Noninvasive blood potassium measurement using signal-processed, single-lead ecg acquired from a handheld smartphone.
J Electrocardiol
; 50(5): 620-625, 2017.
Article
in 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.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Potassium
/
Electrocardiography
/
Smartphone
/
Hyperkalemia
/
Kidney Failure, Chronic
Type of study:
Prognostic_studies
Limits:
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Electrocardiol
Year:
2017
Document type:
Article
Affiliation country:
Estados Unidos
Publication country:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA