European equity markets were poised to open little changed Tuesday as investors adopted a cautious stance before three major central bank policy decisions. The U.S. Federal Reserve and Bank of Japan are widely expected to raise interest rates on Wednesday and Friday, respectively, while the Bank of England is expected to leave policy unchanged on Thursday. Rising oil prices were adding to inflationary pressures, and higher global bond yields were weighing further on equities. Investors in Europe were also watching UK unemployment and German economic sentiment data, with no major earnings reports scheduled. Futures for the Euro Stoxx 50 and Stoxx 600 were hovering around the flatline in premarket trading.