Left atrial contraction strain during a Valsalva manoeuvre, a study in healthy humans.

The Valsalva manoeuvre, a combination of preload reduction and a sympathetic nervous system activation, seems not to be associated with a change left atrial contraction strain in healthy young individuals. Left atrial contraction strain should be interpreted in the context of both atrial loading conditions and prevailing autonomic nerve system activity. This article is protected by copyright. All rights reserved.