulfills an alarm criterion. If so, an alarm signal (.alpha.) is generated. This signal (.alpha.) indicates that patient (P) is hypotension prone, and that appropriate measures should be taken.

L'invention concerne l'estimation de la propension d'un patient (P) à souffrir d'une hypotension symptomatique pendant un traitement extracorporel de sang. Un signal de test électromagnétique (s) est appliqué sur une région thoracique du patient (P) au moyen d'au moins une électrode émettrice (151). Un signal de résultat (r) produit en réponse au signal de test (s) est reçu par l'intermédiaire d'au moins une électrode réceptrice (152) placée sur le patient (P). Un paramètre de test (Y) est déduit selon le signal de résultat (r). Le paramètre de test (Y) exprime un état de fluide thoracique du patient (P), et est testé pour savoir si le paramètre de test correspond à un critère d'alerte. Dans l'affirmative, un signal d'alerte (.alpha.) est généré, indiquant que le patient (P) est enclin à une hypotension, et que des mesures appropriées doivent être prises.

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