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Biomedical subjects

Peter O'Rourke

Publications and source records attributed to Peter O'Rourke.

At least 19 recordsLinked to original sources
PubMed2006

Quality-of-life in children and adolescents with cystic fibrosis managed in both regional outreach and cystic fibrosis center settings in Queensland.

OBJECTIVES: To assess the health-related quality-of-life (HRQOL) of children/adolescents with cystic fibrosis (CF) and compare HRQOL in children managed by cystic fibrosis outreach service (CFOS) with those treated in a cystic fibrosis center (CFC). To compare HRQOL of children with CF in Queensland with previously published HRQOL data from the United States and examine the relationship between HRQOL scores and pulmonary function. STUDY DESIGN: Participants were children/adolescents with CF and their parents managed by the Royal Children's Hospital Queensland at a CFC or CFOS. Two HRQOL surveys were used: PedsQL and Cystic Fibrosis Questionnaire (CFQ). RESULTS: There were 91 CFC and 71 CFOS participants with similar demographics. PedsQL total summary score was statistically higher in CFOS, P=.05. There was no significant difference in CFQ scores between groups. Queensland parents reported lower HRQOL for their children compared with US parents (P<.01) despite similar pulmonary function. Declining pulmonary function correlated with worse CFQ scores in adolescents, P<.05. CONCLUSIONS: Children living in regional Queensland reported as good as or slightly better HRQOL compared with children attending a CFC. Parent proxy HRQOL scores were generally low suggesting a reduced perception of HRQOL by parents for their children.

Adolescent↗
PubMed2006

Maternal and fetal outcome after severe anemia in pregnancy in rural Ghana.

BACKGROUND: Anemia in pregnancy contributes to poor outcome for mother and child in low-income countries. This study analyzes adverse maternal and fetal outcome after severe anemia in pregnancy in rural Ghana. METHODS: A cohort study in two (sub)district hospitals, including 157 pregnant women exposed to severe anemia (Hb < 8.0 g/dl) and 152 nonexposed pregnant women (Hb > or = 10.9 g/dl), matched for age and parity strata. Adverse outcomes analyzed were postpartum hemorrhage, need for blood transfusion, maternal mortality, low birth-weight, and perinatal mortality. RESULTS: Compared to nonexposed women, exposed women had an increased risk of maternal death (5/157 versus 0/152). Fetal outcome did not significantly differ between the study groups, although perinatal mortality was increased with exposure to Hb < 7.0 g/dl (OR 3.1; 95% CI 1.0-9.4), and low birth-weight was increased with exposure to Hb < 6.0 g/dl (OR 2.5; 95% CI 1.2-5.4). Overall fetal outcome was significantly better when hemoglobin prior to childbirth was at least 8.0 g/dl (OR 3.9; 95% CI 1.6-9.6), body mass index at least 20 kg/m2 (OR 2.8; 95% CI 1.5-5.3), and number of antenatal visits at least 4 (OR 2.0; 95%CI 1.1-3.7). CONCLUSIONS: Severe anemia in pregnancy results in relatively poor maternal and fetal outcome. Apparently maternal risks increase prior to fetal risks. In order to improve maternal and fetal outcome, it is recommended that district hospitals in low-income countries make prevention, early diagnosis, and treatment of severe anemia in pregnancy a priority.

Adolescent↗
PubMed2006

Severe anemia in pregnancy in rural Ghana: a case-control study of causes and management.

