sister's life when she choked on a piece of LEGO.Harrison Walsmley, 10, immediately used the "Heimlich manoeuvre" after six-year-old Eva barged into his room crying and struggling to breathe.He said he knew what he needed to do after learning the life-saving first aid technique at his school way in March.He managed to dislodge the Lego by hitting her back multiple times before performing the abdominal thrusts that expel air and any objects from the lungs.Harrison, from Blackburn, Lancs., said: "It was terrifying when I had to put the knowledge I'd learned into action but I'm happy I was able to do it all right."I just wanted Eva to be alright and be safe."I knew what I needed to do.
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