Increased erythrocyte osmotic fragility in pregnancy

Area of Science:

• Hematology
• Obstetrics and Gynecology

Background:

• Erythrocyte osmotic fragility is a measure of red blood cell integrity.
• Pregnancy involves significant physiological changes that could affect red blood cells.

Purpose of the Study:

• To investigate the impact of pregnancy on erythrocyte osmotic fragility.
• To compare osmotic fragility in pregnant women versus nonpregnant controls.

Main Methods:

• Incubated glycerol lysis time was used to assess osmotic fragility.
• 100 pregnant women and 50 nonpregnant women were studied.

Main Results:

• 22% of pregnant women exhibited abnormal erythrocyte osmotic fragility.
• Increased fragility was predominantly observed in the third trimester (32.3%).
• Only 2.9% of women in early pregnancy showed increased fragility.

Conclusions:

• Physiological changes during pregnancy alter erythrocyte osmotic fragility.
• This shift may complicate the diagnosis of hereditary spherocytosis in late pregnancy.