R-R interval and modification of cardiac output following cardiac surgery: the importance of heart rate optimisation by external pace maker

Intensive Care Medicine Experimental

Table 1

Surgery	RR vs CI	LV t-IVT vs CI	LV t-IVT vs CO	LV t-FT vs HR	LV t-ET vs HR
Aortic 11 pts	p 0.065 r -0.28	p < .0001 r -0.69	p < .0001 r -0.83	p <0.001 r 0.72	p <0.001 r 0.72
Mitral 4 pts	p 0.006 r -0.63	p < .0001 r -0.60	p < .0001 r -0.86	p <0.46 r -0.18	p <0.001 r 0.83
CABG 6 pts	p 0.47 r -0.16	p < .0001 r -0.77	p < .0001 r -0.91	p < .021 r -0.5	p <0.09 r 0.37
Right 3 pts	p 0.81 r -0.07	p < .0001 r -0.92	p < .0001 r -0.77	p <0.001 r -0.86	p <0.005 r 0.77