Radiogenomic analysis of primary breast cancer reveals [18F]-fluorodeoxglucose dynamic flux-constants are positively associated with immune pathways and outperform static uptake measures in associating with glucose metabolism.

BACKGROUND: PET imaging of 18F-fluorodeoxygucose (FDG) is used widely for tumour staging and assessment of treatment response, but the biology associated with FDG uptake is still not fully elucidated. We therefore carried out gene set enrichment analyses (GSEA) of RNA sequencing data to find KEGG pathways associated with FDG uptake in primary breast cancers. METHODS: Pre-treatment data were analysed from a window-of-opportunity study in which 30 patients underwent static and dynamic FDG-PET and tumour biopsy. Kinetic models were fitted to dynamic images, and GSEA was performed for enrichment scores reflecting Pearson and Spearman coefficients of correlations between gene expression and imaging. RESULTS: A total of 38 pathways were associated with kinetic model flux-constants or static measures of FDG uptake, all positively. The associated pathways included glycolysis/gluconeogenesis ('GLYC-GLUC') which mediates FDG uptake and was associated with model flux-constants but not with static uptake measures, and 28 pathways related to immune-response or inflammation. More pathways, 32, were associated with the flux-constant K of the simple Patlak model than with any other imaging index. Numbers of pathways categorised as being associated with individual micro-parameters of the kinetic models were substantially fewer than numbers associated with flux-constants, and lay around levels expected by chance. CONCLUSIONS: In pre-treatment images GLYC-GLUC was associated with FDG kinetic flux-constants including Patlak K, but not with static uptake measures. Immune-related pathways were associated with flux-constants and static uptake. Patlak K was associated with more pathways than were the flux-constants of more complex kinetic models. On the basis of these results Patlak analysis of dynamic FDG-PET scans is advantageous, compared to other kinetic analyses or static imaging, in studies seeking to infer tumour-to-tumour differences in biology from differences in imaging. Trial registration NCT01266486, December 24th 2010.

Prevalence of burnout, depression, anxiety and stress in Australian midwives: a cross-sectional survey.

BACKGROUND: The health and wellbeing of midwives are important considerations for workforce retention and quality care. The occurrence and relationships among mental health conditions such as burnout and depression have received little attention. We investigated the prevalence of burnout, depression, anxiety and stress in Australian midwives. METHODS: An online survey was conducted in September 2014. Participants were recruited through the Australian College of Midwives and professional networks. The survey sought personal and professional details. Standard measures included the Copenhagen Burnout Inventory (CBI) (Personal, Work and Client subscales), and Depression, Anxiety, and Stress Scale (DASS). The sample was collapsed into two groups according to DASS clinical cut-offs (normal/mild versus moderate/severe/extreme). Effect size statistics were calculated and judged according to Cohen's guidelines. RESULTS: One thousand thirty-seven surveys were received. Respondents were predominantly female (98%), with an average age of 46.43 years, and 16.51 years of practice. Using a CBI subscale cut-off score of 50 and above (moderate and higher), 64.9% (n = 643) reported personal burnout; 43.8% (n = 428) reported work-related burnout; and 10.4% (n = 102) reported client-related burnout. All burnout subscales were significantly correlated with depression, anxiety and stress, particularly personal and work-related burnout with Spearman's rho correlations ranging from .51 to .63 (p < .001). Around 20% of midwives reported moderate/ severe/ extreme levels of depression (17.3%); anxiety (20.4%), and stress (22.1%) symptoms. Mann-Whitney U tests revealed significant differences between groups with depression (r = .43), anxiety (r = .41) and stress (r = 48) having a medium size effect on burnout. CONCLUSION: Prevalence of personal and work-related burnout in Australian midwives was high. The physical and psychological exhaustion associated with the different types of burnout were reflected in symptoms of depression, anxiety and stress symptoms. Further research is needed to support the personal well-being of midwives and minimize workplace burnout by developing short and long term strategies.

A cost effectiveness analysis of midwife psycho-education for fearful pregnant women - a health system perspective for the antenatal period.

