Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
|
| pubmed:dateCreated |
1998-9-1
|
| pubmed:abstractText |
Current Doppler methods have been unreliable in estimating filling pressures in heart transplants. Tissue Doppler imaging is a technique that permits evaluation of myocardial relaxation; combined with transvalvular E velocity, it could improve estimation of these pressures. To investigate this possibility, we evaluated 50 patients by right-sided cardiac catheterization and Doppler echocardiography simultaneously. Their mean +/-SD age was 53+/-15 years and the mean age of donor hearts was 30+/-12.5 years. The mitral E velocity was combined with the early myocardial relaxation (Ea) velocity by tissue Doppler at the lateral border of the mitral annulus. Likewise, the tricuspid E velocity was combined with Ea at the lateral corner of the tricuspid annulus. Mean wedge pressure related weakly to mitral inflow variables but strongly to E/Ea [r=0.8; wedge pressure=2.6+1.46(E/Ea)]. In 25 repeat right-sided cardiac catheterizations, changes in mean wedge pressure were well detected by Doppler, with a mean difference of -0.7+/-3 mm Hg. Mean right atrial pressure related weakly to routine tricuspid inflow variables but strongly to tricuspid E/Ea [r=0.79; n=38; right atrial pressure=1.76(E/Ea) - 3.7]. In 18 repeat right-sided cardiac catheterizations, changes in mean right atrial pressure were well detected by Doppler, with a mean difference of 0+/-3.45 mm Hg. Mean wedge pressure and mean right atrial pressure can be estimated in heart transplants with reasonable accuracy using the ratio of E/Ea. Furthermore, this method can accurately track changes in filling pressures.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
AIM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Aug
|
| pubmed:issn |
0002-9149
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
1
|
| pubmed:volume |
82
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
352-7
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:9708666-Adolescent,
pubmed-meshheading:9708666-Adult,
pubmed-meshheading:9708666-Aged,
pubmed-meshheading:9708666-Echocardiography, Doppler,
pubmed-meshheading:9708666-Female,
pubmed-meshheading:9708666-Follow-Up Studies,
pubmed-meshheading:9708666-Heart Catheterization,
pubmed-meshheading:9708666-Heart Transplantation,
pubmed-meshheading:9708666-Humans,
pubmed-meshheading:9708666-Male,
pubmed-meshheading:9708666-Middle Aged,
pubmed-meshheading:9708666-Myocardial Contraction,
pubmed-meshheading:9708666-Prospective Studies,
pubmed-meshheading:9708666-Pulmonary Wedge Pressure,
pubmed-meshheading:9708666-Reproducibility of Results,
pubmed-meshheading:9708666-Sensitivity and Specificity,
pubmed-meshheading:9708666-Ventricular Function, Left,
pubmed-meshheading:9708666-Ventricular Function, Right,
pubmed-meshheading:9708666-Ventricular Pressure
|
| pubmed:year |
1998
|
| pubmed:articleTitle |
Estimation of left and right ventricular filling pressures after heart transplantation by tissue Doppler imaging.
|
| pubmed:affiliation |
Baylor College of Medicine and Methodist Hospital, Houston, Texas 77030, USA.
|
| pubmed:publicationType |
Journal Article,
Comparative Study
|