BACKGROUND: Various factors contribute to severe anemia in pregnancy in low-income countries. This study assesses which of these are of importance in rural Ghana, and evaluates management. METHODS: Prospective case-control study in two (sub)district hospitals in rural Ghana among 175 severely anemic pregnant women (Hb < 8.0 g/dl), receiving a comprehensive treatment package; and 152 non-anemic pregnant women (Hb > or = 10.9 g/dl), giving birth at the study hospitals, matched for age and parity. Evaluated characteristics were need for treatment for urinary tract infection and schistosomiasis; sickle cell and HIV status; antenatal care characteristics; and Hb increase after treatment. Statistical analysis included Chi square test and general linear modeling. RESULTS: Associated with severe anemia were multiple pregnancy (OR 8.9; 95%CI 1.1-71.0), urinary tract infection (OR 6.2; 95%CI 3.5-11.0), residence outside study (sub)district (OR 2.7; 95%CI 1.7-4.3), body mass index < 20.0 (OR 2.0; 95%CI 1.2-3.4), and less than 4 antenatal clinic visits (OR 1.9; 95%CI 1.2-3.0). No association was found with sickle cell or HIV status, schistosomiasis treatment, blood loss in pregnancy, or gestational age at antenatal care registration. After treatment, mean Hb in the severe anemia group increased by 3.2 g/dl, significantly more than in the control group (0.2 g/dl; p<0.001). Modeling showed that the number of antenatal visits and the lowest Hb together explained approximately 25% of the variability in Hb prior to childbirth among women with severe anemia. CONCLUSIONS: Treatable causes contribute considerably to severe anemia in pregnancy in low-income countries. Even with limited resources, a substantial increase of Hb can be achieved.

Adolescent↗
PubMed2006

Prognostic indicators for open globe injury.

BACKGROUND: The purpose of the study is to identify factors predictive of outcome after open globe injury in 273 patients admitted to the Royal Brisbane Hospital, Queensland, Australia between 1992 and 2003. METHODS: Data were collected retrospectively regarding demographic and geographical factors, injury circumstances, initial visual acuity (VA), injury parameters, details of initial and subsequent surgery, final best corrected VA and complications. Multivariate analysis using binary logistic regression was utilized to identify which factors were related to outcome. RESULTS: 83% of patients were male, with a mean age of 38.3 years. The mean duration of follow up was 16.6 months and 58% of patients (135 of 231) achieved an overall improvement in their vision. Forty-one cases (15%) were enucleated, with half of these cases performed primarily. The prognostic factors indicating the likelihood of a VA of counting fingers or worse were poor initial VA, a large laceration >10 mm and the presence of a relative afferent pupil defect. Rural patients had a significantly worse final VA than city dwellers and had higher rates of endophthalmitis and enucleation. CONCLUSIONS: Assessment of prognostic factors at the time of presentation of an open globe injury enables realistic expectations of final visual outcome by the doctor and the patient. In order to improve outcomes in patients from rural areas, access to specialized eye services need to be upgraded.

Adolescent↗
PubMed2005

Tutoring in problem-based learning medical curricula: the influence of tutor background and style on effectiveness.

BACKGROUND: Evidence for the superiority of particular characteristics in PBL tutors in medical curricula is generally inconclusive. Most studies have investigated the effectiveness of content experts compared with that of non-experts as measured either by student satisfaction or academic achievement. A few have compared academic staff tutors with student tutors. The purpose of this study was to investigate the relationship between students' perception of overall tutor effectiveness, particular tutor behaviours, clinical qualifications and academic appointment. METHOD: A questionnaire designed to evaluate particular aspects of PBL tutoring technique, related either to subject-matter knowledge or to process-facilitation skill, as well as overall effectiveness, was distributed to students in first year of a PBL medical program at the end of each of three tutor terms. A total of 76 tutor terms were included in the study. Data analysis compared clinical with non-clinical tutors, and staff with non-staff tutors. RESULTS: Clinically qualified tutors used their subject-matter knowledge significantly more than non-clinical tutors and were seen as being more empathic with their students. Staff tutors placed more emphasis on assessment than non-staff tutors and were seen as having greater skill in establishing and maintaining an environment of cooperation within their PBL groups than non-staff tutors. CONCLUSION: These results suggest that both subject-matter knowledge and process-facilitation skills are necessary but not individually sufficient characteristics of effective tutors.

