Predictors of pacing induced left ventricular dysfunction and cardiomyopathy assessed by three-dimensional echocardiography and speckle tracking strain

The Egyptian Heart Journal

Table 2 Comparison between the two studied groups according STS reduction percentage at 1-week follow-up visit

	Total (n = 50)		No decline in LVEF(n = 25)		Decline in LVEF(n = 25)		Test of sig.	p
	No.	%	No.	%	No.	%	Test of sig.	p
% (7 days)
≤ 15	23	46.0	22	88.0	1	4.0	χ² = 29.639^*	< 0.001^*
> 15	27	54.0	3	12.0	24	96.0	χ² = 29.639^*	< 0.001^*