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Jose A Morfin, Richard J Fluck, Eric D Weinhandl, Sheru Kansal, Peter A McCullough, Paul Komenda
Hemodialysis (HD) treatment can be difficult to tolerate. Common complications are intradialytic hypotension (IDH) and long time to recovery after an HD session. IDH, as defined by nadir systolic blood pressure < 90mmHg and intradialytic decline > 30mmHg, occurs in almost 8% of HD sessions. IDH may be caused by aggressive ultrafiltration in response to interdialytic weight gain, can lead to myocardial stunning and cardiac arrhythmias, and is associated with increased risk for death. Long recovery time after a treatment session is also common...
November 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
Barbara J Morgan, Melissa L Bates, Rodrigo Del Rio, Zunyi Wang, John M Dopp
Chronic exposure to intermittent hypoxia (CIH) elicits plasticity of the carotid sinus and phrenic nerves via reactive oxygen species (ROS). To determine whether CIH-induced alterations in ventilation, metabolism, and heart rate are also dependent on ROS, we measured responses to acute hypoxia in conscious rats after 14 and 21 d of either CIH or normoxia (NORM), with or without concomitant administration of allopurinol (xanthine oxidase inhibitor), combined allopurinol plus losartan (angiotensin II type 1 receptor antagonist), or apocynin (NADPH oxidase inhibitor)...
September 2, 2016: Respiratory Physiology & Neurobiology
Rochelle F Hanson, Sonja Schoenwald, Benjamin E Saunders, Jason Chapman, Lawrence A Palinkas, Angela D Moreland, Alex Dopp
BACKGROUND: High rates of youth exposure to violence, either through direct victimization or witnessing, result in significant health/mental health consequences and high associated lifetime costs. Evidence-based treatments (EBTs), such as Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), can prevent and/or reduce these negative effects, yet these treatments are not standard practice for therapists working with children identified by child welfare or mental health systems as needing services...
2016: International Journal of Mental Health Systems
J Todd Arnedt, Leslie M Swanson, Richard R Dopp, Holli S Bertram, Ann J Mooney, Edward D Huntley, Robert F Hoffmann, Roseanne Armitage
OBJECTIVE: Antidepressant response onset is delayed in individuals with major depressive disorder (MDD). This study compared remission rates and time to remission onset for antidepressant medication delivered adjunctively to nightly time in bed (TIB) restriction of 6 hours or 8 hours for the initial 2 weeks. METHODS: Sixty-eight adults with DSM-IV-diagnosed MDD (mean ± SD age = 25.4 ± 6.6 years, 34 women) were recruited from September 2009 to December 2012 in an academic medical center...
August 16, 2016: Journal of Clinical Psychiatry
Tetsuo Shoji, Kakuya Niihata, Shingo Fukuma, Shunichi Fukuhara, Tadao Akizawa, Masaaki Inaba
BACKGROUND: Serum ferritin concentration >100 ng/mL was associated with a higher risk of death in hemodialysis patients in Japan, whereas such an association was less clear in hemodialysis patients in Western countries. Since Japanese dialysis patients are generally less inflamed than those in Western countries, inflammation may modify the association between serum ferritin and the adverse outcomes. METHODS: We performed an observational cohort study using data from 2606 Japanese hemodialysis patients who participated in the Dialysis Outcomes and Practice Patterns Study (DOPPS) III (2005-2008) or DOPPS IV (2009-2012)...
August 8, 2016: Clinical and Experimental Nephrology
Leslie M Swanson, Edward D Huntley, Holli Bertram, Ann Mooney, Richard Dopp, Robert Hoffmann, Roseanne Armitage, J Todd Arnedt
BACKGROUND: There are complex, bidirectional associations between major depressive disorder and insomnia. In the present study, we evaluated insomnia as a moderator of response to antidepressant therapy in the context of a sleep manipulation (time in bed restriction) for major depressive disorder. METHODS: Fifty-eight adults with major depressive disorder received 8 weeks of fluoxetine 20-40 mgs and were randomized to 8 hr time in bed (8h TIB) or 6 hr time in bed (6h TIB) for the first 2 weeks (participants in the 6h TIB condition were further randomized to a delayed bedtime (Late Bedtime) or advanced rise time (Early Rise Time) group)...
August 5, 2016: Behavioral Sleep Medicine
A Döpp, E Guillaume, C Thaury, J Gautier, K Ta Phuoc, V Malka
Recent results on laser wakefield acceleration in tailored plasma channels have underlined the importance of controlling the density profile of the gas target. In particular, it was reported that the appropriate density tailoring can result in improved injection, acceleration, and collimation of laser-accelerated electron beams. To achieve such profiles, innovative target designs are required. For this purpose, we have reviewed the usage of additive layer manufacturing, commonly known as 3D printing, in order to produce gas jet nozzles...