Analysis of Variance↗
PubMed2005

A clinical pathway for bronchiolitis is effective in reducing readmission rates.

OBJECTIVE: To examine the use of a clinical pathway in the management of infants hospitalized with acute viral bronchiolitis. STUDY DESIGN: A clinical pathway with specific management and discharge criteria for the care of infants with bronchiolitis was developed from pathways used in tertiary care pediatric institutions in Australia. Two hundred and twenty-nine infants admitted to hospital with acute viral bronchiolitis and prospectively managed using a pathway protocol were compared with a retrospective analysis of 207 infants managed without a pathway in 3 regional and 1 tertiary care hospital. RESULTS: Readmission to hospital was significantly lower in the pathway group (P = .001), as was administration of supplemental fluids (P = .001) and use of steroids (P = .005). There were no differences between groups in demographic factors or clinical severity. The pathway had no overall effect on length of stay or time in oxygen. CONCLUSIONS: A clinical pathway specifying local practice guidelines and discharge criteria can reduce the risk of readmission to hospital, the use of inappropriate therapies, and help with discharge planning.

Acute Disease↗
PubMed2005

Opportunities for health promotion in the Queensland women's prison system.

OBJECTIVE: To compare the health of Queensland women prisoners with that of community women using the target areas of public health promotion identified by Health Determinants Queensland as a framework. METHODS: Data from the Queensland Women Prisoners' Health Survey was compared with published community data in each of the target areas. RESULTS: Queensland women prisoners had poorer nutrition, did less exercise, had higher rates of smoking and had a greater prevalence of asthma and diabetes than women in the community. They seemed to have a greater prevalence of mental health disorders. CONCLUSIONS: Within the framework, women prisoners had significantly poorer measured outcomes than community women in all areas except cervical screening, breast cancer screening and overweight and obesity. IMPLICATIONS: The Health Determinants Queensland target areas for Queensland women are of even greater priority in the subgroup of women prisoners. Benefits for the health of prisoners, and therefore the community, could be gained by expanding existing community health promotion activities to prisons through collaboration and partnerships.

Adolescent↗
PubMed2005

General practitioner, specialist providers case conferences in palliative care--lessons learned from 56 case conferences.

OBJECTIVE: To describe the utility and acceptability to general practitioners and palliative care staff of case conferences in palliative care. METHOD: Research focussed on case conferences conducted between GPs and staff of three specialist palliative care units (in an inner urban, outer metropolitan and regional setting), at the time of referral of patients to the service. Telephone interviews were conducted with all GPs who participated in a case conference, and focus groups were conducted with palliative care staff. RESULTS: For most GPs, case conferences by teleconference were a time effective and immediate means of information transfer. The best instances for a conference were at time of patient referral, time of discharge to the community, or where the case was complex. General practitioners appreciated access to multiple professionals simultaneously. Workload pressures were a drawback of participation for both GPs and specialists. Palliative care team members thought case conferences gave GPs an appreciation of a team approach, and reduced professional isolation. The usefulness of the case conferences depended on the willingness of the GP to participate. General practitioners would participate again provided they did not have to organise the case conference. Specialist staff were concerned by the financial cost of organising case conferences. DISCUSSION: Case conferences provide useful information exchange between GPs and specialist staff, and are acceptable to both parties. Much depends on the individual GPs attitude toward participation, as well as the timing of the conferences in the course of the patient's illness. Organisation needs to be a task of the specialist units, who would need administrative support to organise them.

Attitude of Health Personnel↗
PubMed2004

Diagnostic accuracy of and patient satisfaction with telemedicine for the follow-up of paediatric burns patients.

