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Kaman L, Kundel B, Sinha SK, Singh R. True epiphrenic diverticulum of esophagus secondary to tubercular adenitis. Indian J Gastroenterol 2003; 22:65-6. [PMID: 12696830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ephiphrenic esophageal diverticulum is rare and usually is a pulsion-type pseudodiverticulum that occurs in association with motility disorders of the esophagus. We report a 35-year-old man with tubercular lymphadenitis causing true traction type of epiphrenic diverticulum. Esophageal diverticulectomy and esophagomyotomy was done; he is doing well on antitubercular drugs.
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152
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Kim H, Rühm A, Lurio LB, Basu JK, Lal J, Lumma D, Mochrie SGJ, Sinha SK. Surface dynamics of polymer films. PHYSICAL REVIEW LETTERS 2003; 90:068302. [PMID: 12633334 DOI: 10.1103/physrevlett.90.068302] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2001] [Indexed: 05/24/2023]
Abstract
The dynamics of supported polymer films were studied by probing the surface height fluctuations as a function of lateral length scale using x-ray photon correlation spectroscopy. Measurements were performed on polystyrene (PS) films of thicknesses varying from 84 to 333 nm at temperatures above the PS glass transition temperature. Within a range of wave vectors spanning 10(-3) to 10(-2) nm(-1), good agreement is found between the measured surface dynamics and the theory of overdamped thermal capillary waves on thin films. Quantitatively, the data can be accounted for using the viscosity of bulk PS.
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153
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Sethy PK, Sinha SK, Singh K. An accidentally swallowed toothbrush. Indian J Gastroenterol 2002; 21:237. [PMID: 12546186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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154
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Sinha SK. Class I towns in the urban process. JOURNAL OF SOCIAL AND ECONOMIC STUDIES 2002; 4:353-60. [PMID: 12337357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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155
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Hebbar KB, Sinha SK. Effect of external electrical field on mobile water fraction and physiological processes in wheat (Triticum aestivum) leaves. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 2002; 40:957-9. [PMID: 12597031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Experiments were conducted to study the effect of external electric field on physiological processes, moisture content and mobile water fraction in wheat leaves. Application of electric field increased the stomatal resistance immediately and it continued to increase upto 10 min. Photosynthesis and respiration of leaves decreased with the application of external electric field. Leaf moisture content and mobile fraction of water measured as relaxation times were marginally increased with electric field. Closure of stomata, in spite of maintaining higher leaf moisture content of the leaf with external electric field, suggested that electric field might have regulated stomatal movement through hormones or ion flux across the cells.
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156
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Hasan MZ, Montano PA, Isaacs ED, Shen ZX, Eisaki H, Sinha SK, Islam Z, Motoyama N, Uchida S. Momentum-resolved charge excitations in a prototype one-dimensional mott insulator. PHYSICAL REVIEW LETTERS 2002; 88:177403. [PMID: 12005784 DOI: 10.1103/physrevlett.88.177403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2001] [Indexed: 05/23/2023]
Abstract
We report momentum-resolved charge excitations in a one-dimensional (1D) Mott insulator studied using high resolution inelastic x-ray scattering over the entire Brillouin zone for the first time. Excitations at the insulating gap edge are found to be highly dispersive (momentum dependent) compared to excitations observed in two-dimensional Mott insulators. The observed dispersion in 1D cuprates ( SrCuO2 and Sr2CuO3) is consistent with charge excitations involving holons which is unique to spin-1/2 quantum chain systems. These results point to the potential utility of momentum-resolved inelastic x-ray scattering in providing valuable information about electronic structure of strongly correlated insulators.
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157
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Mondal SK, Guha D, Banerjee D, Sinha SK. Study of primary amenorrhoea with special reference to cytogenetic evaluation. INDIAN J PATHOL MICR 2002; 45:155-9. [PMID: 12696730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
An attempt has been made to find out the proportion of genetic causes in cases of primary amenorrhoea and to analyse different chromosomal pattern. Cases were analysed according to clinical profile, X-ray, laparoscopy/pneumography, hormone profile, USG, Gonadal Biopsy and Cytogenetic study including Sex Chromatin (Barr body) and Karyotyping. Among the 72 cases studied, the aetiological factors were Mullerian duct abnormalities in 27 cases (37.5%) Gonadal agenesis in 13 cases (18.05%). Turner stigmata in 18 cases (25%), Y cell line in 6 cases (8.33%). Delayed menarche in 4 cases (5.55%), systemic disease like Tuberculosis and Idiopathic 2 cases (2.77%) each. Chromosomal aberration was seen in 24 cases (33.33%) and it comes second most common cause of primary amenorrhoea after mullerian duct abnormalities.
