Left ventricular speckle tracking guidance in DDD pacemaker optimization | ||||
| Zagazig University Medical Journal | ||||
| Article 11, Volume 29, Issue 4, July and August 2023, Page 1059-1063 PDF (404.76 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/zumj.2022.166558.2654 | ||||
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| Authors | ||||
Shimaa Gamal ZeinElabdeen   1; Mohammed H. Soliman2; Mohamed Mohsen Mohamed3; Mahmoud Abdelaziz Abdelrashid4
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| 1cardiology department, faculty of medicine, zagazig university, sharkia Egypt | ||||
| 2Faculty of Medicine, Zagazig University, Cardiology department, Sharkia Egypt | ||||
| 3Cardiology department,faculty of medicine, ZUH, zagazig, egypt | ||||
| 4lecturer of cardiology department ,zagazig university | ||||
| Abstract | ||||
| Background: Different strategies have been investigated for optimization of atrioventricular (AV) synchrony in patients with dual chamber pacemakers (DDD), which has a crucial role in preserving an effective cardiac output. However, no consensus on the best modality in the shadow of interventricular dyssynchrony induced by right ventricular pacing which eventually worsens long-term cardiac performance. Aim: To utilize the Left ventricular 2D speckle tracking strain parameters as a new tool guiding atrioventricular delay (AVD) synchronization in patients with DDD pacemaker to achieve the best LV systolic performance. Methods: This interventional cross-over study involved 255 patients with DDD pacemakers, with mean age 50.62 ± 7.03 years, 175 of them were males 68.6% and 80 were females 31.4%. Each device was programmed to 4 different AV intervals, at one-week interval each; (AVpacing /AV sensenig):120/100 ,150/130 ,180/160, 200/180 msec). Conventional echocardiographic parameters & left ventricular (LV) 2D speckle tracking (ST) strain were interrogated. Results: At relatively prolonged AVD (180/160 msec), both LV longitudinal strain and left ventricular outflow tract velocity time integral (LVOT VTI) were significantly improved (18.11±1.35 & 27.19 ± 3.16 respectively with P | ||||
| Keywords | ||||
| Dual chamber pacemaker; AV interval optimization; LV longitudinal strain; Speckle tracking | ||||
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