Assessment of mean respiratory rate from ECG recordings for risk stratification after myocardial infarction.
J Electrocardiol
; 47(5): 700-4, 2014.
Article
in En
| MEDLINE
| ID: mdl-24891267
ABSTRACT
BACKGROUND:
We recently reported that nocturnal respiratory rate (NRR) predicts non-sudden cardiac death in survivors of myocardial infarction (MI). Here, we present the details of the technique deriving NRR from ECG recordings.METHODS:
Continuous ECG and respiratory chest excursions were simultaneously recorded in 941 MI survivors who were followed-up for 5-years. Mean respiratory rate was derived from the ECG based on RR intervals, QRS amplitudes, and QRS vectors and compared to chest belt measurements. NRR was calculated from Holter-ECGs accordingly using the same ECG processing.RESULTS:
Directly-measured and ECG-derived respiratory rates were in good agreement. Areas under the ROC curve for 10-min-ECG- and Holter-derived respiratory rate were well in the confidence intervals of that of the chest belt measurement. The optimum dichotomy of NRR for the prediction of mortality was ≥18.6 breaths per minute.CONCLUSIONS:
The mean respiratory rate can be precisely derived from continuous ECGs.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Electrocardiography, Ambulatory
/
Respiratory Rate
/
Myocardial Infarction
Type of study:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Electrocardiol
Year:
2014
Type:
Article
Affiliation country:
Germany