Postprocedural Angiography Research Articles

Minimally Invasive vs Conventional Coronary Bypass Surgery for Multivessel Coronary Disease

BackgroundDespite sternum sparing and without cardiopulmonary bypass, the actual value of minimally invasive coronary surgery (MICS) is still debatable. This study aimed to compare the completeness of revascularization and intermediate-term outcomes of MICS with conventional sternotomy coronary artery bypass grafting (CABG). MethodsTwo groups of 244 patients each receiving MICS-CABG and sternotomy-CABG between November 2015 and March 2019 were matched by propensity score matching. The completeness of revascularization and major adverse cardiovascular and cerebrovascular events (MACCE; a composite of death, myocardial infarction, stroke, or repeated target vessel revascularization) were compared between the groups. ResultsIn the MICS-CABG group, the percentages of bypassed vessels 2, 3, and ≥4 were 53.7%, 36.1%, and 10.2%, respectively. Completeness of revascularization (95.5% vs 96.3%; P = .65) was comparable between MICS-CABG and sternotomy-CABG groups. Postprocedural angiography revealed an overall patency of 96.2% (578/601) for the MICS-CABG group. At 5 years, rates of MACCE (19.9% vs 22.1%; hazard ratio [HR], 0.80; 95% CI, 0.49-1.32; P = .39), death (10.6% vs 12.9%; HR, 0.87; 95% CI, 0.46-1.65; P = .67), myocardial infarction (5.6% vs 4.2%; HR, 0.82; 95% CI, 0.27-2.52; P = .73), stroke (6.7% vs 6.6%; HR, 1.11; 95% CI, 0.43-2.86; P = .83), and repeated target vessel revascularization (1.9% vs 1.8%; HR, 0.85; 95% CI, 0.17-3.15; P = .84) were similar between MICS-CABG and sternotomy-CABG. ConclusionsMICS-CABG, which appeared to yield noninferior completeness of revascularization and intermediate-term MACCE compared with sternotomy-CABG, could be an alternative for patients with multivessel coronary diseases.

Results of endovascular interventions for peripheral arterial diseases on the targeted arterial segments.

Endovascular interventions (EVIs) are an effective and minimally invasive therapeutic option for peripheral arterial diseases (PADs). This study aimed to evaluate the results of EVIs for PADs on the targeted arterial segments (TASs). One hundred and sixteen (116) participants with PADs were included in this cohort study. The diagnosis of PAD in this study was based on the ankle-brachial index (ABI) and Rutherford classification, confirmed by Duplex ultrasound and computed tomography angiography (CTA). The targeted arterial segments (TASs) were treated using either balloon angioplasty or endovascular stenting. At the end of each EVI, a post-procedure angiography was performed to evaluate the EVIs' results (i.e., balloon angioplasty and endovascular stenting) for PADs on the TASs. The results of EVIs were classified as either satisfactory or unsatisfactory. Satisfactory if the TASs were recanalized or had <30% stenosis after the EVIs. Unsatisfactory if the TASs were still occluded or had >30% stenosis after the EVIs. The mean participants' age was 54.42±7.74 years; 35.3% of them were diabetic, 36.2% were hypertensive, and 28.5% had multiple medical disorders. Based on Rutherford classification, 44.83% of the participants had grade I, category 2 chronic ischemia, 23.28% had grade I, category 3 chronic ischemia, 12.93% had grade II, category 4 chronic ischemia, and 18.96% had grade III, category 5 chronic ischemia. About 87.1% of the participants' PADs were managed using balloon angioplasty. The affected arteries were the superficial femoral arteries in 47.5%, popliteal arteries in 18.8%, posterior tibial arteries in 18.8%, and anterior tibial arteries in 14.9%. About 12.9% of the participants' PADs were managed using endovascular stenting and the affected arteries were the common iliac arteries in 60%, and external iliac arteries in 40%. The results of EVIs were satisfactory in 98.28% of the participants, while it was unsatisfactory in 1.72% of them. Endovascular interventions in this study were an effective and minimally invasive therapeutic option for PADs, with satisfactory results in 98.28%. Further studies, including the long-term and clinical outcomes after EVIs for PADs, are required.

