Noninvasive blood potassium measurement using signal-processed, single-lead ecg acquired from a handheld smartphone.
J Electrocardiol
; 50(5): 620-625, 2017.
Article
em En
| MEDLINE
| ID: mdl-28641860
ABSTRACT
OBJECTIVE:
We have previously used a 12-lead, signal-processed ECG to calculate blood potassium levels. We now assess the feasibility of doing so with a smartphone-enabled single lead, to permit remote monitoring. PATIENTS ANDMETHODS:
Twenty-one hemodialysis patients held a smartphone equipped with inexpensive FDA-approved electrodes for three 2min intervals during hemodialysis. Individualized potassium estimation models were generated for each patient. ECG-calculated potassium values were compared to blood potassium results at subsequent visits to evaluate the accuracy of the potassium estimation models.RESULTS:
The mean absolute error between the estimated potassium and blood potassium 0.38±0.32 mEq/L (9% of average potassium level) decreasing to 0.6 mEq/L using predictors of poor signal.CONCLUSIONS:
A single-lead ECG acquired using electrodes attached to a smartphone device can be processed to calculate the serum potassium with an error of 9% in patients undergoing hemodialysis.SUMMARY:
A single-lead ECG acquired using electrodes attached to a smartphone can be processed to calculate the serum potassium in patients undergoing hemodialysis remotely.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Potássio
/
Eletrocardiografia
/
Smartphone
/
Hiperpotassemia
/
Falência Renal Crônica
Tipo de estudo:
Prognostic_studies
Limite:
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article