Percutaneous Coronary Procedures Research Articles

An audit of patient radiation doses during interventional cardiology procedures in Uttarakhand, India, and establishment of local diagnostic reference levels.

The objective of this study was to investigate patient radiation doses by a dose audit of three common interventional cardiology (IC) procedures: coronary angiography (CA), percutaneous transluminal coronary angioplasty (PTCA) and CA-PTCA procedures performed in IC centres in the Uttarakhand state of India, for the establishment of local diagnostic reference levels (DRLs) and the estimation of average effective dose (Eav) for these procedures. For each procedure, the values of kerma-area product (PKA), reference air kerma (Ka,r), fluoroscopy time (FT) and the number of cine images were recorded from 1233 CA, 458 PTCA and 736 CA-PTCA procedures performed over a 12-month period at 13 IC centres of the state. From the recorded dose data, 0.6%, 1.53% and 7.9% patients were identified to have exceeded the PKA trigger level of 500 Gy cm2 for possible skin injury for CA, PTCA and CA-PTCA procedures, respectively. The 3rd quartile of the distribution of the recorded PKA values for each type of procedure was calculated to estimate local DRL values. The estimated values of DRLs and Eav were 37, 153 and 224 Gy cm2, and 6.72, 23.97 and 34.79 mSv for CA, PTCA and CA-PTCA procedures, respectively. For about 77% of the surveyed centres, the recorded patient doses were in agreement with the international standards. The local DRLs proposed in this study may be used to achieve patient dose optimization during IC procedures and the obtained patient dose data may also be archived into national dose database for the establishment of national DRLs.

706 Radial Versus Femoral Access for Diagnostic Cerebral Angiography: A Systematic Review and Meta-analysis of Randomized Trials

INTRODUCTION: Radial artery access is the gold standard for percutaneous coronary procedures, desmonstrating benefits for patient safety and comfort, its adoption for diagnostic cerebral angiography has been limited by doctors’ concerns about achieving procedural success. METHODS: PubMed, Embase and Cochrane databases were searched through April 2023. Statistical analysis were performed using R version 4.2.3. Random-effects meta-analysis with risk ratio (RR) and 95% CI were estimated using the inverse variance and Mantel-Haenszel method for binary outcomes and DerSimonian-Laird estimator for continuous outcomes. The primary outcome was technical success, and the secondary outcomes were procedure time, radiation exposure and fluoroscopy. RESULTS: After reviewing 142 studies, were included 3 randomized trials involving 492 patients with 250 patients in radial group (50.81%) and 242 in femoral (49.19%). The total mean age of the patients was 57 years old, 249 males (50.61%) and 243 females (49.39%). There is no significant difference in technical success (RR 0.99, 95% CI 0.94 to 1.03, p = 0.555, I2 = 0%), procedure time (WMD 2.08 minutes, 95% CI -5.11 to 9.28, p = 0.570, I2 = 87%) and radiation exposure also showed no significant difference (WMD 27.87 mGy, 95% CI -21.43 to 77.17, p=0.268, I2 = 0%). Fluoroscopy time had high heterogeneity and a non-significant result (WMD 2.70 minutes, 95% CI -0.73 to 6.13, p = 0.123, I2 = 82%). The funnel plots showed roughly inverted symmetrical distributions among study points which indicated the lack of any preliminary publication bias. Leave-one-out sensitivity analysis determined that the final pooled results were unstable. CONCLUSIONS: The findings suggest that the procedures studied have similar technical success rates and radiation exposure. Studies are needed to explore the factors contributing to heterogeneity in procedure and fluoroscopy times to optimize safety and efficiency in radial or femoral access.

