Situs inversus totalis: A challenge for cardiac resynchronization therapy

Sebastián Peñaloza; Marcelo Godoy; Rodrigo Miranda

doi:10.1111/pace.14819

Situs inversus totalis: A challenge for cardiac resynchronization therapy

Pacing Clin Electrophysiol. 2024 May;47(5):688-690. doi: 10.1111/pace.14819. Epub 2023 Sep 12.

Authors

Sebastián Peñaloza¹, Marcelo Godoy², Rodrigo Miranda¹

Affiliations

¹ Department of Internal Medicine, School of Medicine, Universidad de La Frontera, Temuco, Chile.
² Department of Medical Specialties, School of Medicine, Universidad de La Frontera, Temuco, Chile.

PMID: 37697948
DOI: 10.1111/pace.14819

Abstract

Situs inversus totalis (SIT) is a congenital condition in which the major visceral organs are reversed or in a mirror image from their normal positions that affects one per 10,000 live births. It is associated with dextrocardia (DXC) in which the heart is located on the right side of the chest. We present a challenging cardiac resynchronization therapy (CRT) implantation in a 60-year-old man with SIT-DXC, heart failure, extreme bradycardia, wide QRS, and left ventricular (LV) dysfunction. The procedure was complex due to the mirror-image anatomy and the tortuous origin of the coronary sinus (CS) branches that required a subselection catheter for adequate lead implantation.

Keywords: cardiac resynchronization therapy; dextrocardia; situs inversus totalis.

Publication types

Case Reports

MeSH terms

Cardiac Resynchronization Therapy* / methods
Dextrocardia / complications
Dextrocardia / diagnostic imaging
Heart Failure* / therapy
Humans
Male
Middle Aged
Situs Inversus* / complications
Situs Inversus* / therapy
Treatment Outcome