Assertion: beta blocker | /r/CapableOf | reduce the oxygen demand of the heart
Facets:
value: by slowing the heart rate
type: MANNER
Source sentences:
text: By slowing the heart rate, beta blockers reduce the oxygen demand of the heart and reduce the frequency of angina attacks
text: By slowing the heart rate, beta blockers reduce the oxygen demand of the heart and reduce the frequency of angina attacks.