July 2016: Review of Scientific Instruments
Tatsuyoshi Ikenoue, Shingo Fukuma, Yosuke Yamamoto, Shin Yamazaki, Tadao Akizawa, Takashi Akiba, Akira Saito, Kiyoshi Kurokawa, Shunichi Fukuhara
To help relieve the burden of dietary restrictions experienced by many hemodialysis (HD) patients, dialysis staff may encourage patients, with no consideration to the degree of family support. Here, we clarified the effect of staff encouragement and living conditions on the burden of dietary restrictions in HD patients. This retrospective cohort study was conducted using data from the Dialysis Outcomes and Practice Patterns Study (DOPPS) I and III. We enrolled patients aged 18-75 years on HD therapy for at least 3 months...
July 14, 2016: Therapeutic Apheresis and Dialysis
Linda Gehrmann, Helena Bielak, Maximilian Behr, Fabian Itzel, Sven Lyko, Anne Simon, Gotthard Kunze, Elke Dopp, Martin Wagner, Jochen Tuerk
Endocrine-disrupting chemicals are mainly discharged into the environment by wastewater treatment plants (WWTPs) and are known to induce adverse effects in aquatic life. Advanced treatment with ozone successfully removes such organic micropollutants, but an increase of estrogenic effects after the ozonation of hospital wastewater was observed in previous studies. In order to investigate this effect, estrogenic and androgenic as well as anti-estrogenic and anti-androgenic activities were observed during treatment of hospital wastewater using three different effect-based reporter gene bioassays...
July 11, 2016: Environmental Science and Pollution Research International
Na Young Lee, Hae-Young Lopilly Park, Chan Kee Park
PURPOSE: The aim of this study was to evaluate the effects of a dorzolamide-timolol fixed combination (DTFC) on intraocular pressure (IOP), heart rate (HR), blood pressure (BP), ocular perfusion pressure (OPP), and diastolic ocular perfusion pressure (DOPP) in patients with normal-tension glaucoma (NTG). METHODS: A prospective, interventional, single-blind, single-center study was conducted. Newly diagnosed NTG patients that had not been treated with a glaucoma medication in the most recent 4 weeks were included...
September 2016: Japanese Journal of Ophthalmology
Jeffrey Perl, Angelo Karaboyas, Hal Morgenstern, Ananda Sen, Hugh C Rayner, Raymond C Vanholder, Christian Combe, Takeshi Hasegawa, Fredric O Finkelstein, Antonio A Lopes, Bruce M Robinson, Ronald L Pisoni, Francesca Tentori
BACKGROUND: Cross-sectional health-related quality of life (HR-QOL) measures are associated with mortality in hemodialysis (HD) patients. The impact of changes in HR-QOL on outcomes remains unclear. We describe the association of prior changes in HR-QOL with subsequent mortality among HD patients. METHODS: A total of 13 784 patients in the Dialysis Outcomes and Practice Patterns Study had more than one measurement of HR-QOL. The impact of changes between two measurements of the physical (PCS) and mental (MCS) component summary scores of the SF-12 on mortality was estimated with Cox regression...
June 7, 2016: Nephrology, Dialysis, Transplantation
Nathan J Menninga, Kalynn A Rohde, Zachary W Schlei, Krista M Katers, Ashley K Weber, Marissa M Brokhof, Donald S Hawes, Kelly L Radford, Mary L Francois, Richard D Cornwell, Ruth Benca, Mary S Hayney, John M Dopp
CONTEXT: Complications following lung transplantation are common and significantly reduce quality of life, and increase morbidity and mortality. Increasing evidence suggests sleep disorders are prevalent following lung transplantation, but factors associated with their development are not known. OBJECTIVES: We sought to evaluate the prevalence of restless legs syndrome (RLS) in a lung transplant population and determine if a relationship exists between RLS and exposure to immunosuppressant medications...
June 2016: Progress in Transplantation
Stefan D Anker, Iain A Gillespie, Kai-Uwe Eckardt, Florian Kronenberg, Sharon Richards, Tilman B Drueke, Peter Stenvinkel, Ronald L Pisoni, Bruce M Robinson, Daniele Marcelli, Marc Froissart, Jürgen Floege
BACKGROUND: A simple clinical tool to predict cardiovascular disease risk does not exist for haemodialysis patients. The long-term coronary risk Framingham Heart Study Risk score (FRS), although used in this population, may be inadequate. Therefore, we developed separate risk-scores for cardiovascular mortality (CVM) and cardiovascular morbidity & mortality (CVMM) in a Fresenius Medical Care-based haemodialysis patient cohort (AROii). METHODS: Applying a modified FRS approach, we derived and internally validated two-year risk-scores in incident European adult patients randomly assigned to a development (N=4831) or a validation (N=4796) dataset...
