12 results on '"Intracoronary stent"'
Search Results
2. Surgical retrieval of broken, inflated angioplasty balloon catheter within intracoronary stent: A real emergency.
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Waikar, Hemant, Desilva, Rajitha, Rathnayake, Wasanthi, Ponnamperuma, Chandrika, Ravikiran, Anthonpillai, and Waikar, Hemant Digambar
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SURGICAL emergencies ,CARDIOPULMONARY bypass ,CORONARY artery bypass ,TRANSLUMINAL angioplasty ,SAPHENOUS vein ,CORONARY arteries ,SURGICAL stents ,CORONARY angiography ,MYOCARDIAL revascularization ,CATHETERS - Abstract
A 54-year old, hypertensive female patient underwent percutaneous coronary angioplasty (PTCA) followed by stenting of calcified chronic totally occluded right coronary artery. The post dilation balloon catheter got stuck and snapped during manipulations in inflated position within the stent, which could not be retrieved by nonsurgical interventions. Emergency surgery was performed to retrieve the stent along with an inflated balloon, followed by vein patch closure of arteriotomy and reversed saphenous vein graft anastomosis to right coronary artery and left anterior descending artery on cardiopulmonary bypass. [ABSTRACT FROM AUTHOR]
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- 2021
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3. DIAGNOSTIC VALUE OF BIOHUMORAL MARKERS OF NECROSIS AND INFLAMMATION IN PATIENTS WITH RIGHT VENTRICULAR MYOCARDIAL INFARCTION.
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Orozović, V., Rafajlovski, S., Gligić, B., Miailović, Z., Obradović, S., Ratković, N., Denić, N., and Baškot, B.
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MYOCARDIAL infarction , *BIOMARKERS , *HEART ventricles , *HEART dilatation , *C-reactive protein - Abstract
Introduction/Aim. Patients with right ventricular myocardial infarction (RVMI) and patients with. left ventricular myocardial infarction (LVMI) of the anterior wall with ST-elevation (STEMI), due to the profundity and volume of the necrosis, tend to have a more severe and more complicated clinical outcome as well as a higher mortality level compared to patients with myocardial infarction of inferoposterior localization in the left ventricle (IPILK), without the right ventricle being overtaken. C-Reactive protein (CRP) is a sensitive and reliable indicator of acute inflammation and is in good correlation with creatin kinasis (CK) or the enzymes which indicate necrosis markers in acute myocardial infarction (AIM). Because of this, a common biohumoral answer is of greater importance and more reliable both diagnostically and prognostically; it signifies a more severe and more complicated clinical outcome, especially on the rupture of the myocardium. The main goal of this study Was to compare the maximum values of enzymes and CRP in patients with RVMI and LVMI who had first STEMI and who were in the acute phase treated with percutaneous transluminal coronary angioplasty (PTCA). Methods. During a six-year period (2000-05), in the Clinic for Urgent Internal Medicine at the Military Medical Academy, a total of 74 patients included in a prospective study were divided into two groups. The first group consisted of patients with RMI 19 (25.67%), and the second group of patients with LMI 55 (74.33%). The patients in both groups received a percutaneous coronary intervention (PCI), if they had been admitted in the first 4 hrs from the beginning of the chest pain, and if there were no contraindications. All the others received thrombolitic therapy, and a "rescue" PCI if needed, in the next 24-48 hours. The risk factors, clinical outcome, necrosis and inflammation biomarkers (enzymes and CRP), coronary status, restenosis of stent, and intrahospital mortality rate in the first month, as well as a long term prognosis over a period of one year, were analysed. Results. The average age of the patients in the group with RVMI 19 (7 m + 12 f) was 66.1 ± 11y, and in the group with LVMI 55 (45 m + 10 f) 59.6 ± 13y, with a statistical trend which indicated that the patients with RVMI were older (66.1 ± 11y vs. 59.6 ± 13y, p < 0.061) and that women dominated (63.1% vs. 18.8%, p < 0.001). No statistical differences were found between the two groups of patients concerning the length and the appearance of the chest pain before admission to the hospital and the beginning of the PCI treatment, as well as risk factors such as smoking, cholesterol or diabetes. Of the total of 74 patients with the first STEMI as a primary manifestation of a coronary disease, we performed a primary PCI on 58 (78.37%), and a "rescue" PCI on 16 (21.63%) after the thrombolitic therapy during the 24-48h after admission. We had no cases of death either during the primary or the delayed PCI, or in the next 24h following the intervention. During the hospital phase of treatment, in the group with RMI the causes of death were the rupture of the free wall of the right ventricle (1), acute pancreatitis (1), ARDS and hypostatic pneumonia (1), cerebrovascular insult (1). During the following year, one more patient died due to reinfarction of the anterior localization. In the group with LMI, during the hospital phase of treatment 5 (9.09%) patients died: reinfarction (2), rupture of the left ventricle (1), respiratory insufficiency and severe hypostatic pneumonia (1), cerebrovascular insult (1). During the following year, 4 more patients died, sudden death (2), ischemic dilatative cardiomyopathy (2). The total mortality rate over a one-year period of observation in the group with LMI was 9 (16.3%), and in the group with RMI 5 (26.3%).… [ABSTRACT FROM AUTHOR]
- Published
- 2007
4. Case 6—2005 Thoracotomy After Myocardial Infarction and Intracoronary Stenting: A Balance Between Myocardial Recovery and Procedural Risk.
