Clinical Profile and Outcome of Childhood Tuberculosis at Dhulikhel Hospital.

Background: Children contribute a significant proportion of the tuberculosis (TB) burden in Nepal and suffer severe TB related morbidity and mortality, particularly in endemic areas. Diagnosis and management of pediatric TB especially Extra pulmonary TB (EPTB) is challenging. Objectives: The present study was designed to study clinical, laboratory characteristics and outcome of childhood tuberculosis. Methods: A prospective analysis of 60 cases of TB children within three years period was conducted at Pediatric Department, Dhulikhel Hospital and followed up till child completely recovered. Results: In the present study 60 children had clinical and lab evidence of tuberculosis and received anti tubercular therapy. Extra pulmonary tuberculosis was common (78.3%) than pulmonary tuberculosis (21.6%). BCG scar was absent in eight (13.33%) and absent BCG vaccination was significantly associated with disseminated TB (p<0.05). The most frequently seen symptoms were fever (65 %), cough (46.67 %) and abdominal distension (36.67%). Hepatomegaly (45%), ascites (33.33%), lymphadenopathy (23.33 %) and splenomegaly (11.67 %), and are common signs. Malnutrition seen in (33.3%) with more malnourished children with disseminated TB than in other diagnosis (p<0.001). Mantoux test was positive in (48.3%). Isolation of AFB was possible only in (8.33%). Among 60 cases (60%) were recovered completely with the primary regimen, (5%) recovered with extending the duration of primary regimen to three more months. (25%) failed to follow up, while (6.67%) died. Conclusion: EPTB is common than pulmonary TB. Among 60 cases 36 (60%) recovered completely with the primary regimen, three cases (5%) recovered with extending the duration with primary regimen. Fifteen cases (25%) failed to follow up, while four cases (6.67%) died.

Pleural effusion in hepatic vena cava disease.

Pleural effusion is not uncommon in developing countries. It is usually considered to be due to tuberculosis and treated with anti-tubercular chemotherapy without much diagnostic workup. Hepatic vena cava disease (HVD), a disease caused by obliterative lesion of the hepatic portion of inferior vena cava induced by bacterial infection is common in developing countries. We report here the occurrence of pleural effusion in 10% of the cases of HVD. Four patients, one with acute and three with chronic HVD that presented with pleural effusion are described. Pleural effusion in HVD responded to treatment with antibiotic and diuretic. In developing countries HVD should be considered in the differential diagnosis of pleural effusion. It is postulated that bacterial infection and sodium retention resulting from acute caval obstruction are important in the pathogenesis of pleural effusion in HVD.

Visual outcome of laser treatment in diabetic retinopathy.

OBJECTIVE: To determine the visual outcome of laser treatment in diabetic retinopathy. DESIGN: Prospective, non-comparative case series. MATERIALS AND METHODS: A total of 80 eyes of 50 patients with diabetic retinopathy in different stages were photocoagulated using diode green laser. Focal laser only was given in 46 eyes and pan retinal photocoagulation only was given in 29 eyes while 3 eyes received focal laser and pan retinal photocoagulation. One eye was given grid laser only and one eye received both grid and focal laser. The best corrected visual acuity was noted and fundus examination was carried out prior to laser therapy and at the last follow-up and results were compared. RESULTS: Non- proliferative diabetic retinopathy was present in 76%. Following laser treatment, best corrected visual acuity improved in 52.50%, remained static in 35% and deteriorated in 12.5%. Maculopathy improved in 52%, remained static in 6% and deteriorated in 2% in right eyes while there was no maculopathy in 40% in right eyes. Similarly, maculopathy improved in 38% and remained same in 10% while 52% had no maculopathy in left eyes. After laser treatment, NVD (OD) regressed in 6% and remained unchanged in 4%. Similarly, NVE (OD) regressed in 18% and remained unchanged in 4% and NVE (OS) regressed in 18% and remained unchanged in 2% following laser therapy. CONCLUSION: Timely and adequate laser treatment helps in saving the vision in patients with diabetic retinopathy.

Hepatitis E in Nepal.

Hepatitis E is an acute disease caused by hepatitis E virus that usually manifest as acute jaundice. The hallmark of the disease is its high incidence in young adults, and high mortality in pregnant women from acute hepatic failure. It is a waterborne infection and occurs sporadically or as epidemic outbreaks. Kathmandu valley is a hyper-endemic area for hepatitis E, where during last 30 years three large epidemics and many focal outbreaks have occurred. About 50% of the sporadic cases of acute hepatitis in Kathmandu valley are caused by hepatitis E. This paper describes the epidemiology hepatitis E in Nepal, and its clinical features and management.

High prevalence of hepatitis B virus infection amongst Tibetans in Nepal.

