Korean J Anesthesiol.  2000 Nov;39(5):651-655. 10.4097/kjae.2000.39.5.651.

Effect of Speed of Injection on the Level of Spinal Anesthesia with 0.5% Hyperbaric Bupivacaine for a Cesarean Section

• Kim AR
• Kim JM
• Han SO
• Yang SH
• Choi EJ

• KMID: 2031632
• DOI: http://doi.org/10.4097/kjae.2000.39.5.651

Abstract

BACKGROUND: The purpose of this study was to determine whether the injection rate affects the spread of spinal anesthesia in cesarean sections.
METHODS
Spinal anesthesia was performed on 45 parturients in a cesaren section. Dural puncture was performed in the sitting position with a 27-gauge Whitacre needle. All patients received a mixture of 10 mg hyperbaric bupivacaine and 15 microgram fentanyl. Twenty five (Group I) patients received rapid injections (about 0.2-0.3 ml/sec) and twenty (Group II) received slow injections (about 0.1 ml/sec). Anesthetic levels, time to T4 sensory block, maximal height sensory block and incidence of hypotension were measured.
RESULTS
There was significantly rapid T4 sensory block in group I but no differences in maximal height of sensory block and incidence of hypotension between the two groups. CONCLSIONS: We conclude that injection rate (about 0.1-0.3 ml/sec) has a statistically insignificant influence on the maximal height sensory block and incidence of hypotension.

Keyword

Anesthesia, obstetric: cesarean section; Anesthetic techniques: spinal; Anesthetics, local: bupivacaine

MeSH Terms

Anesthesia, Spinal*
Bupivacaine*
Cesarean Section*
Female
Fentanyl
Humans
Hypotension
Incidence
Needles
Pregnancy
Punctures
Bupivacaine
Fentanyl