- Author
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Maslow, Andrew, Bert, Arthur, and Ng, Thomas
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- 2005
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5. A multicenter study of the tolerability of tirofiban versus placebo in patients undergoing planned intracoronary stent placement
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Juergens, Craig P., White, Harvey D., Belardi, Jorge A., Macaya, Carlos, Soler-Soler, Jordi, Meyer, Beat J., Levy, Richard D., Bunt, Ton, Menten, Joris, Herrmann, Howard C., Adgey, A.A. Jennifer, and Tarnesby, Georgia
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CARDIAC surgery , *GLYCOPROTEINS , *TRANSLUMINAL angioplasty - Abstract
Background: The use of intravenous glycoprotein IIb/IIIa—receptor antagonists has been shown to improve outcomes in patients undergoing percutaneous transluminal coronary angioplasty (PTCA). Tirofiban has shown benefit in a wide range of patients presenting with acute coronary syndromes. Although this agent has been used in patients undergoing percutaneous coronary intervention, a literature search identified no prospective data comparing tirofiban with placebo in patients undergoing planned intracoronary stent placement.Objective: This study examined the tolerability of tirofiban in patients undergoing percutaneous intervention with planned intracoronary stent placement.Methods: This was a multinational, multicenter, prospective, randomized, double-blind, placebo-controlled trial in patients scheduled to undergo PTCA with planned intracoronary stent placement. Patients were randomized in a 3:2 ratio to receive tirofiban as an intravenous bolus (10 μg/kg over 3 minutes) and maintenance infusion (0.10 μg/kg per minute for 36 hours) or a bolus and infusion of placebo. All patients received periprocedural aspirin and heparin and an optional postprocedural thienopyridine (ticlopidine or clopidogrel). Laboratory and safety monitoring were performed throughout the 36 hours after the procedure and at hour 40 or hospital discharge. The primary end point was the proportion of patients with bleeding, defined according to Thrombolysis in Myocardial Infarction (TIMI) trial criteria. The number of patients with cardiac events (death, myocardial infarction, urgent revascularization) during the first 30 days after stent placement was also assessed.Results: Eight hundred ninety-four patients (536 tirofiban, 358 placebo) were enrolled, all of whom received aspirin and heparin periprocedurally and optional ticlopidine or clopidogrel after the procedure. No significant between-group differences were observed in the incidence of TIMI major bleeding (0.2% tirofiban, 0.6% placebo) or any TIMI bleeding (3.2% and 1.7%, respectively). The incidence of TIMI minor bleeding was higher with tirofiban than with placebo (2.8% vs 0.6%). The 30-day incidence of the composite end point of any cardiac event was 3.9% in both groups.Conclusions: On a background of concomitant aspirin, heparin, and a thienopyridine, tirofiban was generally well tolerated in patients undergoing PTCA with planned intracoronary stent placement. Further investigation is needed to ascertain the optimal dosing of tirofiban and heparin to achieve reductions in ischemic complications of intracoronary stenting with an acceptable incidence of bleeding complications. [Copyright &y& Elsevier]
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- 2002
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6. Device implantation for patients on antiplatelets and anticoagulants: Use of suction drain
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Sachin Yalagudri, Sandeep G. Nair, Daljeet Kaur Saggu, Sridevi Chennapragada, Sanjeev S. Mukherjee, and CalamburNarasimhan
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Pacemaker, Artificial ,medicine.medical_specialty ,RD1-811 ,Intracoronary stent ,Device implantation ,Postoperative Hemorrhage ,Surgical drain ,030204 cardiovascular system & hematology ,Anticoagulation ,03 medical and health sciences ,0302 clinical medicine ,Hematoma ,Risk Factors ,Suction drain ,Atrial Fibrillation ,Antithrombotic ,medicine ,Humans ,Diseases of the circulatory (Cardiovascular) system ,In patient ,030212 general & internal medicine ,Antiplatelets ,Retrospective Studies ,business.industry ,Pocket hematoma ,Anticoagulants ,Thrombosis ,Atrial fibrillation ,Retrospective cohort study ,Heparin ,medicine.disease ,Defibrillators, Implantable ,Surgery ,RC666-701 ,Drainage ,Cardiac Electrophysiology ,Antithrombotic treatment ,Cardiology and Cardiovascular Medicine ,business ,Platelet Aggregation Inhibitors ,medicine.drug - Abstract
Background and objectives: Cardiovascular implantable electronic devices (CIED) are frequently implanted