West syndrome: the Philippine experience.

OBJECTIVE

To provide information on the current status of West syndrome (WS) in the Philippines.

METHODS

This is a retrospective review of WS cases from January 1997 to December 1999 from two largest referral government institutions. A questionnaire interview survey on anticonvulsant usage was also conducted among practicing child neurologists.

RESULTS

Twelve patients diagnosed to have infantile spasms at 2-15 months were included, with a male:female ratio of 1:1. The proportion of WS cases among epileptic children under age 3 was 3.18%. The etiologies were idiopathic/cryptogenic in four (33%) and symptomatic in eight (66%). Symptomatic cases include hypoxic-ischemic encephalopathy, neonatal sepsis, bacterial meningitis, inborn error of metabolism, congenital brain anomaly and intracranial hemorrhage. Phenobarbital was the first line drug in 75% of cases. Other drugs used were valproic acid, clonazepam and pyridoxine. With a follow-up duration of 1-40 months, only three patients became seizure free and most had poor neurodevelopmental outcome. Among practicing child neurologists, the preferred ideal drug was adrenocorticotrophic hormone (ACTH) and valproic acid for idiopathic and symptomatic cases, respectively. However, in actual clinical practice valproic acid or prednisone was the initial drug used. Pyridoxine was usually added on.

CONCLUSIONS

The proportion of WS in our patient population may not reflect the true prevalence in our country since our data came from a biased population, i.e. referral centers. A national statistics is currently not available. ACTH, which was perceived by most child neurologists as the ideal first line drug was not used primarily because it is unavailable and unaffordable. The poor seizure control and developmental outcome may be due to the treatment given or directly related to the etiology of WS.