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Biomedical subjects

J Gold

Publications and source records attributed to J Gold.

At least 91 records · Page 5Linked to original sources

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Equipment and Supplies↗

HIV-related emergencies: frequency, diagnoses, and outcome.

OBJECTIVE: To study the clinical epidemiology and outcome of HIV-related emergencies, and to identify clinical predictors of HIV-related emergency hospitalizations. DESIGN: Case series. SETTING: Emergency facility of a tertiary care teaching hospital. PATIENTS: 350 HIV/AIDS patients followed at the authors' center. MEASUREMENTS AND MAIN RESULTS: 69 of 356 patients made 92 emergency visits with a frequency of 8% per month and 20% per quarter in a three-month study period. Forty-three visits (47%) resulted in hospitalization and contributed to 70% of total AIDS hospitalizations in the period. The five most common acute diagnoses were pneumonia (n = 22; 24%), fever (n = 15; 16%), upper respiratory infection (n = 9; 10%), cellulitis (n = 6; 7%), and gastroenteritis (n = 6; 7%). Three diagnoses accounted for 70% of acute HIV hospitalizations: pneumonia (n = 19), fever (n = 4), and sepsis (n = 4). Analysis of patient disposition as it relates to the patient's clinical presentation and HIV history using multivariate analysis yielded 1) the presence of dyspnea or cough (p = 0.015) and 2) fever with an abnormal chest x-ray (p = 0.008) as independently predictive of hospitalization. CONCLUSION: The findings indicate that HIV/AIDS patients have a frequent need for emergency care and most HIV/AIDS hospitalizations are emergency-related. The acute problems of these patients are related to a limited number of diagnostic categories, and the presence of respiratory or constitutional symptoms with an abnormal chest radiograph are the only reliable factors predictive of hospitalization.

Adult↗

Injecting drug users and HIV/AIDS: risk behaviours and risk perception.

This paper reports on the incidence of risk taking behaviours, and the relationship between risk perception and risk behaviours in a sample of 1245 Sydney injecting drug users (IDUs). Almost all respondents reported engaging in behaviours that placed them at risk of HIV infection: 32.9% through unsafe injecting, 84.4% because of unsafe sexual behaviour and 89.2% because of either injecting or sexual behaviour. Injecting and sexual behaviour were poorly correlated. This study also found that risk perception is unrelated to injecting or sexual behaviours, previous history of sexually transmitted diseases, a range of demographic characteristics including age and gender, and the number of times tested for HIV. Social policy and prevention programs should aim to change unsafe injecting and sexual behaviours directly, rather than attempting to achieve change indirectly by changing risk perception.

AIDS Serodiagnosis↗

Changes in equipment sharing in injecting drug users in Sydney 1989-1990.

We investigated levels of equipment sharing in injecting drug users in Sydney, Australia, in two consecutive samples recruited in a non-treatment setting using similar methodology in 1989 (n = 1,245) and 1990 (n = 550). Comparison between the two waves of the study indicated that there were consistent and major reductions in percentage of time used equipment was re-used, and number of people from whom used equipment had been accepted. There was a corresponding significant and major increase in use of sterile injection equipment, obtained more frequently in the second sample from needle and syringe exchanges. The proportion of respondents reporting they had never shared equipment rose significantly. These data suggest that there is a continuing increase in the adoption of safer injecting practices and utilisation of needle and syringe exchanges over time in response to the threat of HIV transmission in injecting drug users.

Journal Article↗

Breast-feeding during primary maternal human immunodeficiency virus infection and risk of transmission from mother to infant.

Examination of breast-fed infants of the complete cohort of Australian women whose primary human immunodeficiency virus (HIV) infection occurred postpartum allows for an estimate of risk of transmission of HIV. Ten women with no other risk factors were infected via blood transfusion postpartum. They breast-fed for up to 9 months; 2 of their infants were infected. Another woman, who shared needles for intravenous drug use, seroconverted 6-10 months post-partum. She breast-fed for 14 months. Retrovirus was visualized in the cellular and cell-free fraction of her milk by electron microscopy. Infection in her infant was confirmed at 12 months. Thus, 3 of the 11 babies at risk became infected, providing an estimate of risk of 27% for breast-feeding during primary maternal infection (95% confidence interval, 6-61%). These data establish the association of primary maternal HIV infection and breast-feeding with a high risk of transmission to infants.

Animals↗

Private psychiatric hospitalization of children: predictors of length of stay.

