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Biomedical subjects

Ian Cameron

Publications and source records attributed to Ian Cameron.

9 recordsLinked to original sources
PubMed2007

Acupuncture for neck disorders.

STUDY DESIGN: Systematic review. OBJECTIVE: To determine the effects of acupuncture for individuals with neck pain. SUMMARY OF BACKGROUND DATA: Neck pain is one of the 3 most frequently reported complaints of the musculoskeletal system. Treatments for neck pain are varied, as are the perceptions of benefits. METHODS.: We searched CENTRAL (2006, issue 1) and MEDLINE, EMBASE, MANTIS, Cumulative Index to Nursing and Allied Health Literature from their beginning to February 2006. We searched reference lists and the acupuncture database TCMLARS in China. Any published trials using randomized (RCT) or quasi-randomized (quasi-RCT) assignment to the intervention groups, either in full text or abstract form, were included. RESULTS: We found 10 trials that examined acupuncture treatments for chronic neck pain. Overall, methodologic quality had a mean of 2.3 of 5 on the Jadad scale. For chronic mechanical neck disorders, there was moderate evidence that acupuncture was more effective for pain relief than some types of sham controls, measured immediately posttreatment. There was moderate evidence that acupuncture was more effective than inactive, sham treatments measured immediately posttreatment, and at short-term follow-up (pooled standardized mean difference, -0.37; 95% confidence interval, -0.61 to -0.12). There was limited evidence that acupuncture was more effective than massage at short-term follow-up. For chronic neck disorders with radicular symptoms, there was moderate evidence that acupuncture was more effective than a wait-list control at short-term follow-up. CONCLUSIONS: There is moderate evidence that acupuncture relieves pain better than some sham treatments, measured at the end of the treatment. There is moderate evidence that those who received acupuncture reported less pain at short-term follow-up than those on a waiting list. There is also moderate evidence that acupuncture is more effective than inactive treatments for relieving pain posttreatment, and this is maintained at short-term follow-up.

Acupuncture Therapy↗
PubMed2006

Postgraduate medical placements in rural areas: their impact on the rural medical workforce.

INTRODUCTION: In 1988, the New South Wales (NSW) Department of Health developed the NSW Rural Resident Medical Officer Cadetship Program (Cadetship Program) to help overcome a junior doctor workforce shortage in rural hospitals. A second aim was to increase recruitment to the rural medical workforce on the basis that positive exposure to rural medicine increases the likelihood of choosing to practice in a rural location. The Cadetship Program offers bonded scholarships which provide financial support for residents of NSW studying medicine during the final 2 years of their medical degree. In return, cadets are contracted to complete 2 of their first 3 postgraduate years in the NSW rural hospital network. NSW Rural Doctors Network has managed the Cadetship Program for the NSW Department of Health since 1993, and carried out an evaluation in 2004. The purpose of this evaluation was to track the career choice and practice location of medical students entering the Cadetship Program before 1999, and to comment on the impact of the Program on the rural medical workforce in NSW to date, and its implications for the future workforce. METHODS: The career choice and practice locations of 107 medical students who received cadetships between 1989 and 1998 were tracked. Students who did not graduate from medical school (n = 3) or who did not complete their rural service (13) were excluded from the analysis. Career choice was not available for a further nine former cadets and they were also excluded from the analysis. The NSW Rural Doctors Network was the major source of data on career choice and practice location due to its role in administering the Cadetship Program on behalf of the NSW Department of Health. Two brief questionnaires targeting specific groups of cadets were used to fill knowledge gaps about where cadets grew up, what vocational training they undertook, and where they were working in 2004. Where this information was not obtained from cadets first hand, it was sourced from the CD-ROM version of the Medical Directory of Australia. RESULTS: Forty-three percent of cadets entering the Program before 1999 were working in rural locations in 2004 (compared with 20.5% of medical practitioners nationally), 46% had attended primary school in a rural location and 44% chose to specialize in general practice. Career choice was the major determinant of practice location. Having a rural background did not appear to influence practice location; whereas, those specialising in general practice made up 70% of this cohort of cadets working in rural areas. All general practice trainees were in rural locations compared with only two of the 25 trainee specialists, which reflects the availability of accredited training places in rural Australia. CONCLUSIONS: The Cadetship Program, which ensures junior doctors work for 2 of their first 3 postgraduate years in a rural allocation centre, is an effective link between medical school and rural practice, particularly rural general practice. Providing vocational training opportunities in rural locations is central to this success, and needs to be considered in efforts to expand the rural specialist workforce, and in ensuring rural health capitalises on the increasing number of medical students moving through the education and training system in the next 4-10 years.

Career Choice↗
PubMed2006

Effects of prenatal marijuana on visuospatial working memory: an fMRI study in young adults.

