The prospect that the Federal Reserve will begin a fourth round of asset purchases appears to be fading as the economy improves. The members of the Fed’s policy-making committee barely discussed new efforts to bolster growth during their most recent meeting in mid-March, according to an account of that meeting released by the Fed on Tuesday.

While the committee remains committed to its existing efforts to stimulate growth, the account said that there was no support for additional measures like new asset purchases unless “the economy lost momentum” or inflation settled below the 2 percent annual rate the central bank considers healthy.