PEDIATRICS Vol. 108 No. 2 August 2001, pp. 482-484
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Gabapentin (GBP) is a gamma-aminobutyric acid (GABA) analog approved for the treatment of partial seizures with and without generalization in patients 12 years of age and older. The precise mechanism of action for GBP in the central nervous system is not known. Although it was originally designed to mimic the effects of GABA, it has been found to be inactive at GABA binding sites.1 Recently, GBP has been shown to be effective in the treatment of neuropathic pain in adults2 and children.3 We report the case of a neonate with amyoplasia congenita resulting in severe contractures and dislocated joints who was successfully and safely treated with GBP to relieve pain.
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CASE REPORT |
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D. L. was a 3-week-old male born at 36 5/7 weeks'
gestation and weighing 2475 g to a 20-year-old
G1/P0 mother who received late prenatal care. The pregnancy was remarkable for oligohydraminos and substance abuse including marijuana, tobacco, alcohol, crack cocaine, and ecstasy, the mother's self-reported drug of choice. The
neonatal toxicology screen was positive for marijuana (
9-THC) and
opiates. The infant received routine resuscitation at birth and the
Apgar scores were 4 and 7, respectively. At birth the infant was noted
to have an extended neck and contractures of the extremities.
Radiographs were remarkable for cervical spine in severe extension
contracture, bilateral shallow acetabula with probable dislocated hips,
bilateral clubfeet, fingers with severe flexion contractures, and
dysplastic shoulders with probable dislocation. A head ultrasound
obtained on day of life (DOL) 2 was unremarkable. Physical therapy was
also instituted on DOL 2. Although the infant was noted to lie
peacefully at rest, the slightest movement produced significant pain
associated with a loud, shrill high-pitched cry. The infant was
initially started on as needed acetaminophen (10 mg/kg)
which was quickly converted to a regular (Q4 hour) dosing interval.
Symptomatic assessment on DOL 4 illustrated apparent failure of
acetaminophen,