BACKGROUND: Psycho-education can reduce childbirth fear and caesarean section numbers. This study determines the cost-effectiveness of a midwife-led psycho-education intervention for women fearful of birth. METHOD: One thousand four hundred ten pregnant women in south-east Queensland, Australia were screened for childbirth fear (W-DEQ A ≥ 66). Women with high scores (n = 339) were randomised to the BELIEF Study (Birth Emotions and Looking to Improve Expectant Fear) to receive psycho-education (n = 170) at 24 and 34 weeks of pregnancy or to the control group (n = 169). Women in both groups were surveyed 6 weeks postpartum with total cost for health service use during pregnancy calculated. Logistic regression models assessed the odds ratio of having vaginal birth or caesarean section in the study groups. RESULT: Of 339 women randomised, 184 (54%) women returned data at 6 weeks postpartum (Intervention Group n = 91; Control Group n = 93). Women receiving psycho-education had a higher likelihood of vaginal birth compared to controls (n = 60, 66% vs. n = 54, 58%; OR 2.34). Mean 'treatment' cost for women receiving psycho-education was AUS$72. Mean cost for health services excluding the cost of psycho-education, was less in the intervention group (AUS$1193 vs. AUS$1236), but not significant (p = 0.78). For every five women who received midwife counselling, one caesarean section was averted. The incremental healthcare cost to prevent one caesarean section using this intervention was AUS$145. CONCLUSION: Costs of delivering midwife psycho-education to women with childbirth fear during pregnancy are offset by improved vaginal birth rates and reduction in caesarean section numbers. TRIAL REGISTRATION: Australian New Zealand Controlled Trials Registry ACTRN12612000526875 , 17th May 2012 (retrospectively registered one week after enrolment of first participant).

Assessment of the dimensionality of the Wijma delivery expectancy/experience questionnaire using factor analysis and Rasch analysis.

BACKGROUND: Fear of childbirth has negative consequences for a woman's physical and emotional wellbeing. The most commonly used measurement tool for childbirth fear is the Wijma Delivery Expectancy Questionnaire (WDEQ-A). Although originally conceptualized as unidimensional, subsequent investigations have suggested it is multidimensional. This study aimed to undertake a detailed psychometric assessment of the WDEQ-A; exploring the dimensionality and identifying possible subscales that may have clinical and research utility. METHODS: WDEQ-A was administered to a sample of 1410 Australian women in mid-pregnancy. The dimensionality of WDEQ-A was explored using exploratory (EFA) and confirmatory factor analysis (CFA), and Rasch analysis. RESULTS: EFA identified a four factor solution. CFA failed to support the unidimensional structure of the original WDEQ-A, but confirmed the four factor solution identified by EFA. Rasch analysis was used to refine the four subscales (Negative emotions: five items; Lack of positive emotions: five items; Social isolation: four items; Moment of birth: three items). Each WDEQ-A Revised subscale showed good fit to the Rasch model and adequate internal consistency reliability. The correlation between Negative emotions and Lack of positive emotions was strong, however Moment of birth and Social isolation showed much lower intercorrelations, suggesting they should not be added to create a total score. CONCLUSION: This study supports the findings of other investigations that suggest the WDEQ-A is multidimensional and should not be used in its original form. The WDEQ-A Revised may provide researchers with a more refined, psychometrically sound tool to explore the differential impact of aspects of childbirth fear.

Health services utilization of women following a traumatic birth.

This cohort study compared 262 women with high childbirth distress to 138 non-distressed women. At 12 months, high distress women had lower health-related quality of life compared to non-distressed women (EuroQol five-dimensional (EQ-5D) scale 0.90 vs. 0.93, p = 0.008), more visits to general practitioners (3.5 vs. 2.6, p = 0.002) and utilized more additional services (e.g. maternal health clinics), with no differences for infants. Childbirth distress has lasting adverse health effects for mothers and increases health-care utilization.

PRIME: impact of previous mental health problems on health-related quality of life in women with childbirth trauma.

