Browsing by Author "Tewari, S C"
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Item Angiosarcoma of the heart.(1987-10-01) Chauhan, M S; Chopra, R K; Jayaswal, R; Tewari, S CItem Anopheles culicifacies species complex in Thenpennaiyar riverine tract, Tamil Nadu.(1983-04-01) Suguna, S G; Tewari, S C; Mani, T R; Hiriyan, J; Reuben, RItem Biological profile of 1, 2-diethyl-1, 3-bis-(p-methoxyphenyl-1-propene-A new oral non-steroidal contraceptive.(1980-06-01) Prakash, A O; Ghosh, M; Tewari, S C; Rastogi, S N; Roy, S KItem Control of Anopheles stephensi with larvicide and adulticide in Salem, Tamil Nadu.(1981-01-01) Batra, C P; Reuben, R; Kaur, R; Tewari, S C; Veeraraghavan, K; Palani, G; Jesuvan Singh, SItem Dengue fever caused by dengue virus serotype - 3 (subtype-III) in a rural area of Madurai district, Tamil Nadu.(2010-09) Paramasivan, R; Dhananjeyan, K J; Leo, S Victor Jerald; Muniaraj, M; Thenmozhi, V; Rajendran, R; Tewari, S C; Arunachalam, N; Varatharaj, M; Victor, T John; Charles, Janshi; Ilango, S; Tyagi, B KItem Density of Anopheles culicifacies Giles in relation to control measures along the river Thenpennai (Tamil Nadu).(1984-07-01) Mani, T R; Tewari, S C; Reuben, R; Devaputra, M; Hiriyan, JItem Effect of oral propranolol, intravenous mannitol and oxygen inhalation on ST segment mapping in acute myocardial infarction.(1983-03-01) Das, B K; Ohri, V C; Parashar, S K; Tewari, S C; Sindhi, J C; Chatterji, J CItem Electrocardiographic changes at high attitude.(1983-01-01) Das, B K; Tewari, S C; Parashar, S K; Akhtar, M; Grover, D N; Ohri, V C; Dutta, S K; Chatterjee, J CItem Enlarging pulmonary histoplasmoma associated with pulmonary tuberculosis.(1989-12-01) Tewari, S C; Chauhan, M S; Jayaswal, R; Rajan, R S; Ahuja, J MHistoplasmosis is not a frequently reported infection from India. Similarity of its clinical and radiological features with pulmonary tuberculosis, may cause a difficult diagnostic dilemma when the two occur together. We report a case who initially presented with cavitary lesions over right lung responding well to anti tuberculosis chemotherapy but subsequently a small opacity present over the left upper zone showed a relentless increase till it attained a massive size few years later. Operative removal and histopathological examination of the mass confirmed it to be histoplasmoma. She became sputum AFB smear positive and culture negative for a short while during this period and this is explained on the basis of previous reports.Item Epidemiological aspects of persistent malaria along the river Thenpennai (Tamil Nadu).(1984-07-01) Tewari, S C; Appavoo, N C; Mani, T R; Reuben, R; Ramadas, V; Hiriyan, JItem Evaluation of malathion space-spray as a supplementary control measure against Anopheles culicifacies Giles.(1987-07-01) Mani, T R; Rajendran, R; Sarangapani, T D; Tewari, S C; Narayanasamy, G; Devaputra, M; Pillai, P K; Reuben, RItem Excessive polycythaemia of high altitude. Pulmonary function studies including carbon monoxide diffusion capacity.(1991-06-01) Tewari, S C; Jayaswal, R; Kasthuri, A S; Nath, C S; Ohri, V CPulmonary function studies were done in 21 soldiers (low landers) posted at high altitude (average height 4773 metres) for prolonged periods (average 77.09 months), who had developed excessive polycythaemia, mean haemoglobin concentration being 23.06 g/dl. Studies revealed significant reduction in diffusion capacity of lungs which gradually returned to normal on sojourn at low altitudes for 70 days. Both the degree of polycythaemia and reduction in lung diffusion capacity were much more pronounced in smokers than in non-smokers. Vital capacity did not show any difference in these subjects while forced expiratory volume in 1 sec and ratio of forced expiratory volume to vital capacity (FEV1/VC) revealed only obstructive features in smokers.Item Exercise induced ventricular arrhythmias and effects of suppressive therapy with propranolol and verapamil.(1982-05-01) Tewari, S C; Das, B K; Parashar, S K; Prabhakaran, S N; Grover, D N; Rastogi, D SItem Feeding behaviour, age structure & vectorial capacity of Anopheles culicifacies Giles along the river Thenpennai (Tamil Nadu).(1984-07-01) Reuben, R; Mani, T R; Tewari, S CItem Host selection patterns in anophelines in riverine villages of Tamil Nadu.