Braids and beyond: a comprehensive study on pipeline device braid stability from PREMIER data

BackgroundThe pipeline embolization device (PED) has been increasingly used to treat brain aneurysms; however, concerns have been raised about braid stability with newer drawn filled tubing technology devices.ObjectiveTo evaluate braid...

Comparative evaluation of local and downstream responses in two commercially available paclitaxel-coated balloons in healthy peripheral arteries of a swine model

ObjectiveTo investigate the local, downstream, and systemic effects of 2 different paclitaxel-coated balloons. DesignPreclinical study in healthy peripheral arteries of a swine model, with randomized allocation of the distribution of the devices: the test paclitaxel-coated balloon (PCB) (LuminorⓇ), a control PCB (IN.PACTⓇ), and a plain angioplasty balloon (OceanusⓇ), considering single (1×) and overlapping (3×) doses with simple blind histologic analysis. MethodsTwenty animals underwent balloon angioplasty at 1× or 3× doses in the external and internal branches of both femoral arteries and were followed-up for 28 days. Postprocedural and follow-up angiography were carried out. Comprehensive necropsy and histology were used to evaluate the local, downstream and systemic effects. ResultsAngioplasty was successfully carried out in all animals. Significant protocol deviations appeared in 3 arteries (treated with Oceanus®) without clinical relevance. Those samples were excluded from the analysis. All the animals survived the follow-up period without major clinical issues. Local signs of drug toxicity were less marked with Luminor® than IN.PACT® at 1× dose, including endothelial loss (P = .0828), intima/media inflammation (P = .0004), transmural medial smooth muscle cell (SMC) loss (P = .0016), wall thickness loss (P = .0141), presence of fibrin in the vascular wall (P = .0054), and adventitial inflammation (P = .0080). A similar pattern was observed at the 3× dose for endothelial loss (P = .0011), intima/media inflammation (P < .0001), circumferential SMC loss (P = .0004), medial SMC replacement with proteoglycans (P = .0014), fibrin (P = .0034), and collagen content (P = .0205). Downstream vascular histologic changes were mild although more prevalent in the IN.PACT® 3× group (P = .006). No systemic effects of toxicity were detected in any of the samples analyzed. ConclusionLuminor® showed better healing pattern (lower inflammation, and endothelial and muscular loss) than IN.PACT® balloon. The effect was evident at single and triple doses. The prevalence of downstream lesions, albeit low, was higher with the triple dose of IN.PACT® compared with Luminor®.

Endovascular Embolization of Intracranial Aneurysms Using Target Tetra Detachable Coils: Angiographic and Clinical Results from a Single Center.

Background/Objectives: Target tetra detachable coils (TTDCs) aid in achieving effective framing during the coil embolization of small intracranial aneurysms by maintaining a tetrahedral conformation within the aneurysm sac. We aimed to report the initial experience of patients treated for intracranial aneurysms using TTDCs, with a specific focus on efficacy and safety. Methods: We retrospectively reviewed the medical records of 41 patients who underwent the coil embolization of intracranial aneurysms sized ≤10 mm with TTDCs between April and May 2023. Post-procedural angiographic and clinical results were reviewed. Results: Of the 46 aneurysms (45 unruptured and 1 ruptured), 33 (71.7%) were treated with the stent-assisted technique and 13 (28.3%) using the simple coil embolization technique. Post-procedural angiography showed complete occlusion in 41 aneurysms (89.1%), neck remnants in 1 (2.2%), and residual aneurysms in 4 (8.7%). The mean packing density was 34.7% (19.3-46.8%), with TTDC coil length comprising a mean of 88.5% of the total coil length. No major device- or procedure-related complications were observed. During the follow-up, 40 aneurysms (93.0%) demonstrated complete occlusion, while neck remnants were observed in 1 (2.3%), and residual aneurysms in 2 (4.7%). No cases of recanalization were observed. Conclusions: The TTDC is a safe and effective device for the endovascular treatment of intracranial aneurysms. Follow-up studies are required to establish long-term results.

