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Prognostic Significance of ST-Segment Elevation in Leads V₁-₂ in Patients With Severe Aortic Stenosis.
BACKGROUND: ST-segment elevation (STE) in leads V1-2 is often observed in patients with severe aortic stenosis (AS), but its significance remains unknown.
METHODS AND RESULTS: We retrospectively evaluated baseline ECGs and 5-year clinical outcomes in 211 consecutive patients with severe AS, defined as peak aortic jet velocity (Aortic Vmax) >4.0 m/s, or mean aortic pressure gradient >40 mmHg, or aortic valve area (AVA) <1.0 cm(2). The primary outcome measure was a composite of death or surgical aortic valve replacement (AVR). Patients with STE in leads V1-2(≥0.15 mV) had greater Aortic Vmax and smaller AVA than patients without. With a median follow-up of 4.9 years, the cumulative 5-year incidence of death or AVR was significantly higher in patients with STE in leads V1-2 than in patients without (91.4% vs. 77.1%; P=0.003). After adjusting for confounders, STE in leads V1-2 was independently associated with higher risk for death or AVR (hazard ratio, 1.53; 95% confidence interval, 1.06-2.22; P=0.02). In 64 asymptomatic patients without any indication for AVR at initial diagnosis of severe AS, the cumulative incidence of AVR was significantly higher in patients with STE in leads V1-2 than in patients without (57.6% vs. 30.5%; P<0.001).
CONCLUSIONS: STE in leads V1-2 independently predicted poorer prognosis and more frequent need for AVR in patients with severe AS.
METHODS AND RESULTS: We retrospectively evaluated baseline ECGs and 5-year clinical outcomes in 211 consecutive patients with severe AS, defined as peak aortic jet velocity (Aortic Vmax) >4.0 m/s, or mean aortic pressure gradient >40 mmHg, or aortic valve area (AVA) <1.0 cm(2). The primary outcome measure was a composite of death or surgical aortic valve replacement (AVR). Patients with STE in leads V1-2(≥0.15 mV) had greater Aortic Vmax and smaller AVA than patients without. With a median follow-up of 4.9 years, the cumulative 5-year incidence of death or AVR was significantly higher in patients with STE in leads V1-2 than in patients without (91.4% vs. 77.1%; P=0.003). After adjusting for confounders, STE in leads V1-2 was independently associated with higher risk for death or AVR (hazard ratio, 1.53; 95% confidence interval, 1.06-2.22; P=0.02). In 64 asymptomatic patients without any indication for AVR at initial diagnosis of severe AS, the cumulative incidence of AVR was significantly higher in patients with STE in leads V1-2 than in patients without (57.6% vs. 30.5%; P<0.001).
CONCLUSIONS: STE in leads V1-2 independently predicted poorer prognosis and more frequent need for AVR in patients with severe AS.
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