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- Title
Left Ventricular Vortices as Observed by Vector Flow Mapping: Main Determinants and their Relation to Left Ventricular Filling.
- Authors
Rodríguez Muñoz, Daniel; Moya Mur, José Luis; Fernández‐Golfín, Covadonga; Becker Filho, Derly Carlos; González Gómez, Ariana; Fernández Santos, Sara; Lázaro Rivera, Carla; Rincón Díaz, Luis Miguel; Casas Rojo, Eduardo; Zamorano Gómez, José Luis
- Abstract
Background Swirling flow, organized in vortices, contributes to adequate left ventricular function. In this study, we apply a novel echocardiographic flow-mapping technique, vector flow mapping ( VFM), to evaluate the main characteristics of left ventricular vortices and its relation to filling parameters. Methods Forty-eight subjects underwent conventional transthoracic echocardiographic examination with additional intracardiac flow assessment with VFM using a Aloka Alpha-10 system and experimental VFM analysis software. To analyze vortex behavior, its rotation direction, duration, location inside the left ventricle, size, and intensity were assessed in apical long-axis view. Its relation to conventional left ventricular filling parameters was then analyzed. Results Two vortex components were consistently identified following each transmitral filling wave. The anterior component of these visualized vortices was analyzed, due to its higher significance in the cardiac cycle, following early filling (V1) and atrial contraction (V2). Differences were observed in several aspects of vortex behavior between V1 and V2, particularly in patients with normal left ventricular filling parameters. These differences may be related to varying roles of vortices in different periods of the cardiac cycle. Conclusions Vector flow mapping allowed visualization and measurement of several parameters defining vortex behavior inside the cardiac cycle. The differences observed in these parameters between vortices in different phases of the cardiac cycle may be related to their role in optimizing cardiac function.
- Subjects
HEART physiology; LEFT heart ventricle; ECHOCARDIOGRAPHY; BLOOD circulation; BODY surface mapping; STATISTICAL correlation; RESEARCH evaluation; T-test (Statistics); INTER-observer reliability; REPEATED measures design; DATA analysis software; DESCRIPTIVE statistics
- Publication
Echocardiography, 2015, Vol 32, Issue 1, p96
- ISSN
0742-2822
- Publication type
Article
- DOI
10.1111/echo.12584