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158
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Poddar U, Thapa BR, Sinha SK, Bhasin DK. Massive steatorrhea in a child due to isolated pancreatic hypoplasia. Indian Pediatr 2001; 38:1298-300. [PMID: 11721073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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159
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Keogh IJ, Sinha SK, Rowley H, O'Keane JC, Russell JD. Minor salivary glands: causing major problems. IRISH MEDICAL JOURNAL 2001; 94:243-4. [PMID: 11758627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
Tumours arising in the parapharyngeal space (PPS) are rare and account for approximately 0.5% of all head and neck neoplasms. These neoplastic processes represent a wide variety of both benign (80%) and malignant lesions arising from the diverse range of structures within and surrounding the PPS. The PPS is typically conceptualized as a potential neck space in the shape of an inverted cone with its base at the skull base and apex at the greater cornu of the hyoid. Because of this unique structure, lesions must often grow to a considerable size before symptoms become apparent and clinical detection is possible. A rare case of mucoepidermoid tumour of the minor salivary glands arising in the prestyloid parapharyngeal space is described. The complex anatomical and pathological considerations within this region present a substantial challenge to the head and neck surgeon in the evaluation and management of these lesions.
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Abstract
Development of sophisticated transducers and microprocessor-based ventilators now enables the performance of volume-controlled ventilation of newborn infants. Volume-controlled modes include standard intermittent or synchronized intermittent mandatory ventilation; assist-control ventilation; and hybrid modes, such as pressure-support ventilation, pressure-regulated volume-control ventilation, volume-assured pressure support, and volume guarantee. This article describes the concepts and clinical applications of these ventilatory modes.
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Abstract
For decades, the overwhelming majority of infants requiring mechanical ventilation for respiratory failure were treated with standard time-cycled, pressure-limited intermittent mandatory ventilation. Technologic advances in the 1990s brought forth sophisticated transducers and microprocessor-based mechanical ventilators that enabled implementation of many newer modes of mechanical ventilation. Some of these are volume-targeted rather than pressure-targeted, and many allow an element of patient control of the ventilator, including initiation and termination of inspiration and control of flow. Some modes are even hybrids, combining the best features of both pressure-targeted and volume-targeted modes. This article reviews the principles and salient clinical features of the newer ventilatory modes for newborns with respiratory failure.
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162
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Barry M, Sinha SK, Leader MB, Kay EW. Poor agreement in recognition of abnormal mitoses: requirement for standardized and robust definitions. Histopathology 2001; 38:68-72. [PMID: 11135049 DOI: 10.1046/j.1365-2559.2001.01034.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS The finding of abnormal mitoses is a helpful feature in differentiating between benign and malignant neoplasia and has prognostic significance for some tumours. As the use of a histopathological variable is limited by the reproducibility of its recognition, we tested the interobserver agreement in the classification of abnormal mitoses among histopathologists. METHODS adn RESULTS Ten practising histopathologists were shown 30 potential mitotic figures and were asked to classify these as 'normal mitoses', 'abnormal mitoses' or 'not mitoses' according to the criteria each pathologist used in their routine practice. The results were analysed using kappa statistics. Overall agreement was only fair with a combined kappa of 0.31 and there was unanimous categorization of only four of 30 test items, none of which was called abnormal. The poorest result was obtained for the category 'abnormal mitosis' with only slight agreement (kappa 0.19). Agreement for the other categories varied from moderate (kappa = 0.45) for 'not a mitosis' to fair (kappa = 0.26) for 'normal mitosis'. Comparison of the results for observer pairs showed that for 12 out of the 45 possible pairings, there was no more agreement than might be expected by chance alone. CONCLUSION Agreement is poor among practising histopathologists in the recognition of abnormal mitoses. A standardized and robust definition is needed if diagnostic and prognostic significance is accorded to the finding of an abnormal mitosis in the context of neoplasia.
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163
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Chakrabarti BK, Bhattacharyya N, Sinha SK. A Monte Carlo study of the critical behaviour of compressible Ising systems. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/15/23/010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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164
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165
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166
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Shewale JG, Richey SL, Sinha SK. Detection and correction of a migration anomaly on a 310 genetic analyzer. J Forensic Sci 2000; 45:1339-42. [PMID: 11110196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
During STR analysis on the 310 Genetic Analyzer, retarded migration of GS500ROX size standards and alleles in some samples was observed. The contribution of reagents, capillary and performance optimized polymer POP 4 to the observed anomaly was experimentally eliminated. Variation in electrophoresis temperature between 55 degrees C and 65 degrees C did not alter the rate of migration of GX500ROX size standard and sample alleles. An eroded connector for the cathode mounted on the heat plate assembly caused the abnormal migration. Hence, it is important to verify the mobility of all fragments in the size standard for each sample to avoid any erroneous allele calls by the automated data analysis software.
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167
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Tahir MA, Sinha SK, A-Al-Kubaidan N, Tahir UA, Budowle B, Amjad M. Distribution of amplified fragment length polymorphism D1S80 alleles in a Saudi Arabian population. J Forensic Sci 2000; 45:1159. [PMID: 11005197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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168
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Singh SK, Bhadada SK, Singh R, Sinha SK, Singh SK, Agrawal JK. Robinow syndrome. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2000; 48:836-7. [PMID: 11273483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Robinow syndrome is a rare congenital abnormality. It is characterized by mesomelic brachymelia, hemivertebrae, dysmorphic facies, genital hypoplasia, micropenis, clinodactyly, camptodactly, hypoplastic nails and moderate short stature. We are documenting the case on the account of its rarity and additional features.
