Abed, B.Pharm., M.B.B.S., of the University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia and colleagues evaluated the effect of a structured weight reduction program on atrial fibrillation symptoms. The study was conducted between June 2010 and December 2011 among overweight and obese patients with symptomatic atrial fibrillation. Patients underwent a median (midpoint) of 15 months of follow-up. Patients were randomized to weight management or general lifestyle advice. Both groups underwent intensive management of cardiometabolic risk factors (hypertension, hyperlipidemia, glucose intolerance, sleep apnea, and alcohol and tobacco use). The intervention group experienced greater reduction, compared with the control group, in weight and in atrial fibrillation, symptom severity, number of episodes, and cumulative duration in minutes.
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Researchers Find Insulin Status an Important Determinant of the Positive Effect of Weight Reduction on Vascular Function
are now obese with 65 million additional cases estimated by 2030. While obesity confers serious health concerns and increased all-cause mortality, the vast majority of deaths are due to cardiovascular causes such as ischemic heart disease and stroke. Researcher prospectively followed 208 overweight or obese patients (BMI 25 kg/m2) receiving medical/dietary (48 percent) or bariatric surgical (52 percent) weight loss treatment during a period of approximately one year. They measured plasma metabolic parameters and vascular endothelial function using ultrasound at baseline and following weight loss intervention, and stratified analyses by median plasma insulin levels. They found that individuals with higher baseline plasma insulin levels (above median >12 uIU/ml), who had greater than 10 percent weight loss had significantly improved brachial artery macro-vascular flow-mediated vasodilation and micro-vascular reactive hyperemia. In contrast, vascular function did not change significantly in the lower insulin group (12 uIU/mL) despite similar degree of weight loss.
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Julia – Here Be Hippogriffs 