We investigated the impact of pre-existing mental ill health on postpartum maternal outcomes. Women reporting childbirth trauma received counselling (Promoting Resilience in Mothers' Emotions; n = 137) or parenting support (n = 125) at birth and 6 weeks. The EuroQol Five dimensional (EQ-5D)-measured health-related quality of life at 6 weeks, 6 and 12 months. At 12 months, EQ-5D was better for women without mental health problems receiving PRIME (mean difference (MD) 0.06; 95 % confidence interval (CI) 0.02 to 0.10) or parenting support (MD 0.08; 95 % CI 0.01 to 0.14). Pre-existing mental health conditions influence quality of life in women with childbirth trauma.

Taking the reins: A grounded theory study of women's experiences of negotiating water immersion for labour and birth after a previous caesarean section.

BACKGROUND: Women seeking a vaginal birth after a caesarean section (VBAC) frequently want to keep their subsequent labour and birth free from intervention. Water immersion (WI) during labour is potentially an effective tool for women having a VBAC for its natural pain-relieving properties. However, negotiating access to WI can be difficult, especially in the context of VBAC. AIM: To explore women's experiences of negotiating WI for labour and birth in the context of VBAC. METHODOLOGY: This Grounded Theory study followed Strauss and Corbin's framework and analytic process. Twenty-five women planning or using WI for their VBAC labour or birth were recruited from two midwifery practices and a social media group across Australia. Participants were interviewed during pregnancy and/or postnatally. FINDINGS: 'Taking the reins', the core category explaining the women's experiences of assuming authority over their birth, comprised five categories: 'Robbed of my previous birth experience'; 'My eyes were opened'; 'Water is my tool for a successful VBAC'; 'Actioning my choices and rights for WI', and 'Empowered to take back control'. 'Wanting natural and normal' was the driving force behind women's desire to birth vaginally. Two mediating factors: Having someone in your corner and Rules for birth facilitated or hindered their birth choices, respectively. CONCLUSION: The women became active participants in their healthcare by seeking information and options to keep their birth experience natural and normal. Support from other women and advocacy in the form of continuity of midwifery care was crucial in successfully negotiating WI for their VBAC when navigating the complex health system.

Nutlin-3, the small-molecule inhibitor of MDM2, promotes senescence and radiosensitises laryngeal carcinoma cells harbouring wild-type p53.

BACKGROUND: Primary radiotherapy (RT) is a mainstay of treatment for laryngeal squamous cell carcinoma (LSCC). Although the cure rates for early (T1) vocal cord tumours are high, RT proves ineffective in up to a third of T3 carcinomas. Moreover, RT is associated with debilitating early- and late-treatment-related toxicity, thus finding means to de-escalate therapy, while retaining/augmenting therapeutic effectiveness, is highly desirable. p53 is a key mediator of radiation responses; we therefore investigated whether Nutlin-3, a small-molecule inhibitor of MDM2 (mouse double minute 2; an essential negative regulator of p53), might radiosensitise LSCC cells. METHODS: We performed clonogenic assays to measure radiosensitivity in a panel of LSCC cell lines (for which we determined p53 mutational status) in the presence and absence of Nutlin-3. RESULTS: LSCC cells harbouring wild-type p53 were significantly radiosensitised by Nutlin-3 (P<0.0001; log-rank scale), and displayed increased cell cycle arrest and significantly increased senescence (P<0.001) in the absence of increased apoptosis; thus, our data suggest that senescence may mediate this increased radiosensitivity. CONCLUSION: This is the first study showing Nutlin-3 as an effective radiosensitiser in LSCC cells that retain wild-type p53. The clinical application of Nutlin-3 might improve local recurrence rates or allow treatment de-escalation in these patients.

Reduced Fractionation in Lung Cancer Patients Treated with Curative-intent Radiotherapy during the COVID-19 Pandemic.

