COMPARISON OF 0.75 PERCENT ROPIVACAINE AND 2 PERCENT LIGNOCAINE MIXTURE WITH 0.5 PERCENT BUPIVACAINE AND 2 PERCENT LIGNOCAINE MIXTURE IN PERIBULBAR BLOCK FOR CATARACT SURGERY
Abstract
Abstract : Purpose To compare 0.75 percent ropivacaine
lignocaine hyaluronidase mixture with 0.5 percent
bupivacaine lignocaine hyaluronidase mixture in terms of
onset duration of action, blocking quality effect on the
intraocular pressure in peribulbar anaesthesia in cataract
surgery.Materials methods A total of 50 patients scheduled for
cataract surgery under peribulbar anaesthesia were randomly
divided into two groups according to the anaesthetic agent
used namely 0.75 percent ropivacaine with lignocaine
hyaluronidase group as group A 0.5 percent bupivacaine with
lignocaine hyaluronidase group as group B. Assessment of
the onset of motor sensory blockade, quality of intra post
operative analgesia need for supplementary anaesthesia,
changes in intraocular pressure were noted. Results There
was no much statistical significance in motor sensory
blockade between the two groups. The need for post
operative analgesia was delayed in patients under group A.
No patients in either group required supplemental
anaesthesia. Group A showed greater reduction of intraocular
pressure compared to group B.Conclusion 0.75 percent
ropivacaine is comparable with 0.5 percent bupivacaine in
respect to anaesthetic properties in peribulbar block in small
incision cataract surgery.
0.75 percent Ropivacaine has greater reduction in
intraocular pressure has longer duration of action compared
to 0.5 percent bupivacaine.Results There was no much
statistical significance in motor sensory blockade between the
two groups. The need for post operative analgesia was
delayed in patients under group A. No patients in either group
required supplemental anaesthesia. Group A showed greater
reduction of intraocular pressure compared to group
B.Conclusion 0.75 percent ropivacaine is comparable with 0.5
percent bupivacaine in respect to anaesthetic properties in
peribulbar block in small incision cataract surgery.
0.75percent Ropivacaine has greater reduction in intraocular
pressure has longer duration of action compared to 0.5
percent bupivacaine.
Keyword :Ropivacaine, Bupivacaine, Lignocaine, peribulbar
block, Intraocular pressure.
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