That led to slowdowns at United, Delta and Northwest this summer and fall that disrupted hundreds of flights.
The demand led to slowdowns for many trying to download the software, and then to errors as their systems tried to connect back to Apple's servers, which had to verify the update on each device.
But forecasters now believe that its impact will lead to a slowdown over the next year or two.
Mr. Biegelsen said the continuing federal investigation of Infuse, along with the F.D.A.'s rejection of Amplify, could lead to a slowdown of Infuse sales over the next year.
The aging of the baby boomers is expected to lead to a slowdown in the growth of stock holdings in retirement accounts.
It is unclear whether the latest delay will now lead to another slowdown, but the administration also announced changes to subsidy payments given to insurers that are intended to prevent a shortfall in enrollment leading to higher premiums.
Investors were unsettled by reports of further Russian incursions into Ukraine, while banking shares moved lower on signs that loan growth continued to look weak at European banks, which could lead to a slowdown in their business.
Fujito warned that prolonged turmoil in Chinese stocks could lead to a slowdown in domestic consumption, which would adversely impact Japanese shares that are most exposed to movements in the Chinese economy.
Charles L. Evans, president of the Federal Reserve Bank of Chicago, said declining house prices could lead to a slowdown in consumer spending, more mortgage delinquencies, more trouble in financial markets and "serious downside risks" to the overall economy.
