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A computerised cancer registry data and validation system in India--its implications for developing countries.

The cancer registration system in India, and an appropriate computer program to validate the cancer patient data it generates, are described, with the resource inputs, and outputs of research, training, awareness creation and cancer control, in the context of local health care systems. Computer packages already available mostly address the type of data obtainable from western health care systems. The same factors that limit health care systems in India, and probably most other developing countries--inadequate health care facilities, skeletal medical records systems, meagre and unavailable vital statistics, few trained staff, funding and computer facilities--also limit the data sent to the National Cancer Registry Programme. The computer program we developed checks for the reliability and validity of various cancer diagnostic, spread, therapeutic and outcome variables. The program is in HIBASIC for a CPM operating system with a minimum of 64 kB memory, adaptable to MS-DOS systems, population-based cancer registry data, and perhaps to other types of chronic disease registries, with relevant modifications. Since reliable cancer registry data are needed for effective cancer control measures, this program may help in such efforts in developing countries.

Computers↗

Self-efficacy as a predictor of smoking behavior in young adolescents.

This study sought to develop a self-efficacy scale to predict smoking behavior and diagnose the most vulnerable factors associated with its onset. A sample of 800 seventh and eighth grade students received the survey on three separate occasions over an 8-month period. The instrument was comprised of 50 self-efficacy items, including social and emotional variables, and a self-report of smoking behavior. The data revealed an association between the total self-efficacy score and reported smoking behavior, implying the predictive capacity of the instrument. Factor analysis indicated several recurring item groups: social opportunities to smoke, emotional stress, and peer influences. Discriminant analysis of the subscales provided significant prediction of smoking behavior. Onset smoking behavior was also predictable over 3- and 5-month intervals. Peer influence persisted as the primary determinant of smoking activity. To confirm these results and ascertain the generalizability of this instrument, it is recommended that it be administered in other communities, and in conjunction with biochemical analysis to validate the self-reported smoking behavior. The instrument has potential application as a predictor of smoking behavior, to permit the design of more appropriate prevention programs, and as an effective evaluation measure for such interventions.

Female↗

A multiple-site perineal applicator (MUPIT) for treatment of prostatic, anorectal, and gynecologic malignancies.

Recently, transperineal interstitial-intracavitary applicators have been used to treat locally limited and advanced perineal and gynecologic malignancies. We have developed a single afterloading applicator, referred to as the "MUPIT" (Martinez Universal Perineal Interstitial Template), which with its prototypes has been utilized to treat 78 patients with malignancies of the cervix, vagina, female urethra, perineum, prostate, and anorectal region. The device basically consists of two acrylic cylinders, an acrylic template with a predrilled array of holes that serve as guides for trocars, and a cover plate. Some of the guide holes on the template are angled outward to permit a wide lateral coverage without danger of striking the ischium. The cylinders have an axial hole large enough to pass a central tandem or a suction tube for the drainage of secretions. Thus, the device allows for the interstitial placement of 192Ir ribbons as well as the intracavitary placement of either 137Cs tubes or 192Ir ribbons. In use, the cylinders are placed in the vagina and rectum and then fastened to the template, so that a fixed geometric relationship among the tumor volume, normal structures, and source placement is preserved throughout the course of the implantation. Hollow, closed-end, stainless steel trocars are then inserted through the guide holes that produce optimal coverage of the treatment volume. Appropriate computer programs also have been developed on a minicomputer for the corresponding dose-rate computations. These programs run with sufficient speed that they may be used for both the planning of the source placement beforehand and the computation of the actual dose-rate distribution obtained. The advantages of the system are (1) greater control of the placement of sources relative to the tumor volume and critical structures owing to the fixed geometry provided by the template and cylinders, and (2) improved dose-rate distributions obtained by means of computer-assisted optimization of the source placement and strength during the planning phase.

Anus Neoplasms↗

Combination of external beam irradiation and multiple-site perineal applicator (MUPIT) for treatment of locally advanced or recurrent prostatic, anorectal, and gynecologic malignancies.

