** Shares of medical device maker Baxter BAX.N down 10.9% at $25 premarket

** BAX posts Q2 adj. profit of 54 cents per share, compared with analysts' estimate of 61 cents per share, according to data compiled by LSEG

** It reports Q2 sales of $2.81 billion, below estimates of $2.82 billion

** Company expects Q3 adj. profit in the range of 58 cents to 62 cents per share, below estimates of 65 cents

** Up to last close, stock down 3.8% YTD

(Reporting by Siddhi Mahatole)

((siddhi.mahatole@thomsonreuters.com))