Velocity-Time Integral of Aortic Regurgitation: A Novel Echocardiographic Marker in the Evaluation of Aortic Regurgitation Severity.

Autor:	Abellán-Huerta J; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Bonaque-González JC; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Rubio-Patón R; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., García-Gómez J; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Egea-Beneyto S; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Soria-Arcos F; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Consuegra-Sánchez L; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Soto-Ruiz RM; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Ramos-Martín JL; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain., Castillo-Moreno JA; Departamento de Cardiologia, Hospital General Universitario Santa Lucía, Cartagena, Spain.
Jazyk:	English; Portuguese
Zdroj:	Arquivos brasileiros de cardiologia [Arq Bras Cardiol] 2020 Jul 15; Vol. 115 (2), pp. 253-260.
DOI:	10.36660/abc.20190243
Abstrakt:	Background: Echocardiography is essential for the diagnosis and quantification of aortic regurgitation (AR). Velocity-time integral (VTI) of AR flow could be related to AR severity. Objective: This study aims to assess whether VTI is an echocardiographic marker of AR severity. Methods: We included all patients with moderate or severe native AR and sinus rhythm who visited our imaging laboratory from January to October 2016. All individuals underwent a complete echocardiogram with AR VTI measurement. The association between VTI and AR severity was analyzed by logistic regression and multivariate regression models. A p-value<0,05 was considered statistically significant. Results: Among the 62 patients included (68.5±14.9 years old; 64.5%: moderate AR; 35.5%: severe AR), VTI was higher in individuals with moderate AR compared to those with severe AR (2.2±0.5 m vs. 1.9±0.5 m, p=0.01). Patients with severe AR presented greater values of left ventricular end-diastolic diameter (LVEDD) (56.1±7.1 mm vs. 47.3±9.6 mm, p=0.001), left ventricular end-diastolic volume (LVEDV) (171±36.5 mL vs. 106±46.6 mL, p<0.001), effective regurgitant orifice (0.44±0.1 cm2vs. 0.18±0.1 cm2, p=0.002), and regurgitant volume (71.3±25.7 mL vs. 42.5±10.9 mL, p=0.05), as well as lower left ventricular ejection fraction (LVEF) (54.1±11.2% vs. 63.2±13.3%, p=0.012). The VTI proved to be a marker of AR severity, irrespective of LVEDD, LVEDV, and LVEF (odds ratio 0.160, p=0.032) and of heart rate and diastolic blood pressure (DBP) (odds ratio 0.232, p=0.044). Conclusions: The VTI of AR flow was inversely associated with AR severity regardless of left ventricular diameter and volume, heart rate, DBP, and LVEF. VTI could be a marker of AR severity in patients with native AR and sinus rhythm. (Arq Bras Cardiol. 2020; [online].ahead print, PP.0-0).
Databáze:	MEDLINE
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