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169
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170
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Bhasin DK, Sharma BC, Gupta NM, Sinha SK, Singh K. Endoscopic dilation for treatment of anastomotic leaks following transhiatal esophagectomy. Endoscopy 2000; 32:469-71. [PMID: 10863914 DOI: 10.1055/s-2000-12967] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND STUDY AIMS Anastomotic leak is a known complication after transhiatal esophagectomy (THE) and cervical esophagogastric anastomosis. Conservative management takes a long time to heal such leaks. We assessed the role of endoscopic dilation in patients with anastomotic leak following THE. PATIENTS AND METHODS Eight consecutive patients (seven men, one woman; mean age 51) with anastomotic leak following THE were subjected to endoscopic dilation using Savary Gilliard dilators of 7-15 mm diameter. The mean interval between surgery and detection of leak was 9 days (range 5-22 days) and dilation was performed at a mean interval of 11.4 days (range 1-20 days) after detection of the leak. RESULTS Drainage from fistulas stopped completely after 1-8 days (mean 3 days). X-ray with water soluble contrast showed closure of the fistula in all cases. Duration of follow-up ranged from 2 to 12 months. Anastomotic strictures developed in three patients. These patients required three sessions each of repeat dilation, and were alive at follow-up periods of 2, 4, and 12 months, respectively. One patient developed recurrence of growth at an anastomotic site. Four patients died because of distant metastasis. CONCLUSIONS Bougie dilation of anastomotic sites is a safe and effective technique for the healing of anastomotic leaks following THE. However there is a need for a prospective randomized trial comparing endoscopic dilation with no dilation in patients with anastomotic leaks following THE.
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171
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Singh V, Sinha SK, Nain CK, Bambery P, Kaur U, Verma S, Chawla YK, Singh K. Budd-Chiari syndrome: our experience of 71 patients. J Gastroenterol Hepatol 2000; 15:550-4. [PMID: 10847443 DOI: 10.1046/j.1440-1746.2000.02157.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Hepatic venous outflow obstruction (Budd-Chiari syndrome) is frequently encountered as a cause of portal hypertension at our centre. METHODS AND RESULTS We studied the clinical presentation, therapeutic modalities and outcome of 71 patients with hepatic venous outflow obstruction between 1992 and 1997. Twenty-seven patients presented with acute disease, while 44 had chronic presentation. Abdominal pain, distension, jaundice and upper gastrointestinal bleeding were the commonest presenting symptoms. The majority of patients had distended veins, hepatomegaly, splenomegaly, ascites and ankle oedema. The diagnosis was made on the basis of inferior vena cavography/functional hepatography and pulsed Doppler ultrasonography and/or liver biopsy in 39 patients and pulsed Doppler ultrasonography and/or liver biopsy in 32 patients. Pulsed Doppler ultrasonography accurately detected the site of the block in 31 of 39 patients (79.4%). The obstruction was in the hepatic vein in 20 patients, in the inferior vena cava in 10, and in both in 41 patients. Aetiologically, four had pregnancy-related disease, four tumour-related, three hypercoagulable states, 18 inferior vena cava membranes and 42 were idiopathic. Of 30 patients in whom liver biopsy was carried out, eight had centrizonal congestion and necrosis, 13 had mixed features and nine had established cirrhosis. Seven patients underwent a shunt operation and surgical membranotomy was carried out in one. Three patients (4.2%) died in the hospital. CONCLUSIONS Hepatic venous outflow obstruction is a common problem; patients present with abdominal pain, distension, jaundice, distended veins, ascites and ankle oedema. Chronic presentation is more frequent. Pulsed Doppler ultrasound, venography and liver biopsy are very helpful in diagnosis.
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172
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Sinha SK, Bapuraj R, Kumar S, Ray J, Sriram PV, Kochhar R, Singh K. Gastroduodenal artery pseudoaneurysm: metal coil embolization. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2000; 21:75-6. [PMID: 10881630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
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173
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Sinha SK, Kochhar R, Rana S, Bapuraj R, Singh K. Intestinal pseudo-obstruction due to neurofibromatosis responding to cisapride. Indian J Gastroenterol 2000; 19:83-4. [PMID: 10812823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Gastrointestinal involvement in neurofibromatosis presenting with mechanical obstruction, hemorrhage or intussusception is known. Small bowel dysmotility and intestinal pseudo-obstruction due to neurofibromatosis is rare. A 23-year-old man with classical neurofibromatosis presented with intermittent episodes of intestinal pseudo-obstruction, small bowel bacterial overgrowth and steatorrhea. The patient had good symptomatic improvement with cisapride.
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174
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Bhasin DK, Sinha SK. Comparing the treatment outcomes of endoscopic papillary dilation and endoscopic sphincterotomy for removal of bile duct stones. Gastrointest Endosc 1999; 50:886-8. [PMID: 10644185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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175
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Sinha SK, Keogh IJ, Russell JD, O'Keane JC. Sclerosing mucoepidermoid carcinoma of minor salivary glands: a case report. Histopathology 1999; 35:283-4. [PMID: 10469225 DOI: 10.1046/j.1365-2559.1999.0781e.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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