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Nisityotakul P, Rookkapan S. 10년간의 3차 의료기관 경험을 바탕으로 한 대동맥장골동맥 폐색 질환 혈관내 치료의 기술적 고찰: 후향적 연구. JOURNAL OF THE KOREAN SOCIETY OF RADIOLOGY 2024; 85:596-606. [PMID: 38873374 PMCID: PMC11166595 DOI: 10.3348/jksr.2023.0116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/16/2023] [Accepted: 01/18/2024] [Indexed: 06/15/2024]
Abstract
Purpose To examine the technical considerations of endovascular treatment for aortoiliac occlusive disease (AIOD) based on a 10-year experience in Songklanagarind Hospital. Materials and Methods This retrospective cohort study included 210 patients who underwent endovascular treatment for symptomatic AIOD between January 2010 and December 2020. The patients' clinical and lesion characteristics, including technical considerations of the procedure, were collected, analyzed, and stratified using the Transatlantic Inter-Society Consensus (TASC). Results Most patients (80%) in this study had chronic limb-threatening ischemia lesions, with an occlusion rate of 37%. The technical success rate of TASC C & D was lower than that of TASC A & B, 84.4% vs. 99.2% p ≤ 0.001. A technical success rate of 93.3% (14/15) was found for the femoral and brachial approach, compared with a success rate of 89.0% (57/64) for the unibifemoral approach in TASC C & D, without a statistically significant difference (p = 0.076). However, the puncture site complications in this route were up to 17.6%, which is the highest rate compared with other techniques. These complications could be treated either conservatively or minimally invasively. Conclusion In cases of failed femoral access, simultaneous femoral and brachial approaches improved the technical success rate of endovascular recanalization of TASC C & D aortoiliac occlusions.
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Affiliation(s)
- Panat Nisityotakul
- Department of Radiology, Vachira Phuket Hospital, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Sorracha Rookkapan
- Department of Radiology, Vachira Phuket Hospital, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
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Freyermuth M, Roisin S, Saidak Z, Matray L, Sevestre MA, Reix T, Soudet S. Contemporary Minimally Invasive Surgery for TASC-D Aorto-Iliac Lesions: Analysis of Outcomes and Risk Factors for Primary and Secondary Patency. Ann Vasc Surg 2023; 97:367-374. [PMID: 37236531 DOI: 10.1016/j.avsg.2023.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND For complex extensive TASC-II D lesions, the standard of care remains conventional surgery. Nevertheless, guidelines tend to broaden endovascular surgery indications in expert centers for patients at high surgical risk with TASC-II D lesions. Due to the increasing use of endovascular surgery in this setting, we planned to evaluate the patency rate of this approach. METHODS We conducted a retrospective study in a tertiary center. All patients treated for symptomatic peripheral arterial disease (PAD) with classified D lesions according to the TASC-II classification and requiring management of the aortoiliac bifurcation were retrospectively included between January 1, 2007 and December 31, 2017. The type of surgical approach was classified as a pure percutaneous approach or hybrid surgery. The main objective was to describe long-term patency results. The secondary objectives were to identify risk factors for loss of patency and long-term complications. The primary outcomes were primary patency, primary-assisted patency, and secondary patency at 5 years of follow-up. RESULTS One hundred and thirty-six patients were included. For the overall population, the primary, primary-assisted, and secondary patency proportions at 5 years were 71.6% (95% confidence interval (CI) 63.2-81%), 82.1% (95% CI 74.9-89.3%), 96.3% (95% CI 92-100%), respectively. For primary patency, there was a significant difference in favor of the covered stent group at 36 months (P < 0.01) and 60 months (P = 0.037). In a multivariate model, only CS and age were associated with a better primary patency (hazard ratio (HR) 0.36, CI 95% [0.15-0.83], P = 0.0193 and an HR 0.07, 95% CI [0.05-0.09], P = 0.005, respectively). The overall rate of perioperative complications was 11%. CONCLUSIONS We report that endovascular and hybrid surgery are safe and effective in the management of TASC-D complex aortoiliac lesions in mid to long-term follow-up. Short-term and long-term complications were all considered as minor.
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Affiliation(s)
| | | | - Zuzana Saidak
- EA Chimere, 7516, Université Picardie Jules Vernes, Amiens, France; Laboratoire de Biochimie, Centre de Biologie Humaine, Amiens, France
| | - Lauranne Matray
- Department of Vascular Surgery, New Clinic of the Union, Boulevard Ratalens, Saint Jean, France
| | - Marie Antoinette Sevestre
- EA Chimere, 7516, Université Picardie Jules Vernes, Amiens, France; Department of Vascular Medicine, Amiens, France
| | | | - Simon Soudet
- EA Chimere, 7516, Université Picardie Jules Vernes, Amiens, France; Department of Vascular Medicine, Amiens, France.
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3
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Mosquera-Lopez OA, Mosquera-Lopez JA, Cuesta-Pertuz AA. The role of subtraction angiography in the diagnosis of distal aorta occlusion following CT urography: A case report. Radiol Case Rep 2023; 18:2249-2252. [PMID: 37113630 PMCID: PMC10126851 DOI: 10.1016/j.radcr.2023.03.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 03/19/2023] [Indexed: 04/29/2023] Open
Abstract
Distal aortic occlusion is rare; and because many cases are left undetected due to an asymptomatic early stage, its prevalence is currently unknown. In this report, we present a case of a 53-year-old man with history of hypertension and tobacco usage who was referred to our ambulatory imaging center for advanced computerized tomography (CT) urography evaluation after presenting abdominal pain consistent with renal calculi. The CT urography showed left kidney stones - confirming the initial clinical suspicion of the referring physician. As incidental findings, the CT also revealed occlusion of the distal aorta, the common iliac arteries, and the proximal external iliac arteries. Based on these findings, we performed an angiography procedure that confirmed the total occlusion of the infrarenal abdominal aorta at the level of the inferior mesenteric artery. At this level, multiple collaterals and anastomosis with pelvic vessels were found. The therapeutic intervention without the angiography results could have been not optimal based on the CT urography alone. Thus, this case highlights the value of the subtraction angiography for accurate diagnosis of distal aortic occlusion following a suspicious incidental finding in CT urography.
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Affiliation(s)
| | - Jesus Alberto Mosquera-Lopez
- Diagnostic Imaging Department, Diagnosticar S.A.S., Calle 24 # 7-07. Quibdo, Choco, Colombia
- Corresponding author.
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Mantripragada K, Abadi K, Echeverry N, Shah S, Snelling B. Transbrachial Access Site Complications in Endovascular Interventions: A Systematic Review of the Literature. Cureus 2022; 14:e25894. [PMID: 35844321 PMCID: PMC9278800 DOI: 10.7759/cureus.25894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 06/06/2022] [Indexed: 11/05/2022] Open
Abstract
The transfemoral approach (TFA) or transradial approach (TRA) serves as the primary technique for most endovascular cases; however, the transbrachial (TBA) route is an alternative access site used when TFA and TRA are contraindicated. Although TBA has advantages over TRA, such as the ability to accommodate large guide catheters and devices, there is some apprehension in implementing TBA due to perceived access site complication rates. This article aims to glean the rate of access site complication from current literature. Relevant studies were identified using the following search terms: ((access site complications) AND ((endovascular AND brachial) OR (percutaneous brachial access) OR (brachial))) OR (endovascular AND (percutaneous brachial access)); endovascular + brachial artery; endovascular + brachial artery + access site; and endovascular + brachial artery + access site complications. Articles published after 2008 addressing major complication rates from percutaneous TBA interventions were included. Fifteen studies out of 992 total articles met the inclusion criteria. The major access site complication rate was 75/1,424 (5.27%). Patients who underwent hemostasis with a vascular closure device (VCD) had a major complication rate of 13/309 (4.21%) compared to a major complication rate of 65/1122 (5.79%) for patients who underwent hemostasis with manual compression (MC). The major access site complication rate associated with TBA was 5.27%, which is relatively high compared to the complication rate in TFA or TRA. More prospective trials are needed to fully understand the access site complication rate in TBA interventions.
