The Effect of Injection Speed of Local Anesthetic on Success Rate of Unilateral Spinal Anesthesia / 대한마취과학회지
Korean Journal of Anesthesiology
;
: 793-797, 2005.
Article
in Korean
| WPRIM
| ID: wpr-219194
ABSTRACT
BACKGROUND:
The relationship between the injection speed of a local anesthetic and the success rate of unilateral spinal anesthesia has been a controversial issue. The aim of this thesis was to identify any significant effects of the drug injection speed on the success rate of unilateral spinal anesthesia.METHODS:
Forty patients were randomly allocated into 2 groups, group R and S. The injection speed was 4 ml/min in group R (n = 20) and 1 ml/min in group S (n = 20). Hyperbaric 0.5% bupivacaine 10 mg was injected via a syringe pump. The drug was administered at the L3-4 intervertebral space with the patient in the lateral decubitus position, which was maintained for 20 minutes after the injection. A spinal sensory block was assessed by examining the temperature sensation using an alcohol-sponge. The motor block was evaluated using the modified Bromage scale and the dependent and non-dependent sides were compared.RESULTS:
Significant differences (P<0.05) were observed in the success rate of unilateral motor paralysis (45% in group R vs 90% in group S). There were no significant blood pressure differences between the two groups 5, 10, 15, 30 and 60 minutes after injecting the hyperbaric 0.5% bupivacaine.CONCLUSIONS:
The injection speed of local anesthetics is one of the crucial factors for achieving a unilateral spinal anesthesia. Therefore, it is important to maintain a slow injection speed of a local anesthetic in unilateral spinal anesthesia.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Paralysis
/
Sensation
/
Syringes
/
Blood Pressure
/
Bupivacaine
/
Anesthesia, Spinal
/
Anesthetics, Local
Type of study:
Prognostic study
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Anesthesiology
Year:
2005
Type:
Article
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