Uninterrupted direct-acting oral anticoagulation in patients undergoing transradial percutaneous coronary procedures: The DOAC-NOSTOP study rationale and design

Backgroundpatients with atrial fibrillation (AF) under treatment with chronic oral anticoagulation (OAC) often require coronary angiography with or without percutaneous coronary intervention (PCI). Deciding the management of OAC during this periprocedural period requires balancing the risks of hemorrhage and thrombotic complications. Guidelines recommend an uninterrupted strategy in patients receiving Vitamin-K Antagonists (VKA). However, for patients undergoing coronary angiography or PCI while on direct oral anticoagulants (DOACs), withdrawal 12–24 h prior to the procedure is still recommended. This is based on expert opinions given the lack of evidence. Therefore, whether DOAC discontinuation prior to trans-radial coronary procedures should be the strategy of choice is a matter of debate and solid evidence is needed to guide clinical decision making. MethodsThe DOAC-NOSTOP study is a prospective, single-arm, open-label study evaluating the safety of DOACs continuation in 200 patients undergoing transradial percutaneous coronary procedures. DOAC treatment will not be interrupted throughout the periprocedural period. Primary outcome will be Bleeding Academic Research Consortium (BARC) type 2, 3, or 5 events, assessed at a 30-day follow-up. ConclusionsThe DOAC-NOSTOP is the first study prospectively assessing the risk of bleeding with uninterrupted DOAC in patients undergoing trans-radial percutaneous coronary procedures.

Association between Pfizer-BioNTech mRNA vaccine and myocardial infarction: clinical and angiographic insights.

With the widespread administration of the BioNTech mRNA-based COVID-19 vaccine, there is a need to evaluate its potential effects on cardiovascular health, particularly its association with myocardial infarction (MI). This study aimed to investigate the relationship between BioNTech vaccination and MI, as well as its impact on clinical and angiographic parameters. A retrospective analysis was conducted at the Eskisehir Osmangazi University, Eskisehir City Hospital, between April 2020 and May 2023 on a cohort of 1 151 patients hospitalised with MI. The patients were stratified into a BioNTech+ (vaccinated) and a BioNTech- (unvaccinated) groups. Medical records were reviewed for demographic information, clinical data and angiographic findings. Statistical analyses were performed, including logistic regression models adjusting for potential confounders. The BioNTech- group had a higher mean number of percutaneous transluminal coronary angioplasty procedures and stents compared to the BioNTech+ group. Haematological parameters and lipid profiles showed some discrepancies between the two groups. The BioNTech- group had higher white blood cell and platelet counts, while also exhibiting a higher mean low-density lipoprotein cholesterol level. The prevalence of co-morbidities and cardiovascular risk factors differed between the groups. This study found associations between the BioNTech vaccination and clinical and angiographic parameters in patients with MI.

Coronary Stent Infections: A Case of Pericardial Abscess and Stent Displacement After Repeated PTCA Procedures Which Required an Emergency Surgery

We report the case of a 50-year-old male patient with hypertension, peripheral artery disease, history of smoking and drug abuse and a hypercoagulability state, who underwent several percutaneous transluminal coronary angioplasty procedures for ST-elevation myocardial infarction first and for stents thrombosis then, complicated with sepsis, epistenocardic pericarditis, left ventricle aneurism and coronary stent abscess which required an emergency surgical treatment.

EPH224 Temporal Trends of Percutaneous Transluminal Coronary Angioplasty Procedure and Mortality Rates in the Brazilian Public Healthcare: A Real World Data Analysis From 2014 to 2022

EPH224 Temporal Trends of Percutaneous Transluminal Coronary Angioplasty Procedure and Mortality Rates in the Brazilian Public Healthcare: A Real World Data Analysis From 2014 to 2022

Cardiac intensive care unit: where we are in 2023

Cardiac intensive care has been a constantly evolving area of research and innovation since the beginning of the 21st century. The story began in 1961 with Desmond Julian's pioneering creation of a coronary intensive care unit to improve the prognosis of patients with myocardial infarction, considered the major cause of death in the world. These units have continued to progress over time, with the introduction of new therapeutic means such as fibrinolysis, invasive hemodynamic monitoring using the Swan-Ganz catheter, and mechanical circulatory assistance, with significant advances in percutaneous interventional coronary and structural procedures. Since acute cardiovascular disease is not limited to the management of acute coronary syndromes and includes other emergencies such as severe arrhythmias, acute heart failure, cardiogenic shock, high-risk pulmonary embolism, severe conduction disorders, and post-implantation monitoring of percutaneous valves, as well as other non-cardiac emergencies, such as septic shock, severe respiratory failure, severe renal failure and the management of cardiac arrest after resuscitation, the conversion of coronary intensive care units into cardiac intensive care units represented an important priority. Today, the cardiac intensive care units (CICU) concept is widely adopted by most healthcare systems, whatever the country's level of development. The main aim of these units remains to improve the overall morbidity and mortality of acute cardiovascular diseases, but also to manage other non-cardiac disorders, such as sepsis and respiratory failure. This diversity of tasks and responsibilities has enabled us to classify these CICUs according to several levels, depending on a variety of parameters, principally the level of care delivered, the staff assigned, the equipment and technologies available, the type of research projects carried out, and the type of connections and networking developed. The European Society of Cardiology (ESC) and the American College of Cardiology (ACC) have detailed this organization in guidelines published initially in 2005 and updated in 2018, with the aim of harmonizing the structure, organization, and care offered by the various CICUs. In this state-of-the-art report, we review the history of the CICUs from the creation of the very first unit in 1968 to the discussion of their current perspectives, with the main objective of knowing what the CICUs will have become by 2023.

