ECB President Jean-Claude Trichet is due to comment on the competing threats of high euro zone inflation and slower growth at 1330 GMT when he holds his monthly news conference and delivers a quarterly update to the bank's economic projections.
All 72 economists polled by Reuters last week expected the ECB to keep rates on hold this month for a ninth month in a row <ECB/INT>, and the euro was little moved versus the dollar <EUR=>, despite hitting a record high of $1.5349 earlier in the day.
Economists expect ECB staff to forecast lower growth but higher inflation for this year and possibly for 2009, highlighting the Governing Council's dilemma as food and energy prices climb. It is not helped by the strong euro, which holds back inflation but also hampers growth.
Annual inflation in the 15-nation region hit a record high of 3.2 percent in January and February, dampening expectations that the ECB would soon follow other major central banks and loosen monetary policy.
Many economists believe the inflation projections will be revised up. BNP Paribas economist Ken Wattret said he expected the 2009 forecast to be raised to 1.9 or 2.0 percent from the current midpoint forecast of 1.8 percent.