Patients treated with curative-intent lung radiotherapy are in the group at highest risk of severe complications and death from COVID-19. There is therefore an urgent need to reduce the risks associated with multiple hospital visits and their anti-cancer treatment. One recommendation is to consider alternative dose-fractionation schedules or radiotherapy techniques. This would also increase radiotherapy service capacity for operable patients with stage I-III lung cancer, who might be unable to have surgery during the pandemic. Here we identify reduced-fractionation for curative-intent radiotherapy regimes in lung cancer, from a literature search carried out between 20/03/2020 and 30/03/2020 as well as published and unpublished audits of hypofractionated regimes from UK centres. Evidence, practical considerations and limitations are discussed for early-stage NSCLC, stage III NSCLC, early-stage and locally advanced SCLC. We recommend discussion of this guidance document with other specialist lung MDT members to disseminate the potential changes to radiotherapy practices that could be made to reduce pressure on other departments such as thoracic surgery. It is also a crucial part of the consent process to ensure that the risks and benefits of undergoing cancer treatment during the COVID-19 pandemic and the uncertainties surrounding toxicity from reduced fractionation have been adequately discussed with patients. Furthermore, centres should document all deviations from standard protocols, and we urge all colleagues, where possible, to join national/international data collection initiatives (such as COVID-RT Lung) aimed at recording the impact of the COVID-19 pandemic on lung cancer treatment and outcomes.

Panax ginseng has no effect on indices of glucose regulation following acute or chronic ingestion in healthy volunteers.

In the absence of effective pharmacotherapy for diabetes there has been an increase in the use of, and research into, alternative treatment strategies. These include exercise, dietary interventions and the use of supplements including extracts of ginseng. Two separate, placebo-controlled, double-blind, cross-over studies investigating the effects of chronic ingestion of Panax ginseng (study 1 used G115, study 2 used Cheong Kwan Jang) on glycated Hb (HbA1c; study 1, n 18; study 2, n 11), fasting plasma insulin (study 1, n 17; study 2, n 12), fasting plasma glucose and postprandial response (following breakfast) (study 1, n 23; study 2, n 14) in healthy volunteers are reported. In both studies it was found that Panax ginseng had no effect on any gluco-regulatory parameter investigated. These results are not consistent with those reported for a diabetic sample (albeit using slightly different outcomes). These results would suggest that chronic use of Panax ginseng by non-diabetic individuals will have little long-term effect on glucose regulation. The benefits to glucose regulation associated with long-term ginseng use may only be present in populations with compromised glucose control; however, further research is needed to confirm such a speculation.

Escalation and intensification of radiotherapy for stage III non-small cell lung cancer: opportunities for treatment improvement.

In this overview we review and model how radiotherapy tumour control and complication rates vary with dose, fractionation, schedule duration, irradiated volume and use of chemotherapy for stage III non-small cell lung cancer (NSCLC), and use the modelling to study the effectiveness of different NSCLC dose-escalation approaches being developed in the UK. Data have been collated for pneumonitis, lung fibrosis, early and late oesophagitis, cord and cardiac complications, and local progression-free survival at 30 months. Dependences of the various end points on treatment-related factors are catalogued and analysed using the linear-quadratic incomplete repair model to account for dose and fractionation effects, making linear corrections for differences in schedule duration, and loosely characterising volume effects using parallel- and series-type concepts. Tolerance limits are calculated for the different end points and distilled into ranges of prescribed dose likely to be tolerable when delivered in 2.5 and 4 week radiation and 6 week chemoirradiation schedules using conformal techniques. Worthwhile ( approximately 20%) gains in 30 month local progression-free survival should be achievable at safely deliverable levels of dose escalation. The analysis suggests that longer schedules may be more beneficial than shorter ones, but this finding is governed by the relative rates of tumour and oesophageal accelerated proliferation, which are quite imprecisely known. Consequently escalated 2.5, 4 and 6 week schedules are being developed; each should lead to useful improvements in local control but it is not yet known which schedule will be most effective.

Trauma and fear in Australian midwives.