Endovascular transvenous treatment of carotid–cavernous fistula

Carotid–cavernous fistulas represent abnormal communication between the carotid circulation and the cavernous sinus. They can be classified as direct or indirect. The Barrow classification is the most widely used system that categorizes the carotid–cavernous fistulas based on their arterial supply (type A–D). The mainstay of therapy for carotid–cavernous fistulas consists of transarterial or transvenous embolization, while other treatment options such as open surgery or radiosurgery are still utilized as second-line or adjuvant therapeutic options. We present the case of a 72-year-old female patient with conjunctival chemosis and exophthalmos. Computed tomography angiography detected a carotid–cavernous fistula that was confirmed with catheter angiography (Barrow type C). Through right femoral vein catheterization, detachable coils were deployed in the right cavernous sinus, adjacent to the fistula shunt point. The procedure was completed with N-butyl cyanoacrylate injection (dilution 1:2). At post-procedural digital subtraction angiography, the fistula was excluded. Endovascular transvenous treatment is a valid therapeutic option for indirect carotid–cavernous fistulas.

(234) USING PERCUTANEOUS ULTRASOUND-GUIDED THROMBIN INJECTION AS A TREATMENT OF HIGH-FLOW PRIAPISM

Abstract Introduction Nonischemic priapism typically occurs secondary to penile trauma, resulting in increased blood flow into the penis without decreased outflow resulting in a clinically non-painful, partially rigid erection. Per the American Urologic Association guidelines, surgical treatment is discouraged, and following conservative management, first line treatment is arteriography with selective arterial embolization. This procedure is generally highly successful but it does carry a risk of erectile dysfunction as well as priapism recurrence. Objective Herein we present the first known case of ultrasound guided thrombin injection in an adult for nonischemic priapism treatment after persistent priapism and arterial blush following arterial embolization. Methods A 44-year-old male presented with an eight-month history of partial tumescence and erectile dysfunction after an episode of unwitnessed loss of consciousness resulting in the subsequent development of gross hematuria and dysuria. Physical examination revealed a semi-firm penis with suspected high-flow priapism. He initially presented to the emergency department, whereby a cystogram and cross sectional abdominal imaging were unrevealing. Initial outpatient cystoscopy revealed a urethral polyp which resolved on subsequent repeat testing. Following this an outpatient penile duplex doppler ultrasound was performed demonstrating a right pseudoaneurysm at the penile base measuring 13 mm in diameter with an arteriovenous fistulous communication to the corpus cavernosum. MRI demonstrates fibrotic changes within the right corpus cavernosum and tunica albuginea indicating prior traumatic penile injury. At the time the patient had approximately 25% tumescence at rest and was only able to obtain a slightly firmer erection, but was still able to achieve orgasm. After extensive conversation and given a trial of conservative management, the patient elected to proceed with angioembolization. An angiogram was completed which demonstrated a blush of contrast in the area of the bulbourethral artery. Despite successful deployment and coil embolization of the pseudoaneurysm, there was noted continued filling of the patent pseudoaneurysm from small branched collateral vessels. The patient tolerated the procedure well, and had reduction of his baseline penile tumescence and some erectile function recovery, requiring oral phosphodiesterase-5 inhibitors. There was concern for complete occlusion of the dorsal penile artery with repeat embolization, which may ultimately worsen erectile dysfunction. He remained incompletely satisfied with response to oral therapy. Results It was ultimately decided to pursue an ultrasound guided thrombin injection, which has been reported in a handful of cases as a primary intervention for priapism. During the procedure, 200 units of thrombin was injected into the pseudoaneurysm under ultrasound guidance resulting in immediate cessation of arterial flow. Post-procedure angiography demonstrated effective resolution. Conclusions High-flow priapism is a relatively uncommon condition, managed generally with embolization as first line treatment, with success rates reported at 89 to 100% and recurrence only occurring in 30% of patients. Recurrence is generally treated with repeat embolization which has been reported to cause erectile dysfunction in 15 to 22% of cases. Percutaneous ultrasound-guided thrombin injection has the potential to be an excellent second-line treatment option for pseudoaneurysm closure in correcting nonischemic priapism, albeit with limited data, but suspected high efficacy and potentially diminished rates of erectile dysfunction. Disclosure No.

Angiography-based Fractional Flow Reserve for the Prediction of Clinical Outcomes After Drug-coated Balloon or Plain Old Balloon Angioplasty.