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Affiliation(s)
| | - Kevin Abadi
- Emergency Medicine, Memorial Healthcare, Pembroke Pines, USA
| | - Nikolas Echeverry
- College of Medicine, Charles E. Schmidt College of Medicine at Florida Atlantic University, Boca Raton, USA
| | - Sumedh Shah
- Department of Neurosurgery, University of Miami, Miami, USA
| | - Brian Snelling
- Neurosurgery, Boca Raton Regional Hospital, Boca Raton, USA
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5
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Zhang B, Niu G, Yan Z, Zou Y, Tong X, Yang M. Midterm outcomes of endovascular treatment with bare metal stents for Leriche syndrome patients. Interact Cardiovasc Thorac Surg 2021; 32:83-88. [PMID: 33221834 DOI: 10.1093/icvts/ivaa223] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/17/2020] [Accepted: 09/03/2020] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES This study was undertaken to evaluate the acute and midterm results of endovascular treatment with bare metal stents (BMS) for Leriche syndrome patients. METHODS Patients with Leriche syndrome treated with BMS from August 2008 to May 2017 were included in the study and followed up. The primary endpoints were primary restenosis-free survival rates at 1, 2 and 3 years. The secondary endpoints were secondary restenosis-free and freedom from target lesion revascularization survival rates at 1, 2 and 3 years; technical success rate; complication rate; procedure-related mortality rate; and clinical status improvement at follow-up. RESULTS Twenty patients were included and the follow-up duration was 34.7 ± 18.7 months (0-86 months). The 1-, 2- and 3-year primary restenosis-free survival rates were 94.4%, 88.1% and 73.5% and the secondary patency rates were 94.4%, 94.4% and 86.6%, respectively. The freedom from target lesion revascularization survival rates of patients at 1, 2 and 3 years were 94.4%, 88.1% and 79.3%, respectively. The aortoiliac lesions were successfully treated with BMS bilaterally in 17 patients (85.0%) and unilaterally in another 3 patients (15.0%). The complication rate was 10.0% and the procedure-related mortality rate was 0%. Mean ankle-brachial index increased significantly from 0.43 ± 0.20 before the procedure to 0.95 ± 0.21 after the procedure (P < 0.001), and to 1.00 ± 0.19 at the end of the follow-up (P < 0.001). Improvement in symptoms occurred in most patients soon after the endovascular procedure (95.0%) and at follow-up (88.2%). CONCLUSIONS Endovascular treatment with BMS is effective and safe for patients with Leriche syndrome according to 3-year follow-up results.
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Affiliation(s)
- Bihui Zhang
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Guochen Niu
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Ziguang Yan
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Yinghua Zou
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Xiaoqiang Tong
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Min Yang
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
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Nadarajan C, Wahid AA, Ng CY, Haron J, Peter JS, Mohd Yusof MF. Asymptomatic complete distal abdominal aortic occlusion with initial presentation of ruptured intracranial aneurysm. Radiol Case Rep 2021; 16:1993-1998. [PMID: 34158880 PMCID: PMC8203583 DOI: 10.1016/j.radcr.2021.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 11/17/2022] Open
Abstract
Aortoilliac occlusive disease is occlusive atherosclerosis disease involving the distal aorta and bifurcation of iliac arteries and it is a subtype of peripheral arterial disease. Total occlusion of the abdominal aorta is a rare occurrence with an incidence of 3% -8.5% among the aortoiliac occlusive disease patients. We present a case of a 53 years old patient with a background history of hypertension and ex intravenous drug abuser with negative retroviral screening status, with no previous complaints who was brought to the Emergency Department with sudden onset of altered sensorium and 1 episode of seizure. Computed tomography angiogram of the brain showed a ruptured anterior communicating artery aneurysm. Diagnostic conventional angiogram of the brain was planned; however, difficulty was encountered during bilateral femoral artery cannulation with the abrupt termination of bilateral common iliac arteries. Computed tomography angiogram of the abdomen showed incidental finding of total occlusion of the abdominal aorta. As a conclusion, total occlusion of abdominal aorta secondary to aortoiliac occlusive disease with an associated intracranial aneurysm is never reported in the literature to date. This case highlights the possibility of association in between these two conditions which may benefit from further research.
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Affiliation(s)
- Chandran Nadarajan
- Department of Radiology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan
| | - Amirah Abdul Wahid
- Department of Radiology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Chiak Yot Ng
- Department of Radiology Medical Based Department, Faculty of Medicine & Health Science, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Juhara Haron
- Department of Radiology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan
| | - Jeremiah Sunderaj Peter
- Department of Radiology, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
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Garg P, Kumar M, Choudhury A, Gupta A, Agarwal Y. Endovascular management and outcomes of aortoiliac occlusive disease. INDIAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY 2021. [DOI: 10.4103/ijves.ijves_5_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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8
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Liang HL, Li MF, Hsiao CC, Wu CJ, Wu TH. Endovascular management of aorto-iliac occlusive disease (Leriche syndrome). J Formos Med Assoc 2020; 120:1485-1492. [PMID: 33189506 DOI: 10.1016/j.jfma.2020.10.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Bypass grafting is the standard of care for chronic aorto-iliac occlusive disease (AIOD, aka Leriche Syndrome) but is associated with mortality rates of up to 25% if surgical re-intervention is necessary. Despite a recent shift towards an endovascular-first strategy for TransAtlantic InterSociety Consensus II ("TASC II") C and D lesions, reports from Leriche Syndrome are still limited. PATIENTS AND METHODS 15 high-risk patients (11 male, 4 female), mean age of 60.6 years, with chronic aorto-iliac occlusive disease were retrospectively reviewed. Retrograde approaches via the bilateral femoral arteries for aortic occlusion less than 4 cm in length and/or antegrade fashion from the brachial artery for juxtarenal type lesions were made. For the latter, thrombolysis prior to angioplasty was also performed. Intraluminal or if necessary, subintimal angioplasty was performed with deployment of either bare metal stents or stentgrafts in a kissing-stent fashion. RESULTS A total of 28 iliac arteries and 14 occluded abdominal aorta were treated with 100% technical success, of which 25% success were achieved by using subintimal technique. Two minor complications occurred, including vascular rupture and distal emboli in one patient apiece, which were successfully managed via endovascular fashion. There were no complications of renal artery emboli. Primary and secondary patency rates at 1, 3 and 5 years were 92.3% and 100%; 83.9% and 100%; and 83.9% and 100%, respectively. CONCLUSION Endovascular therapy for chronic aorto-iliac occlusion has a high technical success rate, with good short- and mid-term primary and secondary patency rates and may provide a valid alternative to surgery for high-risk patients.
