EFFECT OF MEAN ARTERIAL PRESSURE ON THE NEONATE IN SPIANAL ANESTHESIA

Il Dong Kim

Department of Obstetrics and Gynecology, National Medical Center, Seoul, Korea

 

OBJECTIVE

Spinal anesthesia is highly likely to occur in mothers with hypotension, which can affect blood supply to the fetus. It is necessary to find out how hypotension in mothers undergoing spinal anesthesia affects newborns.

DESIGN

 We investigated changes in blood pressure before and after anesthesia in pregnant women who underwent spinal anesthesia, compared the Apgar score, which indicates the prognosis of the newborn, and the pH of the umbilical vein to find out which factors affect the prognosis of the newborn.

Method

At the time of admission, the height, weight, and blood pressure of the mother were measured, and blood pressure before and after spinal anesthesia was measured. The effect of the difference in mean arterial pressure before and after spinal anesthesia on newborns was analyzed for the relationship between the Apgar score and gas analysis values of the umbilical cord vein.

Results

The average arterial pressure change after spinal anesthesia decreased by 18.3% (±16.1) on average, and decreased by 7.8% (±13.9) on average compared to the average arterial pressure at hospitalization. The average arterial pressure change after spinal anesthesia did not show a statistical association with the 1.5-minute Apgar score of newborns. In addition, there was no statistical association with pH, pCO2, pO2, HCO3, and BE confirmed in the umbilical cord vein gas analysis. The difference between the average arterial pressure at the time of hospitalization and the average arterial pressure after anesthesia also did not show a statistical association.

OCONCLUSIONS

 In this study, the decrease in mean arterial pressure after spinal anesthesia did not affect the hypoxia and acidosis of the fetus and did not affect the Apgar score of the newborn. Well-established methods for preventing and treating this hypotension are volume expansion, use of vasoconstrictors, and appropriate patient posture.

References

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