A high throughput instrument to measure mechanical losses in thin film coatings

Brownian thermal noise generated by mechanical losses in thin film coatings limits the sensitivity of gravitational wave detectors, as well as several high precision metrology experiments. Improving the sensitivity of the next generation of gravitational wave detectors will require optical coatings with significantly reduced mechanical losses. In this paper, we describe a system that we developed to measure the mechanical loss angle of thin film coatings deposited on fused silica substrates. The novelty of this system resides in the capability of parallel measurement of up to four samples and the ability to simultaneously probe all the resonant modes of each sample. This high throughput measurement system allows the exploration of a large number of deposition and material parameters, which can be tuned to achieve low loss coatings.

Molecular, clinical and neuropsychological study in 31 patients with Kabuki syndrome and KMT2D mutations

Kabuki syndrome (KS-OMIM 147920) is a rare developmental disease characterized by the association of multiple congenital anomalies and intellectual disability. This study aimed to investigate intellectual performance in children with KS and link the performance to several clinical features and molecular data. We recruited 31 children with KMT2D mutations who were 6 to 16 years old. They all completed the Weschler Intelligence Scale for Children, fourth edition. We calculated all indexes: the Full Scale Intellectual Quotient (FSIQ), Verbal Comprehension Index (VCI), Perceptive Reasoning Index (PRI), Processing Speed Index (PSI), and Working Memory Index (WMI). In addition, molecular data and several clinical symptoms were studied. FSIQ and VCI scores were 10 points lower for patients with a truncating mutation than other types of mutations. In addition, scores for FSIQ, VCI and PRI were lower for children with visual impairment than normal vision. We also identified a discrepancy in indexes characterized by high WMI and VCI and low PRI and PSI. We emphasize the importance of early identification and intensive care of visual disorders in patients with KS and recommend individual assessment of intellectual profile.

Clozapine induced diarrhea

Introduction

Clozapine (CZP) is the only antipsychotic approved for resistant schizophrenia 1. Due to its side effects, CZP is not the first therapeutic option in a psychotic episode. Its anticholinergic effects often cause constipation, however, diarrhea have also been described in literature.

Objectives

We describe a patient with two episodes of severe diarrhea after clozapine initiation, which lead to CZP discontinuation.

Aims

Discuss about the differential diagnosis of diarrhea in CZP patients and the needing of a further studies for clarify the more appropriate management in CZP induced diarrhea.

Methods

We present a case report of a 46 years man diagnosed with schizoaffective disorder who presented two episodes of severe diarrhea with fever, which forced his transfer to internal medicine and UCI after CZP initiation.

Results

At the first episode analytical, radiological and histological findings led to Crohn's disease diagnosis, which required budesonide and mesalazine treatment. In the second episode, the digestive team concluded that the episode was due to clozapine toxicity despite the controversial findings (clostridium toxin and Crohn's compatible biopsies)

Conclusions

Diarrhea caused by CZP has been controversial in the literature. However due to the severity of digestive episodes and the paucity of alternative treatments further studies for a better understanding of its physiopathology are warranted.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Polydipsia and intermittent hyponatremia

Introduction

Hyponatraemia occurs in 4% of schizophrenic patients. Dilutional hyponatraemia, due to inappropriate retention of water and excretion of sodium, occurs with different psychotropic medications and could lead to hippocampal dysfunction. This complication is usually asymptomatic but can cause severe problems, as lethargy and confusion, difficult to diagnose in mentally ill patients.

Objectives

To describe a case of a patient with psychotropic poli-therapy, admitted three times due to hyponatremia and the pharmacological changes that improved his condition.

Aims

To broadcast the intermittent hyponatraemia and polydipsia (PIP), a not rare condition, suffered by treated schizophrenic patients and discuss its physiopathology and treatment thorough a case report.

Methods

A 56-year schizophrenic male was admitted for presenting disorganized behavior, agitation, auditory hallucinations, disorientation, ataxia, vomits and urinary retention. He was on clomipramine, haloperidol and clotiapine (recently added), quetiapine, fluphenazine and clonazepam. After water restriction his symptoms improved and he was discharged. Twenty-five days later, he was readmitted for presenting the same symptoms and after water restriction, he was discharged. Five days later, he was again admitted and transferred to the psychiatric ward.

Results

Haloperidol, fluphenazine and clomipramine were replaced by clozapine. These changes lead him to normalize the hypoosmolality and reduce his water-voracity. Endocrinology team did not label this episode of SIADH due to its borderline blood and urine parameters.

