From: Electrocardiographic features of children with Duchenne muscular dystrophy
Year | Inclusion criteria | Exclusion criteria | Study type | Sample size | Total ECG | Age enrollment | EF abnormality | ECG abnormality | VT | others |
---|---|---|---|---|---|---|---|---|---|---|
2010 | DMD(2004–2009) | None | Retrospective | 150 | 377 | 10.1–16.9 | Not specified | 94% DCM with ST changes | 27% with VT in DCM, 6 died after 0.68 ± 0.41 years later | 5 with abnormal ECG progressed to DCM in 3.7 ± 2.6 years |
2013 | DMD(2002–2011) | None | Retrospective | 155 | 800 | 1.8–37.2 | Higher V1R and EF < 55%, r = − 0.044 | None | None | Higher V1Rdid not predict DCM |
2016 | DMD(2010–2014) | None | Retrospective | 235 | 442 | 11.0–17.0 | LVEF ≥ 55% | Not specified | 0 | - |
 |  |  |  |  |  |  | LVEF = 35%-54% |  | 2% |  |
 |  |  |  |  |  |  | LVEF < 35% |  | 30% |  |
2018 | DMD > 18 years |  | Retrospective | 121 | 121 | 18–41 | 32% in LBBB; 50% without LBBB | Lower LVEF in patients with LBBB | None | – |