Zollner said that, if anything, rising interest rate markets had "taken a breather" from the announcement, adding most of the movement in markets took place last week in anticipation of a rate hike.
"The script may only have been written a week ago but the Fed stuck to it," she said.
There were no hawkish surprises within the text or the so-called "dot plot" rate projections, which show the bank hiking rates three times in total this year.
Westpac said the statement did not appear to portray a significant "hawkish shift" by the US Federal Reserve.
The bank said in a commentary the risks were still "roughly balanced", the outlook was for "moderate growth", and the rates guidance called for gradualism - "all bedrock comments that the Fed has stuck with for some time now."