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Affiliation(s)
- Huei-Lung Liang
- Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC; Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan, ROC.
| | - Ming-Feng Li
- Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC; Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan, ROC
| | - Chia-Chi Hsiao
- Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC; Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan, ROC
| | - Chieh-Jen Wu
- Section of Vascular Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC
| | - Tung-Ho Wu
- Section of Vascular Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC
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9
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Sonetto A, Faggioli G, Pini R, Abualhin M, Goretti M, Fronterrè S, Pini A, Gargiulo M. Kissing Stent Technique for TASC C-D Lesions of Common Iliac Arteries: Clinical and Anatomical Predictors of Outcome. Ann Vasc Surg 2020; 71:288-297. [PMID: 32889158 DOI: 10.1016/j.avsg.2020.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND The endovascular treatment of peripheral artery obstructive disease in Trans-Atlantic Inter-Society (TASC) C and D lesions involving the aortic bifurcation is a matter of debate. The aim of this study is to evaluate the technical and clinical success of kissing stenting in this context and to analyze predictors of outcome. METHODS All patients treated for aortoiliac TASC C and D lesions with kissing stenting (from 2012 to 2017) in a 6-year period were retrospectively analyzed. Preoperative anatomical features were evaluated by reviewing computed tomography angiography images to identify severe iliac calcifications (SICs) versus not SIC (NSICs). Primary end points were as follows: technical success (TS), procedural success, primary patency (PP), and clinical success (CS). Secondary end points were as follows: secondary patency, assisted patency, survival, mid-term procedure-related complications, and risk factors that affected TS and mid-term results. RESULTS In a 6-year period, 51 patients fulfilled the inclusion criteria. TS was achieved in 49 (96.1%) cases. Thirty-one patients (60.8%) received a dual antiplatelet therapy (DAPT) for at least 1 month after the procedure. 30-day CS was 94.1%. Median follow-up was 45.7 months (IQR: 24.5, 8-86 range). The CS was 92.6% at 3 years, with a PP of 86.8% and a secondary patency of 93.2% at 3 years. Six (13.2%) iliac axis occluded during the first follow-up year. NSIC was statistically and independently associated with a lower PP (73% vs. 96%, P = 0.03); DAPT was statistically and independently associated with higher PP than single antiplatelet therapy (96% vs. 75%, P = 0.03); these results were confirmed by Cox regression analysis (HR: 0.14, 95%, IC: 0.01-0.89, P = 0.05 for DAPT analysis; HR: 6.8, 95%, IC: 1.21-59, P = 0.05 for NSIC analysis). CONCLUSIONS Endovascular treatment for TASC C-D is an effective technique. Postoperative stent occlusion is higher in patients with no DAPT and it usually occurs during the first postoperative year. Preoperative NSIC lesions are associated with reduced PP at 3 years of follow-up.
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Affiliation(s)
- Alessia Sonetto
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy.
| | - GianLuca Faggioli
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Rodolfo Pini
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Mohammad Abualhin
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Martina Goretti
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Sara Fronterrè
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Alessia Pini
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Mauro Gargiulo
- Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
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Manunga J, Mirza A, Skeik N, Stanberry L, Jayarajan S, Sullivan TM. Comparative Long-term Outcomes of Patients with Aortoiliac Occlusive Disease Limited to Common Iliac Arteries Who Underwent Endarterectomy versus Bypass Grafting. Ann Vasc Surg 2020; 68:1-7. [PMID: 32474143 DOI: 10.1016/j.avsg.2020.05.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/07/2020] [Accepted: 05/08/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND The objective of this study was to compared outcomes of patients with aortoiliac occlusive disease (AIOD), limited to the common iliac artery, who underwent either aortoiliac thromboendarterectomy (AIE) or aortobiiliac bypass grafting (ABIB). METHODS A single-center, retrospective analysis of consecutive patients with AIOD who underwent either AIE or ABIB between 2010 and 2019 from a prospective database. Patients with disease extending to the external iliac or common femoral arteries were excluded. Data collected included demographics, cardiovascular risk factors, indication for surgery, preoperative and postoperative ankle brachial indexes (ABIs), estimated blood loss, major adverse events (MAEs), and long-term patency. The study end point was clinical success, defined as improvement in ABIs with resolution of symptoms. MAEs included return to the operating room for any reason, postoperative myocardial infarction, stroke, pneumonia, or venous thromboembolism. RESULTS Thirty-three patients, who met inclusion criteria, underwent repair for AIOD (AIE: 13; ABIB: 20) at our institution during this time. In both groups, there were more women than men (AIE: 11, ABIB: 10) with a mean age of 55 ± 7 years and 58 ± 6 years in the AIE and ABIB group, respectively. Indication for surgery included disabling claudication in 19 patients, ischemic rest pain in 13 patients, and tissue loss in one patient. No difference in cardiovascular risk factors or AIOD severity was noted between groups. Patients in the AIE group had slightly higher body mass index (30 ± 5 vs. 26 ± 6, P = 0.06). Two patients in each group required concomitant renal/mesenteric artery endarterectomy. One patient in the AIE group required bilateral femoral artery exposure and external iliac thrombectomy. MAEs (4 vs. 0) were higher in the ABIB group including, pneumonia in one patient, myocardial infarction in another, return to the operating room for evacuation of hematoma in the third and bypass graft thrombectomy with lower extremity angiography in the fourth patient. There were no differences in the intensive care unit or hospital length of stay between groups. Patients in both groups achieved return of normal ABI and complete resolution of their symptoms. At mean follow-up time of 43.4 ± 25.2 and 52.9 ± 35.4 months in the AIE and ABIB group, respectively, there was no symptomatic recurrence or need for reintervention while two patients in the ABIB group died of non-aortic-related issues. CONCLUSIONS Both procedures were safe, effective, and conferred high long-term primary patency with no need for reintervention in patients with AIOD limited to the common iliac arteries.
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Affiliation(s)
- Jesse Manunga
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute @ Abbott Northwestern Hospital, Minneapolis, MN.
| | - Aleem Mirza
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute @ Abbott Northwestern Hospital, Minneapolis, MN
| | - Nedaa Skeik
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute @ Abbott Northwestern Hospital, Minneapolis, MN
| | | | - Senthil Jayarajan
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute @ Abbott Northwestern Hospital, Minneapolis, MN
| | - Timothy M Sullivan
- Section of Vascular and Endovascular Surgery, Minneapolis Heart Institute @ Abbott Northwestern Hospital, Minneapolis, MN
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"Squid-Capture" Modified In Situ Stent-Graft Fenestration Technique for Recurrent Abdominal Aortic Occlusive Disease after Collapse of Balloon-Expandable Stent. Ann Vasc Surg 2020; 66:667.e15-667.e20. [PMID: 31904515 DOI: 10.1016/j.avsg.2019.12.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/16/2019] [Accepted: 12/30/2019] [Indexed: 11/22/2022]
Abstract
We present a case of an 85-year-old woman with bilateral limb-threatening ischemia caused by acute-on-chronic occlusion of the infrarenal aorta. The patient once underwent endovascular recanalization using nitinol and stainless-steel bare-metal stent implantation; however, the stainless-steel stent collapsed 3 months later. In the second endovascular therapy, "Squid-Capture" modified in situ stent-graft fenestration technique followed by stent-in-stent implantation with stent graft and bare-metal stent was successfully applied, and it can be regarded as a promising treatment option for the repair of abdominal aortic occlusive disease in some limited anatomical conditions.