Conclusions

Hyponatremia is frequent in schizophrenic patients and may have severe consequences. Therefore, a prompt recognition and treatment is warranted.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Favorable Cardiovascular Health Is Associated With Lower Health Care Expenditures and Resource Utilization in a Large US Employee Population: The Baptist Health South Florida Employee Study

OBJECTIVE

To examine the association of favorable cardiovascular health (CVH) status with 1-year health care expenditures and resource utilization in a large health care employee population.

PARTICIPANTS AND METHODS

Employees of Baptist Health South Florida participated in a health risk assessment from January 1 through September 30, 2014. Information on dietary patterns, physical activity, blood pressure, blood glucose level, total cholesterol level, and smoking were collected. Participants were categorized into CVH profiles using the American Heart Association's ideal CVH construct as optimal (6-7 metrics), moderate (3-5 metrics), and low (0-2 metrics). Two-part econometric models were used to analyze health care expenditures.

RESULTS

Of 9097 participants (mean ± SD age, 42.7±12.1 years), 1054 (11.6%) had optimal, 6945 (76.3%) had moderate, and 1098 (12.1%) had low CVH profiles. The mean annual health care expenditures among those with a low CVH profile was $10,104 (95% CI, $8633-$11,576) compared with $5824 (95% CI, $5485-$6164) and $4282 (95% CI, $3639-$4926) in employees with moderate and optimal CVH profiles, respectively. In adjusted analyses, persons with optimal and moderate CVH had a $2021 (95% CI, -$3241 to -$801) and $940 (95% CI, -$1560 to $80) lower mean expenditure, respectively, than those with low CVH. This trend remained even after adjusting for demographic characteristics and comorbid conditions as well as across all demographic subgroups. Similarly, health care resource utilization was significantly lower in those with optimal CVH profiles compared with those with moderate or low CVH profiles.

CONCLUSION

Favorable CVH profile is associated with significantly lower total medical expenditures and health care utilization in a large, young, ethnically diverse, and fully insured employee population.

Abstract P1-02-10: Reduced serum B-cell maturation antigen levels predict poor outcome in metastatic breast cancer patients in a phase 3 randomized 2nd-line hormone therapy trial

Background: B-cell maturation antigen (BCMA) is a member of the tumor necrosis factor receptor family and has two ligands, B-cell activating factor (BAFF) and a proliferation inducing ligand (APRIL). These ligands activate cell proliferation and inhibit apoptosis of normal and malignant B-cells including in multiple myeloma (MM) cell lines. Berenson et al have recently reported that circulating BCMA levels are elevated in B-cell malignancies and can be used to monitor disease and predict PFS and OS for patients with MM, Waldenstroms's macroglobulinemia and chronic lymphocytic leukemia (CLL). On the other hand, recent studies have shown that serum BCMA levels are very low among patients with MM in complete remission with low antibody levels and those with primary immune deficiencies specifically those with combined variable immune deficiency and X-linked agammaglobulinemia. Studies of the potential role of serum BCMA for patients with solid tumors has not been evaluated to date.

Methods: The pretreatment serum from 139 patients with hormone receptor-positive metastatic breast cancer who were enrolled in a phase 3 randomized clinical trial of second-line hormone therapy was evaluated using an ELISA for BCMA. The BCMA ELISA was from R&D Systems (Minneapolis, MN). Serum BCMA was correlated with TTP using categorical serum BCMA cutpoints.

Results: Pretreatment serum BCMA levels had a median of 55.61 ng/ml, an interquartile range of 34.20 and 78.79 ng/ml, and full range from 3.99 to 1193.26 ng/ml. In univariate analysis for TTP, reduced serum BCMA correlated with shorter TTP at the following dichotomous cutpoints: 15 ng/ml [HR=2.60, p=0.064, n=6 (4.3%) of patients below cutpoint]; 20 ng/ml [HR=2.88, p=0.005, n=10 (7.2%) of patients below cutpoint]; 25 ng/ml [HR=2.16, p=0.023, n=13 (9.4%) of patients below cutpoint]; and 30 ng/ml [HR=1.77, p=0.016, n=27 (19.4%) of patients below the cutpoint].

