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The assessment of serum drug levels to diagnose non-adherence in stable chronic heart failure patients

R. Pelouch, V. Voříšek, V. Furmanová, M. Solař

. 2019 ; 62 (2) : 52-57. [pub] 20190423

Language English Country Czech Republic

Document type Journal Article, Observational Study

Persistent link   https://www.medvik.cz/link/bmc20005515

Grant support
PRVOUK 037/03 Univerzita Karlova v Praze

BACKGROUND: The aim of our study was to evaluate the prevalence of drug non-adherence in stable chronic heart failure (CHF) patients using serum drug levels (SDL) assessment. METHODS: CHF patients were prospectively enrolled during scheduled outpatient visit. Except standard procedures an unanticipated blood sampling for the SDL assessment was obtained. Analysis was focused on the prescribed heart failure and antihypertensive medication and was performed by liquid chromatography coupled with mass spectrometry. The patient was labelled as non-adherent if at least one of drugs assessed was not found in the serum. In the first half of patients multiple SDL have been evaluated during the follow-up. RESULTS: Eighty one patients were enrolled. The non-adherence was proven in twenty of them (25%). In the subgroup of thirty eight patients with multiple SDL evaluation the non-adherence raised significantly with increasing number of visits assessed together (21% for single visit, 29% for two of three visits assessed together and 34% for all three visits evaluated together, all p < 0.001). CONCLUSION: The non-adherence was proven in significant part of stable CHF patients using SDL assessment. This method seems to be reliable and effective and should be a part of clinical assessment in selected patients with CHF.

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Literatura

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