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. Author manuscript; available in PMC: 2009 May 4.
Published in final edited form as: Prog Biophys Mol Biol. 2008 Mar 5;97(2-3):543–561. doi: 10.1016/j.pbiomolbio.2008.02.024

Table 1.

Canine hemodynamic data for LBBB and CRT

Pre-LBBB Acute LBBB 8 weeks LBBB Acute BVP 8 weeks LBBB + 8 weeks BVP
Heart rate (bpm) 89±9 95±9 82±11 90±12 92±10
QRS duration (ms) 69±8 119±9a 123±11a 108±8a,b 102±9a,b
LV SP (mmHg) 105±4 100±5 111±4 116±3 101±4
LV EDP (mmHg) 8±3 6±2 7±4 8±5 6±3
LV dP/dtmax (mmHg/s) 2263±671 1777±373a 1798±490a 2003±580a,b 2160±509b
LV dP/dtmin (mmHg/s) 2360±296 1988±412a 1616±274a 1871±270a,b 2021±342c
RV SP 27±5 33±7 25±7 30±7 27±4
RV EDP 4±2 4±2 4±2 6±2 4±1
RV dP/dtmax 458±138 527±227 408±176 487±236 556±227
RV dP/dtmin 334±159 309±153 264±113 313±118 309±134

LV dP/dtmax: maximal rate of increase in left ventricular (LV) pressure; LV SP: LV systolic pressure; LV EDP: LV end-diastolic pressure. Values are presented as mean ± SD.

a

p<0.05 compared to pre-LBBB.

b

p<0.05 compared to 8 weeks’ LBBB.

c

p<0.05 vs. acute BVP.