Conclusions: In a phase 3 randomized clinical trial of second-line hormone therapy among patients with hormone receptor-positive metastatic breast cancer, reduced pretreatment serum BCMA was associated with shorter TTP. This may be due to the association of reduced serum BCMA with immune deficiency; and, thus, lead to shorter TTP among patients with metastatic breast cancer. Evaluation of serum BCMA as a new biomarker to predict outcomes for breast cancer and other solid tumor patients deserves further study.

Citation Format: Ali SM, Leitzel K, Li M, Udd K, Wang J, Sanchez E, Chen H, Berenson J, Lipton A. Reduced serum B-cell maturation antigen levels predict poor outcome in metastatic breast cancer patients in a phase 3 randomized 2nd-line hormone therapy trial [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P1-02-10.

Abstract P257: Taking Fresh Aim at Improving Blood Pressure Control

Nearly 70 million adults in the United States have hypertension, and only about 50% of those adults have a blood pressure reading below 140/90 mm Hg. Target: BP is a national initiative co-led by the American Heart Association and American Medical Association aimed at improving blood pressure control nationally to reduce the number of Americans who suffer the consequences of high blood pressure including myocardial infarctions, heart failure, strokes, and chronic kidney disease. Target: BP will equip physician practices and health care systems with the resources and technical assistance to achieve a minimum 70% blood pressure control rate with a target of reaching 80% or higher. Target: BP is a multi-faceted, evidence-based, data-driven quality improvement initiative that leverages the AMAs membership and strategic focus on improving health outcomes and the AHAs success in disseminating large scale improvement initiatives like Get With the Guidelines - Stroke, an effective cerebrovascular quality improvement and recognition program. This initiative offers participating healthcare systems, ambulatory clinical practices and individual clinicians the following: A mass communication campaign to raise public awareness about the importance of controlling high blood pressure A quality improvement program and relevant tools to help clinicians and care teams implement the latest hypertension guidelines and improve management and treatment of patients with hypertension, including check lists, treatment algorithms, protocols and fact sheets Opportunities to contribute data for tracking blood pressure control rates and benchmarking against other participants regionally and nationally Opportunities to be recognized formally for achieving a 70% blood pressure control rate, improving blood pressure control, reducing therapeutic inertia and using self-measured blood pressure monitoring Access to a national advisory group of experts in improving blood pressure control Since its initiation in November 2015, over 250 healthcare systems and clinics have committed to participate in Target: BP.

Interassociation consensus statement on cardiovascular care of college student-athletes

Cardiovascular evaluation and care of college student-athletes is gaining increasing attention from both the public and medical communities. Emerging strategies include screening of the general athlete population, recommendations of permissible levels of participation by athletes with identified cardiovascular conditions and preparation for responding to unanticipated cardiac events in athletic venues. The primary focus has been sudden cardiac death and the usefulness of screening with or without advanced cardiac screening. The National Collegiate Athletic Association convened a multidisciplinary task force to address cardiovascular concerns in collegiate student-athletes, and to develop consensus for an interassociation statement. This document summarises the task force deliberations and follow-up discussions, and includes available evidence on cardiovascular risk, preparticipation evaluation and the recognition of and response to cardiac arrest. Future recommendations for cardiac research initiatives, education and collaboration are also provided.

Mental Health Burden Among Impoverished HIV-Positive Patients in Peru

HIV and poor mental health are intricately related. In settings of poverty, both are often rooted in structural factors related to material and social deprivation. We performed a qualitative analysis to understand factors contributing to poor emotional health and its impact among impoverished Peruvian HIV-infected individuals. We conducted focus group discussions with patients and providers consisting of semistructured, open-ended questions. Qualitative analysis provided insight into the profound impact of depression, isolation, stigma, and lack of social support among these patients. Living with HIV contributed significantly to mental health problems experienced by HIV-positive individuals; furthermore, long-standing stressors-such as economic hardship, fragmented family relationships, and substance use-shaped patients' outlooks, and may have contributed not only to current emotional hardship but to risk factors for contracting HIV as well. Once diagnosed with HIV/AIDS, many patients experienced hopelessness, stigma, and socioeconomic marginalization. Patients tended to rely on informal sources of support, including peers and community health workers, and rarely used formal mental health services. In resource-poor settings, the context of mental health problems among HIV-positive individuals must be framed within the larger structural context of poverty and social exclusion. Optimal strategies to address the mental health problems of these individuals should include integrating mental health services into HIV care, task shifting to utilize community health workers where human resources are scarce, and interventions aimed at poverty alleviation.