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May
1998
Ropivacaine
in paediatric surgery: preliminary results.
Ivani
G, Mereto N, Lampugnani E, De Negri P, Torre M, Mattioli G, Jasonni V,
Lonnqvist PA; Paediatric Anaesthesia 1998;8:127-130.
[ see
abstract below
]
Ivani et al conducted a double blind study of bupivacaine (0.25%, 2 mg/kg)
vs. ropivacaine (0.2%, 2 mg/kg) for caudal anesthesia and postoperative
pain management in children. They found that ropivacaine was an effective
local anesthetic in children and even suggested that, because of its apparent
better cardiotoxic profile, it may offer a wider margin of safety for
children.
I applaud their early investigations comparing ropivacaine with the standard
bupivacaine. Bupivacaine never received FDA approval for children less
than 12 years of age because the company never sponsored the appropriate
studies to achieve pediatric labeling. Perhaps the manufacturer felt that
the pediatric market was too small to justify the investment. Thus a drug
that is used every day, even on preterms, still remains unlabelled for
children!
Ropivacaine has recently been released and as usual there is little pediatric
data, in fact the PDR states "No special studies were conducted in pediatrics.
Until further experience is gained in children younger than 12 years,
administration of Naropin in this age group is not recommended." Despite
many requests from a variety of reputable pediatric anesthesiologists
the manufacturer chose not to conduct pediatric studies until an open
forum sponsored by the FDA forced the issue (studies are now ongoing).
This lack of interest in pediatric studies by the manufacturer was an
inexcusable omission in the drug approval process because these studies
should have been carried out at the phase III level so that a pediatric
label could have been developed prior to release.
Ivani and colleagues are to be commended for helping to collect a pediatric
experience. However, before the pediatric community embraces this new
local anesthetic, I feel it important to await the development of a wider
scientific data base which will allow appropriate pediatric labeling and
the development of appropriate dosing recommendations.*
* Note: Physicians should never deny a pediatric patient the benefit of
a new drug simply because the drug is not "approved" for pediatric use.
This would deny children access to about 80% of drugs available. However,
good judgment, dosing based on published experience, and use of drug within
the community allow physicians to use any drug in the patient's best interest.
For further reading see also: Da Conceicao, MJ, Coelho, L: Caudal anaesthesia
with 0.375% ropivacaine or 0.375% bupivacaine in paediatric patients.
BJA 1998;80:507-508.
See related articles by Dr. Cote:
Guidelines for Monitoring and Management
of Pediatric Patients During and After Sedation for Diagnostic and Therapeutic
Procedures
Washington Report
ASA Update for Pediatrics
Return to the Current
Literature Review Front Page , or read the abstract:
ABSTRACT
In a double
blind study 40 patients, aged 1-9 years, undergoing elective minor surgery
were examined and randomly divided in two groups (20 children each). After
light general anaesthesia Group 1 received caudal injection of bupivacaine
0.25% 2 mg · kg-1 while Group 2 received 0.2% ropivacaine
2 mg · kg-1.
No differences were observed in demographic data, HR, BP and duration of
surgery, the onset time of anaesthesia was 12 min and 9 min in Group 1 and
2 respectively. Ten patients in Group 1 received paracetamol in the first
24 h after surgery while only two children in Group 2 needed analgesic;
even the duration of analgesia in the patients requiring paracetamol was
superior in group 2 (520 min vs 253 min). No motor block was apparent at
awakening in either group and no side effect was noticed.
In conclusion ropivacaine seems to be an effective and safe drug in paediatric
regional anaesthesia.
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