Abstract 13492: Optimal Fluoroscopy Views and Catheter Selection for Coronary Angiography in Porcine Models

Coronary angiography is the gold standard for the diagnosis and treatment of epicardial coronary artery disease. Further, it is an essential tool for conduction of translational cardiac research on large animal models, in the development of novel cardiac therapies. While in humans coronary angiography has an exceedingly low mortality rate; in pigs, procedural mortality has been reported as high as 15%, likely due to unsuitable variations in angiographic techniques. Porcine models are used due to the resemblance of cardiac function and anatomy to humans. However, procedural guidelines delineating proper equipment to be used for angiography in this model has yet to be systematically assessed. Aims: To evaluate clinically common catheters for their utility in the safe engagement of the coronary vessels in pigs. Establish optimal workflow and fluoroscopy views for safe coronary artery engagement and angiography. Method/Results: Percutaneous superficial femoral artery access was acquired via ultrasound guidance and subsequent cardiac catheterization was performed in sus domesticus weighing 35-50 kg. Catheters that were tested included the JL 2.5, JL3.0, JR 3.0, AR1, AL1, MPA1, Champ1, 3DRC, hockey stick and RCB (5-7 french) operated over a standard .035 J tip wire. AP views were optimum to engage both the left and right coronary vessels. Only AR1, 3DRC, and hockey stick catheters successfully engaged the RCA, while all catheters tested could successfully engage the LCA. AR1 was noted to be the best for RCA engagement and AL1 for Left system engagement. AR1 was also the most succesful in engagement of both LM and RCA in same pig. AL1 provided the most stable engagement for Left coronary system. AR1/JL were better for LAD intervensions. AL1 is best for LCX intervensions Conclusion: We present a systematic description of percutaneous coronary angiographic procedures highlighting that AL for the LCA and AR for the RCA are the best choice of catheters for fastest and safest engagement of the coronary arteries limiting both radiation time and contrast use. While variations in anatomy can mandate changes in angiographic angles and catheter techniques, AP visualization and use of AL and AR catheters provided the most consistent and effective approach for porcine angiography.

TCT-358 Impact of Anthropometric Variables on Distal Versus Conventional Radial Access for Percutaneous Coronary Procedures. Insights From the DISCO RADIAL Randomized Controlled Trial

TCT-358 Impact of Anthropometric Variables on Distal Versus Conventional Radial Access for Percutaneous Coronary Procedures. Insights From the DISCO RADIAL Randomized Controlled Trial

Contrast media volume reduction with the DyeVertTM system to prevent acute kidney injury in stable patients undergoing coronary procedures.

Contrast associated acute kidney injury (CA-AKI) can lead to an increased risk of adverse events. Contrast media (CM) volume reduction has been advocated as a pivotal strategy to prevent CA-AKI in stable patients undergoing percutaneous coronary procedures. To compare the effectiveness of CM volume reduction with the DyeVertTM system versus conventional strategy in reducing the risk of CA-AKI. We prospectively collected data from 136 patients with stable coronary artery disease at high risk of CA-AKI treated with left ventricular end diastolic pressure (LVEDP)- guided hydration and undergoing interventions with the use of the DyeVertTM (Osprey Medical Inc.) system. Patients previously enrolled in the LVEDP-guided hydration arm of the "Renal Insufficiency Following Contrast MEDIA Administration triaL III" (REMEDIAL III) were considered as controls. Propensity score was used to perform 1:1 matching to adjust for major confounders. The primary outcome was the occurrence of CA-AKI, as defined by an absolute increase of creatinine values ≥0.3 mg/dL at 48 h. Patients in the DyeVert group were treated with a significant lower CM volume (median: 47.5 vs. 84.0 mL, p < 0.001). The trend in creatinine increase was lower (p = 0.004) and the Δ of creatinine (0-48 h) showed a higher drop (-0.18 vs. -0.10 mg/dL, p = 0.036) in the DyeVert group. The risk of CA-AKI was significantly lower in DyeVert group compared to control group (5.1% vs. 16.8%; odds ratio 0.27, 95% confidence interval [0.12-0.61]). CM volume reduction with the DyeVertTM system seems to be superior to conventional strategies in reducing the occurrence of CA-AKI.

