A comparison of plain ropivacaine 0.5% with plain bupivacaine 0.5% in spinal anaesthesia for orthopaedic surgery
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Date
2006
Authors
Al-Meeri, Nasreldeen Mohamed Mosleh
Journal Title
Journal ISSN
Volume Title
Publisher
Pusat Pengajian Sains Perubatan, Universiti Sains Malaysia
Abstract
Where as to reach Tl 0 in bupivacaine group was 6.4 minutes (SD ±3.3) and in ropivacaine
group reached in 9.3 minutes (SD ±5.2) (P<O.Ol5). Regarding sensory block at T4, 20
patients (55.5%) in bupivacaine group reached this level with mean onset of sensory block
in 6.9 minutes (SD ±3.7). Where as only 4 patients (11 %) in ropivacaine group were able to
reach the level of T4 in 15 minutes (SD ±4.08) (P<O.OOl). The duration of sensory block
was assessed by the patient's first request for analgesia. In bupivacaine group the mean
duration of time of sensory block was 5.4 hours (SD ±1.2) and in ropivacaine group it was
6.5 hours (SD ±2.44) (P<0.02). The mean onset of motor block to reach Modified Bromage
Score (MBS 1) in bupivacaine group was 1.4 minutes (SD ±0.8) and in ropivacaine group it
was 2.1 minutes (SD ±1.5) (P<0.01). And to reach MBS2, in bupivacaine group and in
ropivacaine group was 1.6 minutes (SD ±0.9) and 3.0 minutes (SD ±2.0) respectively
(P<O.OOl). While to reach MBS3 bupivacaine group was 2.1 minutes (SD ±1.1) and in
ropivacaine group it was 3.6 minutes (SD ±1.8) (P<O.OOI). In the bupivacaine group the
mean duration of motor block was 4.7 hours (SD ±1.1) and in ropivacaine group was 3.5
hours (SD ±1.4) (P<O.OOl).
CONCLUSION
Ropivacaine in a dose of 15 mg as 0.5% solution can be used with an acceptable onset of
sensory and motor blockade with a longer duration of analgesia and early mobilization for
lower limb orthopedic surgery of duration less than three hours and a level of lower than
T12 dermatome.
Description
Keywords
Spinal