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Patil S, Rao RS, Majumdar B. Single gene disorders with craniofacial and oral manifestations. J Contemp Dent Pract 2014; 15:659-71. [PMID: 25707843 DOI: 10.5005/jp-journals-10024-1596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Gene and environmental factors are instrumental in genesis of complex and wide range of disorders and syndromes. The newer gene sequencing and other advanced technologies have made our previous knowledge of genetic etiopathogenesis of various disorders more transparent. Single gene disorders refer to the disorders caused due to mutations in a single gene and a fair number of these manifest as craniofacial defects and anomalies. This review is an attempt to give a detailed insight into the varied single gene disorders and syndromes with an emphasis on dental implications.
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Patil S, Rao RS, Majumdar B. Chromosomal and multifactorial genetic disorders with oral manifestations. J Int Oral Health 2014; 6:118-25. [PMID: 25395808 PMCID: PMC4229819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 06/13/2014] [Indexed: 11/15/2022] Open
Abstract
The chromosomal disorders are individually rare, but collectively they are common whereas the multifactorial disorders are the most common form of genetic disorders. The chromosomal anomalies typically arise from alterations in the DNA containing chromosomal regions and can be reliably detected by karyotype analysis, whereas the multifactorial disorders demonstrate multi-gene as well as environmental interactions. Both the chromosomal and multifactorial disorders may manifest signs and symptoms such as a combination of birth defects, physical disabilities, challenging behavior and certain craniofacial defects as well, the knowledge of which can aid in a better patient management in everyday practice of dentistry.
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Gon S, Basu A, Majumdar B, Das TK, Sengupta M, Ghosh D. Spectrum of histopathological lesions in the fallopian tubes. JOURNAL OF PATHOLOGY OF NEPAL 2013. [DOI: 10.3126/jpn.v3i5.7858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: Fallopian tubes are common surgical specimen in the pathology laboratory; still there is a lack of data to describe the frequency of various histological fi ndings. The aim and objectives of this study was to describe the various histopathological fi ndings of fallopian tubes. Materials and Methods: Two thousand fi ve hundred and seventy fi ve cases where fallopian tubes were removed either separately or along with other female genital tract organs were studied retrospectively and their histopathological fi ndings documented. Results: Ectopic pregnancy comprised maximum number of cases closely followed by salpingitis. Primary neoplastic lesions were rare as compared to secondary malignancies. Serial sections of fallopian tube and sections from representative areas are essential for a pathologist so that the diagnosis of these pathological entities is not missed. Conclusion: Though the fallopian tubes remain unremarkable in majority of the surgical pathological specimens, it must be subjected for histopathological examination to demonstrate the pathological lesions. Journal of Pathology of Nepal (2013) Vol. 3, No.1, Issue 5, 356-360 DOI: http://dx.doi.org/10.3126/jpn.v3i5.7858
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Gon S, Majumdar B, Bhattacharyya A, Bhattacharya RN. Fibrous dysplasia: rapid malignant transformation into osteogenic sarcoma - A rare occurance. JOURNAL OF PATHOLOGY OF NEPAL 2012. [DOI: 10.3126/jpn.v2i4.6891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Malignant transformation of fibrous dysplasia is rare, occurring in less than 1% of cases with a mean lag period of 13.5 years. We report a case of Osteogenic Sarcoma with chondroid differentiation in a pre-existing Fibrous Dysplasia occurring within one year of surgical resection and without any history of exposure to radiation. To the best of our knowledge and extensive search of literature, malignant transformation of Fibrous Dysplasia in such a short period of time, and without history of radiation exposure has never been reported from India.Journal of Pathology of Nepal (2012) Vol. 2, 335-337DOI: http://dx.doi.org/10.3126/jpn.v2i4.6891
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Majumdar B, Bhadra SJ, Marathe RP, Farooq S. Adsorption and Diffusion of Methane and Nitrogen in Barium Exchanged ETS-4. Ind Eng Chem Res 2011. [DOI: 10.1021/ie1014124] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Patel NP, Majumdar B, Vijayan V. Comparative dosimetry of GammaMed Plus high-dose rate Ir brachytherapy source. J Med Phys 2010; 35:137-43. [PMID: 20927220 PMCID: PMC2936182 DOI: 10.4103/0971-6203.66761] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 12/18/2009] [Accepted: 03/25/2010] [Indexed: 11/04/2022] Open
Abstract
The comparative dosimetry of GammaMed (GM) Plus high-dose rate brachytherapy source was performed by an experiment using 0.1-cc thimble ionization chamber and simulation-based study using EGSnrc code. In-water dose measurements were performed with 0.1-cc chamber to derive the radial dose function (r = 0.8 to 20.0 cm) and anisotropy function (r = 5.0 cm with polar angle from 10° to 170°). The nonuniformity correction factor for 0.1-cc chamber was applied for in-water measurements at shorter distances from the source. The EGSnrc code was used to derive the dose rate constant (Λ), radial dose function g(L)(r) and anisotropy function F(r, θ) of GM Plus source. The dosimetric data derived using EGSnrc code in our study were in very good agreement relative to published data for GM Plus source. The radial dose function up to 12 cm derived from measured dose using 0.1-cc chamber was in agreement within ±3% of data derived by the simulation study.
