Echocardiography Underestimates Stroke Volume and Aortic Valve Area: Implications for Patients With Small-Area Low-Gradient Aortic Stenosis

@inproceedings{Chin2014EchocardiographyUS,
  title={Echocardiography Underestimates Stroke Volume and Aortic Valve Area: Implications for Patients With Small-Area Low-Gradient Aortic Stenosis},
  author={Calvin Chin and Hwan J. Khaw and Elton Luo and Shengxing Tan and Audrey C. White and David E. Newby and M. R. Dweck},
  booktitle={The Canadian journal of cardiology},
  year={2014}
}
BACKGROUND Discordance between small aortic valve area (AVA; < 1.0 cm(2)) and low mean pressure gradient (MPG; < 40 mm Hg) affects a third of patients with moderate or severe aortic stenosis (AS). We hypothesized that this is largely due to inaccurate echocardiographic measurements of the left ventricular outflow tract area (LVOTarea) and stroke volume alongside inconsistencies in recommended thresholds. METHODS One hundred thirty-three patients with mild to severe AS and 33 control… CONTINUE READING

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