 Clevidipine will be infused at an initial rate of 2 mgh 4 mLhr for the first 3 minutes. Thereafter, titration to higher infusion rates can be attempted as needed to obtain the target SBP goal 120 mmHg. Titration to effect is to proceed by doubling the dose every 3 minutes, up to a maximum of 32 mgh 64 mLhr, until the SBP 120 mmHg is attained. 