In response to RCO , mean arterial pressure and SBP increased in HF compared with CTLs ( 6.8 5.8 % vs -3.0 7.8 % , P < .01 and 3.4 6.4 % vs -12.7 10.4 % , P < .01 , respectively ) , with no difference in diastolic pressure ( P = .61 ) .