AccuFFRangio is a novel method for fast computation of fractional flow reserve (FFR) based on coronary angiography and computational fluid dynamics. The association between the AccuFFRangio and clinical outcomes after drug-coated balloon (DCB) or plain old balloon angioplasty (POBA) remains to be investigated. This study included consecutive patients who underwent balloon angioplasty from December 2016 to October 2020. AccuFFRangio was calculated retrospectively based on the post-procedural angiography obtained immediately after angioplasty. The primary endpoint was major adverse cardiac events (MACE), defined as a composite of all-cause death, vessel-related myocardial infarction, and repeat target vessel revascularization. A total of 169 patients were retrospectively analyzed in this study. Post-procedural AccuFFRangio (hazard ratio [HR] per 0.1 increase 0.33, 95% confidence interval [CI] 0.22-0.48, p < 0.001) was an independent predictor for MACE at 2-year follow-up. Post-procedural AccuFFRangio ≤ 0.87 was determined as the optimal cutoff value to predict MACE with an area under the curve (AUC) of 0.872 (95% CI 0.813-0.919, p < 0.001). AccuFFRangio measured immediately after balloon angioplasty is a promising predictor of unfavorable clinical outcomes.

Loss and recovery of percutaneous femoral access during transcatheter aortic valve replacement. A case report

Loss and recovery of percutaneous femoral access during transcatheter aortic valve replacement. A case report

Transarterial Embolization of Renal Arteriovenous Malformations: Treatment Outcomes According to Angiographic Classification

PurposeTo assess the different adjunctive catheter techniques required to achieve complete occlusion of renal arteriovenous malformations (rAVMs) of different angioarchitectural types. Materials and MethodsOverall, data on 18 patients with rAVM (Type 1, n = 7; Type 2, n = 2; Type 3, n = 9; mean age, 53.8 years) who underwent 25 procedures between 2011 and 2022 were reviewed. The clinical presentations, endovascular techniques, arteriovenous malformation (AVM) occlusion rate, adverse events (including the incidence of renal infarction), and clinical symptoms and outcomes (including recurrence/increase of AVM) were analyzed according to the Cho-Do angioarchitectural classification. Posttreatment renal infarction was classified as no infarction, small infarction (<12.5%), medium infarction (12.5%–25%), and large infarction (>25%) using contrast-enhanced computed tomography or magnetic resonance imaging. ResultsHematuria and heart failure were presenting symptoms in 10 and 2 patients, respectively. The embolic materials used were as follows: Type 1 rAVM, coils alone or with n-butyl-2-cyanoacrylate (nBCA); Type 2 rAVM, nBCA alone or with coils; and Type 3 rAVMs, nBCA alone. Fourteen patients underwent adjunctive catheter techniques, including flow control with a balloon catheter and multiple microcatheter placement, alone or in combination. Immediate postprocedural angiography revealed complete occlusion in 15 patients (83%) and marked regression of rAVM in 3 (17%). Small asymptomatic renal infarctions were observed in 6 patients with Type 3 rAVMs without any decrease in renal function. No major adverse events were observed. All symptomatic patients experienced symptom resolution. Recurrence/increase of rAVM was not observed during the mean 32-month follow-up period (range, 2–120 months). ConclusionsTransarterial embolization using adjunctive catheter techniques according to angioarchitectural types can be an effective treatment for rAVMs.

Risk factor analysis of changes in blood flow in the A1 segment of the anterior cerebral artery after flow-diverter coverage of it.

Few studies have explored the effect of a flow-diverter device (FD) on blood flow in the A1 segment of the anterior cerebral artery (ACA), after treatment of intracranial aneurysms in the bifurcation region of the internal carotid artery (ICA). The main objective of this article is to investigate the factors that affect A1 blood flow after FD covers the A1 artery. This is a single-center, retrospective study. Data were collected retrospectively from our center, and patients whose FDs were placed for treatment from the terminal of the ICA to the M1 segment were analyzed. A total of 42 patients were included in the study. Immediate post-procedural angiography following device placement revealed decreased blood flow in the A1 of 15 (35.7%) patients and complete occlusion of the A1 segment in 11 (26.2%) patients. During an average follow-up period of 9.8months, the A1 segment was ultimately occluded in 25 patients (59.5%) and decreased blood flow in 4 patients (9.5%). When using FD to cover the A1 artery for the treatment of intracranial aneurysms, patients with preoperative opening of the anterior communicating artery (AcomA) are more prone to occlusion or decreased blood flow of the A1 artery, compared to patients without opening.

Pelvic AVM Embolization: A Tricky Affair-Multicenter Retrospective Experience.

