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1.
Rev. Soc. Cardiol. Estado de Säo Paulo ; 29(4): 356-361, out.-dez. 2019. ilus
Article in Portuguese | LILACS | ID: biblio-1047212

ABSTRACT

O desenvolvimento das salas cirúrgicas híbridas permitiu que operações de abordagem cirúrgica convencional pudessem ser realizadas e complementadas com a abordagem percutânea e endovascular, criando uma nova forma de tratar os pacientes por meio de cirurgias híbridas. Os procedimentos híbridos permitem que cirurgiões e cardiologistas intervencionistas possam associar suas expertises para tratar, da melhor forma possível, os pacientes com doenças cada vez mais complexas e avançadas, com melhores resultados, reduzindo a morbidade e mortalidade perioperatória e permitindo recuperação mais rápida


The development of hybrid operating rooms allowed that conventional surgical approach operations could be performed and complemented with the percutaneous and endovascular approach, creating a new way of treating patients through hybrid surgeries. Hybrid procedures allow surgeons and interventional cardiologists to combine their expertise to best treat patients with increasingly complex and advanced diseases, with better outcomes, reducing perioperative morbidity and mortality and allowing faster recovery


Subject(s)
Cardiac Surgical Procedures/methods , Myocardial Revascularization/methods , Operating Rooms , Aorta, Thoracic , Prostheses and Implants , Aortography/methods , Coronary Artery Bypass/methods , Drug-Eluting Stents , Percutaneous Coronary Intervention/methods
3.
Rev. bras. cir. cardiovasc ; 34(1): 101-103, Jan.-Feb. 2019. tab, graf
Article in English | LILACS | ID: biblio-985240

ABSTRACT

Abstract Aorto-atrial fistulas due to cardiac trauma are rare, and survivors require immediate surgical correction. Here, we report a case of an aorto-right atrial fistula due to penetrating trauma after a 16-year evolution, which developed symptoms of acute coronary syndrome and was treated with myocardial revascularization and correction of the aorto-cameral fistula.


Subject(s)
Humans , Male , Aged , Aortic Diseases/diagnostic imaging , Arterio-Arterial Fistula/diagnostic imaging , Acute Coronary Syndrome/diagnostic imaging , Aortic Diseases/surgery , Aortic Diseases/etiology , Wounds, Stab/complications , Aortography/methods , Cineangiography/methods , Echocardiography/methods , Arterio-Arterial Fistula/surgery , Arterio-Arterial Fistula/etiology , Coronary Angiography/methods , Electrocardiography , Acute Coronary Syndrome/surgery , Acute Coronary Syndrome/etiology , Heart Atria/injuries , Heart Atria/diagnostic imaging
4.
Rev. Soc. Cardiol. Estado de Säo Paulo ; 29(1 (Supl)): 97-99, jan.-mar. 2019. ilus
Article in English, Portuguese | LILACS | ID: biblio-1015196

ABSTRACT

A dissecção aguda da aorta (DAA) é uma emergência cardiovascular que acarreta mortalidade alta, 50% a 68% em 48 horas e até 85% em um mês. Este caso refere-se a um homem com 65 anos, ex-tabagista, que teve precordialgia com queimação irradiada para membros superiores, associada a náuseas. O eletrocardiograma mostrou upradesnivelamento ST em parede inferolateral. Recebeu tratamento para infarto agudo do miocárdio com AAS, clopidogrel, enoxaparina e tenecteplase. O cateterismo cardíaco evidenciou DAA tipo A de Stanford e coronárias sem obstruções. O ecocardiograma transtorácico mostrou insuficiência aórtica moderada e dissecção estendendo-se da raiz da aorta até a porção descendente proximal. O paciente foi submetido à cirurgia de Bentall de Bono e enxerto safeno-coronário direito devido à obstrução durante a cirurgia, com boa evolução pós-operatória. A DAA continua a ser um desafio diagnóstico na sala de emergência. De acordo com International Registry of Acute Aortic Dissection, os achados clínicos nas dissecções tipo A incluem dor torácica súbita e intensa (86%), irradiação dorsal (47%), sopro de insuficiência aórtica (44%), assimetria de pressão arterial (50%) e pulsos (30%), alargamento de mediastino à radiografia de tórax (63%) e supradesnivelamento de ST (4%), majoritariamente por oclusão de óstio da coronária direita. O caso destaca-se pela evolução favorável a despeito do tratamento com potencial catastrófico inicialmente direcionado para doença coronariana aguda aterotrombótica


