scholarly journals Successful depiction of systemic collateral supply to pulmonary artery in CTEPH using time-resolved 4D CT angiography: a case report

2020 ◽  
Vol 10 (2) ◽  
pp. 204589401988106
Author(s):  
Masashi Tamura ◽  
Takashi Kawakami ◽  
Yoshitake Yamada ◽  
Masaharu Kataoka ◽  
Seishi Nakatsuka ◽  
...  
Keyword(s):  
Pulmonary Artery ◽  
Chronic Total Occlusion ◽  
Bronchial Artery ◽  
Total Occlusion ◽  
Time Resolved ◽  
Systemic Artery ◽  
Balloon Pulmonary Angioplasty ◽  
Test Bolus ◽  
Ct System ◽  
Collateral Vessels

A 49-year-old man with CTEPH (pre-procedural mean pulmonary artery pressure: 36 mmHg) underwent balloon pulmonary angioplasty. Chronic total occlusion of the left inferior pulmonary artery trunk was observed. To evaluate the collateral vessels of the chronic total occlusion, 4D-CTA was performed. The examination was performed using a 256-row detector CT system using the test bolus tracking method. 4D-CTA showed the bronchial artery-to-left inferior pulmonary artery collateral supply, which was confirmed by a selective bronchial artery angiography. The patient’s symptoms improved with balloon pulmonary angioplasty of the other stenotic lesions. 4D-CTA can noninvasively evaluate the anatomy and hemodynamics of multiple systemic collaterals simultaneously. This technique can support interventions in systemic artery-to-pulmonary artery collaterals, such as embolization, and could be helpful in challenging balloon pulmonary angioplasty interventions for chronic total occlusion to identify vessel structures distal to the chronic total occlusion and collateral channels for a retrograde approach.

scholarly journals Balloon Pulmonary Angioplasty of a Chronic Total Occlusion

2021 ◽  
Vol 14 (3) ◽  
pp. e23-e25
Author(s):  
Ana Rita Pereira ◽  
Rita Calé ◽  
Filipa Ferreira ◽  
Sofia Alegria ◽  
Sílvia Vitorino ◽  
...  
Keyword(s):  
Chronic Total Occlusion ◽  
Total Occlusion ◽  
Balloon Pulmonary Angioplasty

scholarly journals TCT-162 Feasibility of Chronic Total Occlusion Recanalization During Balloon Pulmonary Angioplasty

2018 ◽  
Vol 72 (13) ◽  
pp. B69
Author(s):  
Sanjum Sethi ◽  
Kinjan Parikh ◽  
Erika Berman Rosenzweig ◽  
Matthew Bacchetta ◽  
Alejandro Torres ◽  
...  
Keyword(s):  
Chronic Total Occlusion ◽  
Total Occlusion ◽  
Balloon Pulmonary Angioplasty

scholarly journals Collateral Function in Patients with Coronary Occlusion Evaluated by 201Thallium Scintigraphy

2008 ◽  
Vol 8 (4) ◽  
pp. 304-308
Author(s):  
Aida Hasanović
Keyword(s):  
Myocardial Perfusion ◽  
Chronic Total Occlusion ◽  
Coronary Occlusion ◽  
Regional Wall Motion ◽  
Total Occlusion ◽  
Coronary Collaterals ◽  
Coronary Collateral ◽  
Perfusion Defects ◽  
Collateral Vessels ◽  
The Impact

The present study evaluated the impact of the angiographically documented collaterals on regional myocardial perfusion measured by 201thallium scintigraphy in patients with a chronic total occlusion.The study included 60 patients with chronic total occlusion who underwent rest-stress myocardial perfusion scintigraphy and coronary angiography. All patients had angiographic evidence of coronary collaterals. Patients were divided into two groups: group one had well-developed coronary collateral vessels (n=35) and group II had poor coronary collateral development (n=25).Patients with chronic total occlusion had severe and extensive stress-induced myocardial perfusion defects regardless of the grade of angiographic coronary collaterals. The perfusion defects in the group with good collaterals were predominantly reversible, suggesting that coronary collaterals preserved myocardial viability in the regions subtended by a total coronary occlusion. A significant correlation between good collaterals with complete protection and poor collaterals with no protection was noted.Our results demonstrate a protective effect of collaterals on myocardial perfusion during coronary occlusion. The effective angiographic collaterals may prevent resting regional wall motion abnormalities but do not appear to protect against stress-induced perfusion defect.

scholarly journals Coronary Chronic Total Occlusion With Collateral Channels From the Bronchial Artery

2019 ◽  
Vol 12 (4) ◽  
pp. 406-408 ◽  
Author(s):  
Kenichiro Shimoji ◽  
Shunsuke Matsuno ◽  
Kiwamu Sudo ◽  
Etsuo Tsuchikane
Keyword(s):  
Chronic Total Occlusion ◽  
Bronchial Artery ◽  
Total Occlusion

Primary Stenting for Chronic Total Occlusion of the Infrarenal Aorta

2000 ◽  
Vol 7 (4) ◽  
pp. 340-344 ◽  
Author(s):  
Christos D. Karkos ◽  
Stephen P. D'Souza ◽  
Robert Hughes
Keyword(s):  
Chronic Total Occlusion ◽  
Infrarenal Aorta ◽  
Total Occlusion ◽  
Primary Stenting

scholarly journals Successful case of direct puncture of a prosthetic bypass graft in endovascular treatment for long superficial artery chronic total occlusion: a case report

2020 ◽  
Author(s):  
Makoto Sugihara ◽  
Yoko Ueda ◽  
Yuiko Yano ◽  
Shin-Ichiro Miura
Keyword(s):  
Femoral Artery ◽  
Chronic Total Occlusion ◽  
Bypass Graft ◽  
Common Femoral Artery ◽  
Critical Limb Ischaemia ◽  
Complete Revascularization ◽  
Anastomotic Site ◽  
Graft Occlusion ◽  
Total Occlusion ◽  
Direct Puncture

Abstract Background The access site for endovascular therapy (EVT) is often limited because of multi-vascular diseases. Prior lower limb bypass can potentially limit the availability of common femoral artery access when EVT is required. Case summary An 88-year-old woman who presented with non-healing ulceration in the dorsalis pedis of the left foot despite treatment for several months was admitted to our hospital. She had undergone axillo-bilateral femoral bypass surgery for right critical limb ischaemia 3 years previously. Ultrasound and contrast computed tomography demonstrated bypass graft occlusion, left superficial femoral artery (SFA)-popliteal artery long chronic total occlusion from the origin with severe calcification and severe stenosis in the bilateral common femoral artery close to the anastomotic site. EVT for the left SFA occlusion was necessary to save the left foot, but access sites for EVT were limited. We decided to puncture an occluded axillo-femoral prosthetic bypass graft. It is difficult to cross the wire with only an antegrade approach. Therefore, it was necessary to use a bi-directional approach with dorsalis pedis artery puncture and the Rendez-vous technique. Finally, angiogram demonstrated improved blood flow to the wound site, and haemostasis at the puncture site could be achieved by manual compression. The ulceration healed within a month. Discussion Direct puncture of a prosthetic bypass graft and additional techniques resulted in complete revascularization. Thus, direct puncture of a bypass graft could be a useful EVT strategy for patients with complex and extremely long chronic total occlusion.

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