Videoconferencing has become a routine technique for the post-acute burns care of children in Queensland. We compared the agreement between clinical assessments conducted via videoconference and assessments conducted in the conventional, face-to-face manner (FTF). A total of 35 children with a previous burn injury were studied. Twenty-five children received three consecutive assessments: first FTF by a consultant in the outpatient department, then by a second consultant who reviewed the patient via videoconference, and then by the second consultant in person. The second consultant also reviewed another 10 children twice. At each review, the following variables were measured: scar colour, scar thickening, contractures, range of motion, the patient's level of general activity, any breakdown of the graft site, and adequacy of the consultation. Agreement between the two consultants when seeing patients FTF was moderately high, with an overall concordance of 85%. When videoconferencing was used, the level of agreement was almost the same, at 84%. If one consultant reviewed patients FTF first and then via videoconference, the overall concordance was 98%; if the process was reversed, the overall concordance was 97%. This study confirms that the quality of information collected during a videoconference appointment is comparable to that collected during a traditional, FTF appointment for a follow-up burns consultation.

Ambulatory Care↗
PubMed2004

Myeloma with predominant phalangeal involvement.

A case of plasma cell myeloma involving the middle phalanx of the ring finger is reported. This was a case of a non-secretory myeloma; however, monoclonal immunoglobulins were demonstrated by immunohistochemical studies. Plasma cell myeloma with phalangeal involvement is extremely rare: our literature search disclosed only two well-documented cases. Plasma cell myeloma may occur in the hand, so it should be considered in the pre-biopsy differential diagnosis when bone lesions radiologically consistent with myeloma are encountered.

Biopsy, Needle↗
PubMed2004

Haemochromatosis--a future focus for continuing education in general practice.

INTRODUCTION: This study aimed to assess the educational needs of general practitioners with regards to the diagnosis and management of hereditary haemochromatosis. METHODS: A questionnaire was mailed to all 216 GPs in a suburban division of general practice, with a response rate of 91 (42.1%). The survey covered GPs knowledge of the symptoms, signs, diagnosis, management and prognosis of haemochromatosis; attitudes toward management; beliefs regarding the prevalence of haemochromatosis and its relationship to other conditions; and management practices. RESULTS: The relative prevalence, symptoms, signs, diagnostic requirements and prognostic factors associated with haemochromatosis were generally well recognised. The specifics of management is an area of educational need; in particular, venesection goals, dietary recommendations and the role of liver biopsy in diagnosis. Respondents were generally not comfortable managing haemochromatosis without specialist support, most commonly from a gastroenterologist. Of 80% of GPs who reported having patients with haemochromatosis, 41% primarily managed the condition. DISCUSSION: The management of haemochromatosis in general practice could be improved by an educational campaign targeting GPs and the referral of uncomplicated patients back to their GPs from specialist services.

Adult↗
PubMed2003

A multicenter, randomized, double-blind, controlled trial of nebulized epinephrine in infants with acute bronchiolitis.

BACKGROUND: The treatment of infants with bronchiolitis is largely supportive. The role of bronchodilators is controversial. Most studies of the use of bronchodilators have enrolled small numbers of subjects and have examined only short-term outcomes, such as clinical scores. METHODS: We conducted a randomized, double-blind, controlled trial comparing nebulized single-isomer epinephrine with placebo in 194 infants admitted to four hospitals in Queens-land, Australia, with a clinical diagnosis of bronchiolitis. Three 4-ml doses of 1 percent nebulized epinephrine or three 4-ml doses of normal saline were administered at four-hour intervals after hospital admission. Observations were made at admission and just before, 30 minutes after, and 60 minutes after each dose. The primary outcome measures were the length of the hospital stay and the time until the infant was ready for discharge. The secondary outcome measures were the degree of change in the respiratory rate, the heart rate, and the respiratory-effort score and the time that supplemental oxygen was required. RESULTS: There were no significant overall differences between the groups in the length of the hospital stay (P=0.16) or the time until the infant was ready for discharge (P=0.86). Among infants who required supplemental oxygen and intravenous fluids, the time until the infant was ready for discharge was significantly longer in the epinephrine group than in the placebo group (P=0.02). The need for supplemental oxygen at admission had the greatest influence on the score for severity of illness and strongly predicted the length of the hospital stay and the time until the infant was ready for discharge (P<0.001). There were no significant changes in the respiratory rate, blood pressure, or respiratory-effort scores from before each treatment to after each treatment. The heart rate was significantly increased after each treatment with epinephrine (P=0.02 to P<0.001). CONCLUSIONS: The use of nebulized epinephrine did not significantly reduce the length of the hospital stay or the time until the infant was ready for discharge among infants admitted to the hospital with bronchiolitis.

