PubMed Health⌕ Search

Biomedical subjects

A Ballantyne

Publications and source records attributed to A Ballantyne.

17 recordsLinked to original sources
PubMed2003

Comparison of the lateral release rates in the press fit condylar prosthesis and the PFC Sigma prosthesis.

There are many different total knee replacements on the market. Most have undergone design changes since they were introduced. The manufacturers claim these changes are necessary to improve outcomes of their products. Johnson and Johnson changed their press fit condylar (PFC) knee to PFC Sigma. One of the reasons for the change was to improve patella tracking by combining the deeply radiused trochlear groove of the PFC cruciate sacrificing knee with the natural asymmetrical valgus angle of the PFC cruciate retaining knee. In 1995 we started a prospective audit of our knee replacements. We analysed our early outcomes to test this theory. Group 1 consisted of 468 patients who underwent 543 PFC replacements. Group 2 consisted of 359 patients who underwent 423 Sigma knee replacements. An audit nurse saw all the patients preoperatively and an American Knee Society Score was done. Operative details were recorded. Patients were followed up by an audit nurse at a dedicated knee clinic. The same surgeons using the same instrumentation carried out the operations. The change in design reduced the lateral release rate by 50% from 32 to 16%. The complications were similar in both groups and there was no difference in the outcomes at 6 months. The change in design from the PFC to the Sigma knee has had an effect in reducing the lateral release rate, without affecting the early outcomes. We plan to continue this audit to see if the change leads to less patellar problems in the future.

Arthroplasty, Replacement, Knee↗
PubMed2003

Reduction of blood transfusion rates in unilateral total knee arthroplasty by the introduction of a simple blood transfusion protocol.

We prospectively studied blood transfusion practices within a single institution before and after the introduction of a blood transfusion protocol in consecutive patients undergoing unilateral total knee arthroplasty. Data were collected on 393 patients (group I) prior to and 295 patients (group II) after the introduction of the protocol. Following the introduction of the protocol, patients with preoperative haemoglobin of less than 11 g/dl were cross-matched prior to surgery. The criterion for postoperative transfusion was postoperative haemoglobin of less than 8.5 g/dl or a symptomatic patient with haemoglobin of greater than 8.5 g/dl. This change in practice reduced the transfusion rates from 31% in group I to 11.9% in group II. It reduced the non-utilisation of blood from 64 to 1%. There were no adverse outcomes related to the introduction of the protocol.

Aged↗
PubMed2001

Contralateral groin exploration is not justified in infants with a unilateral inguinal hernia.

BACKGROUND: In children undergoing a unilateral inguinal herniotomy, the contralateral groin is often explored on the basis of a high incidence of patency of the processus vaginalis. The patency rate is highest in infants but there are no data on the subsequent risk of contralateral hernia development purely in this population. This was a study of the incidence of contralateral inguinal hernia following unilateral inguinal herniotomy in infancy (aged less than 1 year). METHODS: All infants who underwent a unilateral inguinal herniotomy between January 1986 and December 1991 were studied retrospectively. RESULTS: One hundred and eighty-one infants (165 boys and 16 girls) were studied. Median gestational age was 37 (range 25-42) weeks and median age at operation was 87 (range 1-365) days. The herniotomy was right sided in 82.9 per cent of infants. Follow-up ranged from 5 to 10 years. A contralateral hernia/hydrocele developed in 14 infants (7.7 per cent). None of the hernias was incarcerated. Median time from operation to occurrence of the contralateral hernia was 18 (2-67) months. Gestational age, sex and the side of the hernia did not influence the incidence of contralateral hernia development. CONCLUSION: The low incidence of contralateral hernia development in infants undergoing a unilateral inguinal herniotomy does not justify routine contralateral groin exploration.

Female↗
PubMed2001

Behavioural profiles of children and adolescents after pre- or perinatal unilateral brain damage.

Recent case reports of individuals with early-onset damage to the prefrontal cortex have suggested that such early insults could result in severely impaired social behaviour in later childhood and adolescence. The investigators speculated that the acquisition of complex social conventions and moral rules had been impaired. In a large cohort of children, we sought to determine whether early focal brain insults might result in clinically significant behavioural or emotional problems. This study reports on 39 children with pre- or perinatal-onset unilateral brain damage (focal lesion) from cerebral infarction or intraparenchymal haemorrhage, using the Achenbach Child Behavior Checklist to assess the presence or absence of behavioural and emotional difficulties. Two-thirds of the subjects had left hemisphere (LH) lesions and one-third had right hemisphere (RH) lesions. Age range was 4.0-15.4 years at the time of questionnaire completion. Their results were compared with those of 54 control children. Analyses were conducted on focal lesion versus controls, RH versus LH lesion, frontal versus non-frontal lesion, and seizure versus non-seizure groups. When the effect of IQ was partialled out, there were no significant differences on the nine Behavior Problem scales, the Internalizing-Externalizing dichotomy or the Total Problem score for any of the group comparisons. Our subjects showed no evidence of clinically significant behavioural or emotional problems, even when the frontal lobe was involved. Individuals with more extensive and bilateral damage may be at higher risk of significant behavioural and emotional dysfunction than were those in our study population. In future studies of brain-behaviour relationships in developing children, all potential causes for any observed behavioural abnormalities, such as genetic and environmental factors and toxin exposure, must be considered before concluding that specific anatomical lesions are causally related to specific behavioural outcomes.