We have devised a single after-loading applicator, the Martinez Universal Perineal Interstitial Template (MUPIT), which has been used in combination with external beam irradiation to treat 104 patients with either locally advanced or recurrent malignancies of the cervix, vagina, female urethra, prostate, or anorectal region. Twenty-six patients treated for prostate cancer are excluded because of their short follow-up. Local failure developed in 13 of the 78 remaining patients (16.6%)--major complications developed in 4 patients (5.1%). Follow-up has been 1 year to 7 1/2 years; 60/78 patients have been followed for more than 2 years. All local recurrences and complications occurred before 18 months. The device consists of two acrylic cylinders, an acrylic template with an array of holes that serve as guides for trocars, and a cover plate. In use, the cylinders are placed in the vagina and/or rectum or both and then fastened to the template so that a fixed geometric relationship among the tumor volume, normal structures, and source placement is preserved throughout the course of the implantation. Appropriate computer programs have been developed to calculate the dose from these implants. The advantages of the system are (a) greater control of the placement of sources relative to the tumor volume and critical structures, as a result of the fixed geometry provided by the template and cylinders, and (b) improved dose-rate distributions obtained by means of computerized optimization of the source placement and strength during the planning phase. We conclude that the local control rate (83.4%) with low morbidity (5.1%) achieved with the combination of external beam irradiation and MUPIT applicator in these patients with locally advanced malignancies represents an improvement over previous published results with other applicators.

Adenocarcinoma↗

Large scale optimization of beam weights under dose-volume restrictions.

The problem of choosing weights for beams in a multifield plan which maximizes tumor dose under conditions that recognize the volume dependence of organ tolerance to radiation is considered, and its solution described. Structures are modelled as collections of discrete points, and the weighting problem described as a combinatorial linear program (LP). The combinatorial LP is solved as a mixed 0/1 integer program with appropriate restrictions on normal tissue dose. The method is illustrated through the assignment of weights to a set of 10 beams incident on a pelvic target. Dose-volume restrictions are placed on surrounding bowel, bladder, and rectum, and a limit placed on tumor dose inhomogeneity. Different tolerance restrictions are examined, so that the sensitivity of the target dose to changes in the normal tissue constraints may be explored. It is shown that the distributions obtained satisfy the posed constraints. The technique permits formal solution of the optimization problem, in a time short enough to meet the needs of treatment planners.

Humans↗

Assessing adolescent health needs: a factor analytic approach.

Advances in technology are rapidly expanding health educators' resources for presenting information tailored to meet individual health needs and interests. A self-administered questionnaire was given to 510 youths in grades 6 through 9 to ascertain adolescents' health concerns and thus develop more appropriate educational programs. Smoking, diet and weight control, physical fitness, and general health items were included. Factor analysis methods identified ten concerns; smoking, weight control, exercise effects, peer approval of appearance, preparatory health behaviors, planning and maintaining a personal health program, feeling good about oneself, communication issues, comparisons with others, and resistance to negative peer influences. Sex and grade were significantly associated with particular responses. Recommendations include the value of addressing each area of the content domain as it relates to health lessons to ensure that information is relevant to the needs and interests of individual adolescents.

Adolescent↗

Criteria for identifying and listing substances known to cause developmental toxicity under California's Proposition 65.

Because of the automatic restrictions and warning requirements imposed on substances identified by the state as "known to cause developmental toxicity," the Expert Committee recommends the use of criteria that emphasize human relevancy, biological plausibility, and evidence in support of a selective, adverse developmental effect at non-maternally-toxic doses. In many instances, data for substances of public concern will be insufficient at present to meet these criteria. The fact that a substance is not listed as "known to cause developmental toxicity" does not create a presumption that the substance is safe. The Expert Committee, therefore, urges that these substances be recommended for further testing and that high priority be given to conducting the necessary tests. The Expert Committee reiterates its concern that substances listed by the SAP be identified according to the toxic endpoints (cancer, male reproductive toxicity, female reproductive toxicity, and/or developmental toxicity) that led to listing. Further, the Expert Committee recommends that the state Health and Welfare Agency institute education programs emphasizing appropriate courses of action for citizens informed of exposures to substances known to the state to cause cancer, birth defects, or reproductive toxicity.

Animals↗

Stroke prevention, treatment, and rehabilitation in sub-saharan Africa.

Stroke is emerging as a leading cause of preventable death and disability in adults in many developing nations. In Sub-Saharan Africa (SSA), stroke mortality and case fatality in some countries exceed those in the developed world. Stroke also occurs at much earlier ages in SSA, resulting in a greater number of years of potential life lost. The high social and economic burden of stroke calls for effective strategies for prevention, treatment, and rehabilitation in SSA. High blood pressure is the most powerful predictor of stroke, and its treatment can reduce the risk of stroke by > or = 40%. Effective stroke prevention calls for comprehensive risk reduction including blood pressure control. Population-based health education programs and appropriate public health policy coupled with high-risk strategies targeting hypertensive persons and stroke patients must be developed. A broad partnership of key players, innovative funding mechanisms, and increased national and international commitment for the prevention and control of stroke in sub-Saharan Africa and other developing countries is needed.

