Initial and subsequent angiographic outcome of percutaneous transluminal angioplasty performed on internal mammary artery grafts.

Ishizaka, Nobukazu; Ishizaka, Yuko; Ikari, Yuji; Isshiki, Takaaki; Tamura, Tsutomu; Suma, Hisayoshi; Yamaguchi, Tetsu

doi:10.1136/hrt.74.6.615

Cited by 21 publications

(13 citation statements)

References 35 publications

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“…Nitric oxide inhibits proliferation after PTA and after stent implantation [35,36,37,38] and endogenous nitric oxide production by nonendothelial vascular cells might therefore explain the reduced intima proliferation observed in the IMA in our experiments [34]. The outlined mechanisms may explain – at least in part – the excellent acute and long-term results after PTA of the IMA [39,40,41,42]. Furthermore, comparative examinations of various arteries in patients have shown that atherosclerotic changes are diminished in the IMA compared with the other arteries [43, 44].…”

Section: Discussionmentioning

confidence: 80%

Resistance of the Internal Mammary Artery to Restenosis: A Histomorphologic Study of Various Porcine Arteries

Horstick

Bierbach²,

Schlindwein³

et al. 2007

J Vasc Res

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Background/Aims: Restenosis after percutaneous transluminal angioplasty (PTA) of the internal mammary artery (IMA) grafts is much less pronounced than in other arteries and venous grafts. The aim of the study was to test whether various arteries respond differently to dilatation. Methods: PTA of the IMA, carotid, renal and circumflex coronary (RCx) arteries was performed in 9 pigs (balloon to artery ratio of 1:1.5). After 8 weeks, angiography was repeated and vessels prepared for histological analysis. Immunohistochemical staining was done to examine proliferative activity (Ki67) and to identify the vasa vasorum of the adventitia (F VIII-RA). Results: The intima-media ratio after PTA was lowest in the IMA (0.06), followed by the carotid (0.27) and renal arteries (0.49) and the RCx (0.69). Proliferation of the intima was seen at 287° of the vessel circumference in the RCx, at 286° in the renal and at 166° in the carotid artery. No proliferative activity was seen in the IMA. The intima-adventitia ratio was lower in the IMA than in the RCx and renal arteries (p < 0.05). Conclusion: Intima proliferation after PTA varies between the different vessels, with best results seen in the IMA. There are differences in remodeling after PTA between muscular, muscular/elastic and elastic arteries.

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Section: Discussionmentioning

confidence: 80%

Resistance of the Internal Mammary Artery to Restenosis: A Histomorphologic Study of Various Porcine Arteries

Horstick

Bierbach²,

Schlindwein³

et al. 2007

J Vasc Res

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“…Despite the fact that the experience is short and the number of patients is small, we think that the long-term results of angioplasty on radial artery grafts will be comparable to those obtained on left internal mammary angioplasty, especially when lesions are located on a distal anastomosis, where the success rate is high, follow-up is excellent, and stenting is feasible [5][6][7]10,11].…”

Section: Discussionmentioning

confidence: 84%

Percutaneous transluminal angioplasty of radial artery grafts

Blanchard

Ztot

Pagny

et al. 1998

Cathet. Cardiovasc. Diagn.

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“…1,2) The most common site of stenosis in the LITA graft is the distal anastomosis. 4) On the other hand, graft failure of LITA itself is rare but can occur. Manipulation of the LITA graft during the surgical procedure is the most common cause of graft failure.…”

Section: Discussionmentioning

confidence: 99%

Spontaneous Spiral Dissection of Left Internal Thoracic Artery Graft

et al. 2015

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SummaryThe left internal thoracic artery (LITA) is considered the most reliable coronary artery bypass grafting conduit due to its high rate of long-term patency. LITA grafts are extremely durable and associated complications are infrequent. We present a case with spontaneous spiral dissection of a LITA graft to the left anterior descending artery, which was assessed by optical coherence tomography (OCT) and intravascular ultrasound (IVUS). OCT was superior in visualizing the disrupted flap, false lumen, and intramural hematoma, but it did not visualize the full extent of the vessel wall. In contrast, IVUS allowed more complete and deeper vessel visualization, and thus better appreciation of the extent of intramural hematoma. Combined use of these two modalities provides complementary details on imaging of a LITA dissection. (Int Heart J 2015; 56: 360-362)

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Initial and subsequent angiographic outcome of percutaneous transluminal angioplasty performed on internal mammary artery grafts.

Cited by 21 publications

References 35 publications

Resistance of the Internal Mammary Artery to Restenosis: A Histomorphologic Study of Various Porcine Arteries

Resistance of the Internal Mammary Artery to Restenosis: A Histomorphologic Study of Various Porcine Arteries

Percutaneous transluminal angioplasty of radial artery grafts

Spontaneous Spiral Dissection of Left Internal Thoracic Artery Graft

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