Adolescent↗
PubMed2001

Moving them on and in: the process of searching for and selecting an aged care facility.

This exploratory, descriptive study examined the search and selection process for an aged care facility following discharge of a family member from an acute setting. Few studies have examined this process and its effects on families. Individuals from 25 families where a family member had been recently admitted to an aged care facility following discharge from an acute setting were interviewed. This article reports participants' perceptions of the search and selection process and its effect on the family. Five major themes emerged from the data: good fortune, wear and tear on the sponsor, dealing with the system, urgency, and adjusting. The results can be used to inform and assist families and health professionals working with families in this situation.

Aged↗
PubMed2001

Coping with crisis: how Australian families search for and select an aged care facility for a family member upon discharge from an acute care setting.

Searching for, and selecting, an aged care facility for a family member upon his or her discharge from an acute setting is known, anecdotally, to be a challenge; but the process itself, and its effects on families, has seldom been examined. In this exploratory/descriptive study, face-to-face in-depth interviews were conducted with sponsors (often family members) of residents who had been admitted to an aged care facility within the past 90 days, following their discharge from an acute care setting. Where possible, both sponsor and resident were interviewed. This paper reports on the participants' perceptions of the search and selection process. Specific areas of interest were probed: Why and how the decision was made to seek residential placement; when and how the search for an aged care facility began; factors that were important in the family's final selection process; what happened when families, either initially or in the long term, were unable to find a place in an aged care facility; and the family's perspective about the efficacy of the search and selection process and its effect on the well being of the family. Residents are often passive in the search and selection process, while sponsors are often actively involved. Very few residents or sponsors consider planning for an aged care facility prior to hospitalisation, and there is often the perception by families of having very little support at this stressful and emotional time. The decision to relocate a family member in these circumstances is a stressful experience and should be viewed as a family crisis, particularly if unexpected such as upon discharge from an acute setting. These findings provide valuable insights that can be used to guide and assist families experiencing this process, as well as health care professionals working with families in this situation.

Adaptation, Psychological↗
PubMed2000

Immigrants and equitable health-care delivery in rural areas.

In response to settlement patterns in Australia, most immigrant specialist services and programs have been developed in metropolitan locations and large provincial cities. However, immigrants have also settled in smaller numbers in country locations. It is of concern, therefore, to consider how responsive and equitable health-care services can be delivered in country regions when immigrants do not reach the critical mass that would warrant the development of specialist services. This paper draws on a consultation conducted in South Australia to propose a way forward in linking country health services with local immigrant communities and immigrant specialist services in cities.

Cultural Diversity↗
PubMed1999

Vietnamese women and Pap smears: issues in promotion.

OBJECTIVE: Australian data indicate that Vietnamese-born women in Australia have a significantly higher incidence of cervical cancer than other Australian women. This study explored self-reported factors associated with Vietnamese-born women's participation in cervical screening. METHOD: A structured 60-item questionnaire was used to conduct an interview survey with 199 Vietnamese-born women over the age of 18 years and resident in Adelaide. RESULTS: Eighty-seven per cent (87%) of the women had heard of a Pap smear and 75% had had a test at some time. Reported participation increased with age, education level, marriage and length of stay in Australia. The family doctor was the most important source of information about Pap smears and the majority of the women reported they would have a smear if recommended by their doctor. Friends and family were the second information source about cervix screening. CONCLUSIONS AND IMPLICATIONS: These findings have clear implications for practice. Strategies to promote preventive health messages to this group of women should involve general practitioners and peer networks.

Adult↗
PubMed1998

Nursing competencies: ground work in aged and extended care.