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32
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Kundu S, Mukherjee J, Majumdar AK, Majumdar B, Sekhar Ray S. Algorithms and heuristics for efficient medical information display in PDA. Comput Biol Med 2007; 37:1272-82. [PMID: 17222816 DOI: 10.1016/j.compbiomed.2006.11.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 11/01/2006] [Accepted: 11/08/2006] [Indexed: 11/19/2022]
Abstract
Accessing medical information in mobile devices such as PDAs and mobile phones is becoming widespread. Since these devices do not have the same rendering capabilities as of desktop computers, it is necessary for medical information to be fragmented for proper presentation on these types of devices. In this paper, we propose an architecture for displaying medical information in PDA. In the proposed system, a server extracts the information, categorizes the information in order of its relevance for diagnosis, and dynamically generates a hierarchical view of the relevant information based on certain medical domain knowledge. Displaying image and graphics data in PDA poses several challenges. The proposed system supports an image visualization tool, which interactively displays an image or a portion of an image in user's PDA. This visualization tools increases the resource utilization of PDA by offloading a part of the computation to the server. A suitable caching scheme is incorporated for optimum utilization of communication channel bandwidth.
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Uys LR, Bhengu BR, Majumdar B. The use of PHC clinic-based women's groups for financial empowerment in a rural area. Curationis 2006; 29:25-31. [PMID: 16817489 DOI: 10.4102/curationis.v29i1.1036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The article is based on a four-year project during which Primary Health Care (PHC) nurses worked with women's groups in their areas. The aim of the study was to explore the involvement of PHC nurses in economic empowerment, both in terms of health promotion and in terms of the PHC approach. In particular the objectives were to establish whether nurses could lead economic empowerment groups, whether such groups could establish adequate external links and become financially viable. Eleven groups were used as case studies, and a cross-case analysis was done in terms of the three objectives. It was found that between the women and the nurses, adequate leadership existed for the groups to function well. Very limited external linkages were established, notwithstanding efforts in this regard. Nine out of 11 groups contributed to financial welfare of their members after 18 months, but a range of problems with regard to financial viability are identified.
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34
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Patel NP, Majumdar B, Vijayan V. Study of scattered radiation for in-air calibration by a multiple-distance method using ionization chambers and an HDR 192Ir brachytherapy source. Br J Radiol 2006; 79:347-52. [PMID: 16585730 DOI: 10.1259/bjr/54848398] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The aim of this study is to estimate the room-scatter correction when measuring air kerma rate of an HDR 192Ir brachytherapy source by in-air calibration. The variation in scattered radiation due to the specially designed jig and from the room walls was also studied. Two therapy ion chambers of volume 0.1 cm3 and 0.6 cm3 were used in the present study. Air kerma was measured by placing the source at several distances between 10 cm and 20 cm from the chamber. The scatter radiation was determined by superimposing the theoretically derived model curve of known scatter (based on the inverse square law) over the plot of measured air kerma strength values. The scatter radiation was estimated in terms of percentage of the primary radiation at 10 cm measurement distance. The scatter estimated by the 0.6 cm3 chamber at two positions was 0.33% and 0.59%, respectively. Similarly the scatter estimated at two other positions by the 0.1 cm3 chamber was 0.58% and 1.11%. This variation in scatter with position as well as with the chamber was due to the varying scatter contribution from components of the measurement set-up. The scatter radiation becomes constant at a distance greater than 100 cm from the walls of the room. We conclude that a fixed chamber with changing source positions should be used in multiple-distance measurement of air kerma rate when using a measurement jig.