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12
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Fang L, Lai Z, Qiu C, Shao J, Chen Y, Liu X, Yu P, Liu B. Endovascular Treatment for Infrarenal Aortic Occlusion: A Systematic Review and Meta-Analysis. Ann Vasc Surg 2020; 62:432-441.e13. [DOI: 10.1016/j.avsg.2019.05.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 03/21/2019] [Accepted: 05/18/2019] [Indexed: 01/22/2023]
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13
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Outcome Comparison between Open and Endovascular Management of TASC II D Aortoiliac Occlusive Disease. Ann Vasc Surg 2019; 61:65-71.e3. [DOI: 10.1016/j.avsg.2019.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 04/12/2019] [Accepted: 06/02/2019] [Indexed: 11/20/2022]
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Endovascular treatment of different types of iliac occlusions-Results from an observational study. PLoS One 2019; 14:e0222893. [PMID: 31577801 PMCID: PMC6774573 DOI: 10.1371/journal.pone.0222893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 09/08/2019] [Indexed: 12/24/2022] Open
Abstract
Objective The aim of this study was to evaluate the results of endovascular therapy on the treatment of different types of iliac occlusions. Materials and methods A bi-center prospective, non-randomized study was conducted on 100 patients (mean age 59.14 ± 8.53; 64 men) who underwent endovascular treatment of iliac occlusive disease between January 2013 and November 2017. We evaluated baseline data, procedure, and follow-up results for the entire group, and according to Trans-Atlantic Inter-Society Consensus (TASC II) classification. The majority of patients (60%) were treated for severe claudication; 56 (56%) patients had TASC B occlusions, 28 patients TASC C, and 16 patients TASC D. Results The mean length of the occluded segments was 61.41 ± 35.15 mm. Procedural complications developed in 6 patients (6%). Mean ankle-brachial pressure index increased from 0.40 ± 0.12 preoperatively to 0.82 ± 0.16 postoperatively. The mean follow-up was 33.18 ± 15.03 months. After 1 and 5 years, the primary patency rates were 98% and 75.1%, and the secondary patency rate was 97% respectively. Regarding occlusion complexity there were no statistical significant differences in primary patency rates (TASC B vs. C vs. D: p = 0.19). There were no statistically significant differences in primary patency rates between patients in different clinical stages, as well as between the type of stents, and location of the occlusion. Conclusion In our study, endovascular treatment for iliac artery occlusions proved to be a safe and efficient approach with excellent primary and secondary patency rates regardless of the complexity of occlusions defined by TASC II classification. This study is aligned with the notion that in well selected patients, endovascular therapy can be the treatment of choice even in complex iliac lesions if performed by experienced endovascular interventionists in high volume centers.
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Chiam PT. Endovascular recanalisation of chronic aortoiliac occlusions - will this become the initial treatment of choice? ASIAINTERVENTION 2019; 5:107-109. [PMID: 36483526 PMCID: PMC9706723 DOI: 10.4244/aijv5i2a17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Paul T.L. Chiam
- Mount Elizabeth Hospital, 3 Mount Elizabeth, #08-06, Singapore 228510
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Kato T, Zen K, Kawarada O, Hozawa K, Anzai H, Nakamura H, Funatsu A, Kawasaki D, Tsubakimoto Y, Higashimori A, Kozuki A, Matoba S. Clinical outcomes of endovascular treatment for chronic aortic occlusion: a retrospective multicentre registry: EVT for chronic aortic occlusion. ASIAINTERVENTION 2019; 5:121-127. [PMID: 34912975 DOI: 10.4244/aij-d-18-00050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 04/11/2019] [Indexed: 12/12/2022]
Abstract
AIMS The aim of this study was to evaluate the clinical outcomes of endovascular treatment (EVT) for chronic aortic occlusion (CAO) using multicentre registry data. METHODS AND RESULTS From April 2003 to December 2015, data on 73 consecutive patients (55 men and 18 women; aged 70.7±12.2 years) who underwent EVT for CAO were collected retrospectively from 15 centres in Japan. The primary endpoint was the primary patency at 12 months after EVT. Secondary endpoints were procedural success and periprocedural complication rates. We analysed 67 patients who underwent complete endovascular revascularisation after 2007. Initial procedural success was achieved in 63 cases (94.0%). Complications occurred in three patients (4.5%) (stroke, n=1; distal embolism, n=1; access-site haematoma requiring blood transfusion, n=1). In patients after successful EVT (n=63), the primary and secondary patency rates at 12 months were 90.7% and 97.7%, respectively. During a mean follow-up period of 17.8 months, restenosis/re-occlusion was observed in eight patients (12.7%). CONCLUSIONS EVT for CAO could be performed safely with a high procedural success rate. The short-term clinical outcome was acceptable despite lesion complexity.
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Affiliation(s)
- Taku Kato
- Department of Cardiology, Rakuwakai Otowa Hospital, Kyoto, Japan
| | - Kan Zen
- Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Osami Kawarada
- Department of Cardiovascular Medicine, Ikuwakai Memorial Hospital, Osaka, Japan
| | - Koji Hozawa
- Department of Cardiology, Interventional Cardiology Unit, New Tokyo Hospital, Matsudo, Japan
| | - Hitoshi Anzai
- Department of Cardiology, Ota Memorial Hospital, Ota, Japan
| | - Hiroaki Nakamura
- Department of Cardiology, Kakogawa Central City Hospital, Kakogawa, Japan
| | | | - Daizo Kawasaki
- Cardiovascular Division, Department of Internal Medicine, Morinomiya Hospital, Osaka, Japan
| | | | | | - Amane Kozuki
- Department of Cardiology, Osaka Saiseikai Nakatsu Hospital, Osaka, Japan
| | - Satoaki Matoba
- Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Successful Surgical Treatment of an Infected Thoracoabdominal Aneurysm Accompanied with Leriche Syndrome. Case Rep Surg 2019; 2019:1628157. [PMID: 31179150 PMCID: PMC6501254 DOI: 10.1155/2019/1628157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/05/2019] [Accepted: 04/01/2019] [Indexed: 11/17/2022] Open
Abstract
A 56-year-old man presenting with massive melena and loss of consciousness was diagnosed with an infected thoracoabdominal aneurysm, an aortoduodenal fistula, and Leriche syndrome following an evaluation by computed tomography. Emergency surgery for uncontrolled infection included the reconstruction of the superior mesenteric and bilateral renal arteries using a four-branched graft. The aortoduodenal fistula was resected after omental filling, and an enterostomy was performed for feeding. Intestinal reconstruction was performed in two stages. The patient was discharged on postoperative day 48 and was without evidence of recurrence at 23 months postoperatively.
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Nanto K, Iida O, Fujihara M, Yokoi Y, Tomoi Y, Soga Y, Fujita M, Masuda M, Okamoto S, Ishihara T, Kanda T, Tsujimura T, Matsuda Y, Okuno S, Mano T. Five-Year Patency and its Predictors after Endovascular Therapy for Aortoiliac Occlusive Disease. J Atheroscler Thromb 2019; 26:989-996. [PMID: 30996200 PMCID: PMC6845694 DOI: 10.5551/jat.45617] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Although current guidelines recommend surgical revascularization as the first-line therapy for chronic total occlusion of the abdominal aorta (Leriche syndrome), endovascular therapy (EVT) has been increasingly utilized because of the development of new technologies and techniques. EVT has demonstrated durable midterm outcomes for aortoiliac occlusive disease (AIOD). Nonetheless, little is known regarding their long-term outcomes and predictors of restenosis. Methods: We retrospectively analyzed a multicenter database of 64 consecutive patients (age, 73 ± 10 years; 64% male; 22% critical limb ischemia) undergoing EVT for aortoiliac occlusive disease between September 2005 and March 2016. The outcome measures were primary and secondary patency, following EVT, calculated using the Kaplan–Meier method. Independent predictors associated with restenosis were assessed using Cox proportional hazard regression model. Results: Technical success was achieved in 61 patients (95%). In total, 214 stents (192 self-expandable stents, 22 balloon-expandable stents) were implanted. During the follow-up of 33 ± 28 months, 11 patients experienced loss of patency. The primary patency rates were 88%, 70%, and 70% at 1, 3, and 5 years, respectively. The secondary patency rates were 98%, 87%, and 77% at 1, 3, and 5 years, respectively. In Cox regression analysis, E-Luminexx stent use (in 29 patients, 48%) was associated with restenosis [hazard ratio, 4.41, P = 0.038]. Conclusion: In this retrospective study, EVT for AIOD demonstrated favorable 5-year patency. E-Luminexx stent implantation was associated with restenosis in this population.