Competencies have been formulated for entry level nurses. Specialist and generic advanced nursing competencies are also being developed. This paper describes exploratory groundwork on aged and extended care nursing competencies derived from interviews with nurses, allied health staff, residents and their families from one setting. Critical Incident Technique1 was used to guide semistructured interviews with 29 participants. A thematic analysis of the data suggests that the Australian Nursing Council Inc.2 competencies make a useful but incomplete contribution to understanding the perceived role of nursing in aged and extended care. A conceptual framework developed from the data illustrates the interdependence of competencies with the context in which they are observed. The framework proposes a number of elements which have the potential to offer a means to better interpret nursing competence (critical aspects) in aged and extended care contexts.

Aged↗
PubMed1997

Using critical incident technique to inform aged and extended care nursing.

Flanagan's critical incident technique was used to explore the beliefs of a cross-section of careers (both nursing and others) and consumers about the value of nursing and the nature of nursing's contribution in aged and extended care. The exploratory study found that nurses' being there, with and for residents, their families, and other health professionals, was influenced by two major themes that emerged from the data: personal and structural considerations. In this article, the potential of critical incident technique as a research method in nursing and for generating information about critical aspects of nursing work in aged and extended care is demonstrated.

Adult↗
PubMed1996

Disorders of affective and linguistic prosody in children after early unilateral brain damage.

Prosody is that quality of speech that imparts meaning by changes in intonation, pitch, and stress. The right hemisphere (RH) appears to be dominant for affective prosody in adults, while the left hemisphere (LH) mediates the more linguistic aspects of nonverbal communication. Few similar studies have been reported of individuals who suffered early unilateral brain damage, when brain reorganization or plasticity might be expected to play a role in ameliorating the adverse effects of focal brain damage. In this study, comprehension and expression of affective and linguistic prosody were tested in subjects with documented unilateral brain damage of pre- or perinatal onset and in matched controls. Both RH- and LH-lesion groups demonstrated difficulty on tasks involving expression of affective prosody, and on tests of linguistic prosody, compared with controls. Only the RH-lesion group was impaired on an affective comprehension task. The results indicate that even after very early unilateral brain damage, prosodic deficits may be present. However, only for affective comprehension does the side of the lesion appear to determine such deficits. The findings suggest that during brain development there is not clear brain lateralization for prosody and there may be bilateral representation for these skills during early development. There may be limitations to the ability of the developing brain to reorganize after early injury.

Adolescent↗
PubMed1996

Critical aspects of nursing in aged and extended care.

An ageing Australian population and improving medical retrieval technology have led to an increasing need for nurses to manage complex and acute health issues of ageing and chronic disability. In a study of aged and extended care involving nurses, residents, allied health professionals and family members, investigators used semi-structured interviews to identify critical aspects of nursing. The aim of the study was to begin to identify and illustrate a theoretical framework of "critical' nursing activities for aged and extended care. Two important themes to emerge were the structure of the health care setting and the characteristic behaviours of people associated with it. These themes reinforce the importance of treating people as individuals and of describing caring criteria in ways which reinforce holism.

Aged↗
PubMed1993

Comprehension and expression of affect in language-impaired children.

Eight children with developmental language impairment (LI) and eight age-, sex-, socioeconomic-status-, and I.Q.-matched controls were given tests of comprehension and expression of affective intent in spoken language and through facial expression. The LI children performed significantly more poorly than did controls in both comprehension and spontaneous expression of vocal affect. On tasks involving emotional facial expression, the opposite results were observed: The LI children were more dramatic in their expression of facial affect than were the controls. Children with language impairment appear to have a deficit in affective comprehension and expression that is modality-specific, i.e., limited to vocal affect. The heightened range of affective facial expression that they demonstrate may be a compensatory mechanism to offset their difficulties with vocal affect.

Adolescent↗
PubMed1977

Treatment of paracetamol (acetaminophen) poisoning with N-acetylcysteine.

Fifteen patients with paracetamol (acetaminophen) poisoning were treated with intravenous N-acetylcystein (300 mg/kg given over 20 h). Mean admission and 4 h plasma-paracetamol concentrations were 262 and 369 microgram/ml, respectively. Liver-function tests remained normal or were only slightly disturbed in 11 of 12 patients treated within 10 h of paracetamol ingestion. Severe liver damage developed in the other patient and in the three in whom treatment was started more than 10 h after paracetamol ingestion. In contrast to cysteamine, N-acetylcysteine was very well tolerated and has the advantage of being available as a pharmaceutical preparation in a 20% sterile solution.

Acetaminophen↗
PubMedDate not supplied

A collaborative approach to nursing field placement.

The numbers of nursing students undertaking pre-registration education in higher education courses in South Australia has expanded rapidly over the last four years. This paper describes collaboration between Schools of Nursing to coordinate student placements in clinical venues. A computerised system has been developed which is unique in Australia and its positive results are identified.

Education, Nursing, Baccalaureate↗