Method of monitoring patient compliance with medications...

G - Physics – 01 – N

Patent

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Details

G01N 33/53 (2006.01) G01N 33/493 (2006.01) G01N 33/70 (2006.01) G01N 33/94 (2006.01) G01N 33/15 (2006.01)

Patent

CA 2175584

A method of monitoring compliance of a patient that has been placed on a medication maintenance program with a prescribed medication dosage by determining a normalized urine methadone concentration. An unadulterated urine sample is obtained from the patient. The urine methadone concentration and urine specific gravity are measured. The normalized urine medication concentration is calculated as a function of the measured medication concentration in the urine and the urine specific gravity. The calculated normalized urine medication concentration is compared with an expected medication concentration value for the patient for the maintenance program prescribed to determine any significant differences therebetween as an indication of noncompliance. Alternatively, a urinary-parameter normalized urine medication concentration is calculated as a function of the measured medication concentration in the urine, the urine specific gravity and at least one selected pharmacokinetic parameter of the medication. The calculated urinary-parameter urine medication concentration is compared with an expected medication concentration value for an average compliant patient for the maintenance program prescribed to determine any significant differences therebetween as an indication of noncompliance.

L'invention concerne un procédé de contrôle de l'observation des prescriptions médicales par un patient sous programme de soutien médicamenteux par une posologie prescrite, lequel consiste à déterminer la concentration normalisée de méthadone dans l'urine. On prélève sur le patient un échantillon d'urine non adultéré. On mesure ensuite la concentration normalisée de méthadone dans l'urine et le poids spécifique de l'urine. On calcule la concentration normalisée de médicament dans l'urine en fonction de la concentration de médicament dans l'urine et du poids spécifique de l'urine. On compare ensuite la concentration de médicament normalisée dans l'urine avec la valeur de concentration de médicament escomptée pour le patient et le programme de soutien prescrit, de manière à déterminer toute différence notable entre ces dernières, signalant la non-observation du traitement. Dans un autre mode de réalisation, on calcule la concentration normalisée de médicament dans l'urine à paramètre urinaire en fonction de la concentration de médicament mesurée dans l'urine, du poids spécifique de l'urine et d'au moins un paramètre de pharmacocinétique sélectionné du médicament. On compare la concentration normalisée de médicament dans l'urine à paramètre urinaire avec une valeur de concentration de médicament escomptée pour un patient moyen observant le traitement et pour le programme prescrit afin de déterminer les différences notables entre ces dernières, signalant une non-observation du traitement.

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