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Volume 3 No. 4, October 2008 |
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Anesthetic and
Akinetic Effects of 1% Ropivacaine Given in Two Different Peribulbar
Block; Single Medial Canthus or Double Injection Technique Department of Anesthesiology and ICU, Faculty of Medicine, Tanta University, Egypt
Tanta Med. Sc. J 2008; 3(4):137-141
Background/Aim: Owing to the advanced age of patients scheduled for
cataract and IOL insertion, and the high concentrations of local
anesthetic used in peribulbar blockade, the use of ropivacaine
produces an effective motor blockade with minimal risks for neuro
and cardiotoxicity. Concerning globe injury due to multiple
injections the new single injection medial canthus is theoretically
preferred to decrease the frequency of globe injury. In this study
we used ropivacaine evaluating its effectiveness in single and
double injection peribulbar technique aiming to get the benefit of
the drug and the best method of administration in peribulbar
blockade. Patients & Methods: This single blind study was done on 60
patients ASA 1-111 underwent cataract and IOL insertion surgery.
Patients were taken peribulbar block using 8 ml. 1% ropivacaine with
30 IU/ml hyalurinidase. Patients were classified into two equal
groups; group1 (n.30) is the single injection group group 2(n.30) is
the double injection group. Eye globe and lid akinesia and
anesthesia, the need for supplementary injection and the incidence
of complications like ecchemosis,high intra ocular pressure nausea,
vomiting and pain were recorded. Results: this study, concluded
that,26 patients(86.6%) of single injection group VS 28 patients
(93.3%)in double injection group were having complete anesthesia and
akinesia after giving block, only 4 patients in group 1 (13.3%)
needed supplementation of block VS 3 patients (10%) in group 2 with
almost no difference in absence of intra and post operative
complications. Conclusion: 1% Ropivacaine is a suitable agent for
single injection peribulbar anesthesia for cataract surgery.
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