Africa South of the Sahara↗

Is there value in liver function test and creatine phosphokinase monitoring with statin use?

Statins have transformed the care of patients with vascular disease. Patients in almost every category that has been studied have benefited substantially. On the other hand, although the incidence of side effects is remarkably low, statins, like any other therapy, are not entirely free of serious risks. From the outset, based on the mechanism of action of statins, hepatotoxicity has been a concern. Moreover, although the mechanisms remain obscure, significant skeletal muscle injury, which can lead to renal failure and death, unquestionably does occur. To mitigate these risks, screening and monitoring programs for hepatic and skeletal muscle injury were put in place when statins were introduced into clinical practice. This article reviews the benefits and the costs of these efforts. Although the benefits have not been shown, the costs are real and substantial. These include the harm caused by inappropriate withdrawal of therapy, which has been shown to be life-saving, as well as the considerable financial expenditure. The conclusion that follows, based on the evidence in hand, is that although these programs were appropriate at the time statins were introduced, they are not appropriate now.

Anticholesteremic Agents↗

Ethnic differences in older americans: awareness, knowledge, and beliefs about hypertension.

BACKGROUND: Hypertension is often uncontrolled and contributes to health disparities, especially among individuals >or=50 years old. Ethnic differences in awareness, knowledge, and beliefs about hypertension may contribute to these disparities, but information is limited. METHODS: To address this gap, data from a national telephone survey on 1503 Americans 50 years and older were used to assess ethnic differences in awareness, knowledge, and beliefs about hypertension and the relationship of the responses to self-reported blood pressure (BP) control. RESULTS: Overall there were no ethnic differences in knowledge and beliefs about hypertension; however, there were differences in responses to specific questions. African Americans were more knowledgeable about the definition of hypertension and were more aware that hypertension can cause kidney failure than Hispanics and whites (64.2% v 54.8% and 46.3%, P<.0001). African American and Hispanics were more likely to perceive medications as the only way to control BP (50.5% and 55.5% v 23.3%, P<.0001), whereas whites reported lifestyle changes as more important than African Americans in BP control. Comparing self-reported BP control between ethnic groups, belief that medications are not the only way to treat BP (odds ratio [OR] 2.37, 95% confidence interval [CI] 1.43-3.95) and knowledge that moderation of alcohol use can lower BP (OR 2.34, 95% CI 1.20-4.57) were significantly associated with higher BP control rates. CONCLUSIONS: Ethnic differences in specific dimensions of knowledge and beliefs about hypertension exist and account for some of the disparities in BP control. Culturally appropriate educational programs that address these deficiencies may reduce disparities.

Black or African American↗

[Incidence of meticillin-resistant Staphylococcus aureus in neonatal care unit of departmental hospital centre of Zou Collines in Benin].

UNLABELLED: Meticillin resistant Staphylococcus aureus (MRSA) is among the most important causes of nosocomial infections. It possesses a particular ability to spread in hospitals worldwide. OBJECTIVE: To analyze the proportion of MRSA among S. aureus isolated from specimen taken for diagnosis purposes. To make the medical staff aware of the problem of MRSA infections and to take a better care of patients. PATIENTS AND METHODS: During 3 months, a prospective study was carried out in the neonatal unit of centre hospitalier départemental du Zou et Collines in Benin. We identified newborn carriers of SA, particularly MRSA and factors associated with the carriage. Two hundred and ninety patients were admitted in the 3 divisions of the neonatal unit. From 195 specimens examined for diagnosis purposes 48 h after hospitalization, 112 patients were detected by nose swabbing. Concurrently, swabbing of environment was achieved. RESULTS: Among patients'specimens, 141 isolations of S. aureus were observed. The proportion of MRSA was 36% amongst diagnostic specimens. MRSA represented 39% of the environment specimens. None of the isolated MRSA produces Panton Valentine leukocidin. CONCLUSION: Our survey revealed a high level of MRSA among S. aureus isolated from diagnostic specimens. Consecutive to such findings and for decreasing nosocomial infection, an appropriate prevention program was installed, including intensive promotion of hands hygiene, correct sterilization and disinfection of materials and patients.

Benin↗

A microprobe analysis of inorganic elements in Halobacterium salinarum.

