http://www.cnr.it/ontology/cnr/individuo/prodotto/ID23717
Parameters derived by ultrasonic myocardial characterization in patients are associated with mortality (Articolo in rivista)
- Type
- Label
- Parameters derived by ultrasonic myocardial characterization in patients are associated with mortality (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1111/j.1523-1755.2005.00530.x (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Pizzarelli F.; Dattolo P.; Ferdeghini E.M.; Morales M.A. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- In: \"Kidney Int \",68, 2005,3,1320-1325 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- PubMe (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Nephrology and Dialysis Unit, SM Annunziata Hospital, Florence, Italy
CNR IFC, Pisa, Italy (literal)
- Titolo
- Parameters derived by ultrasonic myocardial characterization in patients are associated with mortality (literal)
- Abstract
- Background. Autopsy studies have shown that hypertrophic
hearts of uremic patients have peculiar characteristics. Changes
in tissue structure are detectable by ultrasound as changes in
echo reflectivity.
Methods. We studied 96 dialysis patients, 18 hypertensive
subjects with normal renal function and 52 healthy subjects.
The echo pattern of interventricular septum was assessed by
videodensitometry (VDT) (i.e., a computer-assisted quantitative
analysis of gray levels). For each pixel a numerical value
from 0 (black) to 255 (white) was assigned. From the resulting
histogram of gray level frequency distribution, we obtained indexes
of central tendency (reflectivity) and of homogeneity of
distribution (uniformity).
Results. For the same septum thickness, dialysis patients
showed a significantly greater reflectivity (87 ± 19 and 70 ± 17)
(P < 0.001) and lower uniformity (137 ± 32 and 184 ± 71) (P
< 0.007) compared with hypertensives. Hypertensive patients
showed VDT parameters similar to control subjects in spite of
significantly higher septum thickness (P < 0.003). Followed up
after 5 years, dialysis patients with a reduced homogeneity of
distribution of gray levels (lower uniformity) showed a significantly
shorter survival (HR by Cox 2.5, 95% CI 1.21-5.27).
Conclusion. For a similar degree of cardiac hypertrophy, dialysis
patients differed widely from hypertensives in their VDT
parameters. By contrast, the hypertensive heart differed from
the normal heart in the degree of hypertrophy but not in terms
of VDT parameters. VDT parameters are independent predictors
of all-cause mortality in dialysis patients. (literal)
- Editore
- Prodotto di
- Autore CNR
Incoming links:
- Prodotto
- Autore CNR di
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
- Editore di