Matches in SemOpenAlex for { <https://semopenalex.org/work/W1676788251> ?p ?o ?g. }
- W1676788251 endingPage "325" @default.
- W1676788251 startingPage "316" @default.
- W1676788251 abstract "In 1997 we started a collaboration among three groups, combining our experience with Doppler examination of the human fetus, blood flow studies on fetal lamb, and mathematical modeling of human circulation. In preliminary investigations on fetal lambs, the same Doppler method designed for the human fetus was used to measure venous blood flow in the umbilical veins of seven fetal lambs. Doppler measurements and diffusion technique groups for umbilical venous flow were 210.8+/-18.8 and 205.7+/-38.5 ml/min/kg, respectively (p = 0.881). In human pregnancy the interobserver variabilities for the vein diameter, mean velocity, and absolute umbilical venous blood were 2.9%, 7.9%, and 12.7%, respectively. A cross-sectional study allowed us to establish normal reference values. Venous blood flow/kg of estimated fetal weight showed a nonsignificant linear reduction with gestational age, from 128.7 ml/min/kg at 20 weeks to 104.2 ml/min/kg at 38 weeks. In a series of 37 growth-restricted fetuses, the UV flow per kilogram was significantly lower in the more severe growth-restricted fetuses (abdominal circumference below the second percentile and abnormal umbilical arterial p.i.) than in normal comparable fetuses (p < 0.001). In a series of 140 normal fetuses, we calculated that the absolute blood flow rate in the ductus venosus (DV) increases significantly with advancing gestational age from 20 to 38 weeks of gestation (from 23.2+/-9.6 ml/min to 43.5+/-21.5 ml/min). This means that the percentage of umbilical blood flow shunted through the DV decreases significantly during gestation (from 50% at midgestation to 20% at 38 weeks). In a series of 45 growthrestricted fetuses, delivered because of nonreactive fetal heart rate (group 2) and for other reasons but still with a normal heart rate pattern (group 1), we measured the ductal inlet diameter. In these fetuses, the diameters at the ductal isthmus, normalized for the dimension of the abdominal circumference (inlet diameter/abdominal circumference), were significantly larger (group 1 = 6.8+/-2.3; group 29.4+/-2.8 ) than in the control group (6.1+/-0.3). This means that in this subset of fetuses the amount of blood shunted can be increased as a compensatory mechanism." @default.
- W1676788251 created "2016-06-24" @default.
- W1676788251 creator A5011941875 @default.
- W1676788251 creator A5017510870 @default.
- W1676788251 creator A5025907738 @default.
- W1676788251 creator A5042370738 @default.
- W1676788251 creator A5046211374 @default.
- W1676788251 creator A5048282903 @default.
- W1676788251 creator A5082382991 @default.
- W1676788251 date "2001-09-01" @default.
- W1676788251 modified "2023-10-09" @default.
- W1676788251 title "Doppler Investigation in Intrauterine Growth Restriction-From Qualitative Indices to Flow Measurements" @default.
- W1676788251 cites W1571911412 @default.
- W1676788251 cites W1975342677 @default.
- W1676788251 cites W1983374783 @default.
- W1676788251 cites W1984024614 @default.
- W1676788251 cites W1989427798 @default.
- W1676788251 cites W2015470285 @default.
- W1676788251 cites W2019247880 @default.
- W1676788251 cites W2020185761 @default.
- W1676788251 cites W2021265970 @default.
- W1676788251 cites W2028106994 @default.
- W1676788251 cites W2047994353 @default.
- W1676788251 cites W2051327844 @default.
- W1676788251 cites W2057728572 @default.
- W1676788251 cites W2073995518 @default.
- W1676788251 cites W2082311069 @default.
- W1676788251 cites W2091994472 @default.
- W1676788251 cites W2094959773 @default.
- W1676788251 cites W2110684580 @default.
- W1676788251 cites W2116839019 @default.
- W1676788251 cites W2117246796 @default.
