Speckle tracking derived left and right ventricular strain, strain rate and

Abstract

Objectives: Aim of the study was to assess left and right ventricular strain, strain rate and left ventricular rotation in children at late follow-up after atrioventricular node slow pathway radiofrequency ablation. Materials and methods: Left and right ventricular strain, strain rate, left ventricular rotation, rotational ve-locity and twist were assessed using the speckle tracking echocardiography in 22 children who underwent radiofrequency ablation of slow pathway and in 15 healthy control children. Results: There were no significant differences in conventional echocardiographic left and right ventricular parameters between the two groups (p>0.05), except left atrial volume (28.0±8.7 ml in control group vs. 37.3±13.9 ml in radiofrequency ablation group, p=0.024) and right atrial volume (16.0±6.7 ml vs. 21.5±8.5 ml, respectively, p=0.047) and their left (16.7±6.0 ml/m2 vs. 26.3± 9.8 ml/m2, p=0.002, respectively) and right (16.0± 6.6 ml/m2 vs. 21.5±8.5 ml/m2, respectively, p=0.05) indices that were significantly higher in radiofrequency ablation group. Speckle tracking imaging derived regional and global strain, systolic and diastolic left and right ventricular strain rate as well as left ventricular rotation, rotational rate did not differ between the radiofrequency ablation group and controls (p>0.05). Left ventricular twist was comparable between the radiofrequency ablation group and controls (p>0.05). Conclusions: Speckle tracking echocardiography did not revealed any deterioration of regional and global long and short axis function of the left and right ventricles in children, who underwent atrioventricu-lar node slow pathway radiofrequency ablation.

Keywords

• Speckle tracking, radiofrequency ablation, children, echocardiography

Çocuklarda yavaş yol ablasyonu sonrası “Speckle tracking” ile elde edilen sol ve sağ ventriküler “strain”, “strain” hızı ve sol ventrikül rotasyonu

Öz

Amaç: Bu çalışmanın amacı, çocuklarda atriyoventriküler yavaş iletim yolu radyofrekans ablasyonu son-rası geç takip döneminde sol ve sağ ventiküler gerilme (strain), strain hızı ve sol ventrikül rotasyonunu değerlendirmektir. Gereç ve yöntemler: Radyofrekans ablasyonu uygulanan 22 çocuk ve sağlıklı 15 çocukta sol ve sağ ventriküler strain, strain hızı, sol ventrikül rotasyonu, rotasyonal hız ve burkulma (twist) “Specle tracking” ekokardiyografi ile değerlendirildi. Bulgular: Konvansiyonel ekokradiyografi ile iki grup arasında sol ve sağ ventrikül parametreleri bakımın-dan; sol atriyal hacim (28.0±8.7 ml kontrol grubunda ve 37.3±13.9 ml radyofrekans ablasyon grubunda, p=0.024) ve sağ atriyal hacim (sırasıyla, 16.0±6.7 ml ve 21.5±8.5 ml, p=0.047) ve bunların sol (16.7±6.0 ml/m2 ve 26.3± 9.8 ml/m2, p=0.002) ve sağ (16.0± 6.6 ml/m2 ve 21.5±8.5 ml/m2, p=0.05) indekslerinin radyofrekans ablasyonu grubunda daha yüksek olması (p=0.023) dışında, anlamlı farklılık yoktu (p>0.05). Bölgesel ve global strain\'den elde edilen “Spackle tracking” sistolik ve diyastolik sol ve sağ ventriküler strain hızı, sol ventriküler rotasyon ve rotasyonal hız radyofrekans ablasyon grubu ile kontrol grubu ara-sında anlamlı farklılık göstermedi (p>0.05). Sonuç: Speckle tracking ekokardiyografi atriyoventriküler düğüm yavaş yoluna radyofrekans ablasyonu uygulanmış çocuklarda sol ve sağ ventriküler bölgesel ve global uzun ve kısa eksen fonksiyonlarında herhangi bir bozulmayı göstermedi.

Anahtar Kelimeler

• “Specle tracking” ekokardiyografi, radyofrekans ablasyon, çocuklar, ekokardiyografi

Kaynakça

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