Closure Of Coronary Artery Fistula Research Articles

The functional impact on donor vessel following transcatheter closure of coronary artery fistulas-a retrospective study using QFR analysis.

The impact of transcatheter closure of coronary artery fistula (CAF) and residual shunt after occlusion on improving blood flow in the donor vessel remains uncertain. To evaluate the functional impact on the donor vessel following CAFs closure using QFR (Quantitative Flow Ratio) analysis. A total of 46 patients with 48 CAFs who underwent transcatheter closure at Shanghai Chest Hospital and Shuguang Hospital between March 2015 and August 2023 were included in the review. The clinical, angiographic details, and QFR data were subjected to analysis. The size of the fistulae was defined according to the ratio between the diameters of the fistulae and the largest diameter of the coronary vessel not feeding the coronary fistula. Among 48 CAFs, the average diameter of the fistulae ostium was 3.19 ± 1.04 mm, while the mean diameter of the donor vessel segment following fistulae was 3.45 ± 1.01 mm. The mean QFR value of the donor vessels with medium CAFs was found to be significantly lower than those with small CAFs (0.93 ± 0.10 vs. 0.98 ± 0.03; p < 0.05). Furthermore, the mean QFR value of donor vessels with medium CAFs was observed to be significantly improved after occlusion (0.99 ± 0.01 vs. 0.93 ± 0.10; p = 0.01). However, there was no statistical difference in the mean QFR value of donor vessels with small CAFs before and after occlusion (0.98 ± 0.03 vs. 0.98 ± 0.02; p > 0.05). Moreover, the changes in QFR were more pronounced in donor vessels with medium CAFs compared to those with small CAFs after occlusion (0.06 ± 0.10 vs. 0.005 ± 0.012; p = 0.01). There is no statistical difference in the mean QFR variation and QFR variation rate between donor vessels with CAFs that occurred residual shunt and those without residual shunt after occlusion (p > 0.05). The presence of medium CAFs has a significant impact on the blood flow of the donor vessel, as compared to small CAFs, and may benefit from occlusion. A small residual shunt has no significant impact on the effectiveness of CAFs occlusion in enhancing donor blood flow.

Transcatheter closure of multiple coronary artery fistulas: a coronary computed tomography angiography-based anatomic classification

Introduction and objectivesThis study aimed to retrospectively analyze the anatomical characteristics and classification of multiple coronary artery fistulas (MCAFs), and to compare the outcomes of transcatheter closure between MCAFs and single fistulas. MethodsAll patients who underwent attempts at transcatheter closure of coronary artery fistulas (CAFs) at Fuwai Hospital from 2010 to 2023 were retrospectively reviewed. Patients were categorized into single fistula and MCAFs groups, and anatomical characteristics and transcatheter closure outcomes were compared between the 2 groups. ResultsThis retrospective study included 146 patients who underwent attempted transcatheter closure of CAFs, with a 14.38% failure rate. Among the 146 patients with CAFs, 32.19% were identified as having MCAFs, with types I, II, and III constituting 40.43%, 42.55%, and 17.02%, respectively. Unlike single fistulas, which predominantly originated from the right coronary artery and terminated in the left ventricle, MCAFs mainly had simultaneous origins from the right coronary artery and left anterior descending artery (29.79%), and predominantly drained into the pulmonary artery (70.21%), with a notable prevalence of plexus-like morphology (38.3% vs 2.02%, P<.001). The success rate of transcatheter closure was significantly lower for multiple fistulas compared with single fistula (64.29% vs 84.34%, P=.011). Multivariate regression analysis indicated that the risk of closure failure for MCAFs was 2.64 times that of single fistulas. ConclusionsMCAFs are common among CAFs and can be classified into 3 types based on the number and location of their origins and terminations. The risk of failure of transcatheter closure is significantly higher in MCAFs than in single fistulas.

Surgical Management of Coronary Artery Fistulas in Children.