- W1676788251 cites W2132924014 @default.
- W1676788251 cites W2135033189 @default.
- W1676788251 cites W2140867240 @default.
- W1676788251 cites W2158305919 @default.
- W1676788251 cites W2162499454 @default.
- W1676788251 cites W2199732758 @default.
- W1676788251 cites W2294740707 @default.
- W1676788251 cites W2321875764 @default.
- W1676788251 cites W2339118999 @default.
- W1676788251 cites W2394838941 @default.
- W1676788251 doi "https://doi.org/10.1111/j.1749-6632.2001.tb03812.x" @default.
- W1676788251 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/11594551" @default.
- W1676788251 hasPublicationYear "2001" @default.
- W1676788251 type Work @default.
- W1676788251 sameAs 1676788251 @default.
- W1676788251 citedByCount "30" @default.
- W1676788251 countsByYear W16767882512012 @default.
- W1676788251 countsByYear W16767882512013 @default.
- W1676788251 countsByYear W16767882512014 @default.
- W1676788251 countsByYear W16767882512015 @default.
- W1676788251 countsByYear W16767882512017 @default.
- W1676788251 countsByYear W16767882512018 @default.
- W1676788251 countsByYear W16767882512019 @default.
- W1676788251 countsByYear W16767882512020 @default.
- W1676788251 countsByYear W16767882512021 @default.
- W1676788251 countsByYear W16767882512022 @default.
- W1676788251 countsByYear W16767882512023 @default.
- W1676788251 crossrefType "journal-article" @default.
- W1676788251 hasAuthorship W1676788251A5011941875 @default.
- W1676788251 hasAuthorship W1676788251A5017510870 @default.
- W1676788251 hasAuthorship W1676788251A5025907738 @default.
- W1676788251 hasAuthorship W1676788251A5042370738 @default.
- W1676788251 hasAuthorship W1676788251A5046211374 @default.
- W1676788251 hasAuthorship W1676788251A5048282903 @default.
- W1676788251 hasAuthorship W1676788251A5082382991 @default.
- W1676788251 hasConcept C126322002 @default.
- W1676788251 hasConcept C131872663 @default.
- W1676788251 hasConcept C158846371 @default.
- W1676788251 hasConcept C172680121 @default.
- W1676788251 hasConcept C185592680 @default.
- W1676788251 hasConcept C202751555 @default.
- W1676788251 hasConcept C2776953305 @default.
- W1676788251 hasConcept C2777411675 @default.
- W1676788251 hasConcept C2778152043 @default.
- W1676788251 hasConcept C2778376644 @default.
- W1676788251 hasConcept C2778780700 @default.
- W1676788251 hasConcept C2778964498 @default.
- W1676788251 hasConcept C2779234561 @default.
- W1676788251 hasConcept C2779753670 @default.
- W1676788251 hasConcept C46973012 @default.
- W1676788251 hasConcept C54355233 @default.
- W1676788251 hasConcept C55493867 @default.
- W1676788251 hasConcept C71924100 @default.
- W1676788251 hasConcept C86803240 @default.
- W1676788251 hasConceptScore W1676788251C126322002 @default.
- W1676788251 hasConceptScore W1676788251C131872663 @default.
- W1676788251 hasConceptScore W1676788251C158846371 @default.
- W1676788251 hasConceptScore W1676788251C172680121 @default.
- W1676788251 hasConceptScore W1676788251C185592680 @default.
- W1676788251 hasConceptScore W1676788251C202751555 @default.
- W1676788251 hasConceptScore W1676788251C2776953305 @default.
- W1676788251 hasConceptScore W1676788251C2777411675 @default.
- W1676788251 hasConceptScore W1676788251C2778152043 @default.
- W1676788251 hasConceptScore W1676788251C2778376644 @default.
- W1676788251 hasConceptScore W1676788251C2778780700 @default.
- W1676788251 hasConceptScore W1676788251C2778964498 @default.