Hematocrit and whole blood viscosity in newborns: analysis of 100 cases.

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dc.contributor.authorMerchant, R Hen_US
dc.contributor.authorPhadke, S Den_US
dc.contributor.authorSakhalkar, V Sen_US
dc.contributor.authorAgashe, V Sen_US
dc.contributor.authorPuniyani, R Ren_US
dc.date.accessioned1992-05-01en_US
dc.date.accessioned2009-05-27T05:00:00Z
dc.date.available1992-05-01en_US
dc.date.available2009-05-27T05:00:00Z
dc.date.issued1992-05-01en_US
dc.description.abstractHematocrit (Hct) and whole blood viscosity was studied at a mean age of ten hours in 100 neonates. Group A (n = 25), were term normal newborns, Group B (n = 25) were preterms, Group C (n = 20) were term small for gestation (SGA) and Group D (n = 30) had perinatal hypoxia. Blood viscosity was estimated in all cases at shear rates 94.5, 51.2, 20.4 and 8.1 and intergroup variability in viscosity compared at shear rate 51.2. The mean hematocrit (Hct) (59.4%) and viscosity (8.2 cps) was higher in Group A as compared to other groups, but the difference was not significant (p greater than 0.05). The upper limit of viscosity in Group C (11.9 cps) was higher than in all other groups but this difference was also not significant (p greater than 0.05). With decrease in shear rates a reciprocal increase in viscosity was noted in all four groups. Seventeen neonates (17%) had polycythemia of which eight (47.5%) were SGA. Twelve per cent preterms were polycythemic. Only 3% of neonates had hyperviscosity. The mean Hct and viscosity of the 17 cases with polycythemia was 70.9 and 9.21 cps, respectively, which was significantly higher than mean Hct and viscosity of Group A (p less than 0.05). Partial exchange transfusions were done in five neonates with Hct greater than 75%, of which only one had hyperviscosity. Post-exchange viscosity was not estimated. Whereas, three neonates with polycythemia were symptomatic, none of these had hyperviscosity. A linear correlation between Hct and viscosity was observed (r = 0.67).en_US
dc.description.affiliationDivision of Neonatology, B. J. Wadia Hospital for Children, Parel, Bombay.en_US
dc.identifier.citationMerchant RH, Phadke SD, Sakhalkar VS, Agashe VS, Puniyani RR. Hematocrit and whole blood viscosity in newborns: analysis of 100 cases. Indian Pediatrics. 1992 May; 29(5): 555-61en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/7237
dc.language.isoengen_US
dc.source.urihttps://indianpediatrics.neten_US
dc.subject.meshAnoxia --blooden_US
dc.subject.meshBlood Viscosityen_US
dc.subject.meshHematocriten_US
dc.subject.meshHumansen_US
dc.subject.meshInfant, Newborn --blooden_US
dc.subject.meshInfant, Premature --blooden_US
dc.subject.meshInfant, Small for Gestational Age --blooden_US
dc.subject.meshPolycythemia --blooden_US
dc.titleHematocrit and whole blood viscosity in newborns: analysis of 100 cases.en_US
dc.typeJournal Articleen_US
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