This study investigated the surgical outcomes associated with coronary artery fistulas (CAFs) in children. We retrospectively reviewed the medical records of 23 pediatric patients who underwent surgical closure of CAFs between 1995 and 2021. At presentation, 7 patients (30.4%) exhibited symptoms. Associated cardiac anomalies were present in 8 patients. Fourteen fistulas originated from the right coronary artery and 9 from the left. The most common drainage site was the right ventricle, followed by the right atrium and the left ventricle. The median follow-up duration was 9.3 years (range, 0.1-25.6 years). The median age and body weight at repair were 3.1 years (range, 0-13.4 years) and 14.4 kg (range, 3.1-42.2 kg), respectively. Cardiopulmonary bypass was used in 17 cases (73.9%), while cardioplegic arrest was employed in 14 (60.9%). Epicardial CAF ligation was utilized in 10 patients (43.5%), the transcoronary approach in 9 (39.1%), the endocardial approach in 2 (8.7%), and other methods in 2 patients (8.7%). The application of cardioplegic arrest during repair did not significantly impact the duration of postoperative intensive care unit stay or overall hospital stay. One in-hospital death and 1 late death were recorded. The overall survival rate was 95.7% at 10 years and 83.7% at 15 years. A residual fistula was detected in 1 patient. During the follow-up period, no surviving patient experienced cardiovascular symptoms or coronary events. Surgical repair of CAF can be performed safely with or without cardioplegic arrest, and it is associated with a favorable prognosis in children.

Diagnosis and Management of Congenital Coronary Artery Fistulas in Infants and Children.

Coronary artery fistulas (CAFs) are rare coronary anomalies that most often occur as congenital malformations in children. Although most children with CAFs are asymptomatic at the time of diagnosis, some present with symptoms of congestive heart failure in the setting of large left-to-right shunts. Others may develop additional complications including coronary artery ectasia and coronary thrombosis. Surgical and transcatheter closure techniques have been previously described. This review presents the classifications of CAFs in children and the short and long-term outcomes of CAF closure in children in the reported literature. We also summarize previously-reported angiographic findings and post-treatment remodeling characteristics in pediatric patients. With advancements in cross-sectional imaging technologies, anatomic delineation of CAFs via these modalities has become crucial in procedural planning. Recent reports of surgical and transcatheter closure of CAFs in children have reported good procedural success and low rates of short-term morbidity and mortality. Distal-type CAFs have elevated risk for long-term sequelae post-closure compared to proximal-type CAFs. A recent report of a multi-institutional cohort also describes post-closure remodeling classifications which may predict long-term outcomes in these patients as well as guide individualized anticoagulation management. Invasive closure of significant CAFs via surgical or transcatheter techniques is feasible and safe in most children with good short and intermediate-term outcomes. However, close clinical and imaging follow-up is required to monitor for late complications even after successful closure. Antiplatelet and anticoagulation regimens remain important aspects of post-closure management, but the necessary intensity and duration of such therapy remains unknown.

Device Closure of Left Circumflex Coronary Artery to Coronary Sinus Fistula

A coronary artery fistula (CAF) is defined as a direct connection between a coronary artery with right heart chambers including the right atrium, right ventricle, coronary sinus, superior vena cava, or pulmonary arteries. Elective closure of coronary artery fistula by surgery or percutaneous transcatheter technique is generally accepted in the presence of symptoms. We report a case of successful percutaneous transcatheter device closure of coronary fistula, originating from the circumflex artery and draining into the coronary sinus.

Percutaneous interventions of coronary artery fistulas: a single-center experience.

Coronary artery fistula (CAF) is a congenital communication between the coronary artery and other vascular structures or cardiac chambers. Percutaneous CAF closure is an emerging alternative to surgery, but long-term outcome data are limited. To review our center's experience with percutaneous CAF closure methods. Patients who were admitted to our department and underwent percutaneous coronary artery fistula intervention between January 2002 and April 2022 due to presence of CAF-related symptoms or complications were retrospectively analyzed. Data were obtained retrospectively from the hospital electronic database. A total of 39 patient were included. Mean age was 57.3 ±12.5 years and 23 (59%) patients were male. The most common symptom was angina (69.2%) and 51.2% of the patients were under treatment with at least one anti-anginal agent at admission. The right coronary artery (n = 19) and left anterior descending artery (n = 19) were the most common sites of CAF origin, and the pulmonary artery (n = 22) was the main drainage site. Coil embolization was performed most frequently and occlusion via cyanoacrylate in 3 patients and detachable balloon angioplasty in 1 patient were preferred. Percutaneous occlusion was achieved in 34 cases, 2 of the 5 failed cases underwent surgical occlusion, and remaining patients were treated with anti-anginal drugs. Complications occurred in 6 (15.3%) patients and all of the patients recovered without sequelae. Coronary artery fistulas may present with different symptoms or complications and there are several techniques for percutaneous occlusion. Percutaneous closure of CAF is feasible and safe in anatomically suitable vessels, with good results at follow-up.