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Affiliation(s)
| | - Osamu Iida
- Cardiovascular Center, Kansai Rosai Hospital
| | | | | | - Yusuke Tomoi
- Department of Cardiology, Kokura Memorial Hospital
| | | | - Masashi Fujita
- Department of Onco-cardiology, Osaka International Cancer Institute
| | | | | | | | | | | | | | - Shota Okuno
- Cardiovascular Center, Kansai Rosai Hospital
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External Iliac Occlusion Does Not Preclude Endovascular Management of Aortoiliac Disease-Technique and Evolution of Therapy. Ann Vasc Surg 2018; 53:184-189. [PMID: 30053550 DOI: 10.1016/j.avsg.2018.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 06/06/2018] [Accepted: 06/12/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Controversy remains over how to best manage chronic total occlusions of the aortoiliac (AI) system. Uncovered stents are the traditional choice but offer less durability in theory with the risk of stent ingrowth. External iliac artery (EIA) occlusions are challenging due to access difficulty. METHODS We performed a retrospective study of patients who had undergone endovascular AI intervention between December, 2014 and March, 2017 for Trans-Atlantic Inter-Society Consensus D lesions. The primary study end point was overall survival. Secondary end points included primary assisted or secondary patency and procedural complications. RESULTS Twenty-one patients were identified in the 22-month period that underwent recanalization of at least 1 iliac segment, using Atrium iCAST in the aorta and common iliac segments and/or Viabahn stents in the external iliac arteries. Overall AI patency was 100% (mean 6.8 months). Six AI bifurcation advancements were performed (primary patency 100%, mean 8 months). Eight patients with EIA occlusion underwent total percutaneous revascularization (primary patency 88%, secondary patency 100% mean 6 months). Five outflow procedures were performed concurrent to the AI recanalization. Two patients (15.4%) died of cardiovascular events. No access site complications were observed in the cohort. CONCLUSIONS AI occlusive disease remains a surgical challenge. Although uncovered stents are a common therapy for revascularization of this vascular bed, our experience with balloon-expanding and self-expanding covered stents suggests they may be used to good effect with minimal complications in the intermediate term.
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Revascularization of Chronic Total Occlusion of the Infrarenal Aorta in a Patient with Triple Vessel Disease: Report of a Case Treated by Endovascular Approach. Case Rep Cardiol 2017; 2017:7983748. [PMID: 29057126 PMCID: PMC5606100 DOI: 10.1155/2017/7983748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 06/28/2017] [Indexed: 11/17/2022] Open
Abstract
Surgical management of advance aortoiliac occlusive disease is time-tested and a widely practiced strategy, particularly when there is significant coronary artery disease associated with aortoiliac occlusive disease. The technological advances in the field of percutaneous techniques have facilitated the use of nonsurgical endovascular alternatives for peripheral arterial disease in patients with significant comorbidities at high surgical risk, as illustrated in our case report. We report a case of chronic total occlusion of the aorta that was treated percutaneously with endovascular stenting. We also discuss the specific technique used in this procedure.
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Morisaki K, Yamaoka T, Iwasa K, Ohmine T. Outcomes of Endovascular Therapy for Infrarenal Aortic Occlusion of TASC II D Classification. Ann Vasc Surg 2017; 43:203-209. [DOI: 10.1016/j.avsg.2017.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 12/23/2016] [Accepted: 02/12/2017] [Indexed: 10/20/2022]
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Comparison of transfemoral vs transbrachial approach for angioplastic reconstruction of chronic total aortoiliac occlusion. Indian Heart J 2016; 68 Suppl 2:S72-S76. [PMID: 27751334 PMCID: PMC5067767 DOI: 10.1016/j.ihj.2016.04.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 04/08/2016] [Accepted: 04/26/2016] [Indexed: 11/03/2022] Open
Abstract
The angioplasty of chronic total aortoiliac occlusion using transfemoral is controversial. From March 2014 to December 2015, four consecutive patients (4 males; mean age 58.2±6.8 years; age of range 51-65 years) underwent angioplasty and stenting of TASC-D occlusion. In all the cases, we failed to cross from femoral approach. On switching over to left brachial access, angioplasty was done successfully in all. There was no procedural site complication or clinical evidence cerebral thromboembolism. Self-expandable stents were implanted in all with adequate pre and post dilation. Complete revascularisation was achieved in two cases and in other two cases, the angioplasty to the left aortoiliac carina was staged. Therefore, it is better to avoid femoral approach as initial step to cross chronic TASC 2007 type D (chronic total aortoiliac occlusion or called extensive aortoiliac disease) because of failure to cross retrogradely due to subintimal course of guide wire leading to retrograde aortic dissection.
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23
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Van Haren RM, Goldstein LJ, Velazquez OC, Karmacharya J, Bornak A. Endovascular treatment of TransAtlantic Inter-Society Consensus D aortoiliac occlusive disease using unibody bifurcated endografts. J Vasc Surg 2016; 65:398-405. [PMID: 27765483 DOI: 10.1016/j.jvs.2016.08.084] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 08/03/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Aortobifemoral bypass has been the gold standard treatment for extensive aortoiliac occlusive disease. Endovascular therapy and stenting of aortic and iliac occlusive lesions has proven to be efficacious, especially when dealing with short segment lesions. Endovascular treatment of TransAtlantic Inter-Society Consensus II (TASC) D aortoiliac occlusive lesions remains a challenge, but a valuable treatment option in poor surgical candidates. We present our operative technique and midterm results in treating TASC D aortoiliac occlusive disease using unibody bifurcated endografts. METHODS We performed a retrospective review of patients with TASC D aortoiliac occlusive disease who underwent transfemoral endovascular revascularization with the Endologix Powerlink unibody bifurcated endograft (Endologix, Irvine, Calif). Demographic data, operative details, and outcomes were collected. Paired t-tests were performed to compare preoperative and postoperative ankle brachial indexes. RESULTS Between March 2009 and July 2011, 10 high-risk patients (8 male and 2 female) for a traditional aortobifemoral bypass were treated using this endovascular technique. The mean age was 59 ± 6 years (range, 50-69 years). All patients presented with rest pain, and four with tissue loss. Technical success was 100%, with two patients requiring brachial access and eight patients requiring additional stent placement. Postoperatively, all patients reported clinical improvement with resolution of ischemic symptoms. Mean improvement ankle brachial index was 0.50 ± 0.08 (P = .028) and 0.50 ± 0.01 (P = .034) in the left and right legs, respectively. Mean follow-up time was 40 ± 24 months (range, 4-81 months). The primary and secondary patency rates were 80% and 100%, respectively. Complications requiring early reintervention occurred in two patients and included one expanding hematoma from the percutaneous access site and one acute iliac artery thrombosis. Additionally, one patient underwent repeat angioplasty/stenting for threatened endograft limbs at 4 months. One patient expired during follow-up from an unrelated cardiac cause 19 weeks postoperatively. CONCLUSIONS This series demonstrates that endovascular repair using a unibody bifurcated endograft for TASC D aortoiliac occlusive disease is feasible, effective, and has excellent midterm patency. It should be considered an effective treatment option when the disease process involves the aorta, in particular if the patient is surgically unfit for a traditional aortobifemoral bypass. The unibody configuration preserves the anatomic aortic bifurcation, which is particularly important in patients with peripheral occlusive disease who are deemed to undergo subsequent endovascular interventions.