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35
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Browne G, Roberts J, Byrne C, Gafni A, Weir R, Majumdar B. The costs and effects of addressing the needs of vulnerable populations: results of 10 years of research. Can J Nurs Res 2001; 33:65-76. [PMID: 11928156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
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Browne G, Roberts J, Gafni A, Byrne C, Weir R, Majumdar B, Watt S. Economic evaluations of community-based care: lessons from twelve studies in Ontario. J Eval Clin Pract 1999; 5:367-85. [PMID: 10579701 DOI: 10.1046/j.1365-2753.1999.00191.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A series of 12 studies (five historic cohort and seven randomized trials) examined clients in community settings in Southern Ontario suffering from a variety of chronic physical and mental health conditions. These studies are appraised using a framework for evaluating possible outcomes of economic evaluation. In the 12 studies, sample composition and size varied. Each study was designed to quantify the well-being outcomes and expenditures associated with different community-based approaches to care provided in the context of a system of national health insurance. As a collective, these studies represent increasing methodological rigour. Multiple-perspective client well-being outcome measures were used. In two studies, caregiver burden also was analysed. A common approach to quantification and evaluation of expenditures for service consumption was used in all 12 studies. The nature of community-based health services (health vs. disease care orientation) was found to have direct and measurable impact on total expenditures for health service utilization and client well-being outcomes. In most cases, a recurring pattern of equal or better client outcomes, yet lower expenditures for use of community based health services, was associated with well-integrated health oriented services. Integrated services aimed at factors which determine health are superior when compared to individual, fragmented, disease oriented, and focused approaches to care. The main lessons from the 12 studies are that it is as or more effective and as or less expensive to offer complete, proactive, community health services to persons living with chronic circumstance than to provide focused, on-demand, piecemeal services. Complete services would have a psychosocial and mental health focus included with the physical care approach. Furthermore, people with coexisting risk factors (age, living arrangements, mental distress and problem-solving ability) are the ones who most benefit at lower expense from health oriented, proactive interventions.
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Majumdar B. Empowerment through self-directed learning. THE CANADIAN NURSE 1999; 95:37-40. [PMID: 10624219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
In the 1970s, McMaster University, Hamilton, introduced self-directed learning (SDL) to its undergraduate nursing program. This innovation was prompted by a fundamental belief in the importance of nurse empowerment and the link between empowerment and SDL. The empowerment of nurses, it was believed, was critical to the improved health and welfare of patients. In the 1990s, faculty and alumni have perceived another benefit to SDL: the ability of McMaster graduates to persevere and excel in the face of health care system change.
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Majumdar B, Keystone JS, Cuttress LA. Cultural sensitivity training among foreign medical graduates. MEDICAL EDUCATION 1999; 33:177-184. [PMID: 10211237 DOI: 10.1046/j.1365-2923.1999.00291.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
OBJECTIVES To examine the effectiveness of culture sensitivity training for foreign-trained medical graduates licensed to practice in Ontario, Canada. DESIGN A study of pretest-post-test design was conducted to determine the effect of cultural sensitivity training on newly immigrated physicians licensed in Canada. Twenty-four physicians, those who had passed the medical licensing exam in 1996 and had not yet started their residency program, were given 15 hours of cultural sensitivity training and were considered the experimental group. This group was compared with a control group of 24 physicians who had passed the licensing exam and were in the process of completing residency. SETTING University of Toronto. SUBJECTS Foreign-trained medical graduates. RESULTS Both groups completed the Cross-Cultural Adaptability Inventory both before and after the training of the experimental group. Statistical significance in three subscales of the Open-Mindedness/Flexibility, Emotional Resilience and Perceptual Acuity dimensions were demonstrated in the experimental group as compared with the control group. CONCLUSIONS In order for Canada to mould professional and effective physicians great care must be taken in the design and process of cultural sensitivity programmes to enhance both knowledge and skills. Follow-up should be undertaken to compare their effectiveness with the control group.
