Changes in pulse pressure variability during cardiac resynchronization therapy in mechanically ventilated patients

Table 2 Hemodynamic variables during right ventricular and biventricular pacing

	Right ventricular pacing	Biventricular pacing	P value
R-R interval (milliseconds)	864 ± 94	864 ± 93	0.94
Systolic blood pressure (mm Hg)	98 ± 18	100 ± 18	0.35
Mean blood pressure (mm Hg)	75 ± 13	75 ± 14	0.75
Diastolic blood pressure (mm Hg)	65 ± 13	64 ± 13	0.88
Pulse pressure (mm Hg)	33 ± 10	35 ± 11	0.08
Respiratory systolic blood pressure variability (ln mm Hg²)	-0.57 ± 1.42	-0.17 ± 1.37	0.002
Respiratory pulse pressure variability (ln mm Hg²)	-1.27 ± 1.74	-0.66 ± 1.48	0.002
Pulse pressure variation (percentage)	5.3 (3.1; 12.3)	6.9 (4.7; 16.4)	0.008

Data are reported as mean ± standard deviation or as median (25th percentile; 75th percentile). Results of power spectral analysis are logarithmically transformed.

ISSN: 1364-8535