The two sides reached an impasse on several issues, including the exchange ratio for the deal's stock swap.

Healthsouth said that if its stock price were to rise above $38.625 during a specified period, the exchange ratio would be adjusted.

The previous exchange ratio was 80-hundredths of a share.

The exchange ratio for those preferring stock will be fixed closer to the closing date of the transaction, the companies said.

What about the exchange ratio for the companies' stocks?

The exchange ratio is based on an average closing price of Ace stock of more than $45 a share.

The number was the average exchange ratio between the two stocks for the previous 30 days.

Neither the exchange ratio nor the number of shares to be issued in a new company has been determined.

If Healthsouth's stock price rises above $28 a share or falls below $22 before the deal is closed, the exchange ratio may be adjusted.

He seems to have crossed the respiratory exchange ratio - he's over one.