Minimally Invasive Off-Pump Anaortic Complete Arterial Coronary Artery Bypass: How to Do It?

Minimally invasive direct coronary artery bypass has empowered coronary artery bypass grafting to compete with the appeal of percutaneous coronary procedures. Successful results of off-pump coronary artery bypass surgery and without touching the aorta have facilitated the development and use of minimally invasive methods. Multivessel coronary bypass surgery performed using a minimally invasive method through a small thoracotomy in the left chest with off-pump, anaortic, and all-arterial grafts is described step by step. Technical considerations, description of operation stages, and tips and pitfalls will be examined. A 64-year-old male patient with no known comorbidities except smoking revealed 3 vessels and a side vessel disease, and the heart team decided on surgical revascularization with a low-risk procedure. Experienced surgeons may perform this operation successfully, and the development of efficient simulation systems will increase its use.

P27 DOPPLER ULTRASOUND SELECTION AND FOLLOW–UP OF THE INTERNAL MAMMARY ARTERY AS CORONARY GRAFT

Abstract The impact of coronary artery disease (CAD) on all–cause mortality and overall disabilities is well–established. Percutaneous and/or surgical coronary revascularization procedures dramatically reduced the occurrence of adverse cardiovascular events in patients suffering with atherosclerosis. Specifically, guidelines from the European Society of Cardiology on the management of myocardial revascularization promoted coronary artery by–pass graft (CABG) intervention in patients with specific alterations in coronary tree due to higher beneficial effects of this procedure as compared to percutaneous one. Left internal mammary artery (LIMA) is one of the best–performing vessels in CABG procedures due to its location and its own structural characteristics. Nevertheless, non–invasive assessment of its patency is challenging. Doppler Ultrasonography (DU) might perform as a reliable technique for non–invasive evaluation of the patency of LIMA. Data from literature revealed that DU may detect severe (&amp;gt;70%) stenosis of the LIMA graft. In this case, pulsed–wave Doppler might show peak diastolic velocity/peak systolic velocity &amp;lt; 0.5 and diastolic fraction &amp;lt; 50%). Stress test might also be adopted for the evaluation of patency of LIMA through DU. The aim of this narrative review is to evaluate the impact of DU on the evaluation of the patency of LIMA graft in patients who undergo follow–up after CABG intervention. The aim of this narrative review is to evaluate the impact of DU on the evaluation of the patency of LIMA graft in patients who undergo follow–up after CABG intervention.

Successful treatment of two cases of acute myocarditis with colchicine.

Colchicine is an FDA-approved medicine that has been used for many years to prevent and treat gout flares as well as familial mediterranean fever. It is also used off-label to treat pericarditis, calcium pyrophosphate illness, and Behçet's syndrome. There are additional studies on the use of colchicine, which is accepted as the standard treatment for pericarditis in adults, post-pericardiotomy syndrome, post-operative and post-ablation atrial fibrillation, coronary artery disorders, prior to percutaneous coronary procedures, and myocarditis. Colchicine appears to be a promising oral cardiovascular treatment targeting the inflammatory axis, owing to its low cost and moderate side-effect profile. Our aim is to emphasise that colchicine treatment, which has a strong and effective anti-inflammatory effect profile, should be kept in mind in addition to conventional treatment in childhood myocarditis.

Clinical use of optical coherence tomography during percutaneous coronary intervention and coronary procedures in Southeast Asia: a survey-based expert consensus summary.