OBJECTIVE: To quantitatively identify predictors and determinants of length of psychiatric hospital stay for children. METHOD: Forty-seven demographic, psychosocial stressor, psychopathology, and disposition variables were statistically reviewed as correlates of length of stay in 100 consecutive discharges from a child psychiatry inpatient service (age range 4-12) in a private hospital. Those with strong statistical significance were then analyzed by multiple regression. RESULTS: Greater severity of psychopathology (measured by the Children's Global Assessment Scale), greater severity of psychosocial stressors (by Axis IV scale), diagnosis of post-traumatic stress disorder, special educational and out-of-home dispositions, and severe tantrums in hospital all strongly predicted longer hospital stay. Diagnosis of adjustment disorder predicted shorter stay. Together these variables explained 57% of the total variance in length of stay. CONCLUSIONS: The most powerful of these predictor variables could potentially be measured at the time of admission, thus permitting accurate prediction of length of stay. A set of models was generated for this purpose.

Child↗

Falling incidence of HIV infection in a cohort of clinic attenders.

It is widely accepted that changes in sexual behaviour in the mid-1980s drastically reduced the spread of human immunodeficiency virus (HIV) through male homosexual contact in Western countries, but documentation of changes in infection rates has been based on observation of subjects enrolled in cohort studies, who may be highly selected and motivated. In this study, the incidence of HIV seroconversion was investigated among people attending a major site of HIV testing, counselling and patient care in Sydney. Over the period March 1985 to June 1990, 2,301 people were tested for HIV antibody on more than one occasion, following a negative result at the first test. On the basis of subsequent tests, 107 were found to have seroconverted during the study period, including 91 men who reported homosexual or bisexual contact as their only exposure to HIV. Overall, the incidence rate of HIV infection among men reporting homosexual or bisexual contact was 404 per 100 person-years of follow-up. Under various methods of calculation, the incidence was estimated to have declined between 1985 and 1989-1990. However, there was continuing HIV seroconversion in 1989-1990 and no indication of declining incidence in younger men. The fall in HIV incidence documented in this study supports the role of HIV prevention programs aimed at homosexual and bisexual men.

Adult↗

A comparison of drug use and HIV infection risk behavior between injecting drug users currently in treatment, previously in treatment, and never in treatment.

We compared three groups of injecting drug users in a large cross-sectional study on HIV/AIDS and risk behaviors in Sydney, Australia, to determine what differences existed between those who had never been in treatment (n = 458), had previously been in treatment (n = 387), and were currently in treatment (n = 367). Drug use for those currently in treatment was assessed during the last typical using month before treatment. Those previously and currently in treatment were similar in terms of drug use patterns and HIV risk-related injecting behaviors. Those never in treatment were younger, had a lower level of HIV risk-related injecting behaviors, and reported lower drug use and less involvement in the drug subculture. There was little difference between the three groups on HIV risk-related sexual behaviors. These data suggest that those never in treatment are less dysfunctional and possibly less involved in drug-using careers, whereas there appears to be a close relationship between being previously and currently in treatment.

Adult↗

Tretinoin emollient cream: a new therapy for photodamaged skin.

BACKGROUND: Tretinoin administered topically in 0.1% concentration has been shown to improve the wrinkling and irregular pigmentation of photoaged skin. OBJECTIVE: The purpose of this study was to assess the safety and efficacy of various concentrations of tretinoin in a new emollient cream base in the treatment of photoaged skin. METHODS: Three concentrations of tretinoin (0.05%, 0.01%, and 0.001%) in a new emollient cream formulation were compared with vehicle in a 24-week, double-blind, randomized, multicenter study of 296 subjects with photodamaged facial skin. RESULTS: Tretinoin emollient cream 0.05% gave a significantly better global response to therapy than vehicle (p less than 0.001), with 68% of subjects exhibiting improvement at the end of therapy, compared with 43% of subjects in the vehicle group. An excellent or good response was found in 26% of subjects treated with tretinoin emollient cream 0.05% versus 11% of vehicle-treated subjects. Fine wrinkling, mottled hyperpigmentation, and roughness were more improved in subjects who received tretinoin emollient cream 0.05% than in vehicle-treated subjects (p less than 0.05). No significant difference was found between vehicle and tretinoin emollient cream 0.01% or 0.001%. Histologic examination showed increases in epidermal and granular layer thickness, decreased melanin content and compaction of the stratum corneum after therapy with tretinoin emollient cream 0.05% or 0.01%. Mild to moderate skin reactions, such as erythema, peeling, and burning, were the most common side effects and, although most prevalent in the group using the 0.05% concentration, generally did not limit tretinoin use. CONCLUSION: Tretinoin emollient cream 0.05% appears to be safe and effective in the treatment of photodamaged skin.

Administration, Topical↗

Congenital aortic regurgitation: natural history and management.

