Predictive value of continuous ambulatory electrocardiographic monitoring in elderly people.
OBJECTIVE
To determine the predictive value of findings on continuous ambulatory electrocardiographic monitoring in elderly subjects.


METHODS
Retrospective cohort study. Ten year follow up of randomly selected elderly subjects who participated in ambulatory electrocardiography study in 1982. Mortality data derived from official registers.


METHODS
Turku, Finland.


METHODS
480 people aged 65 or older in 1982 who were living in the community, of whom 72% agreed to participate.


METHODS
Mortality from cardiac and non-cardiac causes during 10 year follow up.


RESULTS
In the univariate analysis adjusted for age, risk of death from cardiac causes was increased among those with ventricular ectopy of more than 100 beats during the day (odds ratio 2.6; 99% confidence interval 1.4 to 6.1) or at night (3.3; 1.1 to 9.8) and in those with multifocal ventricular ectopic beats during the day (2.3; 1.0 to 5.0) or night (3.0; 1.3 to 7.1) compared with those with no ventricular ectopy. Sinoatrial pauses exceeding 1.5 seconds during the day (4.5; 1.8 to 11.1) were also associated with excess mortality from cardiac causes. None of the findings on ambulatory electrocardiography predicted death from non-cardiac causes. A further study of explanatory variables in the stepwise logistic regression analysis showed that sinoatrial pauses exceeding 1.5 seconds (4.0; 95% confidence interval 1.8 to 8.9) and night time multifocal ventricular ectopy (2.7; 1.2 to 5.9) predicted excess mortality from cardiac causes independently of age or clinically evident heart disease.


CONCLUSIONS
Daytime sinoatrial pauses exceeding 1.5 seconds and night time multifocal ventricular ectopy in the ambulatory electrocardiogram predict increased mortality from cardiac causes independently of clinically evident cardiac diseases in unselected elderly subjects.
Räihä
I J
IJ
Department of Geriatrics, University of Turku, Finland.
Piha
S J
SJ
Seppänen
A
A
Puukka
P
P
Sourander
L B
LB
D000368:Aged; D000369:Aged, 80 and over; D001146:Arrhythmia, Sinus / Q000401:mortality; D015331:Cohort Studies; D015716:Electrocardiography, Ambulatory; D005260:Female; D005387:Finland / Q000453:epidemiology; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000401:mortality*; D006801:Humans; D016015:Logistic Models; D008297:Male; D011237:Predictive Value of Tests; D015995:Prevalence; D012189:Retrospective Studies; D018570:Risk Assessment