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Affiliation(s)
- Robert M Van Haren
- Vascular and Endovascular Surgery, University of Miami Miller School of Medicine, Miami, Fla
| | - Lee J Goldstein
- Vascular and Endovascular Surgery, University of Miami Miller School of Medicine, Miami, Fla
| | - Omaida C Velazquez
- Vascular and Endovascular Surgery, University of Miami Miller School of Medicine, Miami, Fla
| | - Jagajan Karmacharya
- Vascular and Endovascular Surgery, University of Miami Miller School of Medicine, Miami, Fla
| | - Arash Bornak
- Vascular and Endovascular Surgery, University of Miami Miller School of Medicine, Miami, Fla.
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Kubota H, Kato T, Nomura T, Keira N, Tatsumi T. Successful endovascular treatment with GuideLiner catheter of chronic aortic occlusion with severe calcification. Cardiovasc Interv Ther 2016; 32:137-141. [DOI: 10.1007/s12928-016-0377-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 01/05/2016] [Indexed: 10/22/2022]
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Kasemi H, Marino M, Dionisi CP, Di Angelo CL, Fadda GF. Seven-Year Approach Evolution of the Aortoiliac Occlusive Disease Endovascular Treatment. Ann Vasc Surg 2016; 30:277-85. [DOI: 10.1016/j.avsg.2015.07.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 06/12/2015] [Accepted: 07/07/2015] [Indexed: 10/23/2022]
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Georgakarakos E, Argyriou C, Georgiadis GS, Ioannou CV, Lazarides MK. Immediate hemodynamic changes after revascularization of complete infrarenal aortic occlusion: A classic issue revisited. Med Hypotheses 2015; 87:22-7. [PMID: 26826635 DOI: 10.1016/j.mehy.2015.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 12/07/2015] [Accepted: 12/15/2015] [Indexed: 11/19/2022]
Abstract
Chronic total occlusion of the infrarenal aorta (CTOA) is a rare disease, characterized by severe impairment of limb perfusion. It is advocated that revascularization may improve survival rates, presumably due to improved cardiovascular performance; however no experimental or clinical data exist to identify a clear causative correlation and provide a relevant pathophysiologic background. Therefore we conducted a pilot study based on pulse wave analysis to detect the hemodynamic changes immediately after revascularization, in a group of six consecutive patients with CTOA. All patients were subjected to non-invasive measurements 1 day before surgery and at the end of the 1st postoperative month. Pulse wave analysis was performed noninvasively with a novel validated brachial cuff-based automatic oscillometric device. All patients had markedly preoperative high Augmentation Index (adjusted at heart rate 75 beats/min, AI@75). The AI@75 decreased from 46 ± 6.6 preoperatively to 24 ± 5.7 (p 0.0002). Wave reflection magnitude decreased from 72.3 ± 5.2% to 63 ± 6.7% (p 0.02). Cardiax index increased from 2.8 ± 1.2 to 3.4 ± 1.2l/min × 1/m(2) (p 0.41). Pulse wave velocity remained practically unchanged post-interventionally. These findings show that central aorta hemodynamics can be improved immediately following revascularization procedures in patients with complete occlusion of the entire length of the infrarenal aorta and can constitute the background of improved postoperative life-expectancy.
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Affiliation(s)
- Efstratios Georgakarakos
- Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece.
| | - Christos Argyriou
- Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - George S Georgiadis
- Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - Christos V Ioannou
- Vascular Surgery Department, University of Crete Medical School, Heraklion, Crete, Greece
| | - Miltos K Lazarides
- Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
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The Antegrade Approach Using Transbrachial Access Improves Technical Success Rate of Endovascular Recanalization of TASC C-D Aortoiliac Occlusion in Case of Failed Femoral Access. Ann Vasc Surg 2015; 29:1346-52. [DOI: 10.1016/j.avsg.2015.04.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 04/13/2015] [Accepted: 04/26/2015] [Indexed: 11/23/2022]
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Kazmi SSH, Jørgensen JJ, Sundhagen JO, Krog AH, Flørenes TL, Kollerøs D, Abdelnoor M. A comparative cohort study of totally laparoscopic and open aortobifemoral bypass for the treatment of advanced atherosclerosis. Vasc Health Risk Manag 2015; 11:541-7. [PMID: 26425098 PMCID: PMC4583109 DOI: 10.2147/vhrm.s92671] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Totally laparoscopic aortobifemoral bypass (LABF) procedure has been shown to be feasible for the treatment of advanced aortoiliac occlusive disease (AIOD). This study compares the LABF with the open aortobifemoral bypass (OABF) operation. Methods In this prospective comparative cohort study, 50 consecutive patients with type D atherosclerotic lesions in the aortoiliac segment were treated with an LABF operation. The group was compared with 30 patients who were operated on with the OABF procedure for the same disease and time period. We had an explanatory strategy, and our research hypothesis was to compare the two surgical procedures based on a composite event (all-cause mortality, graft occlusion, and systemic morbidity). Stratification analysis was performed by using the Mantel–Haenszel method with the patient–time model. Cox multivariate regression method was used to adjust for confounding effect after considering the proportional hazard assumption. Cox proportional cause-specific hazard regression model was used for competing risk endpoint. Results There was a higher frequency of comorbidity in the OABF group. A significant reduction of composite event, 82% (hazard ratio 0.18; 95% CI 0.08–0.42, P=0.0001) was found in the LABF group when compared with OABF group, during a median follow-up time period of 4.12 years (range from 1 day to 9.32 years). In addition, less operative bleeding and shorter length of hospital stay were observed in the LABF group when compared with the OABF group. All components of the composite event showed the same positive effect in favor of LABF procedure. Conclusion LABF for the treatment of AIOD, Trans-Atlantic Inter-Society Consensus II type D lesions, seems to result in a less composite event when compared with the OABF procedure. To conclude, our results need to be replicated by a randomized clinical trial.
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Affiliation(s)
- Syed S H Kazmi
- Department of Vascular Surgery, Heart, Lung and Vascular Disease Clinic, Oslo University Hospital, Oslo, Norway
| | - Jørgen Junkichi Jørgensen
- Department of Vascular Surgery, Heart, Lung and Vascular Disease Clinic, Oslo University Hospital, Oslo, Norway ; Faculty of Medicine, Oslo University, Oslo, Norway
| | - Jon Otto Sundhagen
- Department of Vascular Surgery, Heart, Lung and Vascular Disease Clinic, Oslo University Hospital, Oslo, Norway
| | - Anne Helene Krog
- Department of Vascular Surgery, Heart, Lung and Vascular Disease Clinic, Oslo University Hospital, Oslo, Norway ; Faculty of Medicine, Oslo University, Oslo, Norway
| | - Tor L Flørenes
- Department of Vascular Surgery, Heart, Lung and Vascular Disease Clinic, Oslo University Hospital, Oslo, Norway
| | - Dagfinn Kollerøs
- Department of Anaesthesiology, Oslo University Hospital, Oslo, Norway
| | - Michael Abdelnoor
- Faculty of Medicine, Oslo University, Oslo, Norway ; Unit of Epidemiology and Biological Statistics, Faculty of Medicine, Oslo University, Oslo, Norway ; Centre for Clinical Heart Research, Faculty of Medicine, Oslo University, Oslo, Norway
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Affiliation(s)
- Nathan J Aranson
- From Division of Vascular and Endovascular Surgery, Department of Surgery, Massachusetts General Hospital, Boston
| | - Michael T Watkins
- From Division of Vascular and Endovascular Surgery, Department of Surgery, Massachusetts General Hospital, Boston.
