Journals / Anadolu Kardiyoloji Dergisi / 2006 / Cilt: 6 - Sayı: 3

DDD pacing`li hastalarda programlanmış atriyoventriküler intervalin modifikasyonuna her iki ventrikülün benzer diyastolik fonksiyon adaptasyon paterni

Similar pattern of diastolic function adaptation of both ventricles to programmed atrioventricular interval modification in patients with DDD pacing

Pages
243–247
Publication Date
2022-10-10
DOI
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Conclusions: In elderly patients with complete heart block and unimpaired systolic function undergoing DDD pacemaker implantation, both ventricles share a similar pattern of diastolic function adaptation to AVI modifications and that might be the reflection of ventricular interaction under this specific pacing mode.

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Objective & Hypothesis:Objective: To evaluate both left ventricular (LV) and right ventricular (RV) diastolic performance adaptation to variable atrioventricular interval (AVI), in patients with DDD pacing for complete heart block and to investigate a possible interaction between LV and RV in this specific cohort of patients.
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Key Findings & Data:Methods: We studied 22 consecutive patients (mean age 65.2 ± 14.3) who underwent DDD pacemaker implantation following admission for complete heart block.
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Conclusion & Impact:Conclusions: In elderly patients with complete heart block and unimpaired systolic function undergoing DDD pacemaker implantation, both ventricles share a similar pattern of diastolic function adaptation to AVI modifications and that might be the reflection of ventricular interaction under this specific pacing mode.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: To evaluate both left ventricular (LV) and right ventricular (RV) diastolic performance adaptation to variable atrioventricular interval (AVI), in patients with DDD pacing for complete heart block and to investigate a possible interaction between LV and RV in this specific cohort of patients. Methods: We studied 22 consecutive patients (mean age 65.2 ± 14.3) who underwent DDD pacemaker implantation following admission for complete heart block. One day following implantation, patients were paced at 3 different pacing modes, under the same programmed heart rate and a different AVI (100, 150 and 200 ms respectively). Standard Doppler echocardiography of mitral and tricuspid valve inflow was performed to evaluate LV and RV diastolic function, during each pacing mode. Results: Left ventricular and RV diastolic performance adaptation to variable AVI modifications was similar, showing a progressive increase of late diastolic filling velocities and a subsequent decrease of E/A wave ratios following AVI prolongation. A short AVI of 100 or 150 ms was associated with improved LV and RV diastolic filling dynamics. Conclusions: In elderly patients with complete heart block and unimpaired systolic function undergoing DDD pacemaker implantation, both ventricles share a similar pattern of diastolic function adaptation to AVI modifications and that might be the reflection of ventricular interaction under this specific pacing mode.

Özet

Amaç: Bu çalışmanın amacı tam atriyoventriküler (AV) blok nedeni ile DDD pacemaker takılan hastalarda değişen AV interval'e (AVI) hem sol (LV) hem sağ (RV) ventrikül diyastolik fonksiyonların adaptasyonunu değerlendirmek ve bu spesifik hasta grubunda LV ile RV arasındaki olası etkileşimi araştırmaktır.Yöntemler: Tam AV blok nedeni ile kliniğe kabul sonrası DDD pacemaker implantasyonu yapılan 22 ardışık hasta (ortalama yaş 65.2 ± 14.3 yıl) çalışmaya alındıİmplantasyon'dan 1 gün sonra hastalar 3 farklı pacing modda aynı programlanmış kalp hızında ve farklı AVI de (100 ms, 150 ms ve 200 ms, sırası ile) pacing edildi. Her pacing modda, LV ve RV diyastolik fonksiyonları değerlendirmek amacı ile mitral ve triküspid akımları standart Doppler ekokardiyografi ile incelendi.Bulgular: Değişen AVI'lere LV ve RV diyastolik performansların adaptasyonu benzer idi, her AVI uzaması sonunda geç diyastolik doluş hızları progresif olarak artmıştır ve takiben E/a oranları azalmıştır. Kısa AVI (100 ms veya 150 ms) LV ve RV diyastolik doluş dinamiklerinin iyileşmesine neden olmuştur. Sonuçlar: Tam AV blok'lu ve korunmuş sistolik fonksiyonu olan DDD pacemaker takılan yaşlı hastalarda, her iki ventrikül AVI modifikasyonlara benzer diyastolik fonksiyonun adaptasyon paterni paylaşmaktadır ve bu spesifik pacing modda her iki ventrikülün etkileşiminin göstergesi olabilir.

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Cite This Article

STYLIADIS, I. H., PAPADOPOULOS, C. E., GOUZOUMAS, N. I., GIANNAKOULAS, G., KARVOUNIS, H. I., KARAMOUZIS, M., BOUFIDOU, A., PARHARIDIS, G. E. (2022). DDD pacing`li hastalarda programlanmış atriyoventriküler intervalin modifikasyonuna her iki ventrikülün benzer diyastolik fonksiyon adaptasyon paterni. Anadolu Kardiyoloji Dergisi, Cilt: 6 - Sayı: 3, 243–247. https://ajindex.com/articles/436763

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