The relationship between preoperative anxiety level, ABO blood types and birth outcomes in cesarean sections

Abstract

Objective: There is a relationship between ABO blood groups, which are part of the genetic phenotype, and various psychiatric diseases. Our primer aim in this study is to examine the relationship between ABO blood groups and preoperative anxiety (POA) levels in patients undergoing elective cesarean section. The secondary aim is to determine the relationship between POA levels and birth outcomes in pregnant women.
 Material and Method: A total of 132 patients with different ABO blood groups who were scheduled for elective cesarean section under spinal anesthesia between August 2020 and July 2021 at the Medical Faculty Hospital were included in this prospective observational study. State Anxiety Inventory scores (SAI) were used to assess preoperative anxiety in groups A, B, AB, and O. Birth outcomes (fetal birth weight, birth sex and APGAR scores at the 1st and 5th minutes) were recorded.
 Results: There were 55 people (41.7%) in the A blood group, 43 people (32.6%) in the O blood group, 25 people (18.9%) in the B blood group, 9 people (6.8%) in the AB blood group. A total of 73/132 (55.3%) patients with SAI score >40 were identified. There was no significant difference in mean SAI scores in A, B, AB and O blood groups (p=0.531). Fetal birth weight was found to be lower in patients with high SAI scores (p=0.044). 
 Conclusion: There was no relationship between ABO blood groups and preoperative anxiety and birth outcomes in elective cesarean sections under spinal anesthesia, but low fetal birth weight was found in pregnant women with high anxiety. More studies with larger sample sizes in the future are needed to confirm the results of our study.