• The hemodynamic consequences of the rhythm abnormality should be assessed initially.
• Possible reversible causes should be sought and corrected (hypoxemia, hypokalemia, acidemia, digoxin toxicity, myocardial ischemia or infarction).
• Complete heart block is associated with a two- to fourfold increase in mortality when it occurs in the setting of coexisting coronary heart disease or heart failure.
• Initial atropine doses below 0.5 mg should not be used because they can precipitate a paradoxical slowing of heart rate due to their vagomimetic effect.
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