Anesth Pain Med.  2006 Jul;1(1):40-43.

The Effects of Volume Preloading on Spinal Anesthesia for Elective Caesarean Section

• Jee YS
• Hong JY
• Yoon HJ
• Kim MJ
• Lee JY

Abstract

BACKGROUND
We have compared the protective effect of 1,000 ml preload on prevention of hypotension with 200 ml preload of crystalloid solution, administered during the 10 min before spinal anesthesia in 30 healthy women undergoing elective caesarean section.
METHODS
Systolic blood pressure (SAP) and heart rate (HR) were measured as index of hypotension due to vasodilaton. Ephedrine IV bolus was treated as a decrease in systolic blood pressure to less than 70% of baseline value or to less than 90 mmHg. Apgar score, umbilical artery and vein blood gas analysis were also checked as parameters of fetal well-being.
RESULTS
There was no difference in changes in maternal HR, SAP during spinal anesthesia between the two groups. There was no significant difference in ephedrine requirements between the two groups. There was no effect on the clinical condition of the newborn in each group, as assessed by Apgar scores and umbilical cord blood gas analysis.
CONCLUSIONS
These results suggest that volume preloading is not essential to prevent spinal-induced hypotension at caesarean section.

Keyword

caesarean section; spinal anesthesia; volume preloading

MeSH Terms

Anesthesia, Spinal*
Apgar Score
Blood Gas Analysis
Blood Pressure
Cesarean Section*
Ephedrine
Female
Fetal Blood
Heart Rate
Humans
Hypotension
Infant, Newborn
Pregnancy
Umbilical Arteries
Veins
Ephedrine