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Rupa Singh

Publications and source records attributed to Rupa Singh.

12 recordsLinked to original sources
PubMed2006

Epidemiological dynamics of antimonial resistance in Leishmania donovani: genotyping reveals a polyclonal population structure among naturally-resistant clinical isolates from Nepal.

Pentavalent antimonials (SbV) are the first line drug against leishmaniasis worldwide, but drug resistance is increasingly reported, particularly in the Indian sub-continent, where it represents a major threat for the control of anthroponotic visceral leishmaniasis (VL). In order to understand the epidemiological dynamics of antimonial resistance in anthroponotic VL, we analysed here the population structure of 24 Leishmania donovani stocks isolated from anthroponotic VL-patients from Eastern Nepal: 13 SbV-naturally resistant and 11 SbV-sensitive, as demonstrated by in vitro drug susceptibility assays. The parasites were genotyped by PCR-RFLP analysis of kDNA minicircles and by microsatellite analysis and the encountered polymorphism revealed a polyclonal structure among resistant isolates. Furthermore, analysis of paired samples obtained from the same patients before treatment and after failure revealed primary as well as acquired resistance. The hypothesis of independent events of drug resistance emergence is proposed and confronted to alternative explanations. Our results show the dynamics of drug resistance epidemiology and highlight the importance of surveillance networks.

Amphotericin B↗
PubMed2006

Exchange transfusion: a low-cost alternative for severe childhood Guillain-Barré syndrome.

The high cost and nonavailability of plasmapheresis and intravenous immunoglobulin are prohibitive for the treatment of Guillain-Barré syndrome in resource-poor settings. Exchange transfusion can be an alternative therapy for severe disease in children. The effectiveness of exchange transfusion was evaluated in nine children (median age 6 years) with severe Guillain-Barré syndrome (functional disability score >/= 4). All patients had lower limb weakness for a median duration of 4 days (range 2-16 days). Upper limb weakness (n = 8), respiratory involvement (n = 7), pooling of oral secretions (n = 3), and facial palsy (n = 1) were other motor signs. Four children developed respiratory failure; three were ventilated. Other clinical features included leg pains, meningismus and Lasàgue's sign, backache, excessive sweating, and hemodynamic instability. Two children had albuminocytologic dissociation on cerebrospinal fluid analysis. Nerve conduction velocity testing was done in three patients; two had suggestive findings. One course of exchange transfusion could be performed in seven patients. Six children (86%) responded well with one or more of the following: a halt in progressive motor weakness, improvement in leg pains, meningismus, and straight-leg raising within 24 to 48 hours; one could be weaned off the ventilator by 60 hours. All had improvement in motor power of at least one muscle group by one grade within 3 to 7 days. Two patients died, whereas five (71% of the treatment group) were discharged and could walk independently by 4 months. Two untreated ones had died. Exchange transfusion seems to be a safe and effective alternative for severe Guillain-Barré syndrome. It should be offered whenever intravenous immunoglobulin or plasmapheresis is not available or affordable. Replacement of immunosaturated red cells, removal of activated T cells and monocytes, and transient thrombocytopenia are possible explanations for its effectiveness in addition to removal of pathogenic autoantibodies, immune complexes, cytokines, and complements.

Child↗
PubMed2006

Clinico-laboratory profile and outcome of Japanese encephalitis in Nepali children.

BACKGROUND: Japanese encephalitis (JE) is associated with high mortality and neurological sequelae. The unpredictable course and lack of specific treatment pose major challenges in management. The tropical climate and paddy ecosystem in Nepal provide a suitable setting. AIMS: To determine the aetiology of febrile encephalopathy and describe the clinico-laboratory profile and outcome of JE in Nepali children. METHODS: A hospital-based prospective and observational study was conducted over a 1-year period (2000-2001). Children aged from >1 month to 14 years with fever >38 degrees C for <2 weeks and altered sensorium were recruited. JE was confirmed by anti-JE IgM in cerebrospinal fluid and/or serum. RESULTS: Of 117 consecutively enrolled patients, 58 had JE. Ten patients had concomitant infections, four with malaria and six with bacterial meningitis, and were excluded from analysis. Clinical findings were as follows: boys, 69%; age 4-14 years, 71%; presentation during summer and autumn, 83%; fever >3 days, 69%; altered sensorium <2 days, 50%; Glasgow coma score 8-12, 63%; seizures, 58%. Four (8.3%) died. At discharge, neurological sequelae were detected in 24 (50%) and hemiparesis was the most common form. Longer duration of vomiting, altered sensorium and focal neurological deficit on admission were independently associated with sequelae at discharge. Sequelae persisted in nine (18.8%) at 6 weeks follow-up. Long duration of altered sensorium (beta co-efficient 0.35, odds ratio 1.4, p=0.042) and presence of focal neurological deficit on admission (beta co-efficient 1.6, odds ratio 5.2, p=0.049) were independent predictors of sequelae at 6 weeks. CONCLUSION: JE was the commonest cause of febrile encephalopathy. Neurological sequelae were common but resolved in two-thirds of cases.