Pelvic arteriovenous malformations (pAVMs) are congenital or acquired vascular anomalies, presenting with hematuria, menometrorrhagia, pelvic pain, and varices; they can be life-threatening in case of rupture. Surgical therapies have been proposed but endovascular embolization has been recognized as the primary modality. The aim of this article was to report a retrospective multicenter experience concerning embolization of pelvic AVMs and provide literature overview. We describe 18 patients (14 female and 4 male) diagnosed with pAVM and treated with minimally invasive methods. The pre-procedural imaging evaluation was based on transpelvic and/or transvaginal color Doppler ultrasound, contrast-enhanced computed tomography, and/or magnetic resonance. In 3 cases, the malformation was congenital and in other 15, acquired. Most common symptoms were menometrorrhagia, hematuria, pelvic pain and pressure, and heaviness in the lower abdominal region. In 10 cases (56%), only 1 procedure was required. Eight patients underwent multistage treatment. Complete occlusion of the lesion in post-procedural angiography was observed in 12 patients (67%). No major periprocedural complications were observed. In 14 cases (78%), both satisfactory embolization and significant clinical improvement was achieved in long-term follow-up. Sixteen patients (88%) were at least satisfied with the clinical outcome. One patient reported subsequent successful pregnancy 5 years after the treatment. Hemodynamics of pAVM are variable and thorough understanding of the vessel anatomy is crucial in planning and choosing proper treatment. Both transarterial and percutaneous direct puncture embolization strategies appear safe, technically feasible, and clinically effective. In this manuscript, we discuss the role of interventional radiology methods in the treatment of pelvic arteriovenous malformations along with its advantages, limitations and possible complications. In addition to this, we review the current literature and confront our findings with those made by other authors. We believe that modern endovascular methods offer safe and reliable alternative for traditional surgical therapy and should be therefore considered during multidisciplinary treatment of these patients.

Results of Transcatheter Therapy with Balloon Versus Stent for Treating Isolated Branch Pulmonary Artery Stenosis in Children and Adolescents: A Midterm Study

Background: Branch pulmonary artery stenosis presents as either an isolated disease or in association with congenital heart diseases (in 2 - 3% of cases). Balloon angioplasty (BA) and stent implantation (SI) are two percutaneous methods that are commonly used to treat this condition. We compared the outcomes of these 2 methods in children and adolescents with isolated branch pulmonary artery stenosis. Methods: Pediatric patients with severe branch pulmonary artery stenosis who were referred to our center and underwent transcatheter insertion via either BA or SI between 2010 and 2019 were studied. Patients’ demographic data, including age, gender, and body weight, were recorded. Standard procedures for BA and SI were applied. Post-procedure angiography and echocardiographic parameters were determined and compared between the 2 groups. Patients who were followed up for at least 2 years were selected for this study, and comparative evaluations were performed during the follow-up. Results: Forty patients with a median age of 2.1 years and a median weight of 10 kg were enrolled in the study, of whom 25 and 15 underwent BA and SI, respectively. The trans-stenotic pulmonary artery pressure gradient significantly reduced immediately after both procedures, but there was no significant difference between the BA and SI groups in terms of pulmonary artery pressure gradient early after the procedures (P-value = 0.014). There was a significant decline in the peak right ventricular pressure after both procedures. Restenosis occurred more frequently in the BA group. In the BA group, patients under one year old and weight lower than 10 kg had a lower restenosis recurrence rate, evidenced by echocardiographic measurements, compared to those with a weight over 10 kg. Three patients (12%) in the BA group needed balloon reinsertion. Conclusions: Immediate therapeutic success was similar between BA and SI in patients with branch pulmonary artery stenosis. Re-stenosis occurred more often in the BA group; however, the chance of re-stenosis was lower among patients weighing less than 10 kg over a 2-year follow-up.

