Routine exercise testing could not predict T-wave oversensing in a patient after a subcutaneous implantable cardioverter-defibrillator implant

Shozo Konishi; Hitoshi Minamiguchi; Kentaro Ozu; Hiroya Mizuno; Shungo Hikoso; Osamu Yamaguchi; Yasushi Sakata

doi:10.1002/ccr3.1345

Routine exercise testing could not predict T-wave oversensing in a patient after a subcutaneous implantable cardioverter-defibrillator implant

Clin Case Rep. 2017 Dec 22;6(2):309-313. doi: 10.1002/ccr3.1345. eCollection 2018 Feb.

Authors

Shozo Konishi¹, Hitoshi Minamiguchi¹, Kentaro Ozu¹, Hiroya Mizuno¹, Shungo Hikoso¹, Osamu Yamaguchi¹, Yasushi Sakata¹

Affiliation

¹ Department of Cardiovascular Medicine Osaka Graduate School of Medicine Suita Japan.

Abstract

Subcutaneous implantable cardioverter-defibrillators (S-ICDs) are susceptible to T-wave oversensing (TWOS) caused by high rate-dependent QRS-T morphology changes. We experienced an inappropriate S-ICD shock due to TWOS, which could not be predicted by routine exercise testing. A newly available high-pass filter might be effective for avoiding this.

Keywords: Exercise test; T‐wave oversensing; subcutaneous implantable cardioverter‐defibrillator.

Publication types

Case Reports