Adolescent↗
PubMed2006

Knowledge, attitude and practices of mothers regarding home management of acute diarrhoea in Sunsari, Nepal.

In Nepal, 45,000 children less than five years age die due to diarrhoea annually. Home management of diarrhoea is the hallmark of control of diarrhoeal diseases program in Nepal, which also aims to increase the correct use of Oral Rehydration Solution (ORS) by mothers, so mothers play a great role in the reducing the morbidity and mortality of children. The aim of the study was to assess knowledge, attitude and practices of the mother regarding home management of acute diarrhea in their children. The list of 330 children on Plan 'A' treatment was prepared at 11 peripheral health institutions of Sunsari district. Their identification data were recorded by health workers. The mothers were interviewed by the same health worker at the time of home visit after 24 hrs to know the improvement in the child and also preparation and use of ORS. Majority (97.6%) of the mother had information about ORS and also its usefulness in the management of dehydration due to diarrhea. Fifty percent mothers could make ORS properly and gave ORS to their children ideally (after each stool). The correct preparation and ideal use of ORS have not reached in proper way to the mothers of Sunsari district. Use of ORS definitely lowers the mortality due to dehydration, an effect that can clearly be seen in the short term. Intervention such as increasing women's literacy, improving basic sanitation and health care services, and raising the general nutritional status of the population can only be expected to decrease the diarrhoeal diseases morbidity and mortality in long term.

Acute Disease↗
PubMed2005

Acute renal failure following multiple wasp stings.

We report the cases of two patients who developed acute renal failure following multiple wasp stings. Both patients required dialysis and recovered within 4 weeks. The kidney biopsy from one patient showed acute tubular necrosis with interstitial nephritis. One patient had complete recovery of renal function on follow-up, while the other was lost to follow-up.

Acute Kidney Injury↗
PubMed2005

Lateral sinus thrombosis in neurocysticercosis.

Cysticercosis is a frequent parasitic infection in developing countries including Nepal and is related to poverty, ignorance and pig-rearing practices at home in the community. A variety of structural involvements such as brain parenchyma, cerebellum, ventricular system, brain stem, meninges, subarachnoid space, spinal cord and orbit have been reported, but cysticercus involving the lateral sinus causing thrombosis is extremely rare.

Adolescent↗
PubMed2005

Sodium stibogluconate and polymorphic ventricular tachycardia.

Numerous antimicrobials including pentavalent antimonials are implicated in causing prolong QT-interval and ventricular tachycardia. Torsades de pointes is rarely documented with use of sodium stibogluconate. Here is described a 12-yr-old girl with visceral leishmaniasis, who developed syncopal attacks, prolong QT-interval, polymorphic ventricular tachycardia and torsades de pointes after completing a course of Stibogluconate (20 mg/kg/day for 30 days). Prolong lidocaine infusion and cardioversion were life saving.

Anti-Arrhythmia Agents↗
PubMed2004

A comparative study of the effectiveness of diagnostic tests for visceral leishmaniasis.

We compared the validity of pancytopenia, the formol-gel test (FGT), the indirect fluorescence antibody test (IFAT), the direct agglutination test (DAT), and the rK39 dipstick test as diagnostic criteria for visceral leishmaniasis (VL) in Nepal. Between September 2000 and January 2002, 310 clinical suspects had a bone marrow aspirate, and if negative, a spleen aspirate smear examined for Leishmania donovani. Sensitivity and specificity of all tests were determined compared with parasitology and by latent class analysis (LCA). Compared with parasitology, the sensitivities of the other tests were as follows: pancytopenia = 16.3% (95% confidence interval [CI] = 11.3-22.5%), FGT = 39.9% (95% CI = 32.7-47.4%), IFAT = 28.4% (95% CI = 22.0-35.5%), DAT = 95.1% (95% CI = 90.8-97.7%), and the rK39 dipstick test = 87.4% (95% CI = 81.7-91.9%). Sensitivity estimates obtained by LCA were similar, but specificity estimates were substantially higher (DAT = 93.7% versus 77.8%; rK39 dipstick test = 93.1% versus 77.0%). The DAT or the rK39 dipstick test can replace parasitology as the basis of a decision to treat VL in Nepalese peripheral health services.

Adolescent↗