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Image in Cardiology
Atrial tachycardia ablation in surgically treated congenital heart disease
Ablação de taquicardia auricular em cardiopatía congénita operada
Maria Emanuel Amarala,
Corresponding author
mariamanuelaamaral@gmail.com

Corresponding author.
, Pedro A. Sousab, Natália Antóniob,c, Miguel Venturab, João Cristovãob, Luís Elvasb
a Serviço de Cardiologia Pediátrica, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
b Departamento de Pacing e Eletrofisiologia, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
c Instituto de Farmacologia e Terapêutica Experimental, Faculdade de Medicina da Universidade de Coimbra, Portugal
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          "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Atrial pacing in the coronary sinus with double potential signal &#8805;100 ms&#46; The double potential was confirmed along the entire cavotricuspid isthmus&#46; ABL&#58; ablation catheter&#59; CS&#58; quadripolar catheter in the coronary sinus&#46;</p>"
        ]
      ]
    ]
    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">The authors describe the case of a 57-year-old woman with surgically treated superior vena cava sinus-venosus atrial septal defect who underwent an electrophysiology study with the CARTO<span class="elsevierStyleSup">&#174;</span> 3 mapping system &#40;Biosense Webster&#44; J&#38;J&#41; due to recurrent episodes of tachycardia&#46; The patient was found to be in narrow QRS-complex tachycardia&#44; with a cycle length of 310 ms and concentric activation sequence in the coronary sinus &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Figure 1A and 1B</a>&#41;&#44; suggesting atrial tachycardia &#40;AT&#41; originating from the right atrium &#40;RA&#41;&#46; High-density electroanatomical mapping of the RA was performed using the PentaRay catheter &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>C&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0010" class="elsevierStylePara elsevierViewall">The AT activation map &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>B&#41; indicated micro-reentry and centrifugal activation mainly on the lateral RA wall &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>B&#41;&#44; coinciding with the border zone of the scar &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>C&#41; and reveals &#8805;75&#37; of the tachycardia cycle on the PentaRay catheter &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Figure 2</a>A&#41;&#46; Radio frequency was applied with the SmartTouch ablation catheter in the initial activation region&#44; resulting in conversion to sinus rhythm &#40;SR&#41;&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">Under rapid atrial pacing&#44; tachycardia was again induced&#44; with a surface electrocardiogram indicative of counterclockwise atrial flutter with a cycle length of 380 ms &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Figure 1C and 1D</a>&#41; confirmed by activation and voltage remapping &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Figure 3A and 3B</a>&#41;&#46;</p><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">Cavotricuspid isthmus &#40;CTI&#41; ablation was performed resulting in conversion to SR&#46; Bidirectional block and the presence of double potential along the CTI line &#40;<a class="elsevierStyleCrossRef" href="#fig0020">Figure 4</a>&#41; were confirmed&#46;</p><elsevierMultimedia ident="fig0020"></elsevierMultimedia><p id="par0025" class="elsevierStylePara elsevierViewall">This case shows the advantages of using mapping in patients with congenital heart disease&#44; given that fibrosis in this context enables having several tachycardia circuits&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflicts of interest</span><p id="par0030" class="elsevierStylePara elsevierViewall">The authors have no conflicts of interest to declare&#46;</p></span></span>"
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    "fechaRecibido" => "2017-01-02"
    "fechaAceptado" => "2017-06-20"
    "NotaPie" => array:1 [
      0 => array:2 [
        "etiqueta" => "&#9734;"
        "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as&#58; Amaral ME&#44; Sousa PA&#44; Ant&#243;nio N&#44; et al&#46; Abla&#231;&#227;o de taquicardia auricular em cardiopat&#237;a cong&#233;nita operada&#46; Rev Port Cardiol&#46; 2018&#59;37&#58;271&#8211;275&#46;</p>"
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          "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">12-lead electrocardiogram &#40;A&#41; and intracavitary electrogram &#40;B&#41; of the clinical tachycardia&#46; The tachycardia cycle length is 310 ms with a concentric activation sequence in the coronary sinus &#40;CS 3-4 &#8594; CS 1-2&#41;&#46; 12-lead electrocardiogram &#40;C&#41; and intracavitary electrogram &#40;D&#41; in counterclockwise atrial flutter&#46; The baseline tachycardia cycle length is 380 ms&#46; ABL&#58; ablation catheter&#59; CS&#58; quadripolar catheter in the coronary sinus&#46;</p>"
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Intracavitary electrograms in the coronary sinus catheters &#40;CS 1-2 and CS 3-4&#41;&#44; mapping catheters &#40;P 1-2 to P 19-20&#41; and SmartTouch ablation catheters &#40;MAP 1-2 and MAP 3-4&#41; &#40;A&#41;&#46; PentaRay mapping catheter revealed &#8805;75&#37; of the tachycardia cycle &#40;from bipole P 1-2 to bipole P 11-12&#41;&#44; compatible with a micro-reentry circuit&#46; RA anatomy was mapped using the pentapolar PentaRay catheter &#40;Biosense Webster&#44; J&#38;J&#41;&#44; which enables faster anatomy mapping due to its 20 electrodes&#46; A SmartTouch ablation catheter &#40;Biosense Webster&#44; J&#38;J&#41; with contact sensor was selected to ensure good contact with the dilated right atrium&#46; Both the activation &#40;B&#41; and voltage &#40;C&#41; maps of the clinical atrial tachycardia were acquired using Confidence software&#44; which automatically records points&#46; The locations with voltage &#8804;0&#46;1 mV were defined as scar &#40;colored red&#41; in the voltage map &#40;C&#41;&#46;</p>"
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        "etiqueta" => "Figure 3"
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          "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Activation &#40;A&#41; and voltage &#40;B&#41; maps of the second tachycardia&#46; Presence of the entire tachycardia cycle around the tricuspid valve annulus&#46; The red points correspond to the cavotricuspid isthmus line made by RF&#46;</p>"
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ISSN: 21742049
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Revista Portuguesa de Cardiologia (English edition)
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