OBJECTIVES AND BACKGROUND: Congenital aortic regurgitation is rare as an isolated lesion. We describe seven children with no physical features of the Marfan syndrome in the patients or their families and no other cardiac lesions who had congenital valvular aortic regurgitation. METHODS: From 1954 to the present, seven children with auscultatory and physiologic characteristics of aortic regurgitation were evaluated for a total of 108 patient-years. We report on their natural history, clinical and laboratory findings, management and outcome. RESULTS: In five of the seven children congenital aortic regurgitation was diagnosed in infancy. In four, progressive severity of the regurgitation led to valve replacement at age 3, 10, 15 and 20 years, respectively, and to resection of an aneurysm of the ascending aorta in the 10-year old patient. Two patients had cystic medial necrosis on aortic biopsy. One of these patients died after reoperation for dissecting aneurysm of the thoracic aorta at 22 years of age; the other died after dissection and rupture of the ascending aorta at age 25 years. After obstructing pannus developed, the 3-year old patient underwent replacement of the St. Jude valve at age 10 years. The other three patients were asymptomatic at last follow-up at age 8, 10 and 20 years, respectively. CONCLUSIONS: Supportive management is recommended until it becomes necessary to intervene surgically when regurgitation becomes severe. The need for surgical treatment is indicated by the appearance of a diastolic thrill, left ventricular strain on the electrocardiogram or other evidence of left ventricular dysfunction on the echocardiogram or exercise stress testing by treadmill or radionuclide cineangiocardiography. Close follow-up of these patients is important to detect progression of aortic regurgitation, especially in the presence of cystic medial necrosis.

Aortic Valve↗

Differences across sexual orientation on HIV risk behaviours in injecting drug users.

Injecting drug users (IDUs) play a disproportionate role in the spread of HIV given their injecting and sexual contacts, and thereby act as conduits between these risk groups. We investigated differences in risk behaviour and HIV seroprevalence in a Sydney sample of 1,245 IDUs. Significant differences were observed across sexual orientation in HIV serostatus for males, with homosexual men having the highest HIV seroprevalence rate (35%), bisexual men intermediate (12%) and heterosexual men lowest (3%). Sexual HIV risk behaviours were lowest for homosexual men, intermediate for bisexual men, and highest for heterosexual men in the case of condom use: however, for numbers of partners, seroprevalence, and anal sex the trends were reversed. There were no differences across sexual orientation for either sex for injecting drug risk behaviours. Both male and female respondents reported having more than 50% of sexual contacts while under the influence of drugs. This study suggests that risk reduction in the sexual domain has not generalized to the injecting risk domain regardless of sexual orientation, and demonstrates that sexual risk behaviours in IDUs are lowest in homosexual, intermediate in bisexual, and highest in heterosexual IDU men.

Adult↗

Alcohol and recreational drug use by HIV-seropositive homosexual men.

The objectives of this study were to describe the patterns of alcohol and recreational drug use of HIV-seropositive homosexual men and to determine the effect of alcohol use on HIV risk-taking behaviour. Of particular interest was the effect of knowledge of HIV status on these behaviours. Information on alcohol and drug use was obtained from 485 HIV-seropositive homosexual and bisexual men presenting to a HIV-antibody testing and medical management clinic. Heavy alcohol use was common, with 46.2% reporting consumption of six or more standard drinks on one day recently. Men who knew that they were HIV infected drank significantly more than those men who had yet to learn of their HIV status at the time of interview. There was clear evidence in this study for a role of alcohol use in HIV risk-taking behaviour. Almost one-third (27%) of the HIV-seropositive men reported unprotected anal intercourse during the previous 3 months with approximately one-third of these (27/76, 35.5%) nominating alcohol as contributing to their high HIV-risk behaviour.

Journal Article↗

Structure and measurement of dimensions of risk for HIV transmission in injecting drug users.

Dimensions of HIV infection risks were investigated in 1,245 injecting drug users (IDUs) in Sydney, Australia. Factor analysis of the degree of risk of the 33 items of risk behaviours revealed ten dimensions, which covered the domains of oral sex, withdrawal before ejaculation, protected intercourse, unprotected vaginal intercourse, saliva, blood products, manual sex, needles and syringes, unprotected anal sex, and social transmission. The perceived riskiness of particular activities closely approximated the objectively assessed risk of particular practices. Women assessed the risks of classes of activities (with the exception of oral sex) as being higher than did men. IDUs appear to have readily interpretable and consistent perceptions of HIV transmission risks, and these dimensions have utility for measuring perception and knowledge of HIV transmission risks.

Journal Article↗

Media sources of HIV/AIDS information in injecting drug users.

We report on media habits of 797 members of a sample of 1245 injecting drug users interviewed in Sydney, Australia. While preferred hours of television viewing and radio listening were similar to those of the general population, the preferred channels and stations were different. These findings could assist in targeting injecting drug users with information about HIV/AIDS prevention. However as the self-regulatory advertising process has constrained broadcast and publication of overt messages directed at homosexual and bisexual men, similar restrictions may prevent optimal mass media approaches to educating this other important group at risk of HIV infection.

Acquired Immunodeficiency Syndrome↗