Linked Life Data

15080528

Source:http://linkedlifedata.com/resource/pubmed/id/15080528

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-4-14
pubmed:abstractText
To date, left ventricular diastolic function can be clinically assessed by Doppler echocardiography. The Doppler recording of mitral inflow and pulmonary venous flow provides main information about ventricular diastolic properties. At the level of the mitral inflow we can measure the early diastolic peak velocity (E), atrial peak velocity and derive their ratio, the E velocity deceleration time and isovolumic relaxation time, and calculate atrial filling fraction. At the level of the pulmonary veins, the peak systolic velocity (S), the peak diastolic velocity (D), the S/D ratio, the peak of reverse atrial velocity and its duration, above all in terms of difference with the mitral A duration, characterize the different patterns of diastolic function. Also the new ultrasound technologies are clinically useful to define ventricular diastolic properties. The myocardial early diastolic velocity (Em) detectable by pulsed tissue Doppler at the level of the mitral annulus, and the flow propagation velocity (Vp) recordable by color M-mode of left ventricular inflow, both relatively preload-independent, are measurements related to tau, the reference hemodynamic variable. The E/Em and E/Vp ratios provide accurate estimation of the changes in left ventricular end-diastolic pressure. They allow us to distinguish the pseudonormal and restrictive patterns from the normal pattern and are, therefore, alternative tools to Valsalva maneuver of mitral inflow and pulmonary venous flow. The predictive value of the pattern of abnormal relaxation (grade I of diastolic dysfunction) and both the reversible and irreversible restrictive patterns (grade III and IV respectively) is now demonstrated and permits important prognostic stratification and appropriate therapeutic management.
pubmed:language
ita
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1129-4728
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
86-97
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
[Doppler echocardiography for the assessment of left ventricular diastolic function: methodology, clinical and prognostic value].
pubmed:affiliation
Dipartimento di Medicina Clinica e Sperimentale, Università degli Studi Federico II, Napoli. mgalderi@unina.it
pubmed:publicationType
Journal Article, English Abstract, Review