Assertion: pacemaker's lead | /r/HasProperty | affixed to the heart muscle
Facets:
Source sentences:
text: Placing a pacemaker: Pacing leads (one to three) are positioned through the vein under the collarbone (subclavian vein) into the heart chambers and affixed to the heart muscle.
text: Pacing leads (1,2 or 3) are positioned through the collarbone vein into the heart chambers and affixed to the heart muscle.