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  1. Article

    Open Access

    Prognostic value of left atrial volume index in degenerative mitral stenosis

    Degenerative mitral stenosis (DMS) is associated with a poor prognosis. Although mean transmitral gradient (TMG) has shown a good correlation with outcome, little is known about the association between other e...

    Idit Yedidya, Steele C. Butcher, Jan Stassen… in The International Journal of Cardiovascula… (2022)

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  2. Article

    Open Access

    Utility of conventional clinical risk scores in a low-risk COVID-19 cohort

    Several specific risk scores for Coronavirus disease 2019 (COVID-19) involving clinical and biochemical parameters have been developed from higher-risk patients, in addition to validating well-established pneu...

    **ghao Nicholas Ngiam, Nicholas W. S. Chew, Sai Meng Tham… in BMC Infectious Diseases (2021)

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  3. No Access

    Article

    Optimal vortex formation time index in mitral valve stenosis

    Left ventricular vortex formation time (VFT) is a novel dimensionless index of flow propagation during left ventricular diastole, which has been demonstrated to be useful in heart failure and cardiomyopathy. I...

    Anand Ambhore, **ghao Nicholas Ngiam… in The International Journal of Cardiovascula… (2021)

  4. No Access

    Article

    Inadequately low left ventricular mass in patients with significant aortic stenosis predicts favourable prognostic outcomes

    In patients with significant aortic stenosis (AS), the prognostic effect of the increase in left ventricular mass (LVM) in relation to one’s hemodynamic load has been described. Inappropriately high LVM has be...

    Nicholas W. S. Chew, **ghao Nicholas Ngiam… in The International Journal of Cardiovascula… (2021)

  5. No Access

    Article

    Echocardiographic discrepancies in severity grading of aortic valve stenosis with left ventricular outflow tract (LVOT) cut-off values in an Asian population

    Inconsistencies in grading of aortic stenosis (AS) severity have been reported. However, it remains to be studied in an Asian population. We investigated consistency of grading AS severity at various left vent...

    Nicholas W. S. Chew, **ghao Nicholas Ngiam… in The International Journal of Cardiovascula… (2020)

  6. No Access

    Article

    Clinical and echocardiographic features of paradoxical low-flow and normal-flow severe aortic stenosis patients with concomitant mitral regurgitation

    Mitral regurgitation (MR) coexists in a significant proportion of patients with severe aortic stenosis (AS), and portends inferior therapeutic outcomes. In severe AS, MR is thought to contribute to a low-flow ...

    **ghao Nicholas Ngiam, Nicholas Chew… in The International Journal of Cardiovascula… (2020)