Under ECG monitoring (12 leads): 6 mg i.v. bolus + rincage with NaCl 0.9%, if failure, repeat 6mg, then 12mg, max 18 mg.
Second degree AV block, Complete AV block, asthma, WPW syndrome.
Conversion in sinus rhythm of supra-ventricular tachycardias (AVRT) and (AVNRT).