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Abstract
Treatment of severe aortoiliac disease has dramatically evolved from a dependence on open aortobifemoral grafting to hybrid and endovascular only approaches. Open surgery has been the gold standard treatment of severe aortoiliac disease with excellent patency rates, but with increased length of stay and major complications. In contrast, endovascular interventions can successfully treat almost any lesion with decreased risk, compared to open surgery. Although primary patency rates remain inferior, secondary endovascular interventions are often minor procedures resulting in comparable long-term outcomes. The risks of renal insufficiency, embolization and access complications are not insignificant; however, most can be prevented or managed without significant clinical consequence. Endovascular therapies should be considered a first-line treatment option for all patients with aortoiliac disease, especially those with high-risk cardiovascular comorbidities.
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Affiliation(s)
- Daniel G Clair
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
- Department of Vascular Surgery, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jocelyn M Beach
- Department of Vascular Surgery, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA
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Society for Vascular Surgery practice guidelines for atherosclerotic occlusive disease of the lower extremities: management of asymptomatic disease and claudication. J Vasc Surg 2015; 61:2S-41S. [PMID: 25638515 DOI: 10.1016/j.jvs.2014.12.009] [Citation(s) in RCA: 523] [Impact Index Per Article: 58.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Peripheral arterial disease (PAD) continues to grow in global prevalence and consumes an increasing amount of resources in the United States health care system. Overall rates of intervention for PAD have been rising steadily in recent years. Changing demographics, evolution of technologies, and an expanding database of outcomes studies are primary forces influencing clinical decision making in PAD. The management of PAD is multidisciplinary, involving primary care physicians and vascular specialists with varying expertise in diagnostic and treatment modalities. PAD represents a broad spectrum of disease from asymptomatic through severe limb ischemia. The Society for Vascular Surgery Lower Extremity Practice Guidelines committee reviewed the evidence supporting clinical care in the treatment of asymptomatic PAD and intermittent claudication (IC). The committee made specific practice recommendations using the GRADE (Grades of Recommendation Assessment, Development and Evaluation) system. There are limited Level I data available for many of the critical questions in the field, demonstrating the urgent need for comparative effectiveness research in PAD. Emphasis is placed on risk factor modification, medical therapies, and broader use of exercise programs to improve cardiovascular health and functional performance. Screening for PAD appears of unproven benefit at present. Revascularization for IC is an appropriate therapy for selected patients with disabling symptoms, after a careful risk-benefit analysis. Treatment should be individualized based on comorbid conditions, degree of functional impairment, and anatomic factors. Invasive treatments for IC should provide predictable functional improvements with reasonable durability. A minimum threshold of a >50% likelihood of sustained efficacy for at least 2 years is suggested as a benchmark. Anatomic patency (freedom from restenosis) is considered a prerequisite for sustained efficacy of revascularization in IC. Endovascular approaches are favored for most candidates with aortoiliac disease and for selected patients with femoropopliteal disease in whom anatomic durability is expected to meet this minimum threshold. Conversely, caution is warranted in the use of interventions for IC in anatomic settings where durability is limited (extensive calcification, small-caliber arteries, diffuse infrainguinal disease, poor runoff). Surgical bypass may be a preferred strategy in good-risk patients with these disease patterns or in those with prior endovascular failures. Common femoral artery disease should be treated surgically, and saphenous vein is the preferred conduit for infrainguinal bypass grafting. Patients who undergo invasive treatments for IC should be monitored regularly in a surveillance program to record subjective improvements, assess risk factors, optimize compliance with cardioprotective medications, and monitor hemodynamic and patency status.
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Nomura A, Nagashima M, Tomoi Y, Tosaka A, Soga Y. Successful endovascular treatment for high take off aorto-iliac occlusive disease. Intern Med 2015; 54:921-4. [PMID: 25876573 DOI: 10.2169/internalmedicine.54.2920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 73-year-old man with a history of intermittent claudication for the previous six years visited our hospital. His ankle-brachial index (ABI) was very low on both sides, and computed tomography (CT) indicated bilateral aorto-iliac occlusive disease (AIOD). As he refused to undergo open surgery, endovascular treatment (EVT) was administered. After the first and second EVT sessions, the intermittent claudication improved completely. In addition, the ABI normalized (right: 1.01, left: 0.99), and CT demonstrated full expansion of the stents. His post-EVT course was uneventful for 18 months. The use of EVT to treat AIOD is technically feasible and may serve as a potential treatment option for patients with an inoperable condition.
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Affiliation(s)
- Akihiro Nomura
- Division of Cardiovascular Medicine, Kanazawa University Graduate School of Medicine, Japan
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Percutaneous treatment of chronic distal aortic occlusion: a viable option. JACC Cardiovasc Interv 2014; 7:e185-6. [PMID: 25457059 DOI: 10.1016/j.jcin.2014.06.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 06/08/2014] [Indexed: 11/21/2022]
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Grimme F, Reijnen M, Pfister K, Martens J, Kasprzak P. Polytetrafluoroethylene Covered Stent Placement for Focal Occlusive Disease of the Infrarenal Aorta. Eur J Vasc Endovasc Surg 2014; 48:545-50. [DOI: 10.1016/j.ejvs.2014.08.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 08/04/2014] [Indexed: 11/29/2022]
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Mujtaba M, Chhabra L, Abdulbaki AM, Sadiq I. Balloon angioplasty with secondary stenting for chronically occluded abdominal aorta in a high-risk patient. BMJ Case Rep 2014; 2014:bcr-2014-204959. [PMID: 25056303 DOI: 10.1136/bcr-2014-204959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Mohmmadtokir Mujtaba
- Department of Cardiology, Hartford Hospital, University of Connecticut School of Medicine, Hartford, Connecticut, USA
| | - Lovely Chhabra
- Hartford Hospital, University of Connecticut School of Medicine, Hartford, Connecticut, USA
| | | | - Immad Sadiq
- Department of Cardiology, Hartford Hospital, University of Connecticut School of Medicine, Hartford, Connecticut, USA
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Georgakarakos E, Kapoulas K. Percutaneous Endovascular Recanalization of a Thrombosed Aortic Graft Limb with Stent Placement. AORTA : OFFICIAL JOURNAL OF THE AORTIC INSTITUTE AT YALE-NEW HAVEN HOSPITAL 2014; 2:116-20. [PMID: 26798727 DOI: 10.12945/j.aorta.2014.14-010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 06/01/2014] [Indexed: 11/18/2022]
Abstract
Common practice in recanalization of a thrombosed prosthetic graft limb in an aortoiliac bypass focuses on balloon-catheter thrombectomy and angiographic exploration followed either by open surgical revision or endovascular management. This report describes the technique of percutaneous endovascular recanalization of an early thrombosed aortic graft limb with stent placement and subsequent restoration of patency and adequate limb perfusion, which remains patent after one year. Percutaneous intervention with stent placement and angioplasty for early graft limb recanalization avoids femoral incisions, and complications or morbidity associated with open surgery, while permitting rapid mobilization of the patient.