Acute Aortic Dissection (AAD) is a cardiovascular emergency that entails high mortality - 50-68% in 48 hours and up to 85% in one month. This case involves a 65-year-old male ex-smoker who had onset of precordial pain with a burning sensation, radiating into the upper limbs, in combination with nausea. Electrocardiogram showed inferolateral wall ST elevation. He received treatment for acute myocardial infarction with acetylsalicylic acid, clopidogrel, enoxaparin and tenecteplase. Cardiac catheterization revealed Stanford type A AAD and unobstructed coronary arteries. Transthoracic echocardiogram showed moderate aortic regurgitation and aortic dissection extending from the aortic root to its proximal descending portion. The patient underwent a Bentall-De Bono procedure and right coronary artery bypass grafting using the saphenous vein due to obstruction during surgery, with good postoperative progress. AAD remains a diagnostic challenge in the emergency room. According to the International Registry of Acute Aortic Dissection, clinical findings in type A dissections include: sudden severe chest pain (86%), dorsal irradiation (47%), aortic regurgitation murmur (44%), asymmetric blood pressure (50%) or pulse (30%), mediastinal widening on chest radiograph (63%) and ST-segment elevation (4%), mainly due to right coronary ostium occlusion. The case is distinctive because of favorable progress in spite of the potentially catastrophic treatment initially targeting acute coronary atherothrombotic disease


Subject(s)
Humans , Male , Aged , Aorta , Dissection , Myocardial Infarction/complications , Myocardial Infarction/diagnosis , Aortic Valve Insufficiency/complications , Aortography/methods , Echocardiography/methods , Cardiac Catheterization/methods , Cardiovascular Diseases/diagnosis , Risk Factors , Electrocardiography/methods
5.
Article in English | WPRIM | ID: wpr-765336

ABSTRACT

OBJECTIVE: Aberrant right subclavian artery (ARSA) is a rare anatomical variant of the origin of the right subclavian artery. ARSA is defined as the right subclavian artery originating as the final branch of the aortic arch. The purpose of this study is to determine the prevalence and the anatomy of ARSA evaluated with computed tomography (CT) angiography. METHODS: CT angiography was performed in 3460 patients between March 1, 2014 and November 30, 2015 and the results were analyzed. The origin of the ARSA, course of the vessel, possible inadvertent ARSA puncture site during subclavian vein catheterization, Kommerell diverticula, and associated vascular anomalies were evaluated. We used the literature to review the clinical importance of ARSA. RESULTS: Seventeen in 3460 patients had ARSA. All ARSAs in 17 patients originated from the posterior aspect of the aortic arch and traveled along a retroesophageal course to the right thoracic outlet. All 17 ARSAs were located in the anterior portion from first to fourth thoracic vertebral bodies and were located near the right subclavian vein at the medial third of the clavicle. Only one of 17 patients presented with dysphagia. CONCLUSION: It is important to be aware ARSA before surgical approaches to upper thoracic vertebrae in order to avoid complications and effect proper treatment. In patients with a known ARSA, a right transradial approach for aortography or cerebral angiography should be changed to a left radial artery or transfemoral approach.


