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Biomedical subjects

L Barclay

Publications and source records attributed to L Barclay.

At least 37 records · Page 2Linked to original sources
PubMed1999

The experiences of new fatherhood: a socio-cultural analysis.

For most men, first-time fatherhood involves significant changes in self-identity and their relationship with their female partner. This paper presents some findings from a longitudinal, qualitative study into the first 6 months of new fatherhood for a group of 15 Australian men. The discussion draws on a series of semistructured interviews undertaken on a minimum of four occasions from a few days before the child was born until 5-6 months after birth. We found that first-time fathering in contemporary western society requires men to be simultaneously provider, guide, household help and nurturer. The demands of these roles, and the tensions they sometimes produce, challenge men's relationships with their female partners, the meaning and place of work in their lives and their sense of self as competent adults. Almost all the men we interviewed found the early weeks and months of fatherhood more uncomfortable than rewarding, despite looking forward to fatherhood very positively. Their experience appeared more closely aligned to their difficulties with meeting social expectations and roles rather than individual deficits.

Adult↗
PubMed1999

Activities and interactions in level II nurseries: a report of an ethnographic study.

This article reports an ethnographic study that examines the context and nature of the interactions between health professionals and parents in two Australian level II nurseries: 724 observations were recorded over an 18-week period. Analysis revealed that although the presence of mothers in the nursery was high, registered nurses remain the primary caretakers of the infants. The interactions between registered nurses and mothers were found to be action- or task-oriented with communication largely being described as "instrumental." The results of this pilot work suggest that the emphasis of clinical practice in level II nurseries remains focused on caring for the infant and teaching the mother. This is in contrast to the current body of literature that identifies the need for a family-centered approach to care that aims to support parents as they develop confidence, attach to their baby, and become skilled in providing care themselves.

Adult↗
PubMed1999

Are we providing adequate postnatal services?

Over the past 10 years, there have been significant changes to postnatal services. There is insufficient research that evaluates the effect these changes have on the physical and psychological outcomes of women and families or the level of support women and children actually require in the first postnatal year. We argue that there is an urgent need for research which tests the outcomes and cost effectiveness of different models of postnatal care currently being offered. The most rigorous research methods possible are necessary to provide robust evidence to prevent the degradation of postnatal maternity services. This research should evaluate the relative advantages and disadvantages of different models of postnatal care as well as describe the content and quality of postnatal services. Knowledge gained from such research would and should assist the development of recommendations and policies for postnatal midwifery and early childhood practice in Australia.

Female↗
PubMed1999

Connection and pleasure, disruption and distress: women's experience of breastfeeding.

Interview data collected in a recent study of first time motherhood were used to explore the experience of breastfeeding. Twenty-five Australian women participated in a series of semistructured interviews begun during late pregnancy and continuing until 6 months postpartum. Discourse analysis was used to examine the transcribed data. The analysis revealed that breastfeeding was central to these women's experience of motherhood. The majority of women were strongly committed to breastfeeding. Their decision to breastfeed was influenced by a range of public and professional discourses. Breastfeeding was also an embodied experience that was difficult to articulate. For some, this embodied experience was connected, harmonious and pleasurable and for others, disruptive, unpleasant, and violent. This paper describes the embodied experience of breastfeeding and highlights the complexity of the relationship between embodied experience and contemporary meanings and context of breastfeeding.

Adaptation, Psychological↗
PubMed1998

Recent immigration and the misery of motherhood: a discussion of pertinent issues.

