Abstract | OBJECTIVES: METHODS: In 43 CABG patients [mean age 69.5 ± 1.3 years; ejection fraction (EF) 49 ± 2%] with AF, we analysed coronary vascular resistances (CVRs) and the contemporary changes in the BGF obtained during right ventricular outflow tract (RVOT), right- (RV), left- (LV) and right-left ventricular pacing (biventricular pacing, BiVP) using the ultrasonic transit-time methodology. RESULTS: BiVP resulted in the highest percentage decrease of CVR in the overall study group by 17.5 ± 3.0% (P < 0.001), followed by RVOT pacing with 13.9 ± 3.9%. Accordingly, the highest mean BGF was achieved during BiVP, resulting in a 21.6 ± 2.6% increase when compared with no pacing and 16 ± 3.7% when compared with RV pacing. Analysis of patients according to their preoperative LV function (EF ≥50%, n = 26; EF <50%, n = 17) showed significantly lower CVR (P < 0.037) and higher BGF during BiVP in patients with lower EF. CONCLUSIONS: Placement of an additional LV pacing wire offered a significant improvement in BGF by minimizing CVR in patients with AF and poor EF.
|
Authors | Navid Madershahian, Maximilian Scherner, Carolyn Weber, Elmar Kuhn, Yeong-Hoon Choi, Ingo Slottosch, Thorsten Wahlers |
Journal | Interactive cardiovascular and thoracic surgery
(Interact Cardiovasc Thorac Surg)
Vol. 21
Issue 4
Pg. 435-40
(Oct 2015)
ISSN: 1569-9285 [Electronic] England |
PMID | 26109629
(Publication Type: Journal Article)
|
Copyright | © The Author 2015. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved. |
Topics |
- Aged
- Aged, 80 and over
- Atrial Fibrillation
(complications)
- Blood Vessel Prosthesis
- Cardiac Resynchronization Therapy
- Coronary Artery Bypass
- Coronary Artery Disease
(complications, physiopathology, surgery)
- Coronary Circulation
- Coronary Vessels
(physiopathology)
- Female
- Humans
- Male
- Stroke Volume
- Vascular Resistance
|