Abstract 15800: Evaluating the Correlation Between Right Ventricular Outflow Tract Dimensions and Arrhythmia Risk Following Self-Expanding Transcatheter Pulmonary Valve Replacement

Introduction: The introduction of self-expanding valves has allowed for an expanded range of patients who can be treated with transcutaneous pulmonary valve replacement (TPVR). Though major complications are rare, ventricular tachycardia has been reported following self-expanding valve placement prompting investigation of potential risk factors. Hypothesis: Significant variation in valve dimensions within the right ventricular outflow tract (RVOT) throughout the cardiac cycle is postulated as a cause for increased arrhythmia risk. We hypothesized that greater dynamic variation of the valve in the RVOT correlates to higher ventricular arrythmia risk. Methods: A single center review was performed of patients who underwent TPVR with either Harmony TPV or Alterra Pre-stent with subsequent placement of 29mm Sapien valve between 2019 and 2023. Using post-procedural 3D rotational angiography, minimum (systole) and maximum (diastole) diameters (mm), perimeter (mm) and cross-sectional area (mm 2 ) of the valve frame were measured in two locations: closest to the branch pulmonary artery bifurcation and the RV cavity. Results: Twenty-eight patients were included (14 Harmony TPV, 14 Alterra). Higher frequency of ventricular arrythmia was seen in patients with congenital pulmonary stenosis ( p =0.004). Higher ventricular arrythmia rate was associated with larger diastolic diameter (34.1 vs 33.2mm, p =0.04), mean perimeter (118.3 vs 108.6mm, p =0.03) and area (1124.5 vs 926.2mm 2 , p =0.03) of the valve frame closest to the RV cavity. Conclusions: Increased movement of the valve frame close to the RV cavity may correlate with a higher ventricular arrythmia risk due to increased contact with the native RVOT throughout the cardiac cycle. Future studies should focus on more accurate, mathematical methodology to better understand whether the complex interaction between self-expanding valves and the native RVOT is a determinant for post-procedural ventricular arrythmia.

Feasibility and safety of Stanford A aortic dissection complete endovascular repair system in a porcine model

BackgroundAcute type A aortic dissection (ATAAD) is a catastrophic disease with high morbidity and mortality. Although open surgery is still the gold standard for the treatment of ATAAD, some patients, with advanced age and multiple comorbidities, can only receive medical management alone. Nowadays, thoracic aortic endovascular repair (TEVAR) provides a potential treatment option for the patient with ATAAD, but traditional stent grafts (SGs), which are not designed for the ATAAD, are inapplicable to the unique anatomy of the aortic arch. Therefore, we innovatively created the BRIDGE system (Chuangxin Medical, Shenzhen, China), a complete endovascular reconstruction system designed to treat ATAAD. This study aimed to evaluate the feasibility and safety of the novel Stanford A aortic dissection complete endovascular reconstruction system in a porcine model.MethodThe BRIDGE system consists of the type A stent system and the type C stent system. Between November 2020 and March 2021, three white swine were utilized in the study. The BRIDGE system was deployed via the transcatheter approach under angiographic guidance. The swine(n = 3) treated with our system were evaluated using angiography before sacrifice 1-month after implantation, which was followed by gross specimen evaluation and histological examination of harvested tissues.ResultThe acute procedure success rate was 100% (3/3). The immediate post-procedural angiography showed that both type A SGs and type C SGs were deployed in satisfactory locations, with patency of the supra-aortic trunk and no endoleak. The cumulative mortality of 30-day was 0% without any adverse events. No device migration or leakage was observed angiographically, before sacrifice. The gross observation confirmed a type A SG covered part of the entry of anonyma. Favorable endothelialization, no thrombogenesis, and slight inflammatory infiltration of the tissues around the device were confirmed by microscopic examinations in all pigs.ConclusionIt was feasible and secure to use Stanford A aortic dissection complete endovascular reconstruction system to implement a transcatheter endovascular repair in a porcine model. With this novel system, treating acute type A aortic dissection may be more efficient and secure in human.

Successful endovascular embolization of the common hepatic artery for pseudoaneurysm associated with pancreatic fistula after liver transplantation: a case report

