Real-time ultrasound guidance facilitates femoral arterial access and reduces vascular complications: FAUST (Femoral Arterial Access With Ultrasound Trial)

ESR Essentials: arterial vascular access and closure devices-practice recommendations by the Cardiovascular and Interventional Radiological Society of Europe

Vascular access is the initial, very important, step of endovascular procedures. Various access sites include the common femoral artery, brachial artery, radial artery, popliteal artery, and distal tibial vessels (pedal arteries). Successful arterial access requires advanced knowledge of anatomy, as well as proper training and experience. Today, vascular access should be obtained using real-time, ultrasound guidance to reduce access time, patient discomfort, and puncture-related complications including dissection, arteriovenous communication, and bleeding. Nevertheless, high-level evidence to support this recommendation in peripheral procedures is limited and level A data are mainly derived from randomized cardiac trials investigating only radial and femoral access. Vascular closure devices (VCDs) for femoral access can be broadly categorized as active closure devices, compression assist devices, and external/topical hemostasis devices. There is high-level evidence demonstrating that their use is related to less time for ambulation and increased patient satisfaction. However, available data failed to clearly demonstrate a benefit in complications compared to standard manual compression in peripheral endovascular arterial procedures, and thrombotic and infectious complications reported following VCD use remain an issue. Heterogeneity noted in the literature, caused by the vast variety of devices, access sites, sheath sizes, clinical scenarios, and procedures, poses difficulties in data analysis and future study design. As a result, an individualized VCD use is currently suggested for ≥ 5 Fr femoral artery access not only to reduce time to hemostasis and ambulation and to improve patient comfort, but also to reduce bleeding complications in cases of femoral access with increased bleeding risk, deranged coagulation, and large-bore access, though a high level of evidence to support this later recommendation is limited. KEY POINTS: US guidance is strongly recommended for femoral access and is mandatory to obtain more challenging access. The use of VCDs for femoral hemostasis is generally safe, effective, and currently supported by level I evidence. Proper training and correct VCD choice, based on the patient's individual characteristics, are imperative to optimize outcomes.

Effects of Transradial Access on In-Hospital Outcomes in Percutaneous Coronary Intervention for Coronary Artery Bypass Graft: Insights from the Japanese Nationwide Database

Because of its superior safety profile and improved outcomes, trans-radial percutaneous coronary intervention (TRI) has become the preferred access in percutaneous coronary intervention (PCI) of native coronary disease. This study investigated the impact of TRI on in-hospital outcomes after PCI for coronary artery bypass graft vessels (GV-PCI). We analyzed patients who underwent GV-PCI in 2019-2022 from the Japanese nationwide registry. Patients were categorized into the TRI and trans-femoral PCI (TFI) groups. We assessed the association between TRI and in-hospital outcomes. The primary outcome was a composite of in-hospital death and major bleeding. In this study, 2,295 patients were analyzed.. The primary outcomes occurred in 29 patients (1.3%), including 17 deaths (0.7%). Major bleeding occurred in 12 patients (0.5%), and access site bleeding in 7 patients (0.3%). The TRI group (n = 1,521) showed lower crude rates of the primary outcome (0.9% vs 1.9%, p = 0.039), major bleeding (0.3% vs 1.0%, p = 0.027), and access site bleeding (0.1% vs 0.6%, p = 0.047) compared with the TFI group (n = 774). Univariable logistic regression demonstrated a significant association of TRI with reduced primary outcome (odd ratio [OR] 0.47, 95% confidence interval [CI] 0.22 to 0.98), major bleeding (OR 0.25, 95% CI 0.07 to 0.80), and access site bleeding (OR 0.20, 95% CI 0.03 to 0.94). In the multivariable analysis, TRI was still significantly associated with a decrease in major bleeding events (OR 0.29, 95% CI 0.07 to 0.93). In conclusion, the use of TRI was associated with a reduction in bleeding events when referenced to TFI in the context of GV-PCI.

[How to avoid and manage a vascular complication during TAVI procedure]

Transcatheter aortic valve implantation (TAVI) has established as a gold standard in the treatment of elderly patients with severe aortic stenosis. Vascular access marks the first step in a TAVI procedure where the transfemoral access is preferred. Therefore, vascular complications are one of the main concerns of operators. With the increasing number of TAVIs performed, the focus is on the prevention and management of vascular complications. Illustrated by a clinical case, this article attempts to review the main vascular complications, their management and how to prevent them.

A Novel Risk Score Facilitates Femoral Artery Access in Transcatheter Aortic Valve Implantation: Passage-Puncture Score

Background

Vascular complications remain high in transfemoral transcatheter aortic valve implantation (TAVI). Careful evaluation of the femoral arteries is important to select the optimal access site.

Objectives

This study sought to describe a novel risk score (the passage-puncture score) for transfemoral access using a single suture-based closure system.

Methods

The passage-puncture score consists of the evaluation of 1) passage feasibility of the ilio-femoral arteries (passage score) and 2) puncture site feasibility (puncture score) based on pre-TAVI computed tomography. All patients underwent fluoroscopy-guided arterial puncture and closure with a suture-based closure system. The primary endpoint was the rate of vascular complications in discharge, including minor and major vascular complications according to the definitions of the Third Valve Academic Research Consortium.

Results

From September 2020 to June 2021, transfemoral TAVI was performed in 98 of 99 patients. Passage score (right) was significantly higher in patients treated by left compared to those treated by right femoral access (3 vs. 1; p <0.001). Puncture score was significantly different between patients undergoing mid-femoral as compared to nonmid-femoral puncture (0 vs. 3, p <0.001). Minor vascular complications occurred in six (6%) patients.

Conclusions

The passage-puncture score is effective in defining the optimal access site for transfemoral TAVI. The systematic evaluation has the potential to further reduce access-site complications.

Role of Mechanical Circulatory Support in Complex High-Risk and Indicated Percutaneous Coronary Intervention: Current Indications, Device Options, and Potential Complications

Improved expertise and technological advancements have enabled the safe and effective performance of complex and high-risk-indicated percutaneous coronary intervention (CHIP) in patients previously considered inoperable or high-risk. Mechanical circulatory support (MCS) devices play a crucial role in stabilizing hemodynamics during percutaneous coronary intervention (PCI) -related ischemia, thereby reducing the risk of major adverse events and achieving a more complete revascularization. However, the use of MCS devices in protected PCI is not without risks, including peri-procedural myocardial infarction (MI), bleeding, and access-related complications. Despite numerous observational studies, there is a significant lack of randomized clinical trials comparing different MCS devices in various CHIP scenarios and evaluating their long-term safety and efficacy profiles. This review aims to summarize the current evidence regarding the benefits of MCS devices during CHIPs, offer a practical guide for selecting appropriate devices based on clinical scenarios, and highlight the unanswered questions that future trials need to address.

Clinical Utility of Ultrasonographic Guidance for Arterial Catheterization in Patients with Obesity: A Randomized Controlled Trial

OBJECTIVES

To compare the success and complication rates of radial artery catheterization using ultrasound guidance versus the conventional palpation technique in obese patients by anesthesia residents with similar levels of experience in both methods, and to measure the skin-to-artery distance of radial, brachial, and dorsalis pedis arteries using ultrasound with standardized anatomic landmarks.

