Zinc status, pregnancy complications, and labor abnormalities

Area of Science:

• Obstetrics and Gynecology
• Nutritional Science
• Biochemistry

Background:

• Maternal zinc status is crucial for pregnancy outcomes.
• Assessing zinc status involves plasma zinc, red blood cell zinc, and alkaline phosphatase.
• Pregnancy complications and labor patterns can be influenced by nutritional factors.

Purpose of the Study:

• To investigate the association between maternal zinc status and pregnancy complications.
• To determine if plasma zinc, red blood cell zinc, or alkaline phosphatase levels predict antenatal complications or labor dysfunction.

Main Methods:

• Maternal plasma zinc, red blood cell zinc, and serum alkaline phosphatase were measured in 279 pregnant women at delivery.
• Median values served as cutoffs to categorize participants into 'low' and 'high' status groups.
• These groups were compared regarding antenatal complications and labor patterns.

Main Results:

• Low plasma zinc levels correlated with higher rates of antenatal complications including mild toxemia, vaginitis, and postdates pregnancies.
• Low plasma zinc was also associated with prolonged labor phases, longer labor duration, and increased risk of cervical/vaginal lacerations.
• Low alkaline phosphatase was linked to a history of stillbirth, while low red blood cell zinc showed no significant associations.

Conclusions:

• Maternal plasma zinc levels are a significant predictor of pregnancy complications and abnormal labor patterns.
• Plasma zinc screening during antenatal care warrants consideration for improved patient management.
• Further evaluation of plasma zinc screening as a routine antenatal workup is recommended.