Halobacterium salinarum were grown on peptone agar containing 4.28 M NaCl, 0.036 M K and other salts. Stationary phase organisms were lifted onto carbon planchets, freeze-dried, carbon coated and examined in a scanning electron microscope equipped with an X-ray spectrometer. Intracellular element concentrations (mol/kg H(2)O) were determined using a bulk analysis program with appropriate standards. The cell K concentration was 110 times that of the medium. For Na this value was 0.3 and for Cl, 1.1. When Rb was present in the medium, its intracellular concentration was 77 times higher than the external value. The cation minus anion value suggests a high fixed negative charge, 0.72 equivalents. Intracellular apparent dielectric constants were calculated using cellular EMFs derived from the literature, and sodium concentration. The determined values ranged from 22-28 (vs 80 for normal water) suggesting phases of structured cell water. Ionic distributions in these extremophiles are treated according to the classical principles elucidated by Willard Gibbs and represents a heterogeneous system in thermodynamic equilibrium with the hypersaline environment. Factors to be considered are: (1) composition of Halobacterium and its immobile negative charge; (2) the physicochemical properties of the individual ions (charge, ionic radius, hydration energy, standard chemical potential); (3) the dielectric constant of the dispersion medium (water); and (4) the binding of ions, particularly potassium.

Chlorides↗

Direct screening and confirmation of priority volatile organic pollutants in drinking water.

A screening tool was proposed for the rapid detection of eight priority volatile organic pollutants according to European standards in drinking water. The method is based on the direct coupling of a headspace sampler with a mass spectrometer, using a chromatographic column heated to 175 degrees C as an interface. The water sample was subjected to the headspace extraction process and the volatile fraction was introduced directly into the mass spectrometer, without prior chromatographic separation, achieving low detection limits (0.6-1.2 ng/ml) for all compounds. The mass spectrum resulting from the simultaneous ionization and fragmentation of the mixture of molecules constitutes the volatile profile of each sample. An appropriate chemometric treatment of these signals permitted them to be classified, on the basis of their volatile composition, as contaminated or uncontaminated with respect to the legally established concentration levels for these compounds in drinking water, and providing no false negatives. A conventional confirmation method was carried out to analyze positive water samples by using the same instrumental setup as in the screening method, but using an appropriate temperature program in the chromatographic column to separate, identify and quantify each analyte.

Gas Chromatography-Mass Spectrometry↗

Sexually transmitted infections: prevention and management.

In the early 21st century, STI and HIV have been linked inextricably. Although the focus of this article is STI, some discussion on the diagnosis and management of individuals with HIV infection is necessary. The history of HIV diagnosis in the workplace is checkered. The authors have seen cases of prospective workers being subjected to HIV testing without their knowledge as part of a pre-employment medical examination. If the test came back positive, the men were told that they would not be employed without explanation. This approach is a breech of the human rights of the individual being tested and cannot be condoned. Any HIV testing must be done with the full and informed consent of the individual, with counseling given before and after testing to enable individuals with HIV infection to seek care and protect their families and to give individuals without HIV infection counseling on risk reduction. Men and women who present with an STI are at risk for HIV infection. With increasing options for management and secondary prevention, it is important to recognize people who are at risk. This identification should be done through HIV VCT. The location, funding, and supervision of VCT sites related to workplace populations should be a subject for serious debate. Although fears of mass layoffs after HIV testing largely have been unfounded, it is natural for workers to be fearful, unless there is a clearly articulated policy stating that the company observes and enforces nondiscriminatory practices. The workplace examples show that syndromic STI management, allied to comprehensive prevention programs, can have a genuine and measurable impact on STI prevalence. The potential interventions and partners are listed in Table 2. A community-based, randomized study in Tanzania showed that the institution of a well-managed STI syndromic management program can reduce HIV incidence by up to 40%, in the context of a rising HIV epidemic. Presumptive STI treatment for female sex workers (see Box 1) may prove useful as a short-term measure to reduce high STI prevalence rates while more sustainable preventive and curative services are established. The laboratory diagnosis of STIs remains problematic in the face of commonly available technologies of limited sensitivity and specificity and often substandard quality-assurance practices. For these and other reasons, syndromic management became the recommended strategy for treating STIs. The availability of rapid, accurate, and inexpensive diagnostics, especially for cervical infections for women, would alter management recommendations. Work is being done by the WHO and others to develop and assess low-cost diagnostics. Managing STIs and altering the behavior that leads to STIs are essential elements of any HIV prevention and management program. The issues surrounding a practical, compassionate, and comprehensive HIV program can be difficult. Numerous publications exist to help program managers navigate these issues and appropriately tailor a program to the needs of individual organizations. Some of these publications are listed in the next section.