Subject(s)
Angiography , Aorta, Thoracic , Aortography , Catheterization , Catheters , Cerebral Angiography , Clavicle , Deglutition Disorders , Diverticulum , Humans , Korea , Prevalence , Punctures , Radial Artery , Subclavian Artery , Subclavian Vein , Thoracic Vertebrae
6.
Article in English | WPRIM | ID: wpr-788765

ABSTRACT

OBJECTIVE: Aberrant right subclavian artery (ARSA) is a rare anatomical variant of the origin of the right subclavian artery. ARSA is defined as the right subclavian artery originating as the final branch of the aortic arch. The purpose of this study is to determine the prevalence and the anatomy of ARSA evaluated with computed tomography (CT) angiography.METHODS: CT angiography was performed in 3460 patients between March 1, 2014 and November 30, 2015 and the results were analyzed. The origin of the ARSA, course of the vessel, possible inadvertent ARSA puncture site during subclavian vein catheterization, Kommerell diverticula, and associated vascular anomalies were evaluated. We used the literature to review the clinical importance of ARSA.RESULTS: Seventeen in 3460 patients had ARSA. All ARSAs in 17 patients originated from the posterior aspect of the aortic arch and traveled along a retroesophageal course to the right thoracic outlet. All 17 ARSAs were located in the anterior portion from first to fourth thoracic vertebral bodies and were located near the right subclavian vein at the medial third of the clavicle. Only one of 17 patients presented with dysphagia.CONCLUSION: It is important to be aware ARSA before surgical approaches to upper thoracic vertebrae in order to avoid complications and effect proper treatment. In patients with a known ARSA, a right transradial approach for aortography or cerebral angiography should be changed to a left radial artery or transfemoral approach.


Subject(s)
Angiography , Aorta, Thoracic , Aortography , Catheterization , Catheters , Cerebral Angiography , Clavicle , Deglutition Disorders , Diverticulum , Humans , Korea , Prevalence , Punctures , Radial Artery , Subclavian Artery , Subclavian Vein , Thoracic Vertebrae
7.
Arq. bras. cardiol ; 111(2): 193-202, Aug. 2018. tab, graf
Article in English | SES-SP, LILACS, SES-SP, SESSP-IDPCPROD, SES-SP | ID: biblio-950218

ABSTRACT

Abstract Background: Balloon post-dilatation (BPD) is often needed for optimizing transcatheter heart valve (THV) implantation, since paravalvular leak (PVL) after transcatheter aortic valve implantation is associated with poor outcome and mortality. Quantitative assessment of PVL severity before and after BPD is mandatory to properly assess PVL, thus improving implantation results and outcomes. Objective: To investigate a quantitative angiographic assessment of aortic regurgitation (AR) by videodensitometry before and after BPD. Methods: Videodensitometric-AR assessments (VD-AR) before and after BPD were analysed in 61 cases. Results: VD-AR decreased significantly from 24.0[18.0-30.5]% to 12.0[5.5-19.0]% (p < 0.001, a two-tailed p < 0.05 defined the statistical significance). The relative delta of VD-AR after BPD ranged from -100% (improvement) to +40% (deterioration) and its median value was -46.2%. The frequency of improvement, no change, and deterioration were 70% (n = 43), 25% (n = 15) and 5% (n = 3), respectively. Significant AR (VD-AR > 17%) was observed in 47 patients (77%) before and in 19 patients (31%) after BPD. Conclusions: VD-AR after THV implantation provides a quantitative assessment of post-TAVI regurgitation and can help in the decision-making process on performing BPD and in determining its efficacy.


