Linked Life Data

17631092

Source:http://linkedlifedata.com/resource/pubmed/id/17631092

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-7-16
pubmed:abstractText
This study sought to evaluate the incremental value of the time interval between the onset of early transmitral flow velocity (E) and the onset of early diastolic velocity (E') of the mitral annulus for the prediction of left ventricular (LV) end-diastolic pressure (EDP) in the presence of a "gray zone" value for E/E'. An E/E' ratio of 8 to 15 is classified as the "gray zone" for the estimation of LVEDP. Recently, it was suggested that prolongation of the time interval between the onset of E and E' (T(E'-E)) might indicate elevated filling pressure. Simultaneous left-sided cardiac catheterization and Doppler echocardiography were performed in 74 patients with normal systolic function. T(E'-E) was calculated as the time interval between the peak of the R wave and the onset of E' and between the peak of the R wave and the onset of E. Of the 74 patients enrolled, 55 (27 men, mean age 59 years) who had E/E' ratios of 8 to 15 were analyzed. LVEDP was elevated (>18 mm Hg) in 34 patients (62%). There was no significant difference in Doppler echocardiographic parameters and N-terminal pro-brain natriuretic peptide levels between those with normal and high LVEDP, except T(E'-E), which was significantly longer in the latter (19.0 +/- 17.8 vs 35.0 +/- 17.0 ms, p = 0.002). The receiver-operating characteristic curves for the prediction of high LVEDP showed the largest area under the curve (0.760) for T(E'-E). In multivariate analysis, T(E'-E) added significant information to the other parameters in the prediction of high LVEDP (p = 0.029). In conclusion, T(E'-E) may have an incremental value in the estimation of LVEDP in patients with normal systolic function and indeterminate E/E' ratios.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0002-9149
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
100
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
326-30
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Incremental value of measuring the time difference between onset of mitral inflow and onset of early diastolic mitral annulus velocity for the evaluation of left ventricular diastolic pressures in patients with normal systolic function and an indeterminate E/E'.
pubmed:affiliation
Cardiology Division, Department of Internal Medicine, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't