DESIGN

Prospective, randomized controlled trial SETTING: Single tertiary center PARTICIPANTS: Eighty adults with a body mass index (BMI) ≥30 kg/m2 INTERVENTIONS: Ultrasound guidance or conventional palpation method MEASUREMENTS AND MAIN RESULTS: The primary outcome was the first-attempt success rate of arterial catheterization. The skin-to-artery distance of the radial artery was significantly greater in the BMI groups of 40 to 49 kg/m2 and ≥50 kg/m2 compared to the BMI group of 30 to 39 kg/m2 (mean difference, 1.0 mm; 95% confidence interval [CI], 0.4-1.7; p = 0.0029) for BMI 40-49 kg/m2 vs 30-39 kg/m2 and 1.5 mm (95% CI, 0.6-2.4 mm; p = 0.0015) for ≥50 kg/m2 vs 30-39 kg/m2. Similar findings were observed for the brachial artery. BMI was inversely associated with first-attempt success rates (p = 0.0145) and positively with time to successful catheterization (p = 0.0271). The first-attempt success and vascular complication rates of catheterization did not differ significantly between the ultrasound guidance group (65.0% and 52.5%, respectively) and the conventional palpation group (70.0% [p = 0.6331] and 57.5% [p = 0.6531], respectively).

CONCLUSION

The results of this study do not support the routine use of ultrasonography during radial arterial catheterizations for obese adults when junior practitioners perform the procedure.

Ultrasound-guided versus fluoroscopy-guided large-bore femoral access in PCI of complex coronary lesions: the international, multicentre, randomised ULTRACOLOR Trial

BACKGROUND

Transfemoral access is often used when large-bore guide catheters are required for percutaneous coronary intervention (PCI) of complex coronary lesions, especially when large-bore transradial access is contraindicated. Whether the risk of access site complications for these procedures may be reduced by ultrasound-guided puncture is unclear.

AIMS

We aimed to show the superiority of ultrasound-guided femoral puncture compared to fluoroscopy-guided access in large-bore complex PCI with regard to access site-related Bleeding Academic Research Consortium 2, 3 or 5 bleeding and/or vascular complications requiring intervention during hospitalisation.

METHODS

The ULTRACOLOR Trial is an international, multicentre, randomised controlled trial investigating whether ultrasound-guided large-bore femoral access reduces clinically relevant access site complications compared to fluoroscopy-guided large-bore femoral access in PCI of complex coronary lesions.

RESULTS

A total of 544 patients undergoing complex PCI mandating large-bore (≥7 Fr) transfemoral access were randomised at 10 European centres (median age 71; 76% male). Of these patients, 68% required PCI of a chronic total occlusion. The primary endpoint was met in 18.9% of PCI with fluoroscopy-guided access and 15.7% of PCI with ultrasound-guided access (p=0.32). First-pass puncture success was 92% for ultrasound-guided access versus 85% for fluoroscopy-guided access (p=0.02). The median time in the catheterisation laboratory was 102 minutes versus 105 minutes (p=0.43), and the major adverse cardiovascular event rate at 1 month was 4.1% for fluoroscopy-guided access and 2.6% for ultrasound-guided access (p=0.32).

CONCLUSIONS

As compared to fluoroscopy-guided access, the routine use of ultrasound-guided access for large-bore transfemoral complex PCI did not significantly reduce clinically relevant bleeding or vascular access site complications. A significantly higher first-pass puncture success rate was demonstrated for ultrasound-guided access.

CLINICALTRIALS

gov identifier: NCT04837404.

Percutaneous Endovascular Reconstruction of the Common Femoral Artery and Its Bifurcation

Occlusive lesions of the common femoral artery (CFA) and its bifurcation have traditionally been treated with open surgery. Although long-term patency rates after open surgery are excellent, such repairs are associated with substantial local and general morbidity. In recent years, different treatment options have emerged within percutaneous endovascular repair. We hereby present a narrative review on endovascular treatment modalities and a treatment algorithm for endovascular revascularisation of the CFA and its bifurcation. Lesion analysis, access issues, vessel preparation tools, and types of repairs with or without the involvement of the bifurcation are described. Based on current data, an interventional approach can result in high technical success and acceptable mid-term patency rates. Further comparative evidence with open surgery and/or between the different types of endovascular repairs is required to improve the current treatment algorithm.

The PIGTAIL paradigm for a fast and safe transfemoral transcatheter aortic valve replacement

Transfemoral transcatheter aortic valve replacement is the preferred primary access route whenever possible. Despite advancements in expertise and delivery system profiles, complications associated with the primary femoral access still significantly affect procedural morbidity and outcomes. The current standard for accurate main access planning involves proper preprocedural evaluation guided by computed tomography. Several baseline clinical and anatomical features serve as predictors for the risk of vascular injury occurring during or after transcatheter aortic valve replacement. In this paper, we aimed at reviewing the most up-to-date knowledge of the topic for a safe transfemoral access approach according to a paradigm we have called "PIGTAIL."

Establishing a Critical Limb Ischemia Outpatient Center: Separating Facts from Myth

Critical Limb Ischemia or chronic limb-threatening ischemia represents the end stage of peripheral artery disease where arterial flow is compromised to the lower extremities and risk of limb loss may become imminent. Revascularization of lower extremities is one of the cornerstones of limb salvage and amputation prevention. Establishing centers of high quality CLI therapy requires creating different foundational pillars in order to be successful. This article discusses critical limb ischemia center creation from the perspective of critical limb ischemia therapists working in an outpatient setting.

Influence of left ventricular ejection fraction in patients undergoing contemporary pLVAD-supported high-risk PCI

BACKGROUND

Left ventricular (LV) systolic dysfunction worsens outcomes in patients undergoing percutaneous coronary intervention (PCI). The objective of this study, therefore, was to evaluate outcomes of pLVAD-supported high-risk PCI (HRPCI) patients according to LV ejection fraction (LVEF).

METHODS

Patients from the PROTECT III study undergoing pLVAD-supported HRPCI were stratified according to baseline LVEF: severe LV dysfunction (LVEF <30%), mild and moderate LV dysfunction (LVEF ≥30% to <50%), or preserved LV function (LVEF ≥50%). Major adverse cardiovascular and cerebrovascular events (MACCE: composite of all-cause death, myocardial infarction, stroke/transient ischemic attack, and repeat revascularization), and PCI-related complications were assessed at 90 days and mortality was assessed at 1-year.

RESULTS

From March 2017 to March 2020, 940 patients had evaluable baseline LVEF recorded in the study database. Patients with preserved LV function were older, more frequently presented with myocardial infarction, and underwent more left main PCI and atherectomy. Immediate PCI-related coronary complications were infrequent (2.7%, overall), similar between groups (P = 0.98), and not associated with LVEF. Unadjusted 90-day MACCE rates were similar among LVEF groups; however, as a continuous variable, LVEF was associated with both 90-day MACCE (adj.HR per 5% 0.89, 95% CI [0.80, 0.98], P = 0.018) and 1-year mortality (adj.HR per 5% 0.84 [0.78, 0.90], P <0.0001).

CONCLUSIONS

Patients who underwent pLVAD-supported HRPCI exhibited low incidence of PCI-related complications, regardless of baseline LVEF. However, LVEF was associated with 90-day MACCE and 1-year mortality.

The radiographic relationship of the femoral head, inguinal ligament, and common femoral artery bifurcation for optimal vascular access

Objective

Common femoral artery (CFA) access is commonly used for endovascular interventions. Access site complications contribute to significant morbidity and mortality. This study characterizes the radiographic variability in the relationship of the femoral head, the inguinal ligament, and the CFA bifurcation, to identify the zone of optimal CFA access.

