Left atrial function after Cox's maze operation concomitant with mitral valve operation

Itoh, Toshiaki; Okamoto, Hiroshi; Nimi, Takao; Morita, Shin; Sawazaki, Masaru; Ogawa, Yutaka; Asakura, T; Yasuura, K; Abe, Toshio; Murase, M

doi:10.1016/0003-4975(95)00184-m

Cited by 46 publications

(14 citation statements)

References 17 publications

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“…Nonetheless, these findings suggest that patients with excessively large atria might regain SR, but not atrial transport function. This is in accordance with Itoh and colleagues [25], who emphasised that for the original Cox Maze operation left atrial dilatation seems to have negative effects on atrial contraction.…”

Section: Discussionsupporting

confidence: 87%

Microwave and radiofrequency ablation yield similar success rates for treatment of chronic atrial fibrillation1

Wisser

Khazen

Deviatko

et al. 2004

European Journal of Cardio-Thoracic Surgery

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Section: Discussionsupporting

confidence: 87%

Microwave and radiofrequency ablation yield similar success rates for treatment of chronic atrial fibrillation1

Wisser

Khazen

Deviatko

et al. 2004

European Journal of Cardio-Thoracic Surgery

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“…There have been a number of studies on the effects of the Cox maze procedure on atrial function 15,24-30. Most of these studies have shown that the procedure negatively affects atrial function.…”

Section: Discussionmentioning

confidence: 99%

The effects of the Cox maze procedure on atrial function

Voeller

Zierer

Lall

et al. 2008

The Journal of Thoracic and Cardiovascular Surgery

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Objective The effects of the Cox maze procedure on atrial function remain poorly defined. The purpose of this study was to investigate the effects of a modified Cox maze procedure on left and right atrial function in a porcine model. Methods After cardiac magnetic resonance imaging, 6 pigs underwent pericardiotomy (sham group), and 6 pigs underwent a modified Cox maze procedure (maze group) with bipolar radiofrequency ablation. The maze group had preablation and immediate postablation left and right atrial pressure–volume relations measured with conductance catheters. All pigs survived for 30 days. Magnetic resonance imaging was then repeated for both groups, and conductance catheter measurements were repeated for the right atrium in the maze group. Results Both groups had significantly higher left atrial volumes postoperatively. Magnetic resonance imaging–derived reservoir and booster pump functional parameters were reduced postoperatively for both groups, but there was no difference in these parameters between the groups. The maze group had significantly higher reduction in the medial and lateral left atrial wall contraction postoperatively. There was no change in immediate left atrial elastance or in the early and 30-day right atrial elastance after the Cox maze procedure. Although the initial left atrial stiffness increased after ablation, right atrial diastolic stiffness did not change initially or at 30 days. Conclusions Performing a pericardiotomy alone had a significant effect on atrial function that can be quantified by means of magnetic resonance imaging. The effects of the Cox maze procedure on left atrial function could only be detected by analyzing segmental wall motion. Understanding the precise physiologic effects of the Cox maze procedure on atrial function will help in developing less-damaging lesion sets for the surgical treatment of atrial fibrillation.

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“…The LA size is an independent predictor factor for thromboembolism [7] and for morbidity and mortality [8].…”

Section: Discussionmentioning

confidence: 99%

Initial experience with Pomerantzeff´s technique for reduction of the size of giant left atrium

Sousa¹,

Pomerantzeff²,

Brandão³

et al. 2012

Rev Bras Cir Cardiovasc

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Left atrial function after Cox's maze operation concomitant with mitral valve operation

Cited by 46 publications

References 17 publications

Microwave and radiofrequency ablation yield similar success rates for treatment of chronic atrial fibrillation1

Microwave and radiofrequency ablation yield similar success rates for treatment of chronic atrial fibrillation1

The effects of the Cox maze procedure on atrial function

Initial experience with Pomerantzeff´s technique for reduction of the size of giant left atrium

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