Developing Countries↗

Four core communication skills of highly effective practitioners.

For 40 years, medical researchers have been studying physician-patient interactions, and the results of these studies have yielded three basic conclusions: physician-patient interactions have an impact on patient health, patient and physician satisfaction, adherence to medical recommendations, and malpractice risk; communication is a core clinical skill and an essential component of clinical competence; and appropriate training programs can significantly change medical practitioners' communication knowledge, skills, and attitudes. Many of these findings are applicable to the practice of veterinary medicine.

Clinical Competence↗

Risk factors associated with HCV infection in semi-rural areas of central Greece.

BACKGROUND: Hepatitis C virus (HCV) appears to be endemic in most parts of the world, but there is considerable geographic variation. In order to assess the geographic distribution of HCV in Thessaly, in central Greece, we conducted a retrospective study in HCV-infected patients attending the Academic Liver Unit of Thessaly University from 1999 to 2003. We also investigated whether variation among regions could be attributed to differences in risk factors. METHODS: We evaluated the records of 309 HCV patients whose origin and/or residence was in Thessaly. To identify risk factors that were independently associated with the place of birth and/or residence, adjusted odds ratios (OR) were calculated by logistic regression analysis. We also studied the medical records of 150 HCV-negative patients from the same areas in order to evaluate whether there are differences in risk factors reported by HCV-positive and HCV-negative patients. RESULTS: We found three municipalities with a high HCV frequency. The use of non-disposable, multiple-use glass syringes for medical purposes in the past was the only potential risk factor more frequently identified in these areas than in other places (OR=2.3; p<0.05). This risk factor was significantly (p<0.001) associated with older age of the infected patients. CONCLUSIONS: This study shows that the spread of HCV in the three regions may have occurred several years ago as a result of the use of multiple-use glass syringes. Differences in prevalence rates among different age groups, as well as among different areas, indicate the need for extensive studies to determine HCV epidemiology and to develop appropriate prevention programs.

Journal Article↗

Cytogenetic abnormalities and the failure of development after round spermatid injections.

OBJECTIVE: To assess cytologic and cytogenetic abnormalities following round spermatid injection. DESIGN: Prospective analysis. SETTING: In vitro fertilization centers. PATIENT(S): Fourteen couples accepted to a round spermatid injection (ROSI) and preimplantation genetic diagnosis (PGD) program after appropriate counseling. INTERVENTION(S): ROSI, PGD, with fluorescence in situ hybridization for chromosome enumeration. MAIN OUTCOME MEASURE(S): Cytologic and cytogenetic abnormalities in oocytes, zygotes, and blastomeres. RESULT(S): The fertilization rate following ROSI was 36%. Only 11 of 143 (7.7%) oocytes developed to have several blastomeres. Cytologic and cytogenetic abnormalities accounted for the vast majority of blockage at oocyte, zygote, and early mitotic division stages. Four biopsied embryos were normal. These and seven others were implanted, but no pregnancy was achieved. CONCLUSION(S): A PGD diagnosis for common aneuploidies and blastocyst stage transfer is feasible for ROSI cases. Failure with ROSI is cause primarily by chromosome abnormalities, so use of ROSI in assisted reproductive technologies should be limited.

Chromosome Aberrations↗

Nurses' self-assessment of their nursing competencies, job demands and job performance in the Taiwan hospital system.

This exploratory study investigated nurses' self-assessment of their own nursing competencies, job demands and job performance in Taiwan. Nurses' self-evaluation on their own job performance was conceptualized as an indicator of nursing care quality. A total of 21 competencies were clustered into three groups: basic-level patient care skills, intermediate-level patient care and fundamental management skills, and advanced-level patient care and supervision skills. Nurse subjects were randomly selected from the member roster of Kaohsiung Nurse Association; 850 nurses were invited to participate and questionnaire packets were sent to their homes. The overall response rate was 35.8%. Multiple regression analyses found that nurses' self-assessment of intermediate patient care skills, the difference between nurses' self-assessment and job demands for basic patient care skills, and nurses' overall satisfaction with their own nursing competencies were three significant predictors of overall satisfaction with nurses' own job performance. Nurses' self-assessment on basic patient care skills and advanced patient care skills contributed to nurses' levels of overall satisfaction with their own nursing competencies. These results suggest a relationship between competency and performance. These findings may serve as a guide to amend academic nursing courses and on-job training programs as appropriate to place a greater emphasis on the competencies desired for providing high quality of nursing services.

Adult↗