BackgroundAfter orthotopic liver transplantation (OLT), complications such as hepatic artery stenosis, thrombosis, and bleeding are possible. Hepatic artery pseudoaneurysms (HAP) are prone to rupture, rupture hemorrhage, and increased mortality risk. Endovascular treatment of HAP may result in recurrence, even after successful embolization with thrombin. Formation of a HAP in the common hepatic artery (CHA) is challenging because the CHA is the only artery in the liver graft after OLT. Therefore, CHA embolization in HAP is not an initial option. We report a case of HAP at the CHA after OLT that was treated with endovascular therapy, resulting in the occlusion of the CHA with coil embolization, achieving a radical cure.Case presentationA 59-year-old man with decompensated hepatitis C virus cirrhosis underwent deceased donor whole-liver transplantation after graft failure of a living donor liver transplantation. After the second transplantation, the patient developed infectious narrow-necked HAP at the CHA associated with postoperative pancreatic fistula. Repeated transcatheter arterial embolization with thrombin and n-butyl-2-cyanoacrylate was unsuccessful, as confirmed by postprocedure angiography, which revealed recanalization and regrowth of the HAP. Eight months after the first transcatheter arterial embolization, the patient presented with a chief complaint of abdominal pain due to an enlarged HAP. Angiography of the superior mesenteric artery (SMA) revealed a collateral bypass around the bile duct from the SMA to the liver graft. Coil embolization of the HAP in the CHA completely occluded the HAP without complications. More than 2 years after coil embolization, the liver graft function test results remained within normal limits without HAP recurrence.ConclusionsHAP at the CHA after liver transplantation can be fatal if ruptured. Because the liver is a highly angiogenic organ, even if initial treatment is not successful, radical treatment to occlude the CHA with HAP is possible if sufficient collateral vessels are developed.

Myocardial Perfusion in ST-Segment Elevation Myocardial Infarction Patients After Percutaneous CoronaryIntervention:Influencing Factors and Intervention Strategies.

Aim We aim to explore the factors influencing myocardial perfusion in patients with acute ST-segment elevation myocardial infarction (STEMI) after primary percutaneous coronary intervention (PPCI)and evaluate the effects of different intervention strategies on myocardial perfusion improvement. Methods A retrospective analysis was conducted on 300 patients withSTEMIwho underwent primary percutaneous coronary intervention (PPCI) at our hospital between January 2020 and December 2022. Based on post-procedural coronary angiography results using the thrombolysis in myocardial infarction (TIMI) blood flow grade and myocardial blush grade (MBG), patients were categorized into two groups: the normal perfusion group (TIMI grade 3 or MBG 2-3, n=180) and the impaired perfusion group (TIMI grades 0-2 or MBG 0-1, n=120). The impaired perfusion group was further divided using a random number table into the thrombus aspiration-only group (control group, n=60) and the thrombus aspiration combined with nicorandil group (nicorandil group, n=60). A 1:1 propensity score matching method was employed to adjust for baseline characteristics between the groups. Clinical characteristics, hematological parameters, coronary lesion features, and percutaneous coronary intervention (PCI) technical parameters were compared between the matched groups. Additionally, a multivariate logistic regression analysis was performed to identify independent risk factors influencing myocardial perfusion. Furthermore, the post-procedural myocardial perfusion, cardiac function, and clinical prognosis were compared between the control and nicorandil groups. Results After matching, the baseline characteristics of the two groups were compared. The impaired perfusion group had older age, higher proportion of male patients, higher rates of diabetes and hypertension, longer time from symptom onset to balloon dilation, higher peak cardiac troponin I (cTnI) levels, higher proportion of left main or multivessel involvement, heavier coronary lesion burden, and lower balloon inflation pressure (P<0.05). Multivariate logistic regression analysis revealed that age of ≥65 years (odds ratio {OR}=2.34, 95% confidence interval {CI}=1.23-4.46, P<0.01), time from symptom onset to balloon dilation of ≥6 hours (OR=3.12, 95% CI=1.67-5.83, P<0.01), peak cTnI level of ≥100 ng/mL (OR=4.27, 95% CI=2.18-8.36, P<0.01), left main or multivessel involvement (OR=2.86, 95% CI=1.51-5.41, P<0.01), and balloon inflation pressure of <8 atm (OR=3.45, 95% CI=1.79-6.65, P<0.01) were independent risk factors affecting myocardial perfusion. In the intervention analysis, the nicorandil group showed superior post-procedural TIMI blood flow grade, MBG, left ventricular ejection fraction (LVEF), and New York Heart Association (NYHA) functional classification compared to the control group (P<0.05). During a six-month follow-up, the nicorandil group had a lower incidence of major adverse cardiovascular events (MACE) compared to the control group (P<0.05). Conclusion Age, time from symptom onset to balloon dilation, peak cTnI level, extent of coronary artery lesions, and balloon inflation pressure were identified as independent risk factors affecting myocardial perfusion in STEMI patients after PCI. Compared to simple thrombus aspiration, thrombus aspiration combined with nicorandil demonstrated better improvement in myocardial perfusion, cardiac function, and clinical outcomes for patients with impaired perfusion.