Resumo Fundamento: A pós-dilatação com balão (PDB) é normalmente necessária para otimização do implante da válvula cardíaca transcateter (THV), uma vez que o "escape" ou leak paravalvar (PVL) após implante de valva aórtica transcateter está associada com desfecho ruim e mortalidade. A avaliação quantitativa da gravidade do PVL antes e após a PDB é mandatória para se avaliar adequadamente o PVL e, assim, melhorar os resultados e os desfechos do implante. Objetivo: Investigar uma avalição angiográfica quantitativa da regurgitação aórtica (RA) por videodensitometria (VD-RA) antes e após a PDB. Métodos: Resultados da VD-RA antes e após a PDB foram analisados em 61 casos. Resultados Houve diminuição significativa da VD-RA de 24,0(18,0-30,5)% para 12,0(5,5-19,0)% (p < 0,001; p < 0,05 bilateral foi definido como significância estatística). O delta relativo de VD-RA após a PDB variou de -100% (melhora) a +40% (piora) e o valor mediano foi -46,2%. As frequências de melhora, ausência de mudança, e piora foram 70% (n = 43), 25% (n = 15) e 5% (n = 3), respectivamente. Observou-se RA significativo (VD-RA > 17%) em 47 pacientes (77%) antes e em 19 pacientes (31%) após a PDB. Conclusões: A VD-RA após o implante de THV possibilita a avaliação quantitativa da regurgitação pós-TAVI, e pode auxiliar na tomada de decisão quanto à realização ou não da PDB, bem como na avaliação de sua eficácia.


Subject(s)
Humans , Male , Female , Aged, 80 and over , Aortic Valve Insufficiency/etiology , Aortic Valve Insufficiency/diagnostic imaging , Transcatheter Aortic Valve Replacement , Postoperative Complications/diagnostic imaging , Video Recording , Severity of Illness Index , Aortography , Densitometry , Transcatheter Aortic Valve Replacement/adverse effects
10.
Article in English | WPRIM | ID: wpr-117388

ABSTRACT

PURPOSE: Conventional computed tomography (CT) is the gold standard method for case planning for endovascular aortic aneurysm repair (EVAR). However, aortography with a marking catheter is needed for measuring the actual length of an aneurysm. With advances in imaging technology, a 3-dimensional (3D) workstation can obviate the need for the aortography. The objective of this study was to determine whether a 3D workstation could obviate the need for aortography for EVAR. MATERIALS AND METHODS: One vascular surgeon and 1 interventional radiologist retrospectively assessed axial CT scans and reformatted the 3D CT scans by using the iNtuition workstation (TeraRecon Inc., San Mateo, CA, USA) for 25 patients who underwent EVAR. Four measurements of diameter and length were obtained from each modality. The actual length of an aneurysm for the proper graft was decided by 2 observers by reviewing the aortography with a marking catheter. RESULTS: The measurements from the 2 modalities were reproducible with intraobserver correlation coefficients of 0.89 to 1.0 for conventional CT and 0.98 to 1.0 for 3D workstation. Interobserver correlation coefficients were 0.29 to 0.95 for conventional CT and 0.85 to 0.99 for the 3D workstation. The length of the aneurysm for proper main graft coincided in 18 and 14 patients according to the conventional CT scan and in 21 and 18 patients according to the 3D workstation, respectively. CONCLUSION: The interobserver agreement in planning EVAR was significantly better with the iNtuition 3D workstation. But aortography with a marking catheter may still be needed for selecting the proper graft.


Subject(s)
Aneurysm , Aortic Aneurysm , Aortic Aneurysm, Abdominal , Aortography , Catheters , Endovascular Procedures , Humans , Intuition , Methods , Retrospective Studies , Tomography, X-Ray Computed , Transplants
12.
VozAndes ; 27(1): 41-42, 2016.
Article in English | LILACS | ID: biblio-999542

