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[Hemorrheological parameters during normal labor and uterine contraction].
Rev Fr Gynecol Obstet 1991; 86(2 Pt 2):148-53RF

Abstract

Considering the modified fluidity of blood during numerous kind of stress, the authors studied blood rheology during delivery as an example of a particularly severe stress. The authors measured blood and plasma viscosity and erythrocyte aggregation in 77 pregnant at the following stages of delivery: below 4 cm dilatation; more than 4 cm dilatation; during fetus expulsion, during after birth delivery. Apparent blood viscosity and viscosity adjusted to 45% hematocrit rose to reach a peak during expulsion (p less than 0.01) then to become normal again during placenta delivery (p less than 0.01). Hematocrit and plasmatic viscosity showed no changes during labour and expulsion. In addition erythrocyte aggregation was lowering during expulsion and delivery (stage with physiological defibrination). Rising blood viscosity might be explained by a red blood cell rigidification measured by the increasing of "Tk" (p less than 0.01) and by a nonsignificant increase of the filterability index measured by hemorheometer. In conclusion, delivery is accompanied by a blood hyperviscosity essentially related to a transient red blood cell rigidification.

Authors+Show Affiliations

Service d'Exploration Physiologique des Hormones et des Métabolismes, Hôpital Lapeyronie, Montpellier.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article

Language

fre

PubMed ID

1767165

Citation

Brun, J F., et al. "[Hemorrheological Parameters During Normal Labor and Uterine Contraction]." Revue Francaise De Gynecologie Et D'obstetrique, vol. 86, no. 2 Pt 2, 1991, pp. 148-53.
Brun JF, Boulot P, Fons C, et al. [Hemorrheological parameters during normal labor and uterine contraction]. Rev Fr Gynecol Obstet. 1991;86(2 Pt 2):148-53.
Brun, J. F., Boulot, P., Fons, C., Hedon, M. N., Viala, J. L., & Orsetti, A. (1991). [Hemorrheological parameters during normal labor and uterine contraction]. Revue Francaise De Gynecologie Et D'obstetrique, 86(2 Pt 2), pp. 148-53.
Brun JF, et al. [Hemorrheological Parameters During Normal Labor and Uterine Contraction]. Rev Fr Gynecol Obstet. 1991 Feb 25;86(2 Pt 2):148-53. PubMed PMID: 1767165.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Hemorrheological parameters during normal labor and uterine contraction]. AU - Brun,J F, AU - Boulot,P, AU - Fons,C, AU - Hedon,M N, AU - Viala,J L, AU - Orsetti,A, PY - 1991/2/25/pubmed PY - 1991/2/25/medline PY - 1991/2/25/entrez SP - 148 EP - 53 JF - Revue francaise de gynecologie et d'obstetrique JO - Rev Fr Gynecol Obstet VL - 86 IS - 2 Pt 2 N2 - Considering the modified fluidity of blood during numerous kind of stress, the authors studied blood rheology during delivery as an example of a particularly severe stress. The authors measured blood and plasma viscosity and erythrocyte aggregation in 77 pregnant at the following stages of delivery: below 4 cm dilatation; more than 4 cm dilatation; during fetus expulsion, during after birth delivery. Apparent blood viscosity and viscosity adjusted to 45% hematocrit rose to reach a peak during expulsion (p less than 0.01) then to become normal again during placenta delivery (p less than 0.01). Hematocrit and plasmatic viscosity showed no changes during labour and expulsion. In addition erythrocyte aggregation was lowering during expulsion and delivery (stage with physiological defibrination). Rising blood viscosity might be explained by a red blood cell rigidification measured by the increasing of "Tk" (p less than 0.01) and by a nonsignificant increase of the filterability index measured by hemorheometer. In conclusion, delivery is accompanied by a blood hyperviscosity essentially related to a transient red blood cell rigidification. SN - 0035-290X UR - https://www.unboundmedicine.com/medline/citation/1767165/[Hemorrheological_parameters_during_normal_labor_and_uterine_contraction]_ L2 - https://medlineplus.gov/childbirth.html DB - PRIME DP - Unbound Medicine ER -