In this paper it is assumed that the high rates of misery experienced by most new mothers in contemporary Western society are socially and culturally induced. Women from non-English-speaking backgrounds (NESB) recuperate from the stress of birth, often further complicated by morbidity from intervention, frequently alone and without practical household help. They often embark on their new mothering role with little support or guidance. In a Western society which markets a romanticized Anglo image of motherhood, where happy, contented, smiling babies and glamorous mothers appear as the norm, it is not surprising that women from NESB find becoming a mother in Australia difficult. Their difficulties are exacerbated as they frequently come from cultures where women are nurtured, valued and supported at this time in their lives. These women are often socially isolated in their new country, within an alien health system and separated from their normal birth and postpartum practices. Their misery can only be imagined, as mostly it is hidden and suffered alone. Providing a diagnosis of depression in women who are unhappy, but not clinically depressed, is likely to be even less helpful and more damaging for NESB women than for Anglo-Australian women. A diagnosis of depression excuses Western society for accepting responsibility for alleviating the isolation of new mothers by labelling them as 'sick'.

Attitude to Health↗
PubMed1998

Abnormalities for chromosomes 13 and 21 detected in spermatozoa from infertile men.

Sperm samples from infertile men with oligozoospermia or teratozoospermia were studied by multicolour fluorescence in-situ hybridization (FISH) using DNA probes for chromosomes 13 and 21. A total of 90 809 sperm nuclei from nine infertile men and 182 799 sperm nuclei from 18 control donors were analysed. There was a highly significant increase in the frequency of spermatozoa disomic for chromosome 13 in infertile patients (0.28%) compared to control donors (0.13%) (two-tailed Z statistic P < 0.0001) and for chromosome 21 (0.48% in infertile men versus 0.37% in controls, P < 0.0001). Also there was a significantly increased frequency of diploid spermatozoa in infertile men (0.85%) compared to control donors (0.66%) (P < 0.0001). Our previous studies on these same infertile patients demonstrated increased frequencies of sperm disomy for chromosomes 1 and XY. This suggests that infertile men, who are prime candidates for intracytoplasmic sperm injection, may be at a very small increased risk of aneuploid offspring.

Adult↗
PubMed1997

An outbreak of influenza B among workers on an oil rig.

An outbreak of influenza B occurred in December 1996 on an oil rig in Darwin Harbour. The outbreak affected 56% of the workers on the rig. An outbreak in December is outside the usual Australian influenza season of June to September, but is consistent with other tropical regions, where outbreaks can occur throughout the year. Influenza vaccination could prevent similar outbreaks in confined workplaces.

Disease Outbreaks↗
PubMed1997

Chromosomal abnormalities in sperm from testicular cancer patients before and after chemotherapy.

Sperm chromosome abnormalities were assessed in testicular cancer patients before and after treatment with BEP (bleomycin, etoposide, cisplatin). The frequencies of disomy for chromosomes 1, 12, X, Y and XY were assessed along with diploid frequencies and sex ratios by multicolour fluorescence in situ hybridization (FISH). For each cancer patient, a minimum of 10,000 sperm was assessed for each chromosome probe before and after chemotherapy (CT). Data was analysed "blindly" by coding the slides. A total of 161097 sperm were analyzed, 80,445 before and 80,642 after treatment. The mean disomy frequencies were 0.11% pre-CT vs 0.06% post-CT for chromosome 1, 0.18% vs 0.15% for chromosome 12, 0.10% vs 0.9% for the X chromosome, 0.13% vs 0.10% for the Y chromosome and 0.25% vs 0.20% for XY sperm. There was no significant difference in the frequency of disomy pre-CT vs post-CT for any chromosome except that chromosome 1 demonstrated a significant decrease after CT. The "sex ratios" and frequency of diploid sperm were also not significantly different in pre and post-CT samples with 50.2% X-bearing sperm pre-CT and 50.5% X post-CT and 0.14% diploid sperm pre-CT vs 0.15% diploid sperm post-CT. There was no significant donor heterogeneity among the cancer patients. None of the values in the cancer patients differed significantly from 10 normal control donors. Thus our study suggests that BEP chemotherapy does not increase the risk of numerical chromosomal abnormalities in human sperm.

Adult↗
PubMed1997

"Becoming a mother'--developing a new theory of early motherhood.

