QRS Duration Changes in Patients with Single Ventricle Physiology: Birth to 10 Years.

Autor: Khan S; Heart Center, Nationwide Children's Hospital, Columbus, Ohio., Nadorlik H; Heart Center, Nationwide Children's Hospital, Columbus, Ohio., Kertesz N; Heart Center, Nationwide Children's Hospital, Columbus, Ohio., Nicholson L; Heart Center, Nationwide Children's Hospital, Columbus, Ohio., Ro PS; Heart Center, Nationwide Children's Hospital, Columbus, Ohio., Cua CL; Heart Center, Nationwide Children's Hospital, Columbus, Ohio.
Jazyk: angličtina
Zdroj: Pacing and clinical electrophysiology : PACE [Pacing Clin Electrophysiol] 2015 Oct; Vol. 38 (10), pp. 1159-65. Date of Electronic Publication: 2015 Jul 20.
DOI: 10.1111/pace.12677
Abstrakt: Background: QRS prolongation may be a predictor of mortality in certain forms of congenital heart disease. Minimal data exist describing changes in QRS duration in patients with single ventricles (SVs). The goal was to describe changes in QRS duration in patients with SV and to determine if differences existed between single right ventricle (sRV) versus single left ventricle (sLV) patients.
Methods: Chart review was performed on patients with SV physiology. Patients were divided into sRV and sLV groups. QRS durations were measured monthly for the first 6 months, at 1 year, and then yearly until 10 years. t-tests were used for analysis.
Results: One hundred sixty patients were evaluated (95 sRV, 65 sLV). The greatest change in QRS duration for the entire cohort occurred in the first 6 months of life versus 6 months to 10 years of age (1.81 ms/month vs 0.20 ms/month). sRV QRS durations were significantly longer than sLV QRS durations at 1 year (78.9 ± 12.6 ms vs 73.2 ± 11.9 ms), 2 year (81.7 ± 14.7 ms vs 73.4 ± 12.5 ms), 4 year (84.2 ± 12.1 ms vs 77.9 ± 16.4 ms), 6 year (90.8 ± 12.7 ms vs 83.4 ± 13.4 ms), 7 year (90.8 ± 16.5 ms vs 81.2 ± 16.6 ms), and 8 year (96.7 ± 13.6 ms vs 84.8 ± 13.9 ms) time points.
Conclusion: The greatest change in QRS duration in SV patients occurred in the first 6 months of life when these patients' ventricles were volume loaded. Differences in QRS duration between sRV and sLV patients occurred early in life. Further studies are needed to determine if minimizing volume load early in life decreases the rate of change in QRS duration.
(© 2015 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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