BACKGROUND: Relatively little is known about the extent of trauma and birth-related fear in midwives and how this might affect practice. AIM: (1) Determine prevalence of birth related trauma and fear in midwives and associations with midwives' confidence to advise women during pregnancy of their birth options and to provide care in labour. (2) Describe midwives' experiences of birth related trauma and/or fear. METHOD: A mixed methods design. A convenience sample of midwives (n=249) completed an anonymous online survey. Descriptive and inferential statistics were used to analyse the quantitative data. Latent content analysis was used to extrapolate meaning from the 170 midwives who wrote about their experiences of personal and/or professional trauma. RESULTS: The majority of midwives (93.6%) reported professional (n=199, 85.4%) and/or personal (n=97, 41.6%) traumatic birth experiences. Eight percent (n=20) reported being highly fearful of birth. Trauma was not associated with practice concerns but fear was. Midwives categorised as having 'high fear' reported more practice concerns (Med 23.5, n=20) than midwives with 'low fear' (Med 8, n=212) (U=1396, z=-3.79, p<0.001, r=0.24). Reasons for personal trauma included experiencing assault, intervention and stillbirth. Professional trauma related to both witnessing and experiencing disrespectful care and subsequently feeling complicit in the provision of poor care. Feeling unsupported in the workplace and fearing litigation intensified trauma. CONCLUSION: High fear was associated with lower confidence to support childbearing women. Fear and trauma in midwives warrants further investigation to better understand the impact on professional practice.

Australian private midwives with hospital visiting rights in Queensland: Structures and processes impacting clinical outcomes.

BACKGROUND: Reporting the outcomes for women and newborns accessing private midwives with visiting rights in Australia is important, especially since this data cannot currently be disaggregated from routinely collected perinatal data. AIM: 1) Evaluate the outcomes of women and newborns cared for by midwives with visiting access at one Queensland facility and 2) explore private midwives views about the structures and processes contributing to clinical outcomes. METHODS: Mixed methods. An audit of the 'all risk' 529 women receiving private midwifery care. Data were compared with national core maternity variables using Chi square statistics. Telephone interviews were conducted with six private midwives and data analysed using thematic analysis. FINDINGS: Compared to national data, women with a private midwife were significantly more likely to be having a first baby (49.5% vs 43.6% p=0.007), to commence labour spontaneously (84.7% vs 52.7%, p<0.001), experience a spontaneous vaginal birth (79% vs 54%, p<0.001) and not require pharmacological pain relief (52.9% vs 23.1%, p<0.001). The caesarean section rate was significantly lower than the national rate (13% vs 32.8%, p<0.001). In addition fewer babies required admission to the Newborn Care Unit (5.1% vs 16%, p<0.001). Midwives were proud of their achievements. Continuity of care was considered fundamental to achieving quality outcomes. Midwives valued the governance processes embedded around the model. CONCLUSIONS: Private midwives with access to the public system is safe. Ensuring national data collection accurately captures outcomes relative to model of care in both the public and private sector should be prioritised.

The Impact of Cardiac Radiation Dosimetry on Survival After Radiation Therapy for Non-Small Cell Lung Cancer.

PURPOSE: The heart receives high radiation doses during radiation therapy of advanced-stage lung cancer. We have explored associations between overall survival, cardiac radiation doses, and electrocardiographic (ECG) changes in patients treated in IDEAL-CRT, a trial of isotoxically escalated concurrent chemoradiation delivering tumor doses of 63 to 73 Gy. METHODS AND MATERIALS: Dosimetric and survival data were analyzed for 78 patients. The whole heart, pericardium, AV node, and walls of left and right atria (LA/RA-Wall) and ventricles (LV/RV-Wall) were outlined on radiation therapy planning scans, and differential dose-volume histograms (dDVHs) were calculated. For each structure, dDVHs were approximated using the average dDVH and the 10 highest-ranked structure-specific principal components (PCs). ECGs at baseline and 6 months after radiation therapy were analyzed for 53 patients, dichotomizing patients according to presence or absence of "any ECG change" (conduction or ischemic/pericarditis-like change). All-cause death rate (DR) was analyzed from the start of treatment using Cox regression. RESULTS: 38% of patients had ECG changes at 6 months. On univariable analysis, higher scores for LA-Wall-PC6, Heart-PC6, "any ECG change," and larger planning target volume (PTV) were significantly associated with higher DR (P=.003, .009, .029, and .037, respectively). Heart-PC6 and LA-Wall-PC6 represent larger volumes of whole heart and left atrial wall receiving 63 to 69 Gy. Cardiac doses ≥63 Gy were concentrated in the LA-Wall, and consequently Heart-PC6 was highly correlated with LA-Wall-PC6. "Any ECG change," LA-Wall-PC6 scores, and PTV size were retained in the multivariable model. CONCLUSIONS: We found associations between higher DR and conduction or ischemic/pericarditis-like changes on ECG at 6 months, and between higher DR and higher Heart-PC6 or LA-Wall-PC6 scores, which are closely related to heart or left atrial wall volumes receiving 63 to 69 Gy in this small cohort of patients.

