Clinical Profile and Outcome in Children with Post Diphtheritic Paralysis in a Tertiary Care Hospital in Southern India

OBJECTIVES: Post-Diphtheritic Paralysis (PDP), one of the most severe complications of diphtheria, is caused by exotoxin of Corynebacterium diphtheria. This study was planned since there has been a resurgence of diphtheria in India in recent years due to a number of epidemiological factors. MATERIALS & METHODS: Thirty-five children with PDP were studied in a tertiary care hospital in Southern India. RESULT: Neurological complications occurred in 38.5% of 91 patients with faucial diphtheria. Of the patients, 13 (37.1%) were unimmunized, 12 (34.3%) were partially immunized, two (5.7%) were completely immunized, and eight (22.6%) had unknown status. Isolated bulbar palsy and bulbar palsy followed by limb weakness were seen in 20 (57.1%) and 15 (42.9%) of the patients, respectively. The first symptoms of PDP occurred 5-34 days after the onset of local diphtheria infection. Eleven (31.4%) out of the 35 patients had received antitoxin between days 5-7 of illness. Ventilation-dependent respiratory failure occurred in three (8.6%) patients with PDP. Nine (25.7%) patients had evidence of co-existent myocarditis, while myocarditis with renal failure was seen in two (5.7%) patients. Four (11.4%) patients died, three from severe cardiomyopathy and one from aspiration. Demyelinating neuropathy was noted in 64% of the patients. Children with bulbar palsy recovered in 4-7 weeks, while limb symptoms improved in 6-17 weeks. CONCLUSION: PDP should be considered in any child presenting with bulbar palsy/quadriparesis following previous history of fever/sore throat. Awareness and availability with timely administration of ADS within 48 hours are essential to reduce PDP, as antitoxin seems ineffective if administered after the second day of diphtheritic symptoms.