They are designed to help the pumping action of the left ventricle - one of the four chambers that make up the heart.

BBC: Image of heart failure

His last big action before the weekend poll was to court popularity by pumping taxpayers' money into a large, troubled steel company.

ECONOMIST: Chancellor Schr?der?

Following a crowd-pumping opening ceremony, day one of tournament action commenced with group stage play, throwing each competitor into a demanding run of best of three series.

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