Closure of coronary artery fistula using Piccolo occluder

Closure of coronary artery fistula using Piccolo occluder

Long-term outcomes following surgical repair of coronary artery fistula in adults.

Coronary artery fistula (CAF) is a relatively rare cardiac anomaly. We investigated long-term outcomes following surgical repair of CAF in adults. We retrospectively investigated 13 consecutive patients undergoing surgical repair of CAF in our institution between 2008 and 2019 (67.3 ± 10.4 years old, 38% male). CAF types were coronary artery-pulmonary artery fistula (77%), coronary artery-coronary sinus fistula (15%), and both (8%). CAFs originated from the left coronary artery (38%), right coronary artery (8%), and bilateral coronary arteries (38%). Pulmonary and systemic flow (Qp/Qs) was measured in seven patients (54%), with a mean value of 1.52. Seven patients underwent surgery for CAFs alone, and others simultaneously underwent surgery for comorbid cardiac diseases. All procedures were conducted under cardiopulmonary bypass. Surgical procedures were direct epicardial ligation of fistula (92%), direct closure of CAF through pulmonary artery incision (38%), direct closure of CAF through coronary sinus incision (8%), or patch closure of CAF through coronary artery incision (8%). Myocardial perfusion scintigraphy showed asymptomatic myocardial ischemia in the right coronary area after surgery in one patient. There were no deaths perioperatively or during follow-up (mean: 66.6 months). There were no coronary or other CAF-related events. Several anatomical variations in CAF were observed which coexist with cardiac disease. Long-term outcomes following surgical repair were satisfactory, and the concurrent intervention of CAFs during surgery for comorbid cardiac disease is useful to prevent future complications related CAFs in adults.

Coronary Artery Fistula: To Close or Not Close, That Is the Question

Prognosis in subjects with coronary artery fistula (CAF) is highly variable. CAF may remain asymptomatic throughout the entire lifetime in some; however, in others, CAF may become hemodynamically significant and complications ensue. CAF closure, either surgically or via a transcatheter approach, eliminates the underlying anatomical anomaly but is associated with a variety of complications, including but not limited to coronary thrombosis and even full-blown myocardial infarction. In this review, we summarize the evidence that argued for versus against CAF closure and attempt to provide a balanced view of the benefits versus harm of CAF closure in patients with different types of CAF.

Midterm follow up of transcatheter closure of coronary artery fistula with Nit-Occlud\xae patent ductus arteriosus coil

BackgroundCoronary artery fistula (CAF) is a rare congenital anomaly with a challenging scenario in children. This study reports our experience in transcatheter closure of CAF with Nit-Occlude PDA coil and midterm clinical and imaging follow-up.MethodsTwelve children with congenital CAF between 2009 and 2019, mean age 2.05 ± 2.05 years (4 days to 7.2 years), mean weight 8.8 ± 4.83 (2.8–17 kg), who underwent transcatheter closure with PFM coil at the Namazi hospital, Shiraz, Iran, were reported. Echocardiography and electrocardiogram were done before and after the procedure (early, 3, and 6 months after), and Multi-slice computerized tomography or conventional coronary angiography was performed at least one year after closure.ResultsIn a median follow-up of 5.5 years (range 13 months to 8 years), retrogradely closed fistula had no residual, and the fistula tract was wholly occluded, but in most anterogradely closed fistula, had a small residual, which made the fistula tract open and need additional coil closure.ConclusionsTranscatheter closure of CAF with PFM coil is feasible and effective with low mortality and morbidity, although antegrade closure with this device may be accompanied by residual shunt and need for multiple coil insertion.

