The field of atrial fibrillation is evolving rapidly. Although a medical rhythm control strategy has not proven to be beneficial for survival, new interventional therapies have improved the rate of ...

The placement of a permanent pacemaker is the definitive treatment for sinus node dysfunction, but not everyone needs this.

— G.W.T.Dear G.W.T.: The sinus of the heart has nothing to do with your nose as you might guess; it's a structure in the ...

Are you a refugee, asylum-seeker or stateless person looking for help? Visit the HELP site to find support and services from UNHCR. UNHCR’s work in Costa Rica focuses on responding to displacement ...

Inappropriate sinus tachycardia (IST) is an arrhythmia characterized by rapid sinus rates of over 100 bpm at rest. The mechanisms underlying this often-debilitating condition are not fully understood.

In these 2025 Advanced Life Support Guidelines, the American Heart Association provides comprehensive recommendations for the resuscitation and management of adults experiencing cardiac arrest, ...