Acute Disease↗
PubMed2003

Mothers' health post-partum and their patterns of seeking vaccination for their infants.

A cohort of 159 mothers were recruited post-partum and followed for seven months to examine the relationship between mothers' health post-partum and their patterns of seeking vaccination for their infants. Vaccination records for infants were obtained from a state-wide database. Only 44% of the mothers had maintained all age-appropriate vaccinations for their infant up to six months of age. Mothers who had two or more older children were four times more likely to have an infant who was not age-appropriately vaccinated at six months. Women experiencing mental health problems including anxiety and depression, seven months following the birth, were between three to five times more likely to have started the vaccination schedule late or not at all. The findings have implications for midwives and for nurses practising in maternal and child health, paediatrics and public health environments. Strategies focusing on enhancing mothers' psychosocial well-being postnatally through improved service delivery should improve their patterns of seeking vaccination for their infants.

Adolescent↗
PubMed2003

The clinical reasoning characteristics of diagnostic experts.

The aim of this study was to identify and describe the clinical reasoning characteristics of diagnostic experts. A group of 21 experienced general practitioners were asked to complete the Diagnostic Thinking Inventory (DTI)and a set of 10 clinical reasoning problems (CRP) to evaluate their clinical reasoning. Both the DTI and the CRPs were scored, and the CRP response patterns of each GP examined in terms of the number and type of errors contained in them. Analysis of these data showed that six GPs were able to reach the correct diagnosis using significantly less clinical information than their colleagues. These GPs also made significantly fewer interpretation errors but scored lower on both the DTI and the CRPs. Additionally, this analysis showed that more than 20% of misdiagnoses occurred despite no errors being made in the identification and interpretation of relevant clinical information. These rests indicate that these six GPs diagnose efficiently,effectively and accurately using relatively few clinical data and can therefore be classified as diagnostic experts. They also indicate that a major cause of misdiagnoses is failure to properly integrate clinical data. We suggest that increased emphasis on this step in the reasoning process should prove beneficial to the development of clinical reasoning skill in undergraduate medical students.

Adult↗
PubMed2003

Clinical reasoning: the relative contribution of identification, interpretation and hypothesis errors to misdiagnosis.

The aim of this study was to identify and describe the types of errors in clinical reasoning that contribute to poor diagnostic performance at different levels of medical training and experience. Three cohorts of subjects, second- and fourth- (final) year medical students and a group of general practitioners, completed a set of clinical reasoning problems. The responses of those whose scores fell below the 25th centile were analysed to establish the stage of the clinical reasoning process--identification of relevant information, interpretation or hypothesis generation--at which most errors occurred and whether this was dependent on problem difficulty and level of medical experience. Results indicate that hypothesis errors decrease as expertise increases but that identification and interpretation errors increase. This may be due to inappropriate use of pattern recognition or to failure of the knowledge base. Furthermore, although hypothesis errors increased in line with problem difficulty, identification and interpretation errors decreased. A possible explanation is that as problem difficulty increases, subjects at all levels of expertise are less able to differentiate between relevant and irrelevant clinical features and so give equal consideration to all information contained within a case. It is concluded that the development of clinical reasoning in medical students throughout the course of their pre-clinical and clinical education may be enhanced by both an analysis of the clinical reasoning process and a specific focus on each of the stages at which errors commonly occur.

Attitude of Health Personnel↗