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Triphasic mitral inflow velocity with mid-diastolic flow: The presence of mid-diastolic mitral annular velocity indicates advanced diastolic dysfunction

Authors
 Jong-Won Ha  ;  Jeong-Ah Ahn  ;  Jae-Yun Moon  ;  Hye-Sun Suh  ;  Seok-Min Kang  ;  Se-Joong Rim  ;  Yangsoo Jang  ;  Namsik Chung  ;  Won-Heum Shim  ;  Seung-Yun Cho 
Citation
 EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY , Vol.7(1) : 16-21, 2006 
Journal Title
EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY
ISSN
 1525-2167 
Issue Date
2006
MeSH
Adult ; Aged ; Biomarkers/blood ; Blood Flow Velocity ; Diastole ; Echocardiography ; Echocardiography, Doppler* ; Female ; Humans ; Hypertrophy, Left Ventricular/diagnostic imaging ; Hypertrophy, Left Ventricular/physiopathology ; Male ; Middle Aged ; Mitral Valve/diagnostic imaging* ; Mitral Valve/physiopathology* ; Natriuretic Peptide, Brain/blood* ; Peptide Fragments/blood* ; Prospective Studies ; Stroke Volume ; Ventricular Dysfunction, Left/blood ; Ventricular Dysfunction, Left/diagnostic imaging* ; Ventricular Dysfunction, Left/physiopathology*
Abstract
Mitral inflow filling pattern usually consists of 2 forward flow velocities in sinus rhythm: early rapid filling (E) and late filling with atrial contraction (A). However, additional mid-diastolic flow velocity may be present resulting in triphasic mitral inflow filling pattern. When mitral inflow is triphasic, mitral annulus velocity recorded by tissue Doppler imaging (TDI) frequently demonstrates a mid-diastolic component (L′). The significance of L′ has not been explored previously. The purpose of this study was to explore possible mechanisms and clinical implications of triphasic mitral inflow with or without L′ using TDI and proBNP. Of 9004 patients who underwent transthoracic echocardiography from March to November 2003, 83 (0.9%) patients (33 male, 50 female; mean age, 63±10 years) with a triphasic mitral inflow velocity pattern, including mid-diastolic flow velocity of at least 0.2m/s, and sinus rhythm were prospectively identified in our clinical echocardiography laboratory. Peak velocity of E, mid-diastolic (L), and A, and deceleration time (DT) of the E wave velocity were measured. Diastolic mitral annular velocities were measured at the septal corner of the mitral annulus by TDI from the apical 4-chamber view. ProBNP was measured at the time of echocardiogram using a quantitative electrochemiluminescence immunoassay. Mean heart rate was 54±6beats/min (range, 40–67). Mean left ventricular (LV) ejection fraction (EF) was 64±13% and LV systolic dysfunction (EF<40%) was present in only 6 (7%). Patients were classified into 2 groups: group 1 (n=47) included those who had L′ and group 2 (n=36) included those without L′. Group 1 patients had significantly higher peak velocity (35±14 vs 26±6cm/s, p=0.0002) and TVI (35±14 vs 26±6cm/s, p=0.0002) of L, E/E′ (18±8 vs 14±6, p=0.02), and left atrial volume index (42±14 vs 34±10ml/m2, p=0.0037). E′ (4.7±1.3 vs 6.2±2.3cm/s, p=0.001) and A′ (6.2±2.0 vs 8.6±3.4cm/s, p=0.0006) were significantly lower in group 1 compared with those of group 2. ProBNP was significantly higher in group 1 (847±1461 vs 438±1039pmol/l, p=0.0012) and it was above normal in all except in 1 patient of group 1. In conclusion, the presence of L′ in subjects with triphasic mitral inflow velocity pattern with mid-diastolic flow is associated with higher E/E′, elevated proBNP and enlarged left atrium indicating advanced diastolic dysfunction with elevated filling pressures. This unique mitral annular velocity pattern should be helpful in identifying the patients with advanced diastolic dysfunction and increased LV filling pressures.
Files in This Item:
T200600821.pdf Download
DOI
10.1016/j.euje.2005.03.007
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Seok Min(강석민) ORCID logo https://orcid.org/0000-0001-9856-9227
Shim, Won Heum(심원흠)
Rim, Se Joong(임세중) ORCID logo https://orcid.org/0000-0002-7631-5581
Jang, Yang Soo(장양수) ORCID logo https://orcid.org/0000-0002-2169-3112
Chung, Nam Sik(정남식)
Cho, Seung Yun(조승연)
Ha, Jong Won(하종원) ORCID logo https://orcid.org/0000-0002-8260-2958
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/109756
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