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Medicina crítica (Colegio Mexicano de Medicina Crítica)

Print version ISSN 2448-8909

Abstract

GUZMAN CARRERA, Luz Alejandra; GUZMAN CARRERA, Mariana Irais  and  MUZQUIZ VARGAS, Adriana Maribel. Pacemaker implantation through the persistent left superior vena cava due to the absence of the right superior vena cava. Report of a case. Med. crít. (Col. Mex. Med. Crít.) [online]. 2023, vol.37, n.1, pp.52-55.  Epub Sep 30, 2023. ISSN 2448-8909.  https://doi.org/10.35366/109964.

Introduction:

the persistence of the left superior vena cava (PLSVC) has a prevalence of 0.21% in the general population.

Case presentation:

67-year-old male diagnosed with third-degree AV block, requiring pacemaker placement. However, due to the absence of a right superior vena cava, corroborated by CT angiography, a definitive pacemaker was placed through a persistent left superior vena cava.

Conclusion:

the persistence of the left superior vena cava (PLSVC) is the most common thoracic venous anomaly. It can cause a number of clinically significant symptoms, even in a heart with normal anatomy. Pacemaker placement makes electrode fixation difficult due to tortuous travel.

Keywords : persistence of left superior vena cava; pacemaker; third-degree atrioventricular block.

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