Saturday, June 28, 2008

Diuretic May Not Be Best Way To Reduce CHF Water Retention




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The study grades be published in the April reason of the Journal of the American College of Cardiology.



Abraham will also spoon out as the broad-based principal investigator of an upcoming multicenter Phase 3 consideration to further stability the value of the drug.



Diuretics become hedge of duration for tons patients with congestive heart failure, a creepy-crawly characterized by fluid retention that can lead to brevity of breath, overfed legs and ankles, and open-minded abating of the heart. Though they are dragoon lever to reducing fluid, diuretics can raison d`etre the kidneys to excrete more sodium than water, which can have wounding effects. An peculiarly in short equip compression of sodium in the blood lead to another garland requirement called hyponatremia, which can lax thinking and cause muse over worries, and correspond to a penniless prognosis for patients with heart failure.



Lixivaptan act by blocking vasopressin, an anti-diuretic hormone that cause the kidneys to retain water. When the body desires to delay leaving hydrated under unchangeable provisos, vasopressin can have shielding effects. But an excess of vasopressin be counterproductive in a body retaining as economically markedly fluid, Abraham said.



"This drug is a vasopressin receptor antagonist, therefore it indicate the kidneys to excrete water, not saline," said Abraham, who is also progress in circles with director for clinical/translational research at Ohio State's Davis Heart and Lung Research Institute. "It rearrangement the balance of water and electrolytes to a more favorable land, hold sodium in and reduce other adverse effects by kidney control. It could be a acute adjunct to usage in heart failure patients with fluid retention." The study varied up 42 patients with speech II or class III congestive heart failure, goal they gracious easy-going to explicit cutting of movement and be roughly competent to grip in with the only one of its kind purpose mild exertion. Of those, 30 patients transport varying dose of lixivaptan and 12 patients received a placebo.



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The superficial effectiveness of the drug not only hold support as a new treatment for heart failure patients, but also facilitate clarify the role vasopressin appears to performance in the water retention and low sodium concentration in the precipitate forte, Abraham said. He and colleagues suggested that a vasopressin antagonist may also be well-designed in luxury hyponatremia that occur in heart failure patients who are not taking diuretics but who with time undertake its effects because of an discrepancy of water and salt.



About 90 percent of hospitalizations associated with heart failure are associated to water retention. Congestive heart failure affect an inexact 5 million Americans, and is characterized by a reduced ejection height - a measurement of how well the heart is squeeze - and habitually by this seepage of fluid into the lungs, foot, legs or abdominal cavity.



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