ABSTRACT

A 65-year-old male with medical history of hyperlipidemia, type 2 diabetes mellitus, and arterial hypertension well controlled by glibenclamide, and amlodipine plus enalapril for about a decade was referred to our service because of the recent fndings in aortography (Figure 1: A, B, and C). He was not a smoker, neither a heavy alcohol drinker, and had chronic lumbar pain related to degenerative spondyloarthropathy. Previous imaging studies had showed narrowing of the disc space and reduction of the diameter of spinal canal on L4 and L5. During evaluation of control, an incidental image was observed in the right side of his pelvis, and the aortography was done. On presentation, BMI was 33 kg/m2, temperature was 36°C, blood pressure was 120x80 mmHg, with 80 bpm and 14 irpm, and there were no signifcant physical fndings on abdominal region. Laboratory fndings (normal ranges) revealed unremarkable blood counts and thyroid function; total cholesterol 289 (<200 mg/dL), HDL 54 (30-60 mg/ dL), LDL 206 (100-190 mg/dL), and tryglicerides 147 (<180 mg/dL); glucose 70 (70-99 mg/dL), uric acid 8.7 (2.5-7.0 mg/dL), urea 57 (14-50 mg/dL) with creatinine clearance 129.6 (≥129 ml/min); and PSA 0.5 (<4.0 ng/mL). After a successful open invasive procedure, he was discharged to outpatient.


Varón de 65 años con antecedentes médicos de hiperlipidemia, diabetes tipo 2. mellitus, e hipertensión arterial bien controlada por glibenclamida, y Amlodipine plus enalapril durante aproximadamente una década se refirió a nuestro servicio debido a los hallazgos recientes en aortografía (Figura 1: A, B y C). No era un fumador, ni un gran bebedor de alcohol, y tenía Dolor lumbar relacionado con espondiloartropatía degenerativa. Anterior Los estudios de imagen han mostrado estrechamiento del espacio discal y reducción. del diámetro del canal espinal en L4 y L5. Durante la evaluación del control, se observó una imagen incidental en el lado derecho de su pelvis, y la Se realizó una aortografía. En la presentación, el IMC fue de 33 kg / m2, temperatura. fue de 36 ° C, la presión arterial fue de 120x80 mmHg, con 80 bpm y 14 irpm, y no hubo hallazgos físicos significativos en la región abdominal. Los hallazgos de laboratorio (rangos normales) revelaron recuentos sanguíneos sin complicaciones y la función tiroidea; colesterol total 289 (<200 mg / dL), HDL 54 (30-60 mg / dL), LDL 206 (100-190 mg / dL) y tryglicerides 147 (<180 mg / dL); glucosa 70 (70-99 mg / dL), ácido úrico 8.7 (2.5-7.0 mg / dL), urea 57 (14-50 mg / dL) con aclaramiento de creatinina 129.6 (≥129 ml / min); y PSA 0.5 (<4.0 ng / mL). Después un procedimiento invasivo abierto exitoso, fue dado de alta como paciente ambulatorio


Subject(s)
Humans , Male , Aged , Aortography , Iliac Artery , Aneurysm , Pain , Lumbosacral Region
13.
Rev. bras. cir. cardiovasc ; 30(2): 205-210, Mar-Apr/2015. tab, graf
Article in English | LILACS | ID: lil-748940

ABSTRACT

Abstract Objective: Report initial experience with the Frozen Elephant Trunk technique. Methods: From July 2009 to October 2013, Frozen Elephant Trunk technique was performed in 21 patients (66% male, mean age 56 ±11 years). They had type A aortic dissection (acute 9.6%, chronic 57.3%), type B (14.3%, all chronic) and complex aneurysms (19%). It was 9.5% of reoperations and 38% of associated procedures (25.3% miocardial revascularization, 25.3% replacement of aortic valve and 49.4% aortic valved graft). Aortic remodeling was evaluated comparing preoperative and most recent computed tomography scans. One hundred per cent of complete follow-up, mean time of 28 months. Results: In-hospital mortality of 14.2%, being 50% in acute type A aortic dissection, 8.3% in chronic type A aortic dissection, 33.3% in chronic type B aortic dissection and 0% in complex aneurysms. Mean times of cardiopulmonary bypass (152±24min), myocardial ischemia (115±31min) and selective cerebral perfusion (60±15min). Main complications were bleeding (14.2%), spinal cord injury (9.5%), stroke (4.7%), prolonged mechanical ventilation (4.7%) and acute renal failure (4.7%). The need for second-stage operation was 19%. False-lumen thrombosis was obtained in 80%. Conclusion: Frozen Elephant Trunk is a feasible technique and should be considered. The severity of the underlying disease justifies high mortality rates. The learning curve is a reality. This approach allows treatment of more than two segments at once. Nonetheless, if a second stage is made necessary, it is facilitated. .


