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Table 2 Trials of acute haemodynamic response to biventricular pacing.

From: Temporary epicardial cardiac resynchronisation versus conventional right ventricular pacing after cardiac surgery: study protocol for a randomised control trial

Investigator Study title Sample Result
Breithardt [26], 2003. Acute effects of CRT on MR in systolic heart failure. N = 24
EF ≤ 30%
LBBB
Reduction in MR and improvement in dP/dT with BiV, p < 0.0001.
Leclerq [27], 1998. Acute haemodynamic effects of BiV in patients with end-stage heart failure. N = 18
NYHA ≥ 3
QRS ≥ 120
Increase in cardiac index BiV pacing v AAI, p < 0.001.
Aurrichio [28], 1999. Effect of pacing chamber and AV delay on acute systolic function of paced patients with heart failure. N = 27
NYHA ≥ 3
LBBB
Improvement in LV dP/dT with BiV pacing v DDD(RV) pacing, p < 0.01.
Kass [29], 1999. Improved LV mechanics from acute VDD pacing in patients with DCM and conduction delay. N = 18
QRS ≥ 120
Improvement in LV dP/dT with BiV pacing v AAI, p < 0.05.