Optical coherence tomography (OCT), an established intravascular imaging technique, enables rapid acquisition of high-resolution images during invasive coronary procedures to assist physician decision-making. OCT has utility in identifying plaque/lesion morphology (e.g., thrombus, degree of calcification, and presence of lipid) and vessel geometry (lesion length and vessel diameter) and in guiding stent optimisation through identification of malapposition and underexpansion. The use of OCT guidance during percutaneous coronary interventions (PCI) has demonstrated improved procedural and clinical outcomes in longitudinal registries, although randomised controlled trial data remain pending. Despite growing data and guideline endorsement to support OCT guidance during PCI, its use in different countries is not well established. This article is based on an advisory panel meeting that included experts from Southeast Asia (SEA) and is aimed at understanding the current clinical utility of intracoronary imaging and OCT, assessing the barriers and enablers of imaging and OCT adoption, and mapping a path for the future of intravascular imaging in SEA. This is the first Southeast Asian consensus that provides insights into the use of OCT from a clinician's point of view.

Evaluation of Peripheral Vascular Function After Distal Radial Artery Access for Invasive Percutaneous Coronary Procedures

Abstract Objective: The aim of this study is to investigate the difference in impact between distal transradial access (dTRA) and classical transradial access (TRA) on vascular function using flow-mediated vasodilation (FMD) following coronary diagnostic and therapeutic catheterizations. Methods: The analysis involves a non-randomized inclusion of patients undergoing either diagnostic or elective percutaneous coronary intervention, using a dTRA access or a conventional standard TRA. Two hours after the procedure ended, the endothelium-dependent flow-mediated dilation of the brachial artery was measured by ultrasound. Results: A total number of 50 patients were included. There was no statistically significant difference between the two groups (7.20% vs 6.99%, p &lt; 0.09 for non-inferiority). Additionally, there were higher baseline values observed for BA diameters in the conventional approach group. Regarding the other secondary endpoints, there were no major access site complications, radial occlusion, in-hospital major bleeding or severe arterial spasm recorded in both groups. Conclusion: Compared to conventional TRA, accessing distal radial artery for diagnostic and therapeutic coronary interventions has the same impact on short-term vascular endothelial function and was safely performed without any major vascular complications.

Effectiveness of Oral Hydration in Preventing Contrast-Induced Nephropathy in Individuals Undergoing Elective Coronary Interventions.

Contrast-induced nephropathy (CIN) is defined as worsening renal function, represented by an increase in serum creatinine of ≥ 25% or ≥ 0.5 mg/dL up to 72 h after exposure to iodinated contrast medium (ICM). The most effective preventive measure to date is intravenous hydration (IVH). Little is known about the effectiveness of outpatient oral hydration (OH). To investigate whether outpatient OH with water is as effective as IVH with 0.9% saline solution in preventing CIN in elective coronary procedures. In this retrospective observational study, we analyzed the medical records and laboratory data of individuals undergoing percutaneous coronary procedures with ICM. Data collected between 2012 and 2015 refer to individuals who underwent IVH and those collected between 2016 and 2020 (after implementation of an OH protocol) correspond to individuals who underwent OH at home before and after coronary procedures as instructed by the nursing team. Statistical significance was established at α = 0.05. In total, 116 patients were included in this study: 58 in the IVH group and 58 in the OH group. An incidence of CIN of 15% (9/58) was observed in the group that received IVH and an incidence of 12% (7/58) was seen in the group that received OH (p = 0.68). The OH protocol, performed by the patient, appears to be as effective as the in-hospital IVH protocol for the renal protection of individuals susceptible to CIN in elective coronary interventions. These findings should be put to test in larger trials.

Type A aortic dissection during therapeutic coronary intervention in acute coronary syndrome: case report

Iatrogenic aortic dissection during coronary interventions is a rare complication and has heterogeneous management in the reviewed literature. We report a case of acute aortic syndrome of traumatic etiology, during a percutaneous coronary procedure, with its management, intra-hospital evolution, and one-year follow-up. A 65-year-old female who, during a percutaneous coronary intervention, presented an endothelium trauma of the left main artery's aorta-ostial transition by the tip of the guide catheter, leading to aortic dissection and occlusion of the left main artery with hemodynamic deterioration of the patient. The left main artery's flow was restored with drug-eluting stent implantation leading to a successful sealing of the false lumen with consequent hemodynamic stabilization. Immediate post-procedure transthoracic echocardiography showed a competent aortic valve. The patient evolved favorably and remains asymptomatic after one year.