Resumo Objetivo: Relatar experiência inicial com a técnica "Frozen Elephant Trunk". Métodos: Entre julho de 2009 e outubro de 2013, 21 pacientes, 66% homens, média de idade de 56±11 anos, 66,7% portadores de dissecção da aorta tipo A de Stanford (9,6% agudas e 57,1% crônicas), tipo B (14,3%, todas crônicas) e aneurismas complexos (19%), foram operados pela técnica Frozen Elephant Trunk. Foram 9,5% de reoperações e 38% com procedimentos associados (25,3% revascularizações do miocárdio, 25,3% troca da valva aórtica e 49,4% tubos valvulados). Remodelamento da aorta foi avaliado com a comparação de angiotomografia pré-operatória e pós-operatória mais recente. Seguimento 100% dos pacientes, tempo médio de 28 meses. Resultados: Mortalidade hospitalar de 14,2%, sendo 50% nas dissecções do tipo A agudas, 8,3% nas tipo A crônicas, 33,3% nas tipo B crônicas e 0% nos aneurismas complexos. Tempos médios de CEC (152±24min), isquemia miocárdica (115±31min) e perfusão cerebral seletiva (60±15min). Principais complicações pós-operatórias foram sangramento (14,2%), acidente vascular encefálico (4,7%), paraplegia (9,5%), intubação>72h (4,7%) e insuficiência renal aguda (4,7%). Houve necessidade de complementação do tratamento (distal ao stent) em 19%. Houve trombose da falsa luz em 80%. Conclusão: Frozen Elephant Trunk é opção técnica a ser utilizada. A gravidade e extensão da doença justificam mortalidade mais elevada. A curva de aprendizado é uma realidade. Esta abordagem permite abordar mais de dois segmentos de aorta em um estágio, mas se necessário segundo estágio, este é facilitado. .


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Aneurysm, Dissecting/surgery , Aorta, Thoracic/surgery , Aortic Aneurysm, Thoracic/surgery , Blood Vessel Prosthesis , Blood Vessel Prosthesis Implantation/methods , Endovascular Procedures/methods , Acute Disease , Aneurysm, Dissecting/mortality , Aortic Aneurysm, Thoracic/mortality , Aortography/methods , Blood Vessel Prosthesis Implantation/mortality , Chronic Disease , Endovascular Procedures/mortality , Hospital Mortality , Intraoperative Complications , Reproducibility of Results , Retrospective Studies , Severity of Illness Index , Time Factors , Treatment Outcome
14.
Chinese Journal of Cardiology ; (12): 39-43, 2015.
Article in Chinese | WPRIM | ID: wpr-303770