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Merfeld GD, Karim A, Majumdar B, Satija SK, Paul DR. Interfacial thickness in bilayers of poly(phenylene oxide) and styrenic copolymers. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/(sici)1099-0488(199812)36:17<3115::aid-polb11>3.0.co;2-h] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Majumdar B, Ladak S. Management of family and workplace stress experienced by women of colour from various cultural backgrounds. Canadian Journal of Public Health 1998. [PMID: 9524391 DOI: 10.1007/bf03405795] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Minority women identify finances and maintaining cultural values as their most commonly experienced stressors at home and in the work-place. A before and after study of ethnic minority women in focus group sessions led by a trained ethnic minority facilitator examined how social and workplace supports, or lack thereof, impact on the individuals' ability to manage daily life. Creative, effective solutions to stressors were identified by the participants. Outcomes were evaluated in terms of the impact of changes on the participants' coping styles in family and work life. Results indicate that a large percentage of women in this study felt discriminated against based on their culture/race, however, this perceived discrimination decreased after the focus groups. The predominant stress management techniques were prayer and music. Family support was the most influential factor in decreasing stress. The family is a major source of support for the working women, acting as a buffer to workplace pressures.
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Majumdar B, Roberts J. AIDS awareness among women: the benefit of culturally sensitive educational programs. Health Care Women Int 1998; 19:141-53. [PMID: 9526334 DOI: 10.1080/073993398246476] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AIDS affects everyone, regardless of race, age, or religion; hence, information must be accessible to everyone. This descriptive study identified the need to generate culturally sensitive educational programs and evaluated their effect. Culturally sensitive AIDS educational training was offered to culturally diverse women. Training was conducted by women of the same ethnicity as the women in the group. The facilitators were specially trained on the role of a facilitator and the participatory method of learning. To assess any change in attitude, knowledge, and beliefs regarding AIDS, the questionnaire was administered before and after the training programs. Educational training had a positive effect (p < .05) on participants' attitude and knowledge regarding AIDS; they felt comfortable discussing their concerns in their own language, and with their friends from the same community, and they viewed the resources used as culturally sensitive.
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Jayaram V, Mishra R, Majumdar B, Lesher C, Mukherjee A. Dense nanometric ZrO2Al2O3 from spray-pyrolysed powders. Colloids Surf A Physicochem Eng Asp 1998. [DOI: 10.1016/s0927-7757(97)00108-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Majumdar B, Amarsi Y, Carpio B. Pakistan's community health workers. THE CANADIAN NURSE 1997; 93:32-4. [PMID: 9223980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pakistan's health characteristics are worse than those of other Asian countries at similar stages of development. Its mortality rate for children under five is 139 per 1,000, and its maternal mortality is 60 per 10,000. Malnutrition in women and children is widespread; 50 per cent of children under five are stunted. Pakistan's population growth rate of 3.1 per cent per year is among the highest in Asia. The high population growth rate and poor health status of many people call for extensive health care services, but, unfortunately, health services do not reach most of the people of Pakistan. Partly because the training of doctors and nurses is lengthy and expensive, there is an acute shortage of health care providers, especially women. Although female health professionals are preferred for caring for women, cultural constraints inhibit women from seeking education. Such is the multifaceted dilemma in the provision of primary health care in Pakistan.
