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

Dawood, Moustafa; Elsharkawy, Eman; Abdel-Hay, Mohamed Ayman; Nawar, Moustafa

doi:10.1186/s43044-021-00136-x

The Egyptian Heart Journal

Table 1 Comparison between the three studied groups according to echo parameters and GLS

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

Predisposing factors	No decline in LVEF (n = 25)		Decline in LVEF				χ²	^MCp
Predisposing factors	No decline in LVEF (n = 25)		PIVD (n = 19)		PICMP(n = 6)
	No.	%	No.	%	No.	%
EF%
Pre-pacing	68.0 ± 6.84		75.79 ± 5.27		68.33 ± 9.83		7.856^*	0.001^*
Post-pacing (at 7 days)	64.16 ± 7.64		67.74 ± 8.19		47.83 ± 6.79		15.105^*	< 0.001^*
Post-pacing (at 6 months)	61.76 ± 6.22		57.79 ± 4.38		36.0 ± 10.79		40.815^*	< 0.001^*
ESV (ml)
Pre-pacing	34.12 ± 11.94		26.53 ± 8.52		34.0 ± 10.08		3.031	0.058
Post-pacing (at 7 days)	30.84 ± 10.59		28.21 ± 12.09		46.33 ± 5.82		6.562	0.003^*
Post-pacing (at 6 months)	34.36 ± 9.81		37.53 ± 11.55		73.50 ± 35.49		16.313^*	< 0.001^*
EDV (ml)
Pre-pacing	104.8 ± 25.81		104.7 ± 23.58		111.3 ± 25.87		0.342	0.843
Post-pacing (at 7 days)	89.40 ± 22.49		89.26 ± 22.92		93.67 ± 24.48		0.081	0.960
Post-pacing (at 6 months)	90.84 ± 22.22		89.0 ± 24.47		111.8 ± 40.35		1.222	0.543
SV (ml)
Pre-pacing	70.64 ± 17.70		77.11 ± 17.32		77.33 ± 27.52		0.748	0.479
Post-pacing (at 7 days)	58.48 ± 16.12		61.05 ± 17.22		47.33 ± 19.36		1.512	0.231
Post-pacing (at 6 months)	56.44 ± 15.36		51.68 ± 14.29		38.33 ± 13.09		3.700	0.032
COP (L/min)
Pre-pacing	2.96 ± 0.87		3.32 ± 1.05		2.63 ± 0.74		3.722	0.156
Post-pacing (at 7 days)	3.90 ± 0.95		4.39 ± 1.43		3.60 ± 1.21		1.715	0.424
Post-pacing (at 6 months)	3.70 ± 0.92		3.72 ± 1.38		2.72 ± 0.69		4.754	0.093
GLS%
Pre-pacing	− 19.52 ± 3.62		− 20.79 ± 3.43		− 15.50 ± 2.07		5.482^*	0.007^*
Post-pacing (at 7 days)	− 16.80 ± 3.59		− 14.21 ± 4.21		− 10.17 ± 1.17		8.609	0.001^*
Post-pacing (at 6 months)	− 15.40 ± 3.46		− 12.32 ± 4.60		− 8.0 ± 2.76		9.888	< 0.001^*

*Statistically significant at p ≤ 0.05

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