Methods

Human cadaver dissection of the inguinal ligament and CFA bifurcation was performed. The inguinal ligament and CFA bifurcation were marked with radiopaque pins and plain anteroposterior radiographs were obtained. Radiographic measurements of the femoral head length, the distance of the top of the femoral head to the inguinal ligament, and to the CFA bifurcation were obtained. Results were reported as percentage of femoral head covered by the inguinal ligament or the CFA bifurcation relative to the top of the femoral head. A heatmap was derived to determine a safe access zone between the inguinal ligament and CFA bifurcation.

Results

Forty-five groin dissections (male, n = 20; female, n = 25) were performed in 26 cadavers. The mean overlap of the inguinal ligament with the femoral head was 11.2 mm (range, -19.4 to 27.4 mm). There were no age (<85 vs ≥85 years) or sex-related differences. In 82.6% of cadaveric CFA exposures, there was overlap between the inguinal ligament and femoral head (mean, 27.7%; range, -85.7% to 70.1%), with 55.6% having a >25% overlap. In 11.1%, there was an overlap between the lower one-third of the femoral head and the CFA bifurcation. Cumulatively, heatmap analysis depicted a >80% likelihood of avoiding the inguinal ligament and CFA bifurcation below the midpoint of the femoral head.

Conclusions

Significant variability exists in the relationship between the inguinal ligament, CFA bifurcation, and the femoral head, suggesting the lack of a consistently safe access zone. The safest access zone in >80% of patients lies below the radiographic midpoint of the femoral head and the inferior aspect of the femoral head.

Editor's Choice -- European Society for Vascular Surgery (ESVS) 2024 Clinical Practice Guidelines on the Management of Abdominal Aorto-Iliac Artery Aneurysms

OBJECTIVE

The European Society for Vascular Surgery (ESVS) has developed clinical practice guidelines for the care of patients with aneurysms of the abdominal aorta and iliac arteries in succession to the 2011 and 2019 versions, with the aim of assisting physicians and patients in selecting the best management strategy.

METHODS

The guideline is based on scientific evidence completed with expert opinion on the matter. By summarising and evaluating the best available evidence, recommendations for the evaluation and treatment of patients have been formulated. The recommendations are graded according to a modified European Society of Cardiology grading system, where the strength (class) of each recommendation is graded from I to III and the letters A to C mark the level of evidence.

RESULTS

A total of 160 recommendations have been issued on the following topics: Service standards, including surgical volume and training; Epidemiology, diagnosis, and screening; Management of patients with small abdominal aortic aneurysm (AAA), including surveillance, cardiovascular risk reduction, and indication for repair; Elective AAA repair, including operative risk assessment, open and endovascular repair, and early complications; Ruptured and symptomatic AAA, including peri-operative management, such as permissive hypotension and use of aortic occlusion balloon, open and endovascular repair, and early complications, such as abdominal compartment syndrome and colonic ischaemia; Long term outcome and follow up after AAA repair, including graft infection, endoleaks and follow up routines; Management of complex AAA, including open and endovascular repair; Management of iliac artery aneurysm, including indication for repair and open and endovascular repair; and Miscellaneous aortic problems, including mycotic, inflammatory, and saccular aortic aneurysm. In addition, Shared decision making is being addressed, with supporting information for patients, and Unresolved issues are discussed.

CONCLUSION

The ESVS Clinical Practice Guidelines provide the most comprehensive, up to date, and unbiased advice to clinicians and patients on the management of abdominal aorto-iliac artery aneurysms.

Strategies to Minimize Access Site-related Complications in Patients Undergoing Transfemoral Artery Procedures with Large-bore Devices

Large bore accesses refer to accesses with a diameter of 10 French or greater and are necessary for various medical devices, including those used in transcatheter aortic valve replacement, endovascular aneurysm repair stent-grafts, and percutaneous mechanical support devices. Notably, the utilization of these devices via femoral access is steadily increasing due to advancements in technology and implantation techniques, which are expanding the pool of patients suitable for percutaneous procedures. However, procedures involving large bore devices carry a high risk of bleeding and vascular complications (VCs), impacting both morbidity and long-term mortality. In this review article, we will first discuss the incidence, determinants, and prognostic impact of VCs in patients undergoing large bore access procedures. Subsequently, we will explore the strategies developed in recent years to minimize VCs, including techniques for optimizing vascular puncture through femoral cannulation, such as the use of echo-guided access cannulation and fluoroscopic guidance. Additionally, we will evaluate existing vascular closure devices designed for large bore devices. Finally, we will consider new pharmacological strategies aimed at reducing the risk of periprocedural access-related bleeding.

Ultrasound guidance for transfemoral access in coronary procedures: an individual participant-level data metaanalysis from the femoral ultrasound trialist collaboration

BACKGROUND

Randomised controlled trials of ultrasound (US)-guided transfemoral access (TFA) for coronary procedures have shown mixed results.

AIMS

We aimed to compare US-guided versus non-US-guided TFA from randomised data in an individual participant-level data (IPD) meta-analysis.

METHODS

We completed a systematic review and an IPD meta-analysis of all randomised controlled trials comparing US-guided versus non-US-guided TFA for coronary procedures. We performed a one-stage mixed-model meta-analysis using the intention-to-treat population from included trials. The primary outcome was a composite of major vascular complications or major bleeding within 30 days.

RESULTS

A total of 2,441 participants (1,208 US-guided, 1,233 non-US-guided) from 4 randomised clinical trials were included. The mean age was 65.5 years, 27.0% were female, and 34.5% underwent a percutaneous coronary intervention. The incidence of major vascular complications or major bleeding (34/1,208 [2.8%] vs 55/1,233 [4.5%]; odds ratio [OR] 0.61, 95% confidence interval [CI]: 0.39-0.94; p=0.026) was lower in the US-guided TFA group. In the prespecified subgroup of participants who received a vascular closure device, those randomised to US-guided TFA experienced a reduction in the primary outcome (2.1% vs 5.6%; OR 0.36, 95% CI: 0.19-0.69), while no benefit for US guidance was observed in the subgroup without vascular closure devices (4.1% vs 3.3%; OR 1.21, 95% CI: 0.65-2.26; interaction p=0.009).

CONCLUSIONS

In participants undergoing coronary procedures by TFA, US guidance decreased the composite outcome of major vascular complications or bleeding and may be especially helpful when using vascular closure devices.

Comparative Evaluation of Three Different Techniques of Radial Artery Cannulation: A Prospective Randomised Study

OBJECTIVE

We planned this study to compare three approaches to arterial cannulation, i.e., catheter over the needle, catheter over the guidewire, and ultrasound-guided cannulation, in terms of overall success rate, first pass success rate, time for cannulation and incidence of complications.

METHODS

After obtaining informed written consent from the patient, they were randomized into three groups, based on chits in the box technique, to undergo radial artery cannulation as follows: group N (using catheter over needle technique), group W (using catheter over guidewire technique), group U (radial artery cannulations under ultrasound guidance). We calculated a sample size of 50 patients in each group based on the primary endpoint of the overall success rate. The data was analyzed using one-way ANOVA and post hoc Tukey's test.

