An open, randomized, comparative study of efficacy and safety of risperidone and haloperidol in schizophrenia.

OBJECTIVES: In the last decade there have been numerous randomized controlled trials comparing the efficacy and safety of second generation antipsychotics and conventional antipsychotics in the treatment of schizophrenia, but most of them have been conducted in the western population. This study compared the efficacy and safety of risperidone versus haloperidol in the Nepalese context, in order to add on to the very few literatures available on this topic in the South East Asia region and compare them. METHODS: Patients with the diagnosis of schizophrenia were randomly assigned to receive risperidone 4-6 milligrams (mg) per day and haloperidol 10-20 mg per day, and were followed up for 6 weeks. Assessment were done on the day of the diagnostic interview and days 7, 14, 28 and 42 (end point). During the assessment periods Positive and Negative Syndrome Scale (PANSS) was administered to monitor the progress in psychopathology and Udvalg for Kliniske Undersogelser (UKU) side effects rating scale was applied to rate the treatment emergent adverse effects. RESULTS: Both risperidone and haloperidol were associated with substantial baseline- to- endpoint reduction in symptom severity. After one week of treatment, the improvement in schizophrenia with risperidone was significantly better than haloperidol in terms of PANSS- total Score (-45.4 versus -29.5), negative subscale score (-14.3 versus -6.68) and general psychopathology subscale score (-20.9 versus -13.7). At the end point of the study, the benefit was maintained in total score (-52.1 versus -43.1), though the negative subscale score still showed tendency for greater improvement in psychopathology with risperidone. The side effects profile did not show significant differences except in extrapyramidal symptoms. Thirty-eight percent of risperidone treated patients had to resort to anti-parkinsonian treatment compared to 78% in haloperidol treatment group. CONCLUSION: Similar to the studies in the western countries, Asia and Indian subcontinent, both risperidone and haloperidol were effective in the reduction of psychopathological symptoms in this group of Nepalese population with the diagnosis of schizophrenia. However, risperidone was quicker and better then haloperidol and risperidone had a better safety profile. This is important, because extrapyramidal side effects of neuroleptics are responsible for non-compliance and increased cost in terms of us of anti-parkinsonian medication.

Gender variations in the prevalence of parasitic infections and the level of awareness in adolescents in rural Nepal.

The study was conducted in rural school adolescent children to investigate the awareness and its association in parasitic infections in boys and girls. Of the 182 children examined 119 (65.3%) were male and 63 (34.6%) were female, age ranged 12-20 years with median age 15 years. Out of 182 stool samples examined 73 (40%) were found to be positive for parasites in which two or more parasites were found in 10 stool samples. Giardia lamblia 33 (18.1%) was the predominant parasite followed by hook worm 27 (14.8%) Entamoeba histolytica 13 (7.1%), Ascaris lumbricoides 05 (2.7%), Hyminolepis nana 02 (2.2%) and Trichuris trichiuria 01 (0.5%). Thirty-one (49.2%) in 63 females and 40 (33.6%) of the 119 males were positive for parasitic infections. The prevalence of worm infection was significantly higher in female children than male (p < or = 0.05). In contrast to the high parasitic prevalence rate in females they possessed significantly higher levels of awareness about parasitic infections. Out of 119 males 99 (83.2%) and 61 (96.8%) of the 63 females (p < or = 0.05) knew that worms suck food from host body. Similarly, 62.2% of males and 96.85 of females (p < or = 0.05) knew that parasites suck blood from human body. More study should be carried out to find out the gender difference in parasitic infection and level of exposure to risk factors.