tachycardia
sinus tachycardia, SVT, VT, AF, atrial flutter
causes of sinus tachycardia
dehydration/hypovolaemic, fever, hypoxic, hyperthyroid, hypocalcaemia, shock, anaemia, MI
bradycardia
sinus bradycardia, sick sinus syndrome, increased vagal tone (sedatives, cholinergic medication), AV nodal block (inflammation, congenital heart defects), medication
what medication can cause bradycardia
digoxin, lithium, b blockers
causes of sinus bradycardia
hypothyroid, hypothermia, malnutrition, hypokalaemia, anorexia nervosa, hypoxic