Resumo

OLAYA, Alejandro et al. First case in Colombia of cryoablation and high-density mapping in ventricular arrhythmia of the papillary muscle. Rev. Colomb. Cardiol. [online]. 2022, vol.29, n.3, pp.355-358.  Epub 01-Set-2022. ISSN 0120-5633.  https://doi.org/10.24875/rccar.m22000162.

Catheter ablation has become a practical approach for the treatment of cardiac arrhythmias, especially when optimal pharmacological management does not achieve adequate control of it, thus reducing hospital readmission and improving quality of life, even in patients in whom the complete resolution of the arrhythmia is not achieved. To date, a variety of modalities have been used, including radiofrequency and cryoablation. The principles of cryobiology were established for the first time with research on the freezing of tumors and current data suggest that a temperature of -30 to -40 °C is necessary to induce cell death either by immediate or delayed mechanisms; immediate as cellular rupture or hypothermic injury as well as vascular damage or apoptosis among the late. The first case in Colombia of high-density mapping and cryoablation is presented as combined strategies for the effective treatment of a patient with a high load of symptomatic ventricular arrhythmia originating in the anterolateral papillary muscle, without recurrence of the arrhythmia at the time of follow-up with symptoms, so it was to successful cryoablation, as the first case with this technique.

Palavras-chave : Catheter ablation; Papillary muscle; Intracardiac echocardiography; Ventricular premature contractions; Cryoablation.

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