Coronary Thrombosis and Acute Myocardial Infarction in a Child Following Device Closure of Coronary Artery Fistula.

Coronary Thrombosis and Acute Myocardial Infarction in a Child Following Device Closure of Coronary Artery Fistula.

Progression of artery aneurysm after transcatheter closure of coronary artery fistula.

Progression of artery aneurysm after transcatheter closure of coronary artery fistula.

Transcatheter closure of coronary artery fistula: A 21-year experience.

To evaluate the outcomes of transcatheter coronary artery fistula (CAF) closure and to identify anatomic/procedural factors that may impact outcomes. Due to the rarity of CAF, reported experience with transcatheter closure remains limited and anatomic and procedural factors that may lead to unsuccessful closure, complications, or recanalization of CAF are unclear. All patients who underwent transcatheter CAF closure at Mayo Clinic from 1997 to 2018 were retrospectively reviewed. CAF anatomic characteristics, procedural techniques, and clinical/angiographic outcomes were assessed. A total of 45 patients underwent transcatheter closure of 56 CAFs. The most commonly used devices were embolization coils in 40 (71.4%) CAFs, vascular occluders in 10 (17.8%), or covered stent in 2 (3.6%). Acute procedural success with no or trivial residual flow occurred in 50 (89.3%) CAFs. Residual flow was small in three (5.4%) and large in three (5.4%). Eight (17.8%) patients had complications, including device migration in three, intracranial hemorrhage from anticoagulation in one, and myocardial infarction (MI) in four. MI was a result of covered stent thrombosis or stagnation of flow after closure of large distal CAF. Twenty-two patients with 27 CAFs had follow-up angiography after successful index procedure at median time of 423 (IQ 97-1348) days. Of these, 23 (85.2%) had no/trace flow and 4 had large flow from recanalization. Transcatheter CAF closure is associated with a favorable acute procedural success and complication rate in selected patients. Procedural success and risk for complication are highly dependent on CAF anatomy and closure technique.

Long-term outcomes of percutaneous closure of coronary artery fistulae in the adult: A single-center experience.

We describe our 20-year experience with percutaneous closure of CAF in adult patients, focusing on long-term outcomes. From 1995 to 2015, 25 adult patients underwent 33 transcatheter interventions to close 26 CAF at our institution. Mean age was 51.4 ± 16.8 years, and 14 (56%) were female. All the patients were symptomatic with dyspnea (21/25, 84%) being the most common complaint followed by chest pain (17/25, 68%), palpitations (9/25, 36%), and heart failure (2/25, 8%). Two patients presented with acute coronary syndrome, whereas 10/25 (40%) also had inducible ischemia on stress test. These CAFs were classified as medium (12, 46.2%), large (5, 19.2%), and giant (9, 34.6%). Immediately postprocedure complete occlusion was achieved in 21 (21/26, 81%), and residual trace leak was observed in three fistulae, whereas we could not deliver coils/device in two cases. Periprocedural complications occurred in the form of coronary dissection (n = 1), myocardial infarction (n = 2), coil embolization (n = 1), transient ST elevation (n = 1); the majority of complications were observed in the early years of our experience. Patients reported marked improvement in symptoms after the intervention. During a mean follow-up of 76 ± 69 (5-214 months) (n = 22), 15 patients were investigated by either conventional (n = 6) or CT angiography (n = 8) or both (n = 1) that demonstrated thrombotic occlusion of a proximal coronary artery where a distal fistula was treated. Another patient was noted to have thrombus proximal to a vascular plug in a distal giant fistula. Three patients were lost to follow-up. None of the investigated patients had recanalization of their fistula. We did not observe remodeling of the native coronary artery that was feeding the fistula, even after successful complete closure. Percutaneous device closure of CAF is a feasible and effective therapeutic intervention in adult patients; however, patients with distal fistulas represent a significant challenge and the outcomes of these procedures are in question. All patients should have long-term angiographic follow-up.

