Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Kaplan-Meier curves showing time to a first occurrence of inappropriate ICD shock according to left atrial (LA) parameters (A–C) and history of atrial fibrillation (AF) prior to ICD implantation (D). The cutoff of LA maximum strain (Smax), pre-atrial contraction strain (SpreA), and absolute value of strain rate in LA contraction (SRa) were ≦20.6% (A), ≦14.6% (B), and ≦1.0 /s (C) for the lower group, respectively.
