نتایج جستجو برای: aqueous fraction af

تعداد نتایج: 252546  

Journal: :European heart journal 2004
Jacqueline M Leung Wayne H Bellows Nelson B Schiller

AIMS Despite the prevalence of atrial fibrillation (AF) occurring after cardiac surgery, its pathophysiology is incompletely understood. Specifically, whether left atrial (LA) structural remodelling occurs, contributing to a decrement in atrial function and AF has not been previously determined. This study sought to determine the relationship between LA function and post-operative AF. METHODS...

Journal: :Circulation 2008
Gregory A Fleming Katherine T Murray Chang Yu John G Byrne James P Greelish Michael R Petracek Steven J Hoff Stephen K Ball Nancy J Brown Mias Pretorius

BACKGROUND Postoperative atrial fibrillation (AF), a frequent complication after cardiac surgery, causes morbidity and prolongs hospitalization. Inotropic drugs are commonly used perioperatively to support ventricular function. This study tested the hypothesis that the use of inotropic drugs is associated with postoperative AF. METHODS AND RESULTS We evaluated perioperative risk factors in 23...

Journal: :African journal of traditional, complementary, and alternative medicines : AJTCAM 2012
A A Adeneye O O Adeyemi E O Agbaje M O Sofidiya

The present study evaluated the antihyperglycaemic effect and mechanism of action of fractions of the aqueous seed extract of Hunteria umbellata (K. Schum.) Hallier f. (HU) in normal and alloxan-induced hyperglycaemic rats. HU was partitioned in chloroform, acetyl acetate and butan-1-ol to give chloroform fraction (HU c), ethyl acetate fraction (HU e), butanol fraction (HU b) and the "residue" ...

Journal: :Hellenic journal of cardiology : HJC = Hellenike kardiologike epitheorese 2008
Michalis Efremidis Antonios Sideris Sotirios Xydonas Konstantinos P Letsas Ioannis P Alexanian Dimitrios Manolatos Constantinos C Mihas Gerasimos S Filippatos Fotios Kardaras

INTRODUCTION The management of patients with heart failure and atrial fibrillation (AF) is a medical challenge, especially in the case of patients in whom sinus rhythm or rate control cannot be achieved with optimal pharmaceutical treatment. METHODS Thirteen consecutive patients (11 men and 2 women, 35-70 years old, median age 55 +/- 23 years) with heart failure (NYHA I-IV, median ejection fr...

Masoud Aghajani Reza Razizadeh, Vahid Mohebbi,

The super-saturation condition has to be provided to form gas hydrates. Consequently, the prediction of the guest molecule fraction in the aqueous phase is crucial in the study of the gas hydrate kinetics. In the present work, several experiments were carried out in a semi-batch reactor in order to determine the mole fraction of methane and ethane during gas hydrates formation (growth stage...

Journal: :Circulation 1985
A Kitabatake H Ito M Inoue J Tanouchi K Ishihara T Morita K Fujii Y Yoshida T Masuyama H Yoshima

The aortic regurgitant fraction was estimated noninvasively in 20 patients with aortic regurgitation from systolic aortic and pulmonary volume flow determined by duplex Doppler echocardiography. By assuming that an excess of the aortic volume flow (AF) compared with the pulmonary volume flow (PF) is due to aortic regurgitant flow, the aortic regurgitant fraction (RF) was calculated as follows: ...

Journal: :Journal of nutritional science and vitaminology 2008
Longquan Yu Nobuya Shirai Hiramitsu Suzuki Tsuyoshi Hosono Yoshijiro Nakajima Masahiro Kajiwara Kazuhiro Takatori

Lipids extracted from tsao-ko were separated into three fractions with silica gel column chromatography and fed to mice (3 mo old) for 90 d to clarify their inhibitory activity on digestive enzyme activity. The diets contained the following: control--no tsao-ko, 0.05% total lipid of tsao-ko (TL), 0.0109% chloroform fraction (CF), 0.0245% acetone fraction (AF), or 0.00365% methanol fraction (MeF...

2009
Jeong-Hwan Park Yong-Seog Oh Ji-Hoon Kim Woo-Baek Chung Su-Sung Oh Dong-Hyun Lee Yun-Seok Choi Woo-Seung Shin Chul-Soo Park Ho-Joong Youn Wook-Sung Chung Man-Young Lee Ki-Bae Seung Tae-Ho Rho Jae-Hyung Kim Soon-Jo Hong

BACKGROUND AND OBJECTIVES It is known that angiotensin converting enzyme inhibitors and angiotensin II type 1 receptor blockers (ACEIs and ARBs, respectively) are effective in preventing atrial fibrillation (AF) in high-risk patients. However, it is not known whether ACEIs and ARBs are effective in preventing the recurrence of AF after catheter ablation. SUBJECTS AND METHODS One hundred fifty...

2015
Yuko Y. Inoue Abdullah Alissa Irfan M. Khurram Kotaro Fukumoto Mohammadali Habibi Bharath A. Venkatesh Stefan L. Zimmerman Saman Nazarian Ronald D. Berger Hugh Calkins Joao A. Lima Hiroshi Ashikaga

BACKGROUND Recent evidence suggests that left atrial (LA) dysfunction may be mechanistically contributing to cerebrovascular events in patients with atrial fibrillation (AF). We investigated the association between regional LA function and a prior history of stroke during sinus rhythm in patients referred for catheter ablation of AF. METHODS AND RESULTS A total of 169 patients (59 ± 10 years,...

2012
Yeonyee E. Yoon Hyun-Jin Kim Sung-Ai Kim Seong Hwan Kim Jae-Hyeong Park Kyoung-Ha Park Seonghoon Choi Min-Kyu Kim Hyun-Sook Kim Goo-Yeong Cho

BACKGROUND Abnormalities in the left atrial (LA) structure and function may develop in patients with paroxysmal atrial fibrillation (AF). We sought to determine the contribution of LA mechanical function, including LA stiffness, to AF by comparing patients with paroxysmal AF with normal control subjects, and to evaluate whether LA mechanical function and stiffness are related with the structura...

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