(1984-07-01) Tewari, S C; Mani, T R; Suguna, S G; Reuben, RItem Lung function in mitral stenosis.(2000-10-24) Chatterji, R S; Panda, B N; Tewari, S C; Rao, K SOBJECTIVES: The aim of this study was to look to for a relationship between pulmonary artery pressure (PAP), left atrial pressure (LAP), mitral valve area (MVA) and transmitral gradient (Gr) on the one hand and the spirometric data on the other, in cases of mitral stenosis. METHODS: The spirometry values measured were forced vital capacity (FVC), forced expiratory volume in one second and as percent of FVC (FEV1, FEV1/FVC%), forced expiratory flow between 25% to 75% of FVC (FEF 25-75%), at 50% of FVC (FEF 50%) 75% of FVC (FEF 75%) and peak expiratory flow rate (PEFR). The PAP, LAP, MVA and Gr were measured at echocardiography and cardiac catheterisation. RESULTS: Analysis of results was done of 60 patients in four groups divided on basis of mean PAP: Group 1 with least and group 4 with highest mean PAP. FVC values were reduced in direct proportion to PAP, LAP, MVA and Gr in three out of four groups. FEV1% as a percent of predicted value showed uniform reduction in all the groups, PEFR was moderately affected in group 1 and most severely in group 4. Values of FEV1/FVC% were within normal range in all the groups. FEF 25-75%, and FEF 50% showed serial reduction in values in keeping with the elevation of the PAP. FEF 75% was also moderately affected in group 1 and most severely in group 4. CONCLUSION: We found that a moderate restrictive defect and a small airway defect which is found in cases of mitral stenosis, directly correlates to the PAP, LAP, MVA and Gr. There was no significant involvement of the larger airways.Item Malignant mesothelioma in the young (with prosthetic aortic valve an unusual association).(1989-02-01) Tewari, S C; Kurian, G; Jayaswal, R; Chakravorty, S; Chadha, S K; Chauhan, M SA case of malignant mesothelioma (MM) in a 15 year old boy is reported. He had a prosthetic aortic valve implanted in 1980 at our centre for rheumatic aortic regurgitation. Fever, weight loss and chest pain as initial symptoms suggested possibility of prosthetic valve endocarditis. Dysphagia as another initial symptom was interesting and caused further diagnostic dilemma. Role of Computerised Tomography (CT) scan in diagnosis of MM is highlighted.Item Mating behaviour of Anopheles culicifacies Giles in small cages, with some developments in rearing methods.(1979-07-01) Tewari, S C; Reuben, RItem Morgagni's hernia in an asymptomatic individual.(1987-07-01) Chauhan, M S; Chopra, R K; Jayaswal, R; Tewari, S CItem Natural vertical transmission of dengue viruses by Aedes aegypti in Chennai, Tamil Nadu, India.(2008-04-26) Arunachalam, N; Tewari, S C; Thenmozhi, V; Rajendran, R; Paramasivan, R; Manavalan, R; Ayanar, K; Tyagi, B KBACKGROUND & OBJECTIVE: Dengue viruses are spread and maintained in an Aedes aegypti-human- Ae. aegypti cycle in urban areas of the tropics. Dengue viruses are also maintained in nature by vertical transmission by Ae. aegypti. A study was undertaken in Chennai, a known endemic city in south India, to comprehend the natural vertical transmission dynamics in Ae. aegypti and to assess its epidemiological importance. METHODS: Ae. aegypti males collected in resting and landing collections were tested for dengue virus infection by antigen-capture enzyme-linked immunosorbent assay (ELISA) and further examined by insect bioassay, Toxorhynchites splendens inoculation-indirect immunofluorescence technique (Toxo-IFA) using serotype-specific monoclonal antibodies (Mabs), if found positive by ELISA. RESULTS: Of the 509 pools of Ae. aegypti males (n=5408) screened, 15 pools, collected in April, June- July, November-December in 2003 and March, May in 2004, were found positive for dengue virus infection and the minimum infection rate (MIR) among adult males was high in June 2003 (28.0/ 1000). Three positive pools could be serotyped as dengue-2 (2 pools) and dengue-3 (1 pool). INTERPRETATION & CONCLUSION: Dengue virus isolations from wild caught males of Ae. aegypti indicate the occurrence of transovarial transmission. Vertical transmission was mainly observed in summer months when dengue infections in humans were low suggesting that dengue viruses adopt a novel strategy of surviving adverse climatic conditions.