RESULTS

There was a non-statistically significant trend towards a higher overall success rate in groups W and U compared to group N (47 and 46, respectively, compared to 43, p-value 0.35). Similarly, no significant differences were observed concerning any of the characteristics of radial artery cannulation, except the first pass success rate, where the success rate was highest in group W (33, 70.21%), followed by group U (34, 68%) with a p-value of 0.04.

CONCLUSION

Though catheter over guidewire and ultrasound-based techniques offer advantages in terms of higher first-pass success rate, they do not significantly increase the overall success rate or reduce the total incidence of complications.

Randomized trial of an oblique versus standard fluoroscopic-guided micropuncture technique for femoral arterial access: The Micropuncture-CFA trial

BACKGROUND

The anterior-posterior fluoroscopic guidance (the AP technique) is a standard method for common femoral artery (CFA) access, but the rate of CFA access with ultrasound vs. the AP technique was not significantly different. We have shown an oblique fluoroscopic guidance (the oblique technique) with a micropuncture needle (MPN) resulted in CFA access in 100 % of patients. The outcome of the oblique vs. AP technique is unknown. We compared the utilities of the oblique vs. AP technique for CFA access with a MPN in patients undergoing coronary procedures.

METHODS

A total of 200 patients were randomized to the oblique vs. AP technique. Using the oblique technique, a MPN was advanced to the mid pubis in the 20° ipsilateral right-or left anterior oblique view with fluoroscopic guidance and the CFA was punctured. In the AP technique, a MPN was advanced to the mid femoral head in the AP view with fluoroscopic guidance and the CFA was punctured. The primary endpoint was the rate of successful access to the CFA.

RESULTS

The rates of first pass and CFA access were higher with the oblique vs. AP technique (82 % vs. 61 %, and 94 % vs. 81 %, respectively; P < 0.01). The number of needle punctures was lower with the oblique vs. AP technique (1.1 ± 0.39 vs. 1.4 ± 0.78, respectively; P < 0.01). In high CFA bifurcations, the rate of CFA access was higher with the oblique vs. AP technique (76 % vs. 52 %, respectively; P < 0.01). Vascular complications were lower with the oblique vs. AP technique (1 % vs. 7 %, respectively; P < 0.05).

CONCLUSIONS

Our data suggest that the oblique technique, compared with the AP technique, significantly increased the rates of first pass and access to the CFA, and decreased the number of punctures and vascular complication.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT03955653.

Application of Mixed Reality to Ultrasound-guided Femoral Arterial Cannulation During Real-time Practice in Cardiac Interventions

Mixed reality opens interesting possibilities as it allows physicians to interact with both, the real physical and the virtual computer-generated environment and objects, in a powerful way. A mixed reality system, based in the HoloLens 2 glasses, has been developed to assist cardiologists in a quite complex interventional procedure: the ultrasound-guided femoral arterial cannulations, during real-time practice in interventional cardiology. The system is divided into two modules, the transmitter module, responsible for sending medical images to HoloLens 2 glasses, and the receiver module, hosted in the HoloLens 2, which renders those medical images, allowing the practitioner to watch and manage them in a 3D environment. The system has been successfully used, between November 2021 and August 2022, in up to 9 interventions by 2 different practitioners, in a large public hospital in central Spain. The practitioners using the system confirmed it as easy to use, reliable, real-time, reachable, and cost-effective, allowing a reduction of operating times, a better control of typical errors associated to the interventional procedure, and opening the possibility to use the medical imagery produced in ubiquitous e-learning. These strengths and opportunities were only nuanced by the risk of potential medical complications emerging from system malfunction or operator errors when using the system (e.g., unexpected momentary lag). In summary, the proposed system can be taken as a realistic proof of concept of how mixed reality technologies can support practitioners when performing interventional and surgical procedures during real-time daily practice.

Single femoral artery access is safe and feasible during transcatheter aortic valve replacement: a propensity score matched analysis

Background

Transcatheter aortic valve replacement (TAVR) potentially may be significantly simplified by using the single artery access (SA) technique, which does not require a secondary artery access. Nevertheless, the safety and efficacy of this technique remains unclear. Our goal was to determine if single artery access TAVR (without upgrading the sheath size) is a feasible, minimally invasive procedure.

Methods

Patients with symptomatic severe aortic stenosis who underwent TAVR via the femoral artery were consecutively enrolled in this study. Eligible individuals were divided into 2 groups: the SA group and the dual artery access (DA) group. The primary end point was device success (defined by the valve academic research consortium 3, VARC 3). A 6-month follow-up and propensity score matching analyses were performed.

Results

After propensity score matching analysis, a total of 130 patients were included: 65 in the SA group and 65 in the DA group. The SA procedure achieved similar device success (95.4% vs. 87.7%; P = 0.115) compared with the DA procedure. The SA procedure shortened the operating time (102 min vs. 125 min; P = 0.001) but did not increase the x-ray time or dose. Both a 20 Fr and a 22 Fr sheath (without upgrading the sheath size) could be used for the SA procedure. There was no major vascular complication occurred in both groups. The incidence of minor main vascular and access complications in the SA group was comparable to those of the DA procedure (0.0% vs. 3.1%; P = 0.156).

Conclusions

The SA access procedure is a promising minimally invasive TAVR technique with a low incidence of vascular complications and a high incidence of device success. It is safe and possibly applicable in all TAVR procedures.

A New Method for Common Femoral Arterial Access Using a Mixed Reality-Assisted Technique on a Phantom Model

PURPOSE

The purpose of this study was to investigate the technical feasibility and usability of a mixed reality (MiR)-assisted common femoral arterial (CFA) access technique using a sonography-assisted registration method.

MATERIALS AND METHODS

A total of 60 CFA punctures were performed on a phantom model by 2 observers. Thirty punctures were performed using MiR (MiR group) and 30 punctures were performed using a conventional sonography-guided access procedure (control group). In the MiR group, a virtual object was created based on a computed tomography (CT) angiography scan of the model and registered to the physical patient in an MiR environment utilizing a software prototype that allowed registration based on a sonography scan. Positional error assessment encompassed 4 measurements using cone beam CT scans: (1) distance of the needle tip to the centerline, (2) distance of the needle entry site from the mid-level of the ostium of the profound femoral artery, (3) angle of entry of the needle in coronal, and (4) sagittal planes. Technical success rates as well as positional errors were compared between both groups. In addition, the usability of the system was assessed according to the system usability scale (SUS).

RESULTS

Technical success was 96.7% and 100% in the MiR and control groups, respectively. The median distance between the needle tip and the centerline was 3.0 (interquartile range [IQR]: 2.0-4.6) in the MiR group and 3.2 mm (IQR: 2.3-3.9) (p=0.63) in the control group. Similarly, the median distance from the needle entry site to the mid-level of the ostium of the profound femoral artery was 3.0 mm (IQR: 2.0-5.0) in the MiR group and 4.5 mm (IQR: 2.0-7.8) (p=0.18) in the control group. The median coronal angles of needle entry were 7.5° (IQR: 6-11) and 6° (IQR: 2-12) (p=0.13), and the median sagittal angles were 50° (IQR: 47-51) and 51° (IQR: 50-55) (p<0.01) in the MiR and control groups, respectively. The mean SUS score provided by both observers was 51.3.

CONCLUSION

The feasibility of an MiR-assisted CFA access technique could be demonstrated on a phantom model. Further studies are needed to investigate the technique beyond phantom model experiments and in different anatomical settings.