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Affiliation(s)
- Efstratios Georgakarakos
- Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - Konstantinos Kapoulas
- Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
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Yuan L, Bao J, Zhao Z, Feng X, Lu Q, Jing Z. Transbrachial and femoral artery approach endovascular therapy for flush infrarenal aortic occlusion. Eur J Vasc Endovasc Surg 2014; 48:46-52. [PMID: 24835979 DOI: 10.1016/j.ejvs.2014.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 04/05/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The purpose of this study is to report the efficacy of transbrachial and femoral artery approach endovascular therapy with catheter-directed thrombolysis (CDT) and adjunctive therapy for flush infrarenal aortic occlusion (FIAO). MATERIALS AND METHODS From March 2012 to December 2013, 11 consecutive patients (9 males; mean age 68 years; range 54-80 years) were submitted to endovascular therapy for FIAO. All patients were treated with CDT initially and then adjunctive endovascular treatments were performed to correct the underlying lesions. RESULTS Complete reconstruction of occluded aortoiliac arteries was successfully achieved in 81.8% (9/11) of patients. Left brachial and bilateral femoral arterial accesses were obtained in nine patients, and brachial and unilateral femoral in two patients. The residual lesions after CDT were corrected in nine patients and concomitant endovascular recanalization of superficial femoral artery was performed in two patients. Self-expandable stents were implanted in the all aortoiliac lesions with pre- and post-dilation. No renal or distal runoff embolization was seen during intraoperative angiography. Seven (7/9) patients with rest pain or tissue loss showed significant improvements in symptoms and two (2/9) patients with intermittent claudication gained an improved walking distance. The ABI rose significantly between pre- and post-procedure (0.84 ± 0.18 vs. 0.44 ± 0.13 on the right leg, p < .01; 0.89 ± 0.23 vs. 0.48 ± 0.16 on the left, p < .01). CONCLUSIONS Transbrachial and femoral artery approach endovascular therapy for FIAO offers an alternative to surgical reconstruction with immediate outcomes.
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Affiliation(s)
- L Yuan
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, PR China
| | - J Bao
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, PR China.
| | - Z Zhao
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, PR China
| | - X Feng
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, PR China
| | - Q Lu
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, PR China
| | - Z Jing
- Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, PR China.
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Abstract
Purpose: To evaluate the outcomes of juxtarenal aortic occlusion (JRAO), a review of 15 patients who underwent aortic bypass replacement following aortorenal thrombectomy, especially focusing on the safety of suprarenal aortic clamping or transient aortic compression, was undertaken. Materials and Methods: During the period of June 2001 to November 2012, 15 patients with JRAO (chronic 10, acute 5) were analyzed retrospectively. JRAO with combined stenosis of the renal artery was found in 2 patients, renal artery thrombus in 8 patients, and normal in 5 patients. Results: All patients were males. Mean age was 61.7±11.2 years. There were 14 aortobifemoral bypass grafting and 1 aortobiiliac bypass grafting. Six Dacron and 9 PTFE artificial Y-grafts were implanted to the aorta with end-to-end anastomosis in the proximal aorta. Suprarenal aortic clamping was performed in 7 patients, supraceliac clamping in 2 patients, and transient aortic compression in 6 patients. There were 13 cases with aortic clamping time <10 minutes and 2 cases with >10 minutes. Thrombectomy of the aorta and renal artery was performed in 10 (66.7%) patients. There were no operative mortality cases. The perioperative morbidity rate was 26.7% (4/15). Preoperative renal function was impaired in four patients. The renal functions of these cases were recovered postoperatively. Conclusion: Aortic bypass replacement following aortorenal thrombectomy with suprarenal aortic clamping or transient aortic compression for JRAO is the optimal treatment. It is important to focus on short renal ischemic time during suprarenal aortic clamping for prevention of renal damage. It provides unmatched perioperative and long-term results.
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Affiliation(s)
- Hee Jae Jun
- Department of Thoracic and Cardiovascular Surgery, Inje University Haeundae Paik Hospital, Busan, Korea
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Endovascular therapy for long-segment atherosclerotic aortoiliac occlusion. J Vasc Surg 2014; 59:663-8. [DOI: 10.1016/j.jvs.2013.09.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 08/28/2013] [Accepted: 09/04/2013] [Indexed: 11/20/2022]
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Dohi T, Iida O, Okamoto S, Nanto K, Nanto S, Uematsu M. Mid-term clinical outcome following endovascular therapy in patients with chronic aortic occlusion. Cardiovasc Interv Ther 2013; 28:327-32. [DOI: 10.1007/s12928-013-0173-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 03/19/2013] [Indexed: 10/27/2022]
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Kim TH, Ahn JH, Kim DH. A successful retrograde re-entry at aorta using the Outback LTD catheter for a bilateral common iliac artery occlusion. Catheter Cardiovasc Interv 2012; 81:E250-4. [PMID: 22639463 DOI: 10.1002/ccd.24506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 05/20/2012] [Indexed: 11/09/2022]
Abstract
The Outback LTD re-entry catheter system has become a valuable tool for peripheral intervention and it has been widely used for variable peripheral chronic total occlusion (CTO). However, its use in the setting of the aorta was restricted because of concerns of bleeding risks resulting from re-entry puncture or ballooning. This report presents a case of successful re-entry using the Outback LTD Re-Entry Catheter (Cordis, Bridgewater, New Jersy) at the aorta in a patient with bilateral common iliac artery occlusion.
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Affiliation(s)
- Tae-Hoon Kim
- Division of Cardiology, Chungdam Wooridul Hospital, Seoul, South Korea
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Yang SS, Park KM, Roh YN, Park YJ, Kim DI, Kim YW. Renal and abdominal visceral complications after open aortic surgery requiring supra-renal aortic cross clamping. JOURNAL OF THE KOREAN SURGICAL SOCIETY 2012; 83:162-70. [PMID: 22977763 PMCID: PMC3433553 DOI: 10.4174/jkss.2012.83.3.162] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/21/2012] [Accepted: 07/23/2012] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study was to assess renal or abdominal visceral complications after open aortic surgery (OAS) requiring supra-renal aortic cross clamping (SRACC). METHODS We retrospectively reviewed the medical records of 66 patients who underwent SRACC. Among them, 17 followed supra-celiac aortic cross clamping (SCACC) procedure, 42 supra-renal, and 7 inter-renal aorta. Postoperative renal, hepatic or pancreatic complications were investigated by reviewing levels of serum creatinine and hepatic and pancreatic enzymes. Preoperative clinical and operative variables were analyzed to determine risk factors for postoperative renal insufficiency (PORI). RESULTS Indications for SRACC were 25 juxta-renal aortic occlusion and 41 aortic aneurysms (24 juxta-renal, 12 supra-renal and 5 type IV thoraco-abdominal). The mean duration of renal ischemic time (RIT) was 30.1 ± 22.2 minutes (range, 3 to 120 minutes). PORI developed in 21% of patients, including four patients requiring hemodialysis (HD). However, chronic HD was required for only one patient (1.5%) who had preoperative renal insufficiency. RIT ≥ 25 minutes and SCACC were significant risk factors for PORI development by univariate analysis, but not by multivariate analysis. Serum pancreatic and hepatic enzyme was elevated in 41% and 53% of the 17 patients who underwent SCACC, respectively. CONCLUSION Though postoperative renal or abdominal visceral complications developed often after SRACC, we found that most of those complications resolved spontaneously unless there was preexisting renal disease or the aortic clamping time was exceptionally long.
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Affiliation(s)
- Shin-Seok Yang
- Division of Vascular Surgery, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Primary balloon expandable polytetrafluoroethylene-covered stenting of focal infrarenal aortic occlusive disease. J Vasc Surg 2012; 55:674-8. [DOI: 10.1016/j.jvs.2011.08.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/09/2011] [Accepted: 08/21/2011] [Indexed: 11/20/2022]
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