Spike on T wave! What went wrong?

Pasquale Crea; Giuseppe Picciolo; Teresa Crea; Francesco Luzza

doi:10.1016/j.jelectrocard.2016.09.009

Spike on T wave! What went wrong?

J Electrocardiol. 2017 Jan-Feb;50(1):139-141. doi: 10.1016/j.jelectrocard.2016.09.009. Epub 2016 Sep 24.

Authors

Pasquale Crea¹, Giuseppe Picciolo², Teresa Crea³, Francesco Luzza²

Affiliations

¹ Cardiology Unit, Department of Clinical and Experimental Medicine, University Hospital of Messina, Messina, Italy. Electronic address: [email protected].
² Cardiology Unit, Department of Clinical and Experimental Medicine, University Hospital of Messina, Messina, Italy.
³ Internal Medicine Unit, University Hospital of Messina, Messina, Italy.

PMID: 27707533
DOI: 10.1016/j.jelectrocard.2016.09.009

Abstract

An 80-year-old male, who previously received a dual chamber pacemaker, was referred to our ambulatory for dizziness and fatigue. The ECG obtained showed sinus rhythm, highly variable atrioventricular (AV) interval and alternation between spontaneous and paced ventricular complexes. A spike on the ascending part of the T wave was observed, suggesting ventricular undersensing. However, telemetry-supported pacemaker control showed inconstant atrial undersensing.

Keywords: Atrial undersensing; Dual chamber device; R on T; Ventricular undersensing.

Publication types

Case Reports

MeSH terms

Aged, 80 and over
Atrioventricular Block / complications
Atrioventricular Block / diagnosis*
Atrioventricular Block / prevention & control*
Cardiac Pacing, Artificial*
Dizziness / complications
Dizziness / diagnosis*
Electrocardiography / methods*
Equipment Failure*
Fatigue / complications
Fatigue / diagnosis*
Humans
Male