CLINICAL IMPACT

This study demonstrates the technical feasibility of a Mixed-Reality-assisted common femoral arterial access procedure on a phantom model. The positional accuracy was comparable to a conventional sonography-guided technique. However, there are several limitations that need to be resolved prior to potential implementation into clinical practice. Further studies are needed to investigate its performance beyond phantom model experiments and the prototypical application requires further technical refinement to increase its usability.

Vascular Complications Following Transcatheter Aortic Valve Implantation, Using MANTA (Collagen Plug-Based) versus PROSTAR (Suture-Based), from a French Single-Center Retrospective Registry

TAVI requires a large-bore arteriotomy. Closure is usually performed by the suture system. Some studies report a vascular complication rate of up to 21%. MANTA is a recently developed percutaneous closure system dedicated to large caliber vessels based on an anchoring system. Early studies report a lower rate of vascular complications with MANTA devices. This single-center retrospective study included all patients who underwent femoral TAVI at the Brest University Hospital from 20 November 2019 to 31 March 2021. The primary endpoint is the rate of vascular complications (major and minor) pre and post-TAVI procedure. In total, 264 patients were included. There were no significant differences in vascular complications (major and minor) between the two groups (13.6% in the MANTA group versus 21.2% in the PROSTAR group; p = 0.105), although there was a tendency to have fewer minor vascular complications in the Manta group (12.1% versus 20.5%; p = 0.067). Manta was associated with a lower rate of bleeding complications (3.8% versus 15.2%; p = 0.002), predominantly minor complications with fewer closure failures (4.5% versus 13.6%; p = 0.01), less use of covered stents (4.5% versus 12.9%; p = 0.016), and with no difference in the need for vascular surgery compared to the Prostar group (1.5% versus 2.3%; p = 0.652). On the other hand, Manta was associated with a higher rate of femoral stenosis (4.5% versus 0%; p = 0.013) without clinical significance (1.5% versus 0%; p = 0.156). The Manta and Prostar devices are equivalent in terms of vascular complications. The Manta, compared to the Prostar, is associated with fewer bleeding complications.

Single-plane versus real-time biplane approaches for ultrasound-guided central venous catheterization in critical care patients: a randomized controlled trial

BACKGROUND

Critical care patients often require central venous cannulation (CVC). We hypothesized that real-time biplane ultrasound-guided CVC would improve first-puncture success rate and reduce mechanical complications. The purpose of this study was to compare the success rate and safety of single-plane and real-time biplane approaches for ultrasound-guided CVC.

METHODS

From October 2022 to March 2023, 256 participants with critical illness requiring CVC were randomized to either the single-plane (n = 128) or biplane (n = 128) ultrasound-guided cannulation groups. The success rate, number of punctures, procedure duration, incidence of catheterization-related complications, and confidence score of operators were documented.

RESULTS

The central vein was successfully cannulated in all 256 participants (163 [64%] man and 93 [36%] women; mean age 69 ± 19 [range 13-104 years]), including 182 and 74 who underwent internal jugular vein cannulation (IJVC) and femoral vein cannulation (FVC), respectively. The incidence of successful puncture on the first attempt was higher in the biplane group than that in the single-plane group (91.6% vs. 74.7%; relative risk (RR), 1.226; 95% confidence interval (CI), 1.069-1.405; P = 0.002 for the IJVC and 90.9% vs. 68.3%; RR, 1.331; 95% CI, 1.053-1.684; P = 0.019 for the FVC). The biplane group was also associated with a higher first-puncture single-pass catheterization success rate (87.4% vs. 69.0% and 90.9% vs. 68.3%), fewer undesired punctures (1[1-1(1-2)] vs. 1[1-2(1-4)] and 1[1-1(1-3)] vs. 1[1-2(1-4)]), shorter cannulation time (205 s [162-283 (66-1,526)] vs. 311 s [243-401 (136-1,223)] and 228 s [193-306 (66-1,669)] vs. 340 s [246-499 (130-944)]), and fewer immediate complications (10.5% vs. 28.7% and 9.1% vs. 34.1%) for both IJVC and FVC (all P < 0.05).

CONCLUSION

Real-time biplane imaging of ultrasound-guided CVCs offers advantages over the single-plane approach for critically ill patients.

TRIAL REGISTRATION

This prospective RCT was registered at Chinese Clinical Trial Registry (ChiCTR2200064843). Registered 19 October 2022.

Ultrasonography-Guided Procedures in the Intensive Care Setting

Ultrasonography guidance can help make procedures safer and more effective, particularly in the intensive care setting. This article discusses techniques to optimize periprocedural ultrasonography and reviews common intensive care procedures for which ultrasonography can be used: vascular access procedures, paracentesis, thoracentesis, and pericardiocentesis.

Design and Rationale of the Safe Surveillance of PCI Under Mechanical Circulatory Support With the Saranas Early Bird Bleed Monitoring System (SAFE-MCS) Study

Background

High-risk percutaneous coronary intervention (PCI) with mechanical circulatory support (MCS) has been associated with varying rates of bleeding due to variable bleeding definitions, incomplete data relative to site-specific bleeding, and inclusion of variable patient populations.

Study Design and Objectives

SAFE-MCS (NCT05077657) is a multicenter, single-arm, open-label study designed to evaluate the safety of complex high-risk PCI using Impella and surveillance with the Saranas Early Bird Bleed Monitoring System (EBBMS). The study aims to enroll 184 evaluable subjects at up to 15 US centers. The primary clinical end point is the incidence of access-site related BARC type III or V bleeding. Secondary clinical end points include the incidence of each of the Saranas EBBMS level 1, 2, and 3 indicators and the incidence of all BARC type III or V bleeding. Enrollment is anticipated to complete in September 2023 with no longitudinal follow-up.

Conclusions

SAFE-MCS is the first study to exclusively assess bleeding complications in patients undergoing PCI with Impella with independent adjudication via a clinical end point committee and will gather meaningful real-world data using contemporary practice.

Vascular Access in Percutaneous Coronary Intervention of Chronic Total Occlusions: A State-of-the-Art Review

The outcomes of chronic total occlusion percutaneous coronary intervention have considerably improved during the last decade with continued emphasis on improving procedural safety. Vascular access site bleeding remains one of the most frequent complications. Several procedural strategies have been implemented to reduce the rate of vascular access site complications. This state-of-the-art review summarizes and describes the current evidence on optimal vascular access strategies for chronic total occlusion percutaneous coronary intervention.

Editor's Choice - Systematic Review and Meta-Analysis of Lower Extremity Vascular Complications after Arterial Access for Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA): An Inevitable Concern?

OBJECTIVE

Resuscitative endovascular balloon occlusion of the aorta (REBOA) is used to temporise non-compressible torso haemorrhage. Recent data have suggested that vascular access complications secondary to REBOA placement are higher than initially anticipated. This updated systematic review and meta-analysis aimed to determine the pooled incidence rate of lower extremity arterial complications after REBOA.

DATA SOURCES

PubMed, Scopus, Embase, conference abstract listings, and clinical trial registries.

REVIEW METHODS

Studies including more than five adults undergoing emergency REBOA for exsanguinating haemorrhage that reported access site complications were eligible for inclusion. A pooled meta-analysis of vascular complications was performed using the DerSimonian-Laird weights for the random effects model, presented as a Forest plot. Further meta-analyses compared the relative risk of access complications between different sheath sizes, percutaneous access techniques, and indications for REBOA. Risk of bias was assessed using the Methodological Index for Non-Randomised Studies (MINORS) tool.