Doppler Ultrasound Selection and Follow-Up of the Internal Mammary Artery as Coronary Graft.

The impact of coronary artery disease (CAD) on all-cause mortality and overall disabilities is well-established. Percutaneous and/or surgical coronary revascularization procedures dramatically reduced the occurrence of adverse cardiovascular events in patients suffering from atherosclerosis. Specifically, guidelines from the European Society of Cardiology on the management of myocardial revascularization promoted coronary artery by-pass graft (CABG) intervention in patients with specific alterations in the coronary tree due to the higher beneficial effects of this procedure as compared to the percutaneous one. The left internal mammary artery (LIMA) is one of the best-performing vessels in CABG procedures due to its location and its own structural characteristics. Nevertheless, the non-invasive assessment of its patency is challenging. Doppler ultrasonography (DU) might perform as a reliable technique for the non-invasive evaluation of the patency of LIMA. Data from the literature revealed that DU may detect severe (&gt;70%) stenosis of the LIMA graft. In this case, pulsed-wave Doppler might show peak diastolic velocity/peak systolic velocity &lt; 0.5 and diastolic fraction &lt; 50%. A stress test might also be adopted for the evaluation of patency of LIMA through DU. The aim of this narrative review is to evaluate the impact of DU on the evaluation of the patency of LIMA graft in patients who undergo follow-up after CABG intervention.

Forewarned Is Forearmed: Machine Learning Algorithms for the Prediction of Catheter-Induced Coronary and Aortic Injuries

Catheter-induced dissections (CID) of coronary arteries and/or the aorta are among the most dangerous complications of percutaneous coronary procedures, yet the data on their risk factors are anecdotal. Logistic regression and five more advanced machine learning techniques were applied to determine the most significant predictors of dissection. Model performance comparison and feature importance ranking were evaluated. We identified 124 cases of CID in electronic databases containing 84,223 records of diagnostic and interventional coronary procedures from the years 2000-2022. Based on the f1-score, Extreme Gradient Boosting (XGBoost) was found to have the optimal balance between positive predictive value (precision) and sensitivity (recall). As by the XGBoost, the strongest predictors were the use of a guiding catheter (angioplasty), small/stenotic ostium, radial access, hypertension, acute myocardial infarction, prior angioplasty, female gender, chronic renal failure, atypical coronary origin, and chronic obstructive pulmonary disease. Risk prediction can be bolstered with machine learning algorithms and provide valuable clinical decision support. Based on the proposed model, a profile of 'a perfect dissection candidate' can be defined. In patients with 'a clustering' of dissection predictors, a less aggressive catheter and/or modification of the access site should be considered.

Minimally invasive off-pump anaortic coronary artery bypass (MACAB).

Minimally invasive direct coronary artery bypasshas enabled coronary artery bypass graftto compete with the appeal of less invasive percutaneous coronary procedures. Favorable results of coronary artery bypass surgery performed without the use of cardiopulmonary bypass and without touching the aorta (anOPCAB) have enabled the development and use of minimally invasive methods. Between 2016 and 2021, 112 patients underwent multivessel coronary bypass surgery performed using a minimally invasive method through a small thoracotomy in the left chest with off-pump, anaortic, and all-arterial grafts (Minimally Invasive Off-Pump Anaortic Coronary Artery Bypass [MACAB]). Patient data were collected and retrospectively analyzed. Eight series from the literature using the multivessel mini-OPCAB and MACAB technique were also evaluated. Collectively, from the literature, 2729 patients underwent an average of 2.4 bypasses with an early mortality rate of 0.7% and a stroke rate of 0.16%. In our MACAB case series, 112 patients underwent an average of 2.9 bypasses with a mortality rate of 1.8% and a stroke rate of 0%. MACAB can be performed safely by experienced surgeons and reduces neurological injury and surgical trauma and may be a good alternative for multivessel stenting. Simulation systems are essential for its dissemination, and teams dedicated to coronary surgery-with subspecialty expertise-are necessary to achieve good outcomes.