Published online Jun 26, 2020. doi: 10.4330/wjc.v12.i6.269
Peer-review started: February 26, 2020
First decision: April 25, 2020
Revised: May 3, 2020
Accepted: May 26, 2020
Article in press: May 26, 2020
Published online: June 26, 2020
Core tip: Cardiac catheterization is the most performed invasive procedure in the current healthcare system. Cardiac arrhythmias are common complications during the procedure. This review demonstrated a 0.14%-0.3% incidence of transient right bundle branch block during right heart catheterization in normal individuals, and a significantly higher risk of complete heart block (up to 6.3%) for individuals with pre-existing left bundle brunch block. Potentially life-threatening ventricular arrhythmias requiring either withdrawal of catheter or cardioversion could occur at the rates of 1%-1.3%. The incidence of significant arrhythmias during left heart catheterization has reduced by about 10 folds in the past half century, from 1.1% to 0.1%. Coronary interventions, as well as intracoronary imaging and measuring fractional flow reserve, carry increased risk of malignant arrhythmias, including up to 1% incidence of ventricular fibrillations. Constant telemetry monitoring is essential during cardiac catheterization.