Analysts say the ECB could respond by making a third round of cheap, long-term loans to banks. Two earlier such lending offers dubbed longer-term refinancing operations, or LTRO in December 2011 and March 2012 handed out more than 1 trillion euros in low-interest loans for up to three years. That steadied the finances of banks that were having trouble borrowing elsewhere and eased market concerns that some governments might be overwhelmed by the cost of more bank bailouts.
The ECB's president, Mario Draghi, said Monday that the bank is "ready to use any instrument," including another LTRO, to keep the cost of credit down. The bank has already cut its benchmark interest rate to a record low 0.5 percent and said it will keep it at that level or lower until the economy improves.
Yet some market interest rates have risen, mainly due to expectations the U.S. Federal Reserve will tighten its monetary policy slightly in coming months. Because global markets are highly interconnected, changes in expectations in a large economy like the U.S. reverberate worldwide.
Analyst Howard Archer at IHS Global Insight said credit to companies "is clearly a major focus for the ECB at the moment."
"The ECB appears to be increasingly contemplating the provision of more liquidity through another long-term refinancing operation to help credit markets," he wrote in a research note.
Analysts say the bank could also cut its benchmark rate again if things do not improve. No cut is expected at the bank's next rate-setting meeting on Oct. 2.