Quantitative aspects of red cell size variation during pregnancy

Area of Science:

• Hematology
• Obstetrics
• Clinical Chemistry

Background:

• Red cell volume distribution curves offer insights into red blood cell populations.
• Electronic cell counters facilitate the analysis of red cell size variations.
• Understanding red cell indices is crucial for monitoring health during pregnancy.

Purpose of the Study:

• To analyze red cell volume distribution curves in pregnant and non-pregnant females.
• To investigate the correlation between red cell volume distribution and other red cell indices.
• To assess the utility of Channelyzer parameters in identifying pregnancy-related red cell variations.

Main Methods:

• Utilized electronic cell counters to obtain red cell volume distribution curves.
• Analyzed data from pregnant and non-pregnant female subjects.
• Performed statistical analysis to correlate Channelyzer parameters with hemoglobin (Hb), red cell count (RCC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC).

Main Results:

• Demonstrated a good correlation between Channelyzer parameters and standard red cell indices (Hb, RCC, MCV, MCH, MCHC).
• Observed abnormal red cell volume distribution curves in a significant proportion of pregnant patients, especially in the latter half of gestation.
• Identified an increased proportion of microcytic cells (8%) and evidence of macrocytosis (67%) in pregnant patients during late pregnancy, correlating with gestational stage.

Conclusions:

• Red cell volume distribution analysis using the Channelyzer is a simple and convenient method to assess red cell size variations.
• Abnormal red cell distribution, particularly macrocytosis, is common in the latter half of pregnancy.
• This analysis may provide insights into conditions like iron and folate deficiency in pregnancy, potentially reducing the need for routine hematinic administration.