Bradycardia is having a heart rate of <60 beats/minute that may not affect the hemodynamic status of some patients.
A heart rate that is
inadequate for the patient's current condition and may not be able to
support life is a clinically significant bradycardia.
Bradycardia can be caused by problems in the sinoatrial node, problems in the conduction pathways of the heart, metabolic problems or heart attack/disease that caused damage to the heart.
The different types of bradycardia are sinus bradycardia, sick sinus syndrome, tachycardia-bradycardia syndrome, hypersensitive carotid sinus syndrome, sinus pause/arrest, sinoatrial node exit block and atrioventricular block.
In adult cardiac arrest (CA) patients treated with targeted temperature management (TTM), male sex, bystander cardiopulmonary resuscitation (CPR) and the presence of initial shockable rhythm all correlate with greater chances of favourable neurological outcomes, a recent meta-analysis has shown.