The diabetes-fracture association in women with type 1 and type 2 diabetes is partially mediated by falls: a 15-year longitudinal study.

This study evaluated mediators of fracture risk in postmenopausal women with type 1 (T1D) and type 2 diabetes (T2D), over a 15-year follow-up period. This study provides evidence that the increased fracture risk in women with T1D or T2D is partially explained by falls. Furthermore, a shorter reproductive lifespan in women with T1D contributes modestly to fracture risk in this cohort. PURPOSE: Skeletal fragility is associated with diabetes mellitus, while limited estrogen exposure during the reproductive years also predisposes to lower bone mass and higher fracture risk. We aimed to determine osteoporosis diagnosis, fall and fracture rates in women with type 1 (T1D) and type 2 (T2D) diabetes mellitus, and explore mediators of the diabetes-fracture relationship. METHODS: Prospective observational data drawn from the Australian Longitudinal Study in Women's Health (ALSWH) from 1996 to 2010. Women were randomly selected from the national health insurance database. Standardized data collection occurred at six survey time points, with main outcome measures being self-reported osteoporosis, incident fracture, falls, and reproductive lifespan. Mediation analyses were performed to elucidate relevant intermediaries in the diabetes-fracture relationship. RESULTS: Exactly 11,313 women were included at baseline (T1D, n = 107; T2D, n = 333; controls, n = 10,873). A total of 885 new cases of osteoporosis and 1099 incident fractures were reported over 15 years. Women with T1D or T2D reported more falls and fall-related injuries; additionally, women with T1D had a shorter reproductive lifespan. While fracture risk was increased in women with diabetes (T1D: OR 2.28, 95% CI 1.53-3.40; T2D: OR 2.40, 95% CI 1.90-3.03), compared with controls, adjustment for falls attenuated the risk of fracture by 10% and 6% in T1D and T2D, respectively. In women with T1D, reproductive lifespan modestly attenuated fracture risk by 4%. CONCLUSION: Women with T1D and T2D have an increased risk of fracture, which may be partially explained by increased falls, and to a lesser extent by shorter reproductive lifespan, in T1D.

Increased mortality and non-cancer morbidity risk may be associated with early menopause and varies with aetiology: An exploratory population-based study using data-linkage.

OBJECTIVE: Iatrogenic early menopause (EM), that is, menopause before the age of 45 years due to surgery or chemotherapy or radiotherapy, is associated with negative health impacts. However, it is unclear how these vary according to the cause of EM. We investigated mortality and non-cancer morbidity in women with iatrogenic EM of different aetiologies. STUDY DESIGN: Population-based retrospective cohort study with 36-year follow-up using data-linkage with the Western Australia hospital morbidity database, cancer, birth and death registries, the midwives notification system and the mental health information system. The sample comprised women aged 20-44 years at index date with iatrogenic EM associated with breast or gynaecological cancer (n = 607), or benign bilateral oophorectomy (n = 414), and age-matched female controls (n = 16,998). Index date (breast, ovarian or uterine cancer diagnosis or oophorectomy procedure) ranged from 1982 to 1997, with follow-up until 2018. MAIN OUTCOME MEASURES: Mortality and hospitalisation for circulatory disorders, endocrine, psychological, respiratory, musculoskeletal and gastrointestinal morbidities. RESULTS: Significant differences in mortality were observed (% dead by follow-up: cancer, 53.0; oophorectomy, 10.9; and controls, 3.5; p < 0.001). Incidence rate ratios (IRRs) were increased for circulatory (1.23, 95 % CI 1.07-1.42) and endocrine disorders (1.31, 95%CI 1.08-1.56) and hip fracture (3.90, 95 % CI 1.83-7.40) in cancer survivors, compared with controls. IRRs for circulatory (0.62, 95 % CI 0.53-0.72) and endocrine disorders (0.62, 95 % CI 0.38-0.97) were reduced in the oophorectomy group, but were increased for psychological (8.53, 95 % CI 7.29-9.94) and gastrointestinal morbidities (1.43, 95%CI 1.21-1.67) compared with controls. CONCLUSION: Cancer-related or benign iatrogenic EM may be associated with increased mortality and morbidity, which vary with the cause of EM.

Methylprednisolone applied directly to the round window reduces dizziness after cochlear implantation: a randomized clinical trial.

This prospective, double-blind controlled, randomized clinical trial of 43 adults showed that topical methylprednisolone applied to the round window during cochlear implantation was effective in protecting inner ear function. Postoperative vestibular disturbance was significantly lower in the steroid group (5%) than the control group (29%). Electrode impedances from the middle portion of the electrode array (electrodes 10-13) were significantly reduced in steroid-treated recipients compared to controls. Hearing and vestibular function analyses were under-powered to detect any drug changes due to limited participant data.

Recruiting for research on sensitive topics in schools: an experience with Vaxcards, a collectable vaccine card game.