TCT-38 Transcatheter Closure of Coronary Artery Fistula: Clinical and Angiographic Outcomes From a 21-Year Experience at a Single Center

TCT-38 Transcatheter Closure of Coronary Artery Fistula: Clinical and Angiographic Outcomes From a 21-Year Experience at a Single Center

Combined use of coils and Onyx for transcatheter closure of coronary artery fistulae.

The aim of this study was to evaluate the safety and efficacy of combined endovascular coiling and Onyx embolisation in patients with a coronary artery fistula (CAF). Between September 2014 and September 2016, 26 patients with CAFs were enrolled in our study for attempted combined therapy using coils and Onyx. The mean age of patients was 64.0±9.5 years (range, 44-78 years). CAFs were large in 10 and medium in 16 patients. The mean number of coils used was 3.1±1.2 (range, two to six), and the average volume of Onyx was 0.4±0.1 ml (range, 0.2-0.6 ml). Immediate post-embolisation angiography demonstrated that complete occlusion was achieved in 23 patients (88.5%) and a small residual fistula was achieved in three patients (11.5%). Follow-up imaging (median, 11.5 months; range, nine to 20) revealed stable occlusion of CAF in 21 cases (80.8%), trivial recanalisation in four cases (15.4%), and large recanalisation in only one case (3.8%). Re-closure was performed in the patient with large recanalisation. During the follow-up period, no deaths, severe procedure-related complications, or new symptoms occurred. In selected patients with CAF, transcatheter embolisation in combined therapy using coils and Onyx appears to be a valid option, providing a high success rate and low rate of recanalisation.

A snare retrieval experience of coil migration in a large coronary artery fistula

A 45-year-old female patient was referred due to the abnormal myocardial perfusion scintigraphy showing ischemia in the inferior and lateral wall. Coronary arteries were normal, and a large fistula was detected from the proximal portion of the circumflex coronary artery (Cx) draining into the pulmonary artery. Percutaneous closure of the coronary artery fistula (CAF) was considered, and a 3 mm × 50 mm-Balt coil was planned to place the proximal portion of the fistulized artery. Unfortunately, during placement of the coil, it was opened early and migrated to the proximal segment of the Cx, the left anterior descending artery, and the distal part of the left main coronary artery. A snare was moved into the extra backup guiding catheter immediately. The migrated coil was retrieved with the snare successfully. Subsequently, 4 mm × 12 mm and 2 mm × 25 mm-Balt coils were placed in the mid portion of the fistulized artery until total occlusion was obtained. A CAF is described as a direct connection between one or more of the coronary arteries and a cardiac chamber or great vessel. The fistula may cause serious hemodynamic disturbances such as myocardial ischemia, high-flow heart failure, right ventricle volume overload, endocarditis, rupture, thrombosis, embolism, and arrhythmias. Percutaneous closure is the prior technique, in the absence of complex conditions such as multiple fistulas and large fistula branches and in cases where the fistula can be simply reached. There have been very rare data which contain complications about the percutaneous closure of CAFs.

GW28-e0061 Combined use of coils and Onyx for transcatheter closure of coronary artery fistulae

GW28-e0061 Combined use of coils and Onyx for transcatheter closure of coronary artery fistulae

Transcatheter closure of right coronary artery fistula to the right ventricle

Coronary artery fistula (CAF) is an uncommon anomaly that is usually congenital but can be acquired. Although most patients are asymptomatic, some may present with congestive heart failure, infective endocarditis, myocardial ischemia or rupture. In the past, surgical ligation was the only option in the management of CAF, but since 1983, transcatheter closure of CAF has been increasing as an alternative to surgery. We report a 3-year-old boy, presented in Queen Alia Heart Institute, who underwent successful transcatheter closure of a large fistula communicating the distal part of the right coronary artery to the right ventricle. Our case differs from other CAFs in that the fistula was communicating the right coronary artery itself to the right ventricle.

Successful closure of coronary artery fistula with an Amplatzer Duct Occluder II device

Successful closure of coronary artery fistula with an Amplatzer Duct Occluder II device