Or a wireless scale can notify a nurse when a congestive heart failure patient gains weight indicating dangerous fluid retention.

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The whole construction is similar to an oil well on land, with the weight of the drilling fluid designed to contain the geological pressures deep in the ground.

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But patients on Actos were significantly more likely to have side effects, including fluid buildup and weight gain.

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Patients often gain a lot of weight, and the ups and downs in fluid buildup stress the body and heart.

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