Undertaking recruitment for research in schools is an effective way to recruit young people for research participation but it is not without its challenges. Gaining access and coordinating many levels of different organisations and stakeholders whose cooperation and approval are crucial all add time and sometimes logistical challenges for the research team. In addition, recruiting around sensitive research topics can elicit additional barriers to successful research. The research team aimed to conduct a pragmatic cluster randomised controlled trial involving schools in a local government region in Victoria, Australia, to assess the effect of a vaccination-based educational card game called "Vaxcards" on vaccine consent returns. Schools were contacted via phone and email to determine which staff member would best be a contact point for a face-to-face meeting to discuss the methods and purpose of the study. Email follow-ups were scheduled to follow up non-responsive schools and consent forms. The minimum required sample size was 13. Of 31 eligible schools, 13 were recruited. The research team encountered several unanticipated challenges before achieving the recruitment target. The most common reasons for non-participation were being too busy with other commitments, concerns regarding the topic of vaccination being too sensitive, and concerns that key stakeholders in the school would not approve of the research topic of vaccination. One school required a review by a private research ethics board that rejected the study. Significant hesitancy and misinformation about vaccine science was observed that affected engagement with a small number of schools. This paper highlights the challenges of recruiting schools in the context of public anxieties about vaccines and has several important learning lessons for successful recruitment about sensitive topics. This includes navigating approval processes for research in schools, the importance of local champions, dealing with misinformation and the importance of strong relationships and organisational trust. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry (ANZCTR) ACTRN12618001753246 . Prospectively registered on 25 October 2018 8:24:21 AM.

Vestibular rehabilitation in individuals with inner-ear dysfunction: a pilot study.

A randomised control prospective study was carried out examining patient outcomes after performing a 10-week vestibular home exercise programme. Thirty-two adults with vestibular dysfunction who reported vestibular symptoms negatively affecting daily life were enrolled. Test subjects were provided with an individualised vestibular rehabilitation programme designed by a physiotherapist. Control subjects received a set of strength and endurance exercises only. All subjects performed their exercises 3 times a day for 10 weeks. Subjective and objective patient measures were collected at 0, 6, 10 and 26 weeks. Results showed that both groups improved after beginning exercise, and that test subjects significantly benefited compared to the controls. These benefits were long term and measurable 6 months later. This study provides evidence that individualised vestibular exercises promote better outcomes for patients with vestibular dysfunction.

The effects of state of alertness on the vestibulo-ocular reflex in normal subjects using the vestibular rotational chair.

Twenty-four subjects with normal vestibular function underwent horizontal sinusoidal harmonic acceleration (SHA) and step-velocity rotational chair assessment twice, first in a heightened state-of-alertness, and second, in a low state-of-alertness. The effects of alertness on vestibulo-ocular reflex gain and time-constant (Tc) were then examined. Although the negative effect on SHA gain had previously been widely reported, the effect on the Tc had not been studied. It was found that SHA gain and step-velocity Tc were significantly and artificially reduced with decreased alertness. On average, SHA gain was reduced by 0.1 at each test frequency and the Tc was reduced from 15.8 seconds to 10.5 seconds. Whilst on average, step-velocity initial gain was only a little affected reducing from 0.53 to 0.49. This very small difference of 0.04 was significant, however, it suggested that this measurement is less affected by patient alertness than SHA gain and Tc.

A comparison of the monothermal and bithermal caloric tests.

This study considered whether the monothermal (MT) caloric test could predict the normality of the full conventional bithermal (BT) caloric test, and therefore be an alternative to full caloric investigation. This would have the advantages of reducing test time and patient discomfort as only two caloric tests would be needed instead of four. 744 BT caloric investigations were examined, and the unilateral weakness and directional preponderance calculated for the BT and the MT stimuli. By defining the BT results as the standard, the false-positive and false-negative results of the MT test were derived. Overall using very strict MT difference criteria of less than 5% and no spontaneous nystagmus, false-negative rates for the cool MT were very low (< 1%) and better than the warm MT (< 7.1%) suggesting that the cool MT was a reliable screen test. However, unacceptably high false-positive rates were produced reflecting more than 3/4 of normal BT results failing the MT criterion. This unacceptable false-positive rate decided against implementing the MT test at our facility. The results of this study however have guided the use of the cool air-stimulus first during BT testing and, when completion of the BT is not possible or inadvisable, satisfying the stringent MT criterion confidently indicates with a probability of > 99% the absence of an abnormal BT result.

The prognostic value of speech recognition scores at diagnosis of vestibular schwannoma.

We aimed to assess whether speech recognition scores (SRS) are predictive of outcomes in patients with small vestibular schwannoma (VS) undergoing observation. Ninety-five patients with VS whose initial management was observation with serial imaging were retrospectively analysed. Patients were divided into groups according to their average hearing level and SRS at diagnosis. About 60% of patients had good initial SRS (GIS) and 40% had poor initial SRS (PIS). Mean follow-up was 44 months, during which time data were collected regarding hearing level, tumour growth and the eventual management option (continued or failed observation). Observation was discontinued by 24% (23/95) of patients. GIS-patients were more likely to maintain stable hearing than those with PIS (p<0.05). Hearing was stable in 73% (64/87) of patients. These findings indicate that patients with PIS are more vulnerable to progressive hearing loss than those with GIS. Observation may be a suitable management option for all patients with small VS, particularly those with GIS.