RESULTS

No randomised controlled trials were identified, and the overall study quality was poor. Twenty-eight studies including 887 adults were identified. REBOA was performed for trauma in 713 cases. The pooled proportion rate of vascular access complications was 8.6% (95% confidence interval 4.97 - 12.97), with substantial heterogeneity (I2 = 67.6%). There was no significant difference in the relative risk of access complications between 7 and > 10 F sheaths (p = .54), or between ultrasound guided and landmark guided access (p = .081). However, traumatic haemorrhage was associated with a significantly higher risk of complications compared with non-traumatic haemorrhage (p = .034).

CONCLUSION

This updated meta-analysis aimed to be as comprehensive as possible considering the poor quality of source data and high risk of bias. It suggested that lower extremity vascular complications were higher than originally suspected after REBOA. While the technical aspects did not appear to impact the safety profile, a cautious association could be drawn between REBOA use for traumatic haemorrhage and a higher risk of arterial complications.

Balloon Aortic Valvuloplasty in the Transcatheter Aortic Valve Implantation Era

As the population continues to grow, and life expectancy has increased, aortic stenosis (AS) has become the most common valvular disease requiring surgical treatment. The evolution of valve replacement therapies has progressed significantly since 1960. In the last 20 years, transcatheter aortic valve implantation (TAVI) has been a game changer, and has potential to become the standard of care. Despite uncertain prognosis benefits, balloon aortic valvuloplasty (BAV) can be useful in a broad range of patients with AS, as well as being a bridging therapy to valve replacement, or as a destination therapy, besides its role in TAVI procedures. This review describes the contemporary role of BAV in AS treatment, and focuses on technical improvements that reframe BAV as an effective tool in a variety of clinical scenarios. One of these improvements is transradial BAV, either with the conventional approach of BAV or applying the bilateral technique with two balloons.

Ultrasound-Guided Femoral Vascular Access for Percutaneous Coronary and Structural Interventions

Radial access has largely substituted femoral access for coronary interventions. Nevertheless, the femoral artery remains indispensable for gaining access to structural and complex percutaneous coronary interventions such as transcatheter aortic valve implantation and chronic total occlusion interventions, respectively. Ultrasound-guided femoral puncture is a broadly available, inexpensive, and relatively easy-to-learn technique. According to the existing evidence, ultrasound guidance for gaining femoral access has improved the effectiveness and safety of the technique. In the present paper, we sought to review the current literature in order to provide the reader with up-to-date data regarding the benefits of ultrasound-guided femoral access compared with the conventional technique as well as describing the state-of-the-art technique for gaining femoral access under ultrasound guidance.

Successful Endovascular Therapy Using the Transtibial Approach in a Patient With a History of Iliofemoral and Femorofemoral Surgical Bypass

Multiple stenotic lesions may restrict the access sites for endovascular therapy in the lower extremity arteries. Because guide sheaths used for endovascular therapy have recently become easier to insert, they are directly inserted into the posterior tibial or dorsalis pedis artery to perform the transtibial approach. We herein describe an 81-year-old man who was admitted to our hospital because of claudication of the left lower extremity. He had a history of left iliofemoral and femorofemoral bypass surgery. The patient's symptom was due to a stenotic lesion extending from the left common femoral artery to the distal part of the left superficial femoral artery. In an angiographic procedure using the antegrade approach via the right radial artery, a multipurpose catheter became stuck in the middle of the left iliofemoral bypass. The antegrade ipsilateral approach was too close to the stenotic lesion for the insertion of the guide sheath. Therefore, a retrograde approach using a 5-French guide sheath inserted via the dorsalis pedis artery was successfully performed.

Ultrasound-guided femoral access in patients with vascular closure devices: a prespecified analysis of the randomised UNIVERSAL trial

BACKGROUND

Whether ultrasound (US)-guided femoral access compared to femoral access without US guidance decreases access site complications in patients receiving a vascular closure device (VCD) is unclear.

AIMS

We aimed to compare the safety of VCD in patients undergoing US-guided versus non-US-guided femoral arterial access for coronary procedures.

METHODS

We performed a prespecified subgroup analysis of the UNIVERSAL trial, a multicentre randomised controlled trial of 1:1 US-guided femoral access versus non-US-guided femoral access, stratified for planned VCD use, for coronary procedures on a background of fluoroscopic landmarking. The primary endpoint was a composite of major Bleeding Academic Research Consortium 2, 3 or 5 bleeding and vascular complications at 30 days.

RESULTS

Of 621 patients, 328 (52.8%) received a VCD (86% ANGIO-SEAL, 14% ProGlide). In patients who received a VCD, those randomised to US-guided femoral access compared to non-US-guided femoral access experienced a reduction in major bleeding or vascular complications (20/170 [11.8%] vs 37/158 [23.4%], odds ratio [OR] 0.44, 95% confidence interval [CI]: 0.23-0.82). In patients who did not receive a VCD, there was no difference between the US- and non-US-guided femoral access groups, respectively (20/141 [14.2%] vs 13/152 [8.6%], OR 1.76, 95% CI: 0.80-4.03; interaction p=0.004).

CONCLUSIONS

In patients receiving a VCD after coronary procedures, US-guided femoral access was associated with fewer bleeding and vascular complications compared to femoral access without US guidance. US guidance for femoral access may be particularly beneficial when VCD are used.

Management of temporary mechanical circulatory support devices in cath-lab and cardiac intensive care unit

Different temporary mechanical circulatory support (tMCS) devices are available and can be used to maintain end-organ perfusion while reducing cardiac work and myocardial oxygen demand. tMCS can provide support to the right ventricle, left ventricle, or both, and its use can be considered in emergency situations such as cardiogenic shock or in elective procedures such as high-risk percutaneous coronary intervention to prevent haemodynamic deterioration. Invasive and, most importantly, non-invasive haemodynamic parameters should be taken into account when choosing the type of tMCS device and its initiation and weaning timing, determining the need for a device upgrade, and screening for complications. In this context, ultrasound tools, specifically echocardiography, can provide important data. This review aims to provide a description of the different tMCS devices, the invasive and non-invasive tools and parameters to guide their management, and their advantages and drawbacks.

Ultrasound-guided arterial cannulation in the paediatric population

BACKGROUND

In arterial line cannulation in children and adolescents, traditional methods of locating the artery include palpation and Doppler auditory assistance. It is unclear whether ultrasound guidance is superior to these methods. This is an update of a review originally published in 2016.

OBJECTIVES

To evaluate the benefits and harms of ultrasound guidance compared with traditional techniques (palpation, Doppler auditory assistance) for assisting arterial line placement at all potential sites in children and adolescents.

SEARCH METHODS

We searched CENTRAL, MEDLINE, Embase, and Web of Science from inception to 30 October 2022. We also searched four trials registers for ongoing trials, and we checked the reference lists of included studies and relevant reviews for other potentially eligible trials.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) comparing ultrasound guidance versus other techniques (palpation or Doppler auditory assistance) to guide arterial line cannulation in children and adolescents (aged under 18 years). We planned to include quasi-RCTs and cluster-RCTs. For RCTs with both adult and paediatric populations, we planned to include only the paediatric population data.