This paper explains the methods used in a grounded theory analysis of the experience of 55 first-time mothers in Australia, presented in the first of this series of two papers. The categories identified in the research are realising, readiness, drained, aloneness, loss and working it out, encompassed in the core category becoming a mother. Specifically, this paper extends the analysis and explains the application of a 'paradigm model' and the identification of a Basic Social Process (BSP). The paper links the analysis to the literature on early motherhood from nursing, midwifery, feminist, and sociological research. A substantive theory is proposed to explain women's experience in becoming mothers that demonstrates how, when responsive to the needs of those researched, a grounded theory analysis can provide a framework for nursing and midwifery care.

Adaptation, Psychological↗
PubMed1997

Becoming a mother--an analysis of women's experience of early motherhood.

This paper presents the results of a qualitative study conducted by midwife researchers into women's experience of new motherhood. Data were collected using focus groups involving 55 first-time mothers and analysed using grounded theory method. The analysis produced six categories: 'realizing', 'unready', 'drained', 'aloneness', 'loss' and 'working it out'. The core category, 'becoming a mother', integrates all other categories and encapsulates the process of change experienced by women. Also explained are factors mediating the often distressing experience of becoming a mother. The analysis provides a conceptualization of early motherhood enabling the development of strategies for midwives, nurses and other helping women negotiate this challenge.

Adaptation, Psychological↗
PubMed1997

Analysis of human sperm karyotypes in testicular cancer patients before and after chemotherapy.

Sperm karyotype analysis was performed on testicular cancer patients before and after treatment with BEP (bleomycin, etoposide, and cisplatin). A total of 788 sperm chromosome complements was studied, 236 before chemotherapy (CT) and 552 post-CT. There was no significant difference in the total frequency of sperm chromosomal abnormalities pre-CT (10.2%) compared to post-CT (10.7%). Similarly, there were no significant differences in the frequencies of numerical abnormalities (2.5% pre-CT vs. 2.4% post-CT) or structural abnormalities (6.4% pre-CT vs. 7.4% post-CT). The percentage of X-bearing sperm was also not significantly different before (46.3%) and after CT (50.1%). The results in cancer patients were not significantly different from those in control donors. This study corroborates results from our previous analysis of these same men using multicolor fluorescence in situ hybridization for assessment of aneuploidy for chromosomes 1, 12, X, Y, and XY. Together, these two studies suggest that the sperm of men receiving BEP chemotherapy are not at increased risk of chromosomal abnormalities two or more years after treatment.

Adult↗
PubMed1996

Maternal country of origin and infant birthplace: implications for birth-weight.

This study investigated the effect of mother's country of origin and baby's birthplace on infant birth-weight. The mean birth-weights of full-term babies born of well immigrant women from 5 countries were compared with those of women of Anglo-Australian origin confined at the same hospital. Data were collected from medical records at Canterbury hospital for 1,274 women confined between 1989 and 1992 and 2,524 of their babies. Multiple regression analysis showed that infants born in Australia to women from Vietnam and Korea were significantly heavier than infants born to these women in their country of origin. Babies born to women from Vietnam were significantly lighter than babies born to Anglo-Australian controls.

Birth Weight↗
PubMed1996

Men's experiences during their partner's first pregnancy: a grounded theory analysis.

This paper reports on research conducted with 53 men who were attending antenatal classes with their partners who were pregnant for the first time. The men discussed their experience of pregnancy in focus groups that were run by male midwives who were also fathers. A grounded theory analysis of the men's discussions generated the categories of anxiety, ambivalence, adjustment, separation and need to know. There were two core categories, confusion, which was strongly expressed and development which was manifest in a minority of men. A descriptive narrative demonstrated that most first time fathers were confused as their relationship with their partner changed and that their roles in relation to the baby and other people were unclear. The men's sense of self was threatened and they responded negatively to the challenges they experienced and felt distanced from their partners. The findings have implications for clinical and educational services as they show that most men were alienated by the manner in which information was presented. The men also felt that services focused on their partner's labour and the birth of the child and neglected their greatest concerns, that is their changing identity, their relationships and their future role as fathers.

