Prasad N, Ali H, Schwartz L
Division of Cardiology, The Toronto Hospital, Canada.
Catheter Cardiovasc Interv. 1999 Apr;46(4):421-4. doi: 10.1002/(SICI)1522-726X(199904)46:4<421::AID-CCD6>3.0.CO;2-5.
During coronary stent deployment there is a risk of compromising side branches, which can result in chest pain. Compromised side branches can be reopened by balloon angioplasty through the side of the stent. In a consecutive series of 10 patients with side-branch compromise and chest pain, balloon angioplasty through the side of the stent resolved the ischemia in all cases. The stented segment showed no deterioration following side-branch angioplasty. Six-month follow-up angiography showed a restenosis in the branch vessel of eight patients. The stented parent vessel restenosed in four patients. Therefore, side-branch balloon angioplasty after coronary stenting for ongoing ischemia is technically feasible and immediately effective. Restenosis of the branch occurs in most cases.
在冠状动脉支架置入过程中，存在使分支血管受损的风险，这可能导致胸痛。受损的分支血管可通过经支架侧方的球囊血管成形术重新开通。在连续的10例出现分支血管受损并伴有胸痛的患者中，经支架侧方的球囊血管成形术在所有病例中均缓解了缺血症状。分支血管成形术后，置入支架的节段未出现恶化。6个月的随访血管造影显示，8例患者的分支血管出现再狭窄。4例患者的置入支架的主血管出现再狭窄。因此，冠状动脉支架置入后针对持续性缺血进行分支血管球囊成形术在技术上是可行的，且立竿见影。大多数情况下会出现分支血管再狭窄。
