Journals / Tanısal ve Girişimsel Radyoloji (Yeni Adı: Dİagnostic & Intervent. Radiol) / 2004 / Cilt: 10 - Sayı: 1

Evaluation of early hemodynamic changes in the carotid arteries after permanent pacemaker implantation with color Doppler US

Kalıcı "pacemaker" sonrası karotid arterlerde erken hemodinamik değişimlerin renkli Doppler US ile değerlendirilmesi

Pages
31–35
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

However, flow volumes of the carotid arteries did not change after pacemaker and we concluded that the early neurological dysfunction would not be associated with the functional failure of the carotid arteries.

📌 3 Key Takeaways

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Objective & Hypothesis:PURPOSE: Both carotid arteries of the patients were examined with color Doppler ultrasonography before and after the placement of a permanent pacemaker, and the results were discussed.
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Key Findings & Data:MATERIALS AND METHODS: Twelve patients with pacemaker indication aged between 19-81 years were included in the study.
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Conclusion & Impact:However, flow volumes of the carotid arteries did not change after pacemaker and we concluded that the early neurological dysfunction would not be associated with the functional failure of the carotid arteries.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Ultrasonografi · doppler · renkli

Abstract

PURPOSE: Both carotid arteries of the patients were examined with color Doppler ultrasonography before and after the placement of a permanent pacemaker, and the results were discussed. MATERIALS AND METHODS: Twelve patients with pacemaker indication aged between 19-81 years were included in the study. The day before and after pacemaker implantation, maximum systolic velocity, end diastolic velocity, mean velocity, resistivity index and pulsatility index of the bilateral carotid arteries were measured. Area measuring and flow volume were calculated by using the transverse imaging of the same points of carotid arteries. Statistical analysis of the data was made with paired samples t-test. RESULTS: Heart rates of the patients were statistically higher before pacemaker implantation (p<0.001). Maximum systolic velocity of bilateral common carotid arteries, left internal carotid artery and right internal carotid artery decreased significantly after pacemaker implantation (respectively p<0.01, p<0.01, and p<0.05). We also found prominent decrease in maximum systolic velocity of both external carotid arteries after pacemaker implantation (p<0.05). End diastolic velocity, mean velocity, area and the flow volume of the carotid arteries did not change markedly. Resistivity and pulsatility index values of bilateral common and internal carotid arteries decreased significantly after pacemaker implantation (p<0.05). CONCLUSION: Decrease in maximum systolic velocity of the carotid arteries after pacemaker implantation may be due to the possible reduction in cardiac output or the treatment of bradycardia. However, flow volumes of the carotid arteries did not change after pacemaker and we concluded that the early neurological dysfunction would not be associated with the functional failure of the carotid arteries.

Özet

AMAÇ Çalışmamızda "pacemaker" takılan hastaların her iki taraf karotid arterleri, (pace maker) takılmadan önce ve takıldıktan sonra renkli Doppler ultrasonografi (RDUS) ile incelendi ve sonuçlar karşılaştırıldı. GEREÇ VE YÖNTEM (Pacemaker) endikasyonu ile hastaneye yatırılan 19-81 yaş arası 20 hasta çalışmaya alındı. Hastaların 7'sine atrioventriküler tam blok, 5'ine sinüzal bradikardi, 4'üne hasta sinüs sendromu, 2'sine 2. derece atrioventriküler blok ve 2'sine de 1. derece atrioventriküler blok tanısı konuldu. Hastalar (pacemaker) takılmadan önce ve takıldıktan bir gün sonra olmak üzere iki kez, her iki taraf karotid arterleri RDUS ile incelemeye alındı. Elde edilen Doppler spektrumdan maksimum sistolik hız, diastol sonu hız, ortalama hız, rezistivite indeksi ve pulsatilite indeksi hesaplandı. Karotid arterlerin aynı noktalardaki transvers görüntülerinden alan ölçümleri yapıldı ve akım hacmi hesaplandı. Elde edilen verilerin karşılaştırılması eşleştirilmiş t-testi ile yapıldı. BULGULAR Hastaların kalp hızları (pacemaker) sonrasında, öncesine göre anlamlı derecede yüksek bulundu (p<0.001). Her iki taraf ana karotid arter, sol internal karotid arter ve sağ internal karotid arterde (pacemaker) sonrası öncesine göre maksimum sistolik akım hızlarında anlamlı olarak düşüş mevcuttu (sırasıyla p<0.01, p<0.01 ve p<0.05). Yine her iki taraf eksternal karotid arter maksimum sistolik akım hızlarının (pacemaker) sonrasında düştüğü gözlendi (p<0.05). Karotid arterlerinin diastol sonu ve ortalama hızları ile alan ve akım hacimlerinde (pacemaker) sonrası değişiklik saptanmadı. Her iki taraf ana karotid arter ve internal karotid arterde resistivite ve pulsatilite indekslerinin (pacemaker) sonrasında istatistiksel olarak anlamlı derecede düştüğü gözlendi (p<0.05). SONUÇ (Pacemaker) sonrası karotid arterlerindeki sistolik akım hızlarındaki düşüşler, olası kardiyak "output" düşüşüne ya da bradikardinin düzelmesine bağlı olabilir. Bunun yanında, karotid arterlerinin akım volümlerinde (pacemaker) sonrasında değişim olmaması nedeni ile, (pacemaker) sonrası erken dönemde oluşabilecek nörolojik fonksiyon bozukluklarının karotid arterlerinin fonksiyonel bozukluğuna ait olamayacağı düşünüldü.

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Cite This Article

ÖZER, T., ARDA, K. N., SOYLU, M., DEMİR, D., ÖLÇER, T., ŞAŞMAZ, A. (2004). Evaluation of early hemodynamic changes in the carotid arteries after permanent pacemaker implantation with color Doppler US. Tanısal ve Girişimsel Radyoloji (Yeni Adı: Dİagnostic & Intervent. Radiol), Cilt: 10 - Sayı: 1, 31–35. https://ajindex.com/articles/363192

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