ABSTRACT

<p><b>OBJECTIVE</b>To observe the feasibility and clinical efficacy of thoracic endovascular aortic repair (TEVAR) for patients with Stanford B aortic dissection using personalized two stent-grafts implantation (TSI).</p><p><b>METHODS</b>This retrospective review included 56 patients who underwent TSI during TEVAR for Stanford B aortic dissection from Jan 2012 to May 2013 in Beijing Anzhen hospital. There were 8 patients in acute phase (within 2 weeks from onset of symptoms), 11 patients in chronic phase (greater than 2 months following initial dissection) and 37 patients in subacute phase (between 2 weeks and 2 months from onset of symptoms). Infrarenal aorta was involved in 34 patients (60.7%) and suprarenal aorta involved in 22 patients (39.3%), the mean aortic lesion length was (226 ± 13)mm. Thoracic and abdominal aortic angiography was performed during operation to measure aortic diameters of proximal and distal landing zone, and the distance between them. The proximal stent-grafts were implanted in distal aorta to the origin of left subclavian artery with oversize rate of 10%-15% according to proximal landing zone according to procedural guideline. Then the distal newly customized large tapered stent-grafts were sequentially deployed according to the diameters of both the distal end of proximal stent and distal landing zone (aortic true lumen), and overlapping length of the two stent-grafts was more than 30 mm. Patients were followed-up at 3 months, 6 months, and yearly thereafter post operation.</p><p><b>RESULTS</b>TSI procedure was successful in all patients and 122 stent-grafts were implanted. The mean length of implanted stent-grafts was (197.6 ± 20.3)mm. The mean diameter taper span was (7.5 ± 1.8)mm with proximal oversize rate of (12.8 ± 3.4)% and distal oversize rate of (11.2 ± 4.1)%. The mean angle between the distal end of stent and aorta was (2.3 ± 1.3)°. The diameter of proximal and distal landing zone, and angle between the distal end of stent and aorta remained unchanged during follow up (mean: (10.0 ± 4.0) months). The total thrombosis rate of the false lumen was 98.2% (55/56), thrombosis rate of stent segment was 82.1% (46/56) . Stent-related complications were observed in 2 patients (3.6%) , including acute spinal cord ischemia due to paraplegia (n = 1) and malposition of distal stent (n = 1).</p><p><b>CONCLUSIONS</b>Encouraging short-term outcomes are obtained from current personalized two stent-grafts implantation strategy for patients with Stanford B aortic dissection. Further prospective clinical studies are warranted to evaluate the long-term efficacy of this procedure.</p>


Subject(s)
Acute Disease , Aneurysm, Dissecting , Aorta , Aortic Aneurysm , Aortic Aneurysm, Thoracic , Therapeutics , Aortography , Blood Vessel Prosthesis , Blood Vessel Prosthesis Implantation , Endovascular Procedures , Humans , Prospective Studies , Retrospective Studies , Stents , Subclavian Artery , Thrombosis , Tomography, X-Ray Computed , Treatment Outcome
15.
Chinese Journal of Surgery ; (12): 300-304, 2015.
Article in Chinese | WPRIM | ID: wpr-308552

ABSTRACT

<p><b>OBJECTIVE</b>To attempt to produce highly accurate three-dimensional (3D) printed models of aortic aneurysm models aid complicated preoperative planning in endovascular repair procedures.</p><p><b>METHODS</b>From October 2012 to May 2014, six patients with complicated aortic aneurysms (one aortic arch aneurysms, one thoracoabdominal aortic aneurysms and four juxtarenal abdominal aortic aneurysms) accepted preoperative contrast-enhanced CT angiography (CTA) scans for procedural planning, 4 male and 2 female, average age 64 years (range 52 to 73 years). All the CTA data were processed with FitMe 3D image processing software to get the modified 3D reconstruction pictures and computer language that can be identified by the 3D printer. With the fused deposition modeling technology, the highly accurate models were got to make preoperative endovascular planning.</p><p><b>RESULTS</b>All the patients' models were printed before operations. By the guidance of models, the endovascular procedure plans were drawn up. Three patients were performed extracorporeal simulating operations with the models and four patients' endovascular operations were guided by the models during the intraoperative time. The procedure technique success rate was 100%. No serious complications and patients dead during the perioperative period.</p><p><b>CONCLUSION</b>The technology of 3D printed highly accurate models of aortic aneurysm models is feasible and can help to make preoperative endovascular planning for improving the safety of complicated procedures.</p>