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Majumdar B, Paul D, Oshinski A. Evolution of morphology in compatibilized vs uncompatibilized polyamide blends. POLYMER 1997. [DOI: 10.1016/s0032-3861(96)00702-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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45
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Jeon HS, Lee JH, Balsara NP, Majumdar B, Fetters LJ, Faldi A. Domain Shape Transitions in Emulsified Polyolefin Blends. Macromolecules 1997. [DOI: 10.1021/ma961232e] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Garetz BA, Balsara NP, Dai HJ, Wang Z, Newstein MC, Majumdar B. Orientation Correlations in Lamellar Block Copolymers. Macromolecules 1996. [DOI: 10.1021/ma9600724] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Majumdar B. Self-directed learning in the context of a nursing curriculum: development of a learning plan. Curationis 1996; 19:43-6. [PMID: 9257593 DOI: 10.4102/curationis.v19i2.1323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The rapid pace at which biological health breakthroughs and advancements in technology occur is creating unique challenges to health care programmes. The curricula of all health care programmes will need to be set in learning environments where students will be able to develop learning skills that are transportable across situations, over a whole lifetime. This article attempts to focus on self-directed learning (SDL) concepts and the development of a learning contract/plan, including the roles of both the student and faculty in self-learning approaches and contractual development.
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Majumdar B, Browne G, Roberts J. The prevalence of multicultural groups receiving in-home service from three community agencies in southern Ontario: implications for cultural sensitivity training. CANADIAN JOURNAL OF PUBLIC HEALTH = REVUE CANADIENNE DE SANTE PUBLIQUE 1995; 86:206-11. [PMID: 7671209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This survey assessed the ethnocultural proportion of clients (largely seniors) receiving services from three home care health agencies in Southern Ontario. Providers from the three agencies were asked to recall clients served in the previous two weeks and to describe them in terms of race, language, sex, age and disability status. White, English-speaking clients comprised 88.3% of the sample (N = 931). The remaining 11.7% of clients were white, non-English-speaking (7.8%), visible minority (2.8%), francophone (0.77%), indigenous (0.22%) and Hispanic (0.11%). Sixty-three percent of clients were women and 34% men. The majority (66.6%) of clients were over 65 years. The 11.7% of clients who were identified as multicultural in three home care agencies are an under-representation of the multicultural mix of population in the Southern Ontario region, which is 24%. Some recommendations have been offered for a system for ethnocultural data collection for the region and provision of cultural sensitivity training programs to enhance staff knowledge and skills.
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Sword W, Noesgaard C, Majumdar B. Examination of student learning about dimensions of health and illness using Stewart's conceptual framework for primary health care. NURSE EDUCATION TODAY 1994; 14:354-362. [PMID: 7808371 DOI: 10.1016/0260-6917(94)90030-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In view of the increasing emphasis on community-based primary health care, nursing education programs need to identify creative learning strategies to prepare nurses capable of promoting, maintaining and restoring health in diverse populations. The purpose of this descriptive study was to identify the learning outcomes acknowledged by junior baccalaureate nursing students in non-traditional community settings. Data were gathered through semi-structured interviews with the students, through journals kept daily by the students, and from the faculty tutor's anecdotal notes. Analysis of data illustrated concepts from Stewart's conceptual framework for primary health care. Students gained an appreciation of the influence of the social-cultural-political and physical environments on health. They also came to understand the significance of collaborative modes of interaction with recipients of nursing care. Thus, non-traditional community experiences demonstrated effectiveness in enhancing students' understanding of the multiple dimensions of health as well as the necessity for mutuality in nurse-person interactions. Providing varied learning environments in undergraduate nursing programs will produce practitioners who are more responsive to present and future primary health care issues.
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Mason JD, Smith SJ, Jones NS, Majumdar B, Read RC. An in vitro model for measuring tryptase release from nasal mucosa in response to allergen challenge. Clin Otolaryngol 1994; 19:407-9. [PMID: 7834882 DOI: 10.1111/j.1365-2273.1994.tb01258.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A simple in vitro nasal mucosal culture model has been developed to measure release of the mast cell specific enzyme tryptase in response to allergen challenge. Patients who were undergoing inferior turbinectomy were skin-tested for commonly inhaled allergens. The mucosa from the inferior turbinates was kept viable using Minimal Essential Medium. Tryptase release into the medium was measured using the Pharmacia Riact Assay. There was a significant increase in tryptase release in response to allergen challenge from the mucosa harvested from skin-test positive patients. Mucosa from skin-test negative patients failed to demonstrate an increase in tryptase release. This could prove to be a useful research model for the study of nasal type I hypersensitivity and drugs that affect it.
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