Tibetans have been living in Nepal since 1959. Study of the prevalence of viral hepatitis among them showed that they have a high prevalence of hepatitis B virus (HBV) infection. Prevalence of total HBV infection and Hepatitis B surface antigen (HBsAg) among them was 61% and 16% compared to 10.0% and 0.7% respectively among the Nepalese. The predominant HBsAg subtype among the Tibetans was 'ayw'. Perinatal and childhood transmission was found important in the spread of HBV infection among the Tibetans.

Acute on chronic phenomenon in hepatic IVC obstruction: a case report.

Hepatic IVC obstruction though common is usually misdiagnosed because of lack of appreciation of the disease. Patient with chronic disease may develop acute exacerbation, which may be precipitated by surgery or endoscopic procedures. It is a report of a case of chronic IVC disease with acute development of ascites following gallbladder surgery.

Epidemiology of hepatitis C virus infection in Nepal.

Prevalence of hepatitis C virus (HCV) infection in Nepal was studied by assaying sera from different population groups for anti-HCV by the second generation enzyme immunoassay method and for HCV RNA by polymerase chain reaction. The anti-HCV was positive in 0.6% of 2,860 healthy adults. HCV infection was responsible for 1.3% of acute viral hepatitis. Only drug addicts (DA) are known to have a very high incidence of the infection. The number of intravenous drug abusers (IDA) in Nepal have increased considerably since 1991 when buprenorphine (tidigesic) was introduced in the local market. About 72% of the drug addicts were found to be IDA and 94% of the IDA were anti-HCV positive. It is concluded that though the prevalence of HCV infection in the community is low, and at present it accounts for only a small number of acute and chronic liver diseases, the presence of a large number of DA in the country with high incidence of HCV infection may result in the emergence of HCV as an important cause of chronic liver disease in Nepal in future.

Hepatitis B and C infection among drug abusers in Nepal.

Prevalence of hepatitis B and C virus infection amongst intravenous drug users (IDU) in Nepal is not known. To estimate such prevalence 72 IDU individuals were tested for HBV and HCV markers. About 80% of the drug abusers are both anti-HBc (59/72) and anti-HCV (58/72) sero-positive. However persistent infection with hepatitis B, as indicated by positive HBsAg, was detected in only 5.5% (n = 4). Active hepatitis C infection, as indicated by HCV RNA positivity, was documented in 74% (42/58) of those who were anti-HCV positive. Importance of awareness of this observation among the healthcare workers in the prevention of hepatitis C in the community is stressed.

Hepatic venous outflow obstruction in Nepal.

Intra hepatic inferior venacaval (IVC) obstruction at the site or just above hepatic vein opening in the IVC, is a common hepatic problem in Nepal. These patients either present as a chronic IVC obstruction with insidious onset or may present with rapid onset disease (acute/subacute disease). The former type may be asymptomatic (20%) or may have features of chronic liver dysfunction. The latter presents with rapid onset ascites. Presence of hepatomegaly with flank/back veins are characteristic clinical features of the disease. The disease is invariably encountered amongst rural poor, alcoholic and in the peripartum period. Ultrasonography, IVC graphy hepatogram and liver biopsies are the usual diagnostic modalities. Twenty four percent of the 126 chronic hepatic IVC disease had associated liver cell cancer at our centre. The aetiology of the disease is unclear. Presently it is believed that local thrombophlebitis in IVC causes such obstruction. Despite, surgical and radiological intervention, the ideal management in such patients is yet to be established. We believe conservative therapy, particularly prevention and early therapy of sepsis in such patients prolongs survival.

Seroepidemiology of hepatitis B in Nepal.

To assess the prevalence of BHV infection in Nepal sera of 2,555 healthy individuals of different age groups from different parts of the country were examined for the markers of the infection. BHsAg and anti-HBs were assayed by R-PHA and PHA methods respectively and anti-HBc by ETA method. Anti-HBc was positive in 43.5 per cent of 2,555 sera of healthy individuals in Nepal. HBsAg was in 0.9 per cent (1.5 per cent in male and 0.5 per cent in female) and anti-HBs in 7.7 per cent (7 per cent in male and 8 per cent in female). The prevalence of HBsAg and anti-HBs was higher in urban than in rural areas, and the highest prevalence of these markers was noted in health care personnels (HBsAg 2.6 per cent and anti-HBs 17 per cent). HBsAg was not detectable in infants and young children, and the highest prevalence rate was observed in 6 to 15 years age group. The main mode of spread of HBV infection in Nepal was the horizontal transmission in pre-adolescent and adolescent children. HBV infection is common in Nepal but the BHsAg carrier rate is much lower than reported from other Asian countries.