The birth bed: A qualitative study on the views of midwives regarding the use of the bed in the birth space.

BACKGROUND: There is a growing body of evidence to show that the birth environment can influence women's experiences of labour and birth as well as midwifery practice. A common feature of the modern birth space is the bed. Knowledge about how the use of the bed shapes clinicians' perceptions and attitudes is limited. AIM: The aim of this paper is to describe midwives' perceptions of the birth bed. METHOD: Qualitative descriptive design. Fourteen midwives from one Queensland maternity unit participated in digitally recorded and transcribed interviews. Thematic analysis was used to analyse the data set. FINDINGS: Four themes were identified. The first, described beliefs that using the bed formed part of women's childbirth expectations. A second theme, captured midwives' perceptions that the bed was also an object required to safely undertake their work. The third theme described how others commonly worked to ensure the woman stayed off the bed. Lastly, there was evidence that whilst wanting to avoid the use of the bed, some were reluctant, fearing potential reprimand. CONCLUSION: The themes highlight differences in how the midwives conceptualised the use of a bed within a birth space. While some avoided the use of the bed altogether others would only conceive of women moving off the bed if everything was 'normal'. How the bed was culturally constructed appeared to dictate clinical practice. Reflecting on the meaning of an object, such as the bed, is important if clinicians are to fully understand how the birth environment influences their practice and thus women's experiences of labour and birth.

Being a young midwifery student: A qualitative exploration.

BACKGROUND: undergraduate midwifery programmes offer opportunities for school leavers and young people (aged less than 21 years) to enter the profession. There is limited research exploring this age groups experience of their Bachelor of Midwifery programme. In order to retain these students we need to ensure that their experiences of undertaking a Bachelor of Midwifery program are positive and barriers and challenges are minimised. AIM: this study explored young midwifery students' experience of their Bachelor of Midwifery program. METHOD: a descriptive exploratory qualitative approach was used to explore the experiences of eleven students aged 20 years or less on enrolment. Data was collected using face-to-face or telephone-recorded interviews. Thematic analysis was used to analysis the data set. FINDINGS: three major themes described the young students' experiences. The first labelled 'The challenges of being young' presented a number of age related challenges including transport issues with on-call commitments as some students had not gained a driver's license. Students experienced some degree of prejudice relating to their age from their older student peers and some clinical staff during placements. 'Finding your way' was the second theme and described the strategies students used to build confidence and competence both in the university and clinical environment. The young students reported a strong commitment to the profession. They demonstrated high levels of connection with women and found the continuity of care experiences invaluable to their learning. The final theme 'Making the transition from teenager to midwife' demonstrated some unique insights into how studying to become a midwife impacted upon their personal and professional growth. CONCLUSION: the young students in this study encountered some unique issues related to their age. However as they progressed through the program they developed confidence in themselves and visualised themselves as having a long midwifery career. They were strongly motivated towards providing woman-centred maternity care and considered their continuity of care experiences fundamental to them developing a strong sense of themselves as midwives. Attracting and retaining young students is essential if the profession is to realise its goal of ensuring all women have access to a known midwife.

Women's experiences of having a Bachelor of Midwifery student provide continuity of care.

