Biomaterial Database

Relationship between visually estimated blood loss at delivery and postpartum change in haematocrit. 2009

E P Gharoro, and E J Enabudoso

Department of Obstetrics and Gynaecology, University of Benin Teaching Hospital, PMB 1111, Benin City, Edo State, Nigeria. gharoro@uniben.edu

This study was to assess blood loss using visual estimation and change in postpartum haematocrit value following vaginal delivery, and to study any relationship that may exist. A total of 152 parturients who had had vaginal delivery were studied. Blood loss at delivery was visually estimated. An intrapartum haematocrit with a 48 h postpartum haematocrit were evaluated. Data were analysed with SPSS 15 statistical package. The average visual estimation of blood loss (VEBL) was 217 +/- 197 ml with a I degrees PPH rate of 6.6%. Some 93 (61.2%) mothers had a blood loss of < or = 200 ml. There was no statistical significant difference in the average VEBL within the age or parity groups of the mothers (p values, 0.234 and 0.87). The average postpartum haematocrit change was -0.74 +/- 3.99, while 46.7% of the parturients had a decline in haematocrit value. The range of haematocrit change for parturients with VEBL > or = 500 ml was -12 to -4. Regression analysis showed a negative correlation between VEBL and change in haematocrit values from positive to negative. Pearson's correlation coefficient -0.549, p < 0.00. It was concluded that postpartum haematocrit has a significant negative non-linear correlation with VEBL. In the absence of primary postpartum haemorrhage, majority of women have either the same or an increased haematocrit following vaginal delivery. Consequently, routine haematocrit estimation in parturients with visual estimated blood loss of <500 ml barely confers any cost benefit.

UI	MeSH Term	Description	Entries
D010298	Parity	The number of offspring a female has borne. It is contrasted with GRAVIDITY, which refers to the number of pregnancies, regardless of outcome.	Multiparity,Nulliparity,Primiparity,Parity Progression Ratio,Parity Progression Ratios,Ratio, Parity Progression,Ratios, Parity Progression
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D012044	Regression Analysis	Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.	Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions
D005260	Female		Females
D006400	Hematocrit	The volume of packed RED BLOOD CELLS in a blood specimen. The volume is measured by centrifugation in a tube with graduated markings, or with automated blood cell counters. It is an indicator of erythrocyte status in disease. For example, ANEMIA shows a low value; POLYCYTHEMIA, a high value.	Erythrocyte Volume, Packed,Packed Red-Cell Volume,Erythrocyte Volumes, Packed,Hematocrits,Packed Erythrocyte Volume,Packed Erythrocyte Volumes,Packed Red Cell Volume,Packed Red-Cell Volumes,Red-Cell Volume, Packed,Red-Cell Volumes, Packed,Volume, Packed Erythrocyte,Volume, Packed Red-Cell,Volumes, Packed Erythrocyte,Volumes, Packed Red-Cell
D006473	Postpartum Hemorrhage	Excess blood loss from uterine bleeding associated with OBSTETRIC LABOR or CHILDBIRTH. It is defined as blood loss greater than 500 ml or of the amount that adversely affects the maternal physiology, such as BLOOD PRESSURE and HEMATOCRIT. Postpartum hemorrhage is divided into two categories, immediate (within first 24 hours after birth) or delayed (after 24 hours postpartum).	Hemorrhage, Postpartum,Delayed Postpartum Hemorrhage,Immediate Postpartum Hemorrhage,Hemorrhage, Delayed Postpartum,Hemorrhage, Immediate Postpartum,Postpartum Hemorrhage, Delayed,Postpartum Hemorrhage, Immediate
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D055815	Young Adult	A person between 19 and 24 years of age.	Adult, Young,Adults, Young,Young Adults