sinus node dysfunction


Also found in: Acronyms.

sinus node dysfunction

any disturbance in the normal functioning of the sinus node, such as slow sinus rate or sinoatrial block, that leads to the development of arrhythmias.

sinus node dysfunction

Cardiology A disturbance, impairment or defect in the behavior of the sinoatrial/SA node. See Sick sinus syndrome.
References in periodicals archive ?
One patient required a permanent pacemaker for sinus node dysfunction and a persistently prolonged [QT.
The exercise can also assess the type and severity of sinus node dysfunction present, based on the heart rate and rhythm response to the stress.
Certain endocrine problems, most commonly hypothyroidism (underactive thyroid), can imitate sinus node dysfunction, and therefore blood tests to assess the thyroid are usually performed in the workup
In the standard group implantable cardioverter defibrillator (ICD) implantation was applied to one patient due to the sinus node dysfunction the permanent pace and to one patient due to the ventricular tachycardia attacks.
Sinus node dysfunction is one of the reasons of morbidity after orthotopic heart transplantation.
Similarly, during RCA percutaneous interventions, distal embolization of plaque components after balloon inflation and stent implantation may cause sinus node dysfunction, severe bradycardia, which are mostly expected to occur during proximal RCA interventions as a consequence of plaque shifting into a proximally located SAN artery.
Lexiscan should not be administered to patients with second- or third-degree AV block or sinus node dysfunction who do not have a functioning artificial pacemaker.
ECRI published its systematic review as a Windows on Medical Technology(TM) evidence report in March 2005: "Dual-Chamber versus Single-Chamber Pacemakers for Sinus Node Dysfunction and Atrioventricular Block.
Sinus node dysfunction had its own image on the RCGm--there were supracompensative pauses after extrasystole, Wenckebach's or Mobitz's periodics.
Kuck implanted the dual-chamber rate-responsive Integrity(TM) Micro AutoCapture(TM) Pacing System DR (Model 5336) in a 77-year old male patient with first-degree AV block and sinus node dysfunction.