• J. Cardiothorac. Vasc. Anesth. · Oct 2019

    Observational Study

    Qualitative Assessment of Color M-Mode Signals in the Evaluation of Left Ventricular Diastolic Function: A Proof of Concept Study.

    • Dagmar F Hernandez-Suarez, Yeunjung Kim, Francisco Menéndez López, Harish Ramakrishna, and Angel López-Candales.
    • Cardiovascular Medicine Division, University of Puerto Rico School of Medicine, San Juan, Puerto Rico. Electronic address: dagmar.hernandez@upr.edu.
    • J. Cardiothorac. Vasc. Anesth. 2019 Oct 1; 33 (10): 2658-2662.

    ObjectivesAlthough the most recent American Society of Echocardiography guidelines are a major step forward in echocardiographic evaluation of diastolic function, the ability to differentiate between normal and abnormal function remains challenging. The authors aimed to determine whether qualitative assessments of color M-mode flow displays could be a useful parameter in the evaluation of left ventricular (LV) diastolic dysfunction.DesignRetrospective observational study.SettingTertiary care level hospital.ParticipantsThe study comprised echocardiographic data from 105 consecutive patients.InterventionNone.Measurements And Main ResultsPatients were allocated into the following 3 groups according to the LV diastolic function based on current American Society of Echocardiography recommendation guidelines for LV diastolic dysfunction classification: group I-normal function (n = 40); group II-early relaxation abnormalities (grade I) (n = 50), and group III-elevated LV pressures (grade II) (n = 15). Patients with normal diastolic function were younger (45 ± 14 y) than those with diastolic dysfunction (group II: 64 ± 10 y and group III: 56 ± 15 y) (p < 0.05). Volumetric echocardiographic parameters and mitral inflow and mitral annulus tissue Doppler imaging measures were significantly different among the 3 studied groups (p < 0.05). Interestingly, qualitative assessment of color M-mode flows displayed distinctive signals based on the left ventricle filling properties. Intraobserver and interobserver variability to determine the reliability of these signals were robust (weighted kappa 0.84 ± 0.11 and 0.65 ± 0.13, respectively).ConclusionQualitative assessment of color M-mode flow displays offers simple and reliable information of potential usefulness in the evaluation of LV diastolic function.Copyright © 2019 Elsevier Inc. All rights reserved.

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