August 1, 2016: International Journal of Cardiology
Li Zuo, Mia Wang, Fanfan Hou, Yucheng Yan, Nan Chen, Jiaqi Qian, Mei Wang, Brian Bieber, Ronald L Pisoni, Bruce M Robinson, Shuchi Anand
BACKGROUND: As the utilization of hemodialysis increases in China, it is critical to examine anemia management. METHODS: Using data from the China Dialysis Outcomes and Practice Patterns Study (DOPPS), we describe hemoglobin (Hgb) distribution and anemia-related therapies. RESULTS: Twenty one percent of China's DOPPS patients had Hgb <9 g/dl, compared with ≤10% in Japan and North America. A majority of medical directors targeted Hgb ≥11...
2016: Blood Purification
Leoné Malan, Mark Hamer, Roland von Känel, Markus P Schlaich, Manja Reimann, Nancy Frasure-Smith, Gavin W Lambert, Walthard Vilser, Brian H Harvey, Faans Steyn, Nico T Malan
BACKGROUND: Depression has been associated with impaired nitric oxide (NO)-mediated vasodilation and vascular dysregulation (VD). Whether depression and NO levels will disturb retinal haemodynamics is not clear. OBJECTIVES AND METHODS: Associations between the retinal vasculature, diastolic ocular perfusion pressure (DOPP) as measure of hypoperfusion, NO metabolites (NOx) and depression symptoms were assessed. Chronic VD risk markers [depression symptoms (Patient Health Questionnaire/PHQ-9 ≥ 10) and 24 h pulse pressure] were determined in a bi-ethnic cohort (n = 313; 48...
May 1, 2016: Nitric Oxide: Biology and Chemistry
Barbara J Morgan, Russell Adrian, Zun-Yi Wang, Melissa L Bates, John M Dopp
We determined the effects of chronic exposure to intermittent hypoxia (CIH) on chemoreflex control of ventilation in conscious animals. Adult male Sprague-Dawley rats were exposed to CIH [nadir oxygen saturation (SpO2), 75%; 15 events/h; 10 h/day] or normoxia (NORM) for 21 days. We assessed the following responses to acute, graded hypoxia before and after exposures: ventilation (V̇e, via barometric plethysmography), V̇o2 and V̇co2 (analysis of expired air), heart rate (HR), and SpO2 (pulse oximetry via neck collar)...
May 15, 2016: Journal of Applied Physiology
Yuan Bo Liang, Qiang Zhou, David S Friedman, Li Xia Guo, Lan Ping Sun, Qiu Feng Zong, Xiao Dong Yang, Ning Li Wang
PURPOSE: To compare the 24-hour ocular perfusion pressure (OPP) among patients with primary open angle glaucoma (POAG) and those with suspected POAG identified in a population-based study in China. METHODS: Forty-seven patients with POAG and 35 with suspected POAG attended the 24-hour OPP study. Intraocular pressure (IOP) and blood pressure (BP) were measured at 2, 6, and 10 AM and 2, 6, and 10 PM. Subjects were not taking any medications to lower IOP, which was measured with Goldmann applanation in an upright sitting position...
March 2016: Asia-Pacific Journal of Ophthalmology
Naoki Kimata, Ken Tsuchiya, Takashi Akiba, Kosaku Nitta
BACKGROUND: Japanese patients undergoing dialysis have an extremely low mortality rate compared with those in the United States and Europe. As shown in the Dialysis Outcomes 38; Practice Patterns Study (DOPPS), certain features of dialysis treatment, such as single treatment time and amount of blood flow, are unique to Japan, but factors contributing to the low mortality risk are unclear. Although DOPPS is a multi-country prospective cohort study, the study results may not entirely reflect the real trend in Japan because the number of Japanese institutions participating in the study is small...
2015: Blood Purification
D A Conroy, A M Czopp, D Dore-Stites, R R Dopp, R Armitage, T F Hoban, J T Arnedt
Nonpharmacological treatments for insomnia in adolescents with depression are lacking. This qualitative study was a thematic analysis of the unique characteristics of and preferences for an insomnia treatment in a group of depressed adolescents. Fourteen adolescents with insomnia (age range = 14-19, mean = 17, SD ± 1.7; 71% female) and depression completed a 90-min focus group. Information was elicited about sleep disruptions, insomnia's impact on mood, and preferences for insomnia treatments. Themes included poor daytime functioning affecting sleep, lack of benefit from sleep medication, and bedtime rumination...
December 8, 2015: Behavioral Sleep Medicine
S Vanita Jassal, Angelo Karaboyas, Leah A Comment, Brian A Bieber, Hal Morgenstern, Ananda Sen, Brenda W Gillespie, Patricia De Sequera, Mark R Marshall, Shunichi Fukuhara, Bruce M Robinson, Ronald L Pisoni, Francesca Tentori
BACKGROUND: Patients receiving long-term dialysis have among the highest mortality and hospitalization rates. In the nonrenal literature, functional dependence is recognized as a contributor to subsequent disability, recurrent hospitalization, and increased mortality. A higher burden of functional dependence with progressive worsening of kidney function has been observed in several studies, suggesting that functional dependence may contribute to both morbidity and mortality in dialysis patients...
February 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
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