نتایج جستجو برای: heart dose

تعداد نتایج: 683169  

2017
Alain Cohen‐Solal Arnold F. Jacobson Ileana L. Piña

AIMS Extent of cardiac sympathetic activation can be estimated from physiological parameters, blood biomarkers, and imaging findings. This study examined the prognostic value of three markers of sympathetic activity and their relationship to beta blocker dose in heart failure patients. METHODS AND RESULTS A post hoc analysis of 858 heart failure subjects in the ADMIRE-HF trial was performed. ...

2013
Mehmet Hakan Dogan Seyit Burhanedtin Zincircioglu Mahmut Aydinol

In breast cancer radiotherapy, the internal mammary lymphatic chain is treated in the target volume in a group of patients with high risk criteria. There are a number of different techniques in breast radiotherapy because of the variability of the anatomic region, structures and risk criteria in the irradiation field. When irradiating the target volume we also consider homogeneity of dose distr...

2002
Zoltán Szabó

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Journal: :JCI insight 2017
Samar Farha Didem Saygin Margaret M Park Hoi I Cheong Kewal Asosingh Suzy Aa Comhair Olivia R Stephens Emir C Roach Jacqueline Sharp Kristin B Highland Frank P DiFilippo Donald R Neumann W H Wilson Tang Serpil C Erzurum

BACKGROUND Right-sided heart failure is the leading cause of death in pulmonary arterial hypertension (PAH). Similar to left heart failure, sympathetic overactivation and β-adrenoreceptor (βAR) abnormalities are found in PAH. Based on successful therapy of left heart failure with β-blockade, the safety and benefits of the nonselective β-blocker/vasodilator carvedilol were evaluated in PAH. ME...

Journal: :Biological psychiatry 2006
Linda Booij Cees A Swenne Jos F Brosschot P M Judith Haffmans Julian F Thayer A J Willem Van der Does

BACKGROUND Depression is a major risk factor for cardiovascular disease. An important risk factor for cardiovascular disease, low heart rate variability, often has been found in depressed patients and has been associated with impulsivity. The present study investigated whether experimental lowering of serotonin would decrease heart rate variability and increase impulsivity in remitted depressed...

Journal: :The Medical journal of Malaysia 2012
H T Ong L M Ong F P Kow

Beta-blockers are underutilised in heart failure because clinicians may be unsure whether all beta-blockers are useful, how therapy should be initiated and whether beta-blockers are contraindicated in some patients. Bisoprolol, carvedilol and metoprolol succinate have been clearly proven to reduce mortality and hospitalisation in patients with Class II to IV heart failure; limited evidence also...

Journal: :iranian journal of radiation research 0
e.m.t. harki salahaddin university, college of science, kurdistan of iraq, erbeel, iraq a.t. al-kinani al-mustenserya university, college of medicine, baghdad, iraq and supreme council for environment and natural reserves, doha, qatar

background: exposure conditions in ct examinations are quite different from conventional xray. in ct examination higher dose is given to patient in comparison with the dose in other diagnostic examinations. in order to calculate organ effective dose in chest ct, monte carlo simulation has been used in this study. materials and methods: the impact survey data were used to determine the parameter...

Journal: :Heart 2016
Dorothy M Gujral Guy Lloyd Sanjeev Bhattacharyya

Radiation to the mediastinum is a key component of treatment with curative intent for a range of cancers including Hodgkin's lymphoma and breast cancer. Exposure to radiation is associated with a risk of radiation-induced heart valve damage characterised by valve fibrosis and calcification. There is a latent interval of 10-20 years between radiation exposure and development of clinically signif...

Journal: :Circulation research 2014
Krisztina Zsebo Alex Yaroshinsky Jeffrey J Rudy Kim Wagner Barry Greenberg Mariell Jessup Roger J Hajjar

RATIONALE The Calcium Up-Regulation by Percutaneous Administration of Gene Therapy In Cardiac Disease (CUPID 1) study was a phase 1/phase 2 first-in-human clinical gene therapy trial using an adeno-associated virus serotype 1 (AAV1) vector carrying the sarcoplasmic reticulum calcium ATPase gene (AAV1/SERCA2a) in patients with advanced heart failure. The study explored potential benefits of the ...

2015
Rosanna Yeung Leigh Conroy Karen Long Daphne Walrath Haocheng Li Wendy Smith Alana Hudson Tien Phan

BACKGROUND Deep inspiration breath hold (DIBH) reduces heart and left anterior descending artery (LAD) dose during left-sided breast radiation therapy (RT); however there is limited information about which patients derive the most benefit from DIBH. The primary objective of this study was to determine which patients benefit the most from DIBH by comparing percent reduction in mean cardiac dose ...

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