DATA COLLECTION AND ANALYSIS

Two review authors independently assessed the risk of bias of included trials and extracted data. We used standard Cochrane meta-analytical procedures, and we applied the GRADE method to assess the certainty of evidence.

MAIN RESULTS

We included nine RCTs reporting 748 arterial cannulations in children and adolescents (under 18 years of age) undergoing different surgical procedures. Eight RCTs compared ultrasound with palpation, and one compared ultrasound with Doppler auditory assistance. Five studies reported the incidence of haematomas. Seven involved radial artery cannulation and two involved femoral artery cannulation. The people performing arterial cannulation were physicians with different levels of experience. The risk of bias varied across studies, with some studies lacking details of allocation concealment. It was not possible to blind practitioners in any case; this adds a performance bias that is inherent to the type of intervention studied in our review. Compared to traditional methods, ultrasound guidance probably causes a large increase in first-attempt success rates (risk ratio (RR) 2.01, 95% confidence interval (CI) 1.64 to 2.46; 8 RCTs, 708 participants; moderate-certainty evidence) and probably causes a large reduction in the risk of complications such as haematoma formation (RR 0.26, 95% CI 0.14 to 0.47; 5 RCTs, 420 participants; moderate-certainty evidence). No studies reported data about ischaemic damage. Ultrasound guidance probably improves success rates within two attempts (RR 1.78, 95% CI 1.25 to 2.51; 2 RCTs, 134 participants; moderate-certainty evidence) and overall rate of successful cannulation (RR 1.32, 95% CI 1.10 to 1.59; 6 RCTs, 374 participants; moderate-certainty evidence). In addition, ultrasound guidance probably reduces the number of attempts to successful cannulation (mean difference (MD) -0.99 attempts, 95% CI -1.15 to -0.83; 5 RCTs, 368 participants; moderate-certainty evidence) and duration of the cannulation procedure (MD -98.77 seconds, 95% CI -150.02 to -47.52, 5 RCTs, 402 participants; moderate-certainty evidence). More studies are needed to confirm whether the improvement in first-attempt success rates is more pronounced in neonates and younger children compared to older children and adolescents.

AUTHORS' CONCLUSIONS

We identified moderate-certainty evidence that ultrasound guidance for arterial cannulation compared with palpation or Doppler auditory assistance improves first-attempt success rate, second-attempt success rate and overall success rate. We also found moderate-certainty evidence that ultrasound guidance reduces the incidence of complications, the number of attempts to successful cannulation and the duration of the cannulation procedure.

CIRSE Standards of Practice on Arterial Access for Interventions

This CIRSE Standards of Practice document is aimed at healthcare professionals (including interventional radiologists) performing endovascular procedures to provide best practices for performing arterial access for interventions. It has been developed by an expert writing group under the guidance of the CIRSE Standards of Practice Committee. This paper encompasses up-to-date clinical and technical aspects in performing safe and appropriate arterial access for interventions.

Factors related to high bifurcation level of common femoral artery

BACKGROUND

Common femoral artery (CFA) puncture is performed for endovascular treatment. However, we sometimes experience branch punctures when the CFA bifurcation level is high. In this study, we examined the frequency of high CFA bifurcation level and related factors.

METHODS

The CFA bifurcation level was identified in 100 patients, who underwent cerebral angiography or endovascular treatment by femoral artery (FA) puncture, on 191 sides. The height of the CFA bifurcation level was classified into three groups: normal, high, and very high. Age, gender, left-right difference, height, weight, body mass index, and comorbidities, including hypertension, dyslipidemia, and diabetes, were examined to determine the factors associated with high CFA bifurcation level.

RESULTS

The normal, high, and very high groups were on 142, 35, and 14 sides, respectively. The high and very high groups, which were defined as high CFA bifurcation levels, accounted for 25% of all patients. Multivariate analysis revealed that the proportion of patients with high CFA bifurcation levels was higher in the elderly (p = 0.009) and those with a history of diabetes (p = 0.042).

CONCLUSIONS

Approximately one-fourth of all patients undergoing cerebral angiography or endovascular treatment by FA puncture had high CFA bifurcation levels, which had a significant association with old age and history of diabetes. For urgent treatment, FA puncture might be performed at a higher level below the inguinal ligament if patients are elderly of those with a history of diabetes.

Educational Experience of Interventional Cardiology Fellows in the United States and Canada

BACKGROUND

The COVID-19 pandemic and iodinated contrast shortage may have affected interventional cardiology (IC) fellowship training.

OBJECTIVES

The aim of this study was to investigate the educational experience of first-year IC fellows in the United States and Canada.

METHODS

A 59-question online survey was conducted among 2021-2022 first-year IC fellows in the United States and Canada.

RESULTS

Of the 360 IC fellows invited to participate, 111 (31%) responded; 95% were from the United States, and 79% were men. Participants were mostly from university programs (70%), spent 61 to 70 hours/week in the hospital, and had an annual percutaneous coronary intervention case number of <200 (5%), 200 to 249 (8%), 250 to 349 (33%), 350 to 499 (39%), 500 to 699 (12%), or ≥700 (3%). For femoral access, a micropuncture needle was used regularly by 89% and ultrasound-guided puncture by 81%, and 43% used vascular closure devices in most cases (>80%). Intravascular ultrasound was performed and interpreted very comfortably by 62% and optical coherence tomography (OCT) by 32%, and 20% did not have access to OCT. Approximately one-third felt very comfortable performing various atherectomy techniques. Covered stents, fat embolization, and coil embolization were used very comfortably by 14%, 4%, and 3%, respectively. Embolic protection devices were used very comfortably by 11% to 24% of IC fellows. Almost one-quarter of fellows (24%) were warned about their high radiation exposure. Eighty-four percent considered IC fellowship somewhat or very stressful, and 16% reported inadequate psychological support.

CONCLUSIONS

This survey highlights opportunities for improvement with regard to the use of intravascular imaging, atherectomy techniques, complication prevention and management strategies, radiation awareness and mitigation, and psychological support.

Comparison of ultrasound-guided femoral artery cannulation versus palpation technique in neonates undergoing cardiac surgery

OBJECTIVES

Palpation technique for femoral artery cannulation can be very difficult, especially in neonates. In this study, we evaluated whether ultrasound-guided cannulation of the femoral artery is superior to palpation technique in neonates undergoing cardiac surgery.

METHODS

Forty neonates undergoing cardiac surgery were prospectively randomized into two groups (Ultrasound group and Palpation group). Access time, number of attempts, number of successful cannulations on first attempt, success rate, number of cannulas used, inadvertent access, and complications were compared between the two groups. Cost analyses of the cannulation were performed in two groups.

RESULTS

In the ultrasound group, access time for femoral artery cannulation was shorter (6.4 ± 3.0 and 10.2 ± 4.4, p = 0.003) and the number of attempts (1.4 ± 0.6 and 2.3 ± 0.8, p < 0.001) was lower compared to the palpation group. The number of successful cannulations on first-attempt (15 (75%) and 5 (25%), p = 0.002) and the success rate (95% (19) and 60% (12), p = 0.008) were higher in the ultrasound group. The number of cannulas used in the ultrasound group was less than the palpation group (p = 0.001). The cost of intervention was higher in the palpation group compared to the ultrasound group (p = 0.048).

CONCLUSIONS

The ultrasound-guided cannulation of the femoral artery in neonates is superior to the palpation technique based on the increased of the number of successful first-attempt cannulation and success rate, and the reducing of the access time, number of attempts, number of cannulas used, and cost of cannulation.