The long lasting neurophysiological effects of prenatal marijuana exposure on visuospatial working memory were investigated in 18-22 year olds using functional magnetic resonance imaging (fMRI). The participants are members of the Ottawa Prenatal Prospective Study (OPPS), a longitudinal study that provides a unique body of information collected from each participant over 20 years, including prenatal drug history, detailed cognitive/behavioral performance from infancy to young adulthood, and current and past drug usage. This information allowed for the control of potentially confounding drug exposure variables in the statistical analyses. Thirty-one offspring from the OPPS (16 prenatally exposed and 15 nonexposed) performed a visuospatial 2-back task while neural activity was imaged with fMRI. Cognitive performance data were also collected. No significant performance differences were observed when comparing controls versus exposed participants. Multiple regression analyses (including controls with no exposure) revealed that as the amount of prenatal marijuana exposure increased, there was significantly more neural activity in the left inferior and middle frontal gyri, left parahippocampal gyrus, left middle occipital gyrus and left cerebellum. There was also significantly less activity in right inferior and middle frontal gyri. These results suggest that prenatal marijuana exposure alters neural functioning during visuospatial working memory processing in young adulthood.

Adolescent↗
PubMed2004

Antibiotic prophylaxis in hip fracture surgery: a metaanalysis.

A metaanalysis was done to identify the most effective prophylactic antibiotic regimen in hip fracture surgery. Specific comparisons addressed were antibiotics at any dose versus placebo, multiple doses (>24 hours coverage) versus one dose of antibiotics, and multiple doses versus 24 hours antibiotic coverage. Outcomes measured included overall wound infections, deep wound infection, superficial wound infection, urinary tract infection, and mortality. A computer search of the Medline and EMBASE databases (English language literature from 1966 to 2000 and 1988 to 2000, respectively) retrieved 15 randomized controlled trials which addressed the specific aims. Most studies evaluated antibiotics from the cephalosporin group. Antibiotic prophylaxis significantly reduced overall wound infections when compared with placebo and was equally effective for deep and superficial infections. One dose of intravenous antibiotics seemed no different than multiple doses. Antibiotic use also was associated with a significant reduction in the incidence of urinary tract infection but had no significant effect on mortality.

Aged↗
PubMed2003

A UK survey of psychiatric services for older people in general hospitals.

BACKGROUND: Psychiatric illness is common in older people in general hospitals, but little is known of the service models operating in the UK, or of the views of old age psychiatrists regarding service provision in this area. We set out to determine the range of UK old age psychiatry service models for older people in general hospital wards, and the opinions of clinicians on future service priorities and development. METHOD: A postal questionnaire survey of old age psychiatrists providing psychiatric services to older people in general hospital wards. RESULTS: 73% of services were provided through a generic, sector-based, consultation psychiatry model. The remaining 27% employed a range of general hospital-based liaison psychiatry services for older people, involved in proactively seeking referrals and educating general hospital staff. Those providing a generic sector-based model were significantly slower at responding to referrals. 89% of respondents were unhappy with their service to older people in general hospital wards, with only 11% preferring the generic sector-based model. Organisational barriers to change identified included the management of mental health care and physical care by different organisations. Training, both of psychiatric staff in this specialist area, and of general hospital staff in the detection and basic management of common psychiatric conditions in the general hospital setting, was felt to be necessary. CONCLUSIONS: The management of co-morbid psychiatric and physical illness in older people is an important issue for health services. Old age psychiatrists are unhappy with the prevalent, reactive, consultation-based model, preferring a range of liaison psychiatry models based in the general hospital. The most important barriers to service development in this area were the separate managerial arrangements for psychiatric and physical care services, and a lack of evidence for effective old age psychiatry services in this setting.

Aged↗
PubMedDate not supplied

Effects of prenatal marijuana on response inhibition: an fMRI study of young adults.

The neurophysiological effects of prenatal marijuana exposure on response inhibition were assessed in 18- to 22-year-olds. Thirty-one participants from the Ottawa Prenatal Prospective Study (OPPS) performed a blocked design Go/No-Go task while neural activity was imaged with functional magnetic resonance imaging (fMRI). The OPPS is a longitudinal study that provides a unique body of information collected from each participant over 20 years, including prenatal drug history, detailed cognitive/behavioral performance from infancy to young adulthood, and current and past drug usage. The fMRI results showed that with increased prenatal marijuana exposure, there was a significant increase in neural activity in bilateral prefrontal cortex and right premotor cortex during response inhibition. There was also an attenuation of activity in left cerebellum with increased prenatal exposure to marijuana when challenging the response inhibition neural circuitry. Prenatally exposed offspring had significantly more commission errors than nonexposed participants, but all participants were able to perform the task with more than 85% accuracy. These findings were observed when controlling for present marijuana use and prenatal exposure to nicotine, alcohol and caffeine, and suggest that prenatal marijuana exposure is related to changes in neural activity during response inhibition that last into young adulthood.

Adolescent↗