Assertion: opium's morphine | /r/ObjectUse | used with caution
Facets:
value: because of a possible vagolytic action
type: CAUSE
Source sentences:
text: Supraventricular Tachycardias - Because of a possible vagolytic action that may produce a significant increase in the ventricular response rate, morphine should be used with caution in patients with atrial flutter and other supraventricular tachycardias.