Vascular management during transcatheter aortic valve replacement

Transcatheter aortic valve replacement (TAVR), as an alternative to open heart surgery, has been established as the standard therapy for patients with severe aortic valve stenosis. Vascular access management, the first step in a TAVR procedure, should be managed properly. Moreover, the transfemoral and alternatives such as the transaxillary/subclavian, transcarotid, transapical, and transcaval approaches are considered access routes during TAVR. More than 90% of cases can be treated via the transfemoral approach in the current TAVR era, whereas other approaches should be considered in patients in whom the transfemoral approach is not suitable. Vascular complications regardless of access route differences are a specific issue of TAVR caused by the use of large sheaths. With the increased number of TAVR cases, we must manage vascular complications and decrease the morbidity and mortality rates associated with TAVR procedures. Thus, this study aimed to review the vascular complications during TAVR and summarize their prognosis, prevention, and adequate management.

Complications of catheter ablation for ventricular tachycardia

With the increasing literature demonstrating benefits of catheter ablation for ventricular tachycardia (VT), the number of patients undergoing VT ablation has increased dramatically. As VT ablation is being performed more routinely, operators must be aware of potential complications of VT ablation. This review delves deeper into the practice of VT ablation with a focus on periprocedural complications.

The Role of Ultrasound in Accessing the Distal Radial Artery at the Anatomical Snuffbox for Cardiovascular Interventions

In an effort to refine transcatheter vascular interventions, radial artery access has moved more distally at the anatomical snuffbox. Here, more challenges appear as the artery is smaller, more angulated, and more difficult to palpate. Including ultrasound guidance as a mandatory step during puncture may encourage more operators to switch to this approach. In the femoral approach, ultrasound guidance is strongly recommended because of bleeding complications, whereas in the proximal (conventional) radial approach, the role of ultrasound remains optional, and in current practice, almost all cases are performed by palpation of the pulse only. However, in distal radial access, the situation is different because the artery differs in caliber and position, and imaging can help the operator for a clean puncture, especially since repeated punctures are not only painful but also any hematoma formation leads to the complete compression of the artery and failure of access. The aim of this review is to investigate the rationale of vascular ultrasound during distal radial access and to establish some techniques and anatomical landmarks for the ultrasonographic exploration of the dorsal area of the hand.

Strategies for Reducing Vascular and Bleeding Risk for Percutaneous Left Ventricular Assist Device-supported High-risk Percutaneous Coronary Intervention

In patients at high risk for haemodynamic instability during percutaneous coronary intervention (PCI), practitioners are increasingly opting for prophylactic mechanical circulatory support, such as the Impella® heart pump (Abiomed, Danvers, MA, USA). Though Impella-supported high-risk PCI (HRPCI) ensures haemodynamic stability during the PCI procedure, access-related complication rates have varied significantly in published studies. Reported variability in complication rates relates to many factors, including anticoagulation practices, access and closure strategy, post-procedure care and variations in event definitions. This article aims to outline optimal strategies to minimize vascular and bleeding complications during Impella-supported HRPCI based on previously identified clinical, procedural and postprocedural risk factors. Practices to reduce complications include femoral skills training, standardized protocols to optimize access, closure, anticoagulation management and post-procedural care, as well as the application of techniques and technological advances. Protocols integrating these strategies to mitigate access-related bleeding and vascular complications for Impella-supported procedures can markedly limit vascular access risk as a barrier to appropriate large-bore mechanical circulatory support use in HRPCI.

Standardized pre-procedural clinical workup for protected percutaneous coronary intervention

In addition to appropriate patient screening, pre-procedural preparation is essential to optimize both technical success and patient outcome for protected percutaneous coronary intervention (PCI). A critical component of optimization is the identification and preparation of a suitable femoral access site. Here, we describe several options for both imaging and image-guided access to optimize the approach.

ULTrasound-guided TRAnsfemoral puncture in COmplex Large bORe PCI: study protocol of the UltraCOLOR trial

INTRODUCTION

Although recently published evidence favours transradial access (TRA) when using large-bore guiding catheters for percutaneous coronary intervention (PCI) of complex coronary lesions, the femoral artery will still be used in a considerate proportion of patients undergoing complex PCI, especially in PCI of chronic total occlusions (CTO). Ultrasound-guided puncture of the femoral artery may reduce clinically relevant access site complications, but robust evidence is lacking up to date.

METHODS AND ANALYSIS

A total of 542 patients undergoing complex PCI, defined as PCI of CTO, complex bifurcation, heavy calcified lesion or left main, in which the 7-F or 8-F transfemoral access is required, will be randomised to ultrasound-guided puncture or fluoroscopy-guided puncture. The primary outcome is the incidence of the composite end-point of clinically relevant access site related bleeding and/or vascular complications requiring intervention. Access site complications and major adverse cardiovascular events up to 1 month will also be compared between both groups.

ETHICS AND DISSEMINATION

Ethical approval for the study was granted by the local Ethics Committee ('Medisch Ethische Toetsing Commissie Isala Zwolle') for all Dutch sites, 'Comité Medische Ethiek Ziekenhuis Oost-Limburg' for Hospital Oost-Limburg, 'Comité d'éthique CHU-Charleroi-ISPPC' for Centre Hospilatier Universitaire de Charleroi and 'Ethik Kommission de Ärztekammer Nordrhein' for Elisabeth-Krankenhaus). The trial outcomes will be published in peer-reviewed journals of the concerned literature. The ultrasound guided transfemoral access in complex large bore PCI trial has been administered in the ClinicalTrials.gov database, reference number: NCT03846752.

REGISTRATION DETAILS

ClinicalTrials.gov identifier: NCT03846752.

Design and Rationale of Routine ltrasoud Gudance for ascular Accss fo Cardiac Procedure: Randomized Tria (UNIVERSAL)

Background

A significant limitation of femoral artery access for cardiac interventions is the increased risk of vascular complications and bleeding compared to radial access. Ultrasound (US)-guided femoral access may reduce major vascular complications and bleeding. We aim to determine whether routinely using US guidance for femoral arterial access for coronary angiography or intervention will reduce Bleeding Academic Research Consortium (BARC) 2, 3, or 5 bleeding or major vascular complications.

Methods

The Ultrasound Guidance for Vascular Access for Cardiac Procedures: A Randomized Trial (UNIVERSAL) is a multicentre, prospective, open-label, randomized trial with blinded outcomes assessment. Patients undergoing coronary angiography with or without intervention via a femoral approach with fluoroscopic guidance will be randomized 1:1 to US-guided femoral access, compared to no US. The primary outcome is the composite of major bleeding based on the BARC 2, 3, or 5 criteria or major vascular complications within 30 days. The trial is designed to have 80% power and a 2-sided alpha level of 5% to detect a 50% relative risk reduction for the primary outcome based on a control event rate of 14%.

Results

We completed enrollment on April 29, 2022, with 621 randomized patients. The patients had a mean age of 71 years (25.4% female), with a high rate of comorbidities, as follows: 45% had a prior percutaneous coronary intervention; 57% had previous coronary artery bypass surgery; and 18% had peripheral vascular disease.

Conclusions

The UNIVERSAL trial will be one of the largest randomized trials of US-guided femoral access and has the potential to change guidelines and increase US uptake for coronary procedures worldwide.