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Table 4 Spearman's rho correlation between ΔLV SF and increase of paced vs intrinsic QRS duration.

From: Mid-term echocardiographic follow up of left ventricular function with permanent right ventricular pacing in pediatric patients with and without structural heart disease

 

Mean ΔLV SF (%)

Mean ΔQRS (ms)

ρ

p

Overall

-0.01 ± 0.12

65.9 ± 25.6

-0.175

NS

ICAVB

-0.02 ± 0.1

71.4 ± 21.6

-0.006

NS

CCHD

-0.04 ± 0.12

54.2 ± 30.2

-0.08

NS

ISHD

0.01 ± 0.15

65 ± 26

-0.349

NS

  1. ΔLV SF – change of left ventricular shortening fraction
  2. ΔQRS – change of paced QRS duration after pacemaker implantation vs intrinsic
  3. QRS duration before pacemaker implantation
  4. CCHD – patients with complex congenital heart disease
  5. ICAVB – patients with isolated congenital complete or advanced AV block
  6. ISHD – patients with isolated structural heart disease
  7. NS – not significant
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Cardiovascular Ultrasound

ISSN: 1476-7120

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