The Angiographic and Clinical Follow-up Outcomes of the Wide-Necked and Complex Intracranial Aneurysms Treated With LVIS EVO-Assisted Coiling.

The Low Profile Visible Intraluminal Support EVO (LVIS EVO) is a self-expandable braided stent, which was recently introduced for the treatment of intracranial aneurysms. Full visibility of the stent and a relatively high metal coverage ratio are the unique features of the LVIS EVO. To assess the safety, efficacy, and midterm durability of LVIS EVO stent-assisted coiling for the treatment of wide-necked intracranial aneurysms. The endovascular databases were reviewed to identify patients treated with LVIS EVO-assisted coiling. The technical success and immediate clinical/angiographic outcomes were assessed. Periprocedural and delayed complications were evaluated. The follow-up angiographic/clinical outcomes were investigated. The preprocedural/follow-up neurological statuses were assessed with the modified Rankin Scale. One hundred three aneurysms in 103 patients (63 females) with a mean age of 54.9 ± 11.3 years were included. The mean maximum sac diameter was 6.2 ± 2.9 mm. The procedural technical success rate was 100%. Immediate postprocedural angiography showed complete occlusion in 77.7%. The mean duration of the angiographic follow-up was 8.8 ± 3.6 months. Follow-up angiography showed complete aneurysm occlusion in 89% of the 82 patients with angiographic follow-up. Recanalization was observed in 7.3% of 82 patients. Two patients (2.4%) required retreatment. In addition, 8.7% of the patients had at least 1 complication, and 2.9% of the patients developed a permanent morbidity. All patients had mRS scores ≤2. The results of this study demonstrate that SAC with LVIS EVO is a relatively safe, efficient, and durable treatment for wide-necked and complex intracranial aneurysms.

Enterprise 2 Stent-Assisted Embolization of Paraclinoid Aneurysms: A Single Center Preliminary Study.

Enterprise stent has been widely used for assisted embolization in wide-necked aneurysms while delayed ischemia or thromboembolic complications for its incomplete stent apposition. The purpose of this study was to summarize and analyze the clinical experience of using Enterprise 2 (EP2) stent-assisted embolization in the treatment of paraclinoid aneurysms. From January 2019 to December 2020, the clinical and imaging data of 98 patients with paraclinoid aneurysms treated with EP2 stent-assisted embolization were enrolled retrospectively. Preliminary experience and follow-up outcomes of EP2 stent-assisted embolization of paraclinoid aneurysms were assessed by using the Raymond grade and modified Rankin Scale. Of the 98 aneurysms, all stents were released satisfactorily. The immediate postprocedural angiography revealed a complete occlusion of the aneurysms with 77.55% of the (76/98) patients, and the last follow-up angiograms showed complete occlusion with 83.67% of the (82/98) patients. The average aneurysm size was (4.11 ± 1.25) mm, the aneurysm diameter was (4.41 ± 1.37) mm, the vessel radius was (3.87 ± 0.32) mm, the diameter at the distal of stent was (3.23 ± 0.21) mm, and the proximal was (4.18 ± 0.23) mm. Among the 98 aneurysms, 13 cases had incomplete stent apposition, 3 cases had intraoperative knotting, and the stents were improved post adjusted; 2 cases had vasospasm and 1 case had stenosis during operation, the symptoms were improved after symptomatic treatment. The result demonstrated that stent length and inner bending radius of parent artery were the pivotal factors affecting incomplete stent apposition (P < 0.01). The EP2 stent for the treatment of paraclinoid aneurysms is safe and effective, however, the length of the stent and the inner bending radius of parent artery are important factors affecting incomplete stent apposition.

OUTCOMES FROM CATHETER-DIRECTED EMBOLECTOMY FOR INTERMEDIATE-RISK AND HIGH-RISK PULMONARY EMBOLISM

OUTCOMES FROM CATHETER-DIRECTED EMBOLECTOMY FOR INTERMEDIATE-RISK AND HIGH-RISK PULMONARY EMBOLISM