Adolescent↗
PubMed1996

Predictors of brief smoking intervention in a midwifery setting.

The aims of this study were: to assess current practice in smoking cessation interventions by midwives and to examine the relationship between the use of smoking intervention, practitioner characteristics and organizational factors. A mail-out survey was sent to a random sample of 500 midwives. The response rate was 85% (n = 425). The results indicated that most midwives used minimal interventions (advice and education) for at least some of their clients. However, the more skilled and more time-intensive forms of intervention such as counselling about methods to quit, negotiating a quit date and follow-up were infrequently utilized. Moreover, participants estimated that half their smoking clients were not offered any advice about smoking. Organizational factors such as: hospital policy for smoking intervention, type of hospital, size of hospital, cohesion of staff and work pressure predicted the use of smoking interventions. Self-reported ability to intervene for smoking and the level of assessment undertaken were practitioner characteristics which predicted the use of smoking interventions. The barriers that inhibit the use of smoking intervention by midwives are discussed and methods for change canvassed.

Adult↗
PubMed1994

Analysis of sperm chromosome complements from a man heterozygous for a pericentric inversion of chromosome 1.

Human sperm chromosomes were studied in a man heterozygous for a pericentric inversion of chromosome (1)(p31q12). Q-banded pronuclear chromosomes were analyzed after in vitro penetration of golden hamster oocytes. A total of 159 sperm were examined: 54% bearing the inverted chromosome 1 and 46% the normal chromosome 1. These frequencies are not significantly different from the theoretical 1:1 ratio. There were no recombinant sperm with duplications or deficiencies, suggesting that a pairing loop failed to form or that crossing-over was suppressed. The frequency of abnormalities unrelated to the inversion was 5% for numerical, 8.8% for structural, 2.5% for numerical and structural, values not significantly different from control donors studied in our lab. The frequencies of X- and Y-bearing sperm were 46% and 54%, respectively, not significantly different from the expected value of 50%. This is the fifth pericentric inversion studied by human sperm chromosome analysis; recombinant chromosomes have been observed in two of the five cases. Some of the factors associated with an increased risk of recombinant sperm appear to be inversion size greater than 30% of the chromosome and chromosome breakpoints in G-light bands.

Adult↗
PubMed1992

A comparison of the frequency and type of chromosomal abnormalities in human sperm after different sperm capacitation conditions.

Human sperm karyotypes can be prepared after fusion of human sperm with Golden hamster oocytes. Most laboratories use one of two methods of sperm capacitation: incubation of freshly-ejaculated sperm in Biggers, Whitten, and Whittingham (BWW) medium for 5-7 h at 37 degrees C or sperm storage in (N-tris [hydroxymethyl]methyl-2-aminoethanesulfonic acid; 2-([2-hydroxy-1,1-bis(hydroxymethyl)ethyl]amino)ethanesulfonic acid) (TES)-Tris yolk buffer (TYB) for 1-3 days at 4 degrees C. Since there have been conflicting reports as to whether there is a difference in the frequency of structural chromosomal abnormalities between BWW capacitation and storage in TYB for 2 days, we analyzed a larger number of karyotypes (8974) from 136 donors to determine if there was any difference in the frequency or type of chromosomal abnormalities in sperm treated by fresh BWW capacitation, storage in TYB for 1 day (TYB-1), or storage in TYB for 2 days (TYB-2). There was no difference in the frequency of numerical chromosomal abnormalities or sex ratio in any of the three treatment groups. However, there was a significantly increased frequency of structural chromosomal abnormalities after storage in TYB-1 and TYB-2. There was no difference in the frequency or type of structural chromosomal abnormalities after sperm storage in TYB-1 compared to TYB-2.

Adult↗