Subject(s)
Aged , Aortic Aneurysm , Diagnosis , Pathology , Aortic Aneurysm, Abdominal , Diagnosis , Pathology , Aortic Aneurysm, Thoracic , Diagnosis , Pathology , Aortography , Blood Vessel Prosthesis Implantation , Methods , Endovascular Procedures , Methods , Female , Humans , Image Processing, Computer-Assisted , Imaging, Three-Dimensional , Male , Middle Aged , Preoperative Period , Software , Tomography, X-Ray Computed
16.
Article in English | WPRIM | ID: wpr-39966

ABSTRACT

Carbon dioxide (CO2) is a colorless, odorless gas which occurs naturally in the atmosphere and human body. With the advent of digital subtraction angiography, the gas has been used as a safe and useful alternative contrast agent in both arteriography and venography. Because of its lack of renal toxicity and allergic potential, CO2 is a preferred contrast agent in patients with renal failure or contrast allergy, and particularly in patients who require large volumes of contrast medium for complex endovascular procedures. Understanding of the unique physical properties of CO2 (high solubility, low viscosity, buoyancy, and compressibility) is essential in obtaining a successful CO2 angiogram and in guiding endovascular intervention. Unlike iodinated contrast material, CO2 displaces the blood and produces a negative contrast for digital subtraction imaging. Indications for use of CO2 as a contrast agent include: aortography and runoff, detection of bleeding, renal transplant arteriography, portal vein visualization with wedged hepatic venous injection, venography, arterial and venous interventions, and endovascular aneurysm repair. CO2 should not be used in the thoracic aorta, the coronary artery, and cerebral circulation. Exploitation of CO2 properties, avoidance of air contamination and facile catheterization technique are important to the safe and effective performance of CO2 angiography and CO2-guided endovascular intervention.


Subject(s)
Aneurysm , Angiography , Angiography, Digital Subtraction , Aorta, Thoracic , Aortography , Atmosphere , Carbon Dioxide , Carbon , Catheterization , Catheters , Coronary Vessels , Endovascular Procedures , Hemorrhage , Human Body , Humans , Hypersensitivity , Phlebography , Portal Vein , Renal Insufficiency , Solubility , Viscosity
18.
Chinese Journal of Surgery ; (12): 876-880, 2015.
Article in Chinese | WPRIM | ID: wpr-349242

ABSTRACT

Endovascular repair has gradually become the mainstream treatment of aortic dilatation disease. However, endovascular therapy requires sufficient landing zone both in the proximal and distal region of aortic lesion. A large proportion of aortic dilatation lesion was excluded from traditional endovascular therapy due to the visceral artery involvement or being too close to the orifice of viceral artery. Recently, with the adoption of chimney technique, sandwich technique and hybrid technique and the advent of fenestrated and branched stent graft expand the application of endovascular repair technology, rendering these specific type of aortic disease gradually got the chance to endovascular surgery. Different technology has its own characteristics and scope. The surgeons should make their own judgment and selection based on the specific characteristics of lesions, their experience and accessibility to special equipment and other related factors.


Subject(s)
Aorta , Pathology , Aortic Diseases , General Surgery , Aortography , Arteries , General Surgery , Blood Vessel Prosthesis , Blood Vessel Prosthesis Implantation , Endovascular Procedures , Humans , Stents , Tomography, X-Ray Computed , Treatment Outcome
19.
Chinese Journal of Surgery ; (12): 970-972, 2015.
Article in Chinese | WPRIM | ID: wpr-349231

ABSTRACT

With the increasing application of endovascular stent-graft in the treatment of aortic dissection, there are still some problems and controversies in the selection of the stent-graft oversizing. This review summarized the latest research in the study of the baseline and measurement in stent-graft oversizing selection, the relationship between stent-graft oversizing and prognosis and the selection of stent-graft oversizing in different patients with different conditions, providing a reference for the endovascular stent-graft oversizing selection in the treatment of aortic dissection.


Subject(s)
Aneurysm, Dissecting , Aortic Aneurysm , Aortography , Blood Vessel Prosthesis , Blood Vessel Prosthesis Implantation , Humans , Prognosis , Stents
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