BACKGROUND: The Australian national midwifery education standards require students to complete a number of continuity of care (COC) experiences. There is increasing evidence outlining the value of this experience to the student, but there is limited research examining women's experiences of having a COC midwifery student. This study aimed to investigates the woman's experiences. METHODS: A retrospective descriptive cohort design was used. A paper-based survey was posted to all women cared for by a midwifery student in 2013 (n=698). Descriptive statistics were used to explore the proportion, mean score, standard deviation and range of the variables. Construct validity of the Satisfaction and Respect Scales was tested using exploratory factor analysis. Free text responses were analysed using latent content analysis. RESULT: One-third of women returned a completed survey (n=237/698, 34%). There was a significant positive correlation (p<0.05) between the number of AN/PN visits a midwifery student attended and women's levels of satisfaction. Women were very satisfied with having a student midwife provide continuity. The qualitative data provided additional insight demonstrating that most women had a positive relationship with the midwifery student that enhanced their childbearing experience. CONCLUSION: The women in this study valued continuity of midwifery care and were able to form meaningful relationships with their midwifery student. Programs leading to registration as a midwife should privilege continuity of care experiences. Not only does this benefit women but provides the future midwifery workforce with a clear understanding of models that best meet women's individual and the benefits of working in these models.

Young student's motivations to choose an undergraduate midwifery program.

BACKGROUND: Within the context of an ageing health workforce it is important to gain a greater understanding of the motivations of young people (aged less than 21 years) to choose a career in midwifery. AIM: To explore the reasons why young students decided to study midwifery and enrol in one Australian Bachelor of Midwifery program. METHOD: A descriptive exploratory qualitative design was used. Eleven midwifery students aged less than 21 years on enrollment participated in a semi-structured tape-recorded interview. The transcribed interviews were analysed using thematic analysis. FINDINGS: Direct and indirect exposure to positive constructions of childbirth as well as the midwives role fuelled young student's fascination with midwifery and drove their desire to enrol. While some young students entered midwifery studies as a result of their 'love of babies' others took a more pragmatic 'wait and see' approach about their career choice. Many young students however clearly distinguished midwifery from nursing demonstrating an intention to be a midwife rather than a nurse. This decision often took place within the context of opposition from within their family, school and social networks where the public discourse continued to reinforce nursing as the preferred pathway to midwifery. CONCLUSION: Creating opportunities for young people to be exposed to positive constructions of childbirth as well as midwifery role models may increase the number of young students entering midwifery. There is also a need for information to be provided to school careers officers to assist them to understand the distinction between midwifery and nursing.

Symptoms of tobacco withdrawal. A replication and extension.

Smokers (n = 315) who wished to quit were randomly assigned in a double-blind manner to groups using either nicotine or placebo gum. Self-reported and observed symptoms of tobacco withdrawal were collected before cessation and at follow-ups of 1 to 2 weeks, 1 month, and 6 months. Self-reported and/or observed anger, anxiety, craving, difficulty concentrating, hunger, impatience, and restlessness were the most prominent symptoms of tobacco withdrawal. These symptoms had returned to precessation levels by 1 month except increased weight, hunger, and craving continued for 6 months in many smokers. Nicotine gum decreased most symptoms, including craving and hunger but not weight. Abstinent smokers with more intense withdrawal were not more likely to relapse. Abstinent smokers who gained more weight were less likely to relapse.

Caffeine self-administration, withdrawal, and adverse effects among coffee drinkers.

Twenty-two coffee drinkers (three to seven cups per day) underwent repeated double-blind trials to test for caffeine self-administration, withdrawal, and adverse effects. Each trial consisted first of a randomized crossover period of 1 day of decaffeinated coffee and 1 day of caffeinated coffee (100 mg) to assess withdrawal and adverse effects of caffeine. Next, subjects were given 2 days of concurrent access to the two coffees. The relative use of the two coffees was used to assess caffeine self-administration. Reliable caffeine self-administration occurred in three of 10 subjects in study 1 and seven of 12 subjects in study 2. Withdrawal symptoms were headaches, drowsiness, and fatigue. The major adverse effect from self-administration was tremulousness. The occurrence of headaches on substitution of decaffeinated coffee prospectively predicted subsequent self-administration of caffeine. These results indicate that some coffee drinkers exhibit signs of a caffeine dependence, ie, they self-administer coffee for the effects of caffeine, have withdrawal symptoms on cessation, and experience adverse effects.