Characteristics and prognosis of incomplete right bundle branch block: an epidemiologic study
YL Liao,
LA Emidy,
A Dyer,
JS Hewitt,
RB Shekelle,
O Paul,
R Prineas,
and
J Stamler
A cohort of 1,960 white men aged 40 to 56 years without initial apparent heart disease and with 11 years of annual rest electrocardiograms and 20 year mortality data was followed in the Chicago Western Electric Company Study. Incomplete right bundle branch block was found in 134 men (6.8%) at entry. During follow-up, 222 men developed such block, an incidence rate of 13.6%. Left axis deviation of -30 degrees or less was more frequent in men with than in those without incomplete block at entry (8.2 versus 2.4%). Men with left axis deviation also had a higher incidence of incomplete right bundle branch block. Similarly, men developing incomplete block had a significantly greater risk of developing left axis deviation. The associations between incomplete block and left axis deviation were unrelated to age and body weight. Men with incomplete block had a significantly greater likelihood of developing complete right bundle branch block. The 11 year incidence rate of complete block was 5.1% for men with baseline incomplete block and 0.7% for those without. Complete block developed in 2 of 220 incident cases of incomplete block but in none of the 440 control men matched by age and duration of follow-up. Although incomplete right bundle branch block was not related to an increased risk of death in 20 years from coronary heart disease and cardiovascular diseases, the study data suggest that such block is frequently a manifestation of primary abnormality of the cardiac conduction system in middle-aged men.
This article has been cited by other articles:
|
|
|
|
 
J. B. Nielsen, M. S. Olesen, M. Tango, S. Haunso, A. G. Holst, and J. H. Svendsen
Incomplete right bundle branch block: a novel electrocardiographic marker for lone atrial fibrillation
Europace,
February 1, 2011;
13(2):
182 - 187.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
F. G. Cosío, J. &#x. ; Palacios, A. &#x. ;n. Pastor, and A. Núñez
CHAPTER 2 The Electrocardiogram
ESC Textbook of Cardiovascular Medicine,
January 1, 2009;
2(1):
med-9780199566990-chapter - med-9780199566990-chapter.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. E. Saffitz and R. B. Schuessler
Connexin-40, Bundle-Branch Block, and Propagation at the Purkinje-Myocyte Junction
Circ. Res.,
November 10, 2000;
87(10):
835 - 836.
[Full Text]
[PDF]
|
|
|
|
|
|
|
D De Bacquer, G De Backer, M Kornitzer, and H Blackburn
Prognostic value of ECG findings for total, cardiovascular disease, and coronary heart disease death in men and women
Heart,
December 1, 1998;
80(6):
570 - 577.
[Abstract]
[Full Text]
|
|
|
|
|
|
|
B. E. Kreger, K. M. Anderson, and D. Levy
QRS Interval Fails to Predict Coronary Disease Incidence: The Framingham Study
Arch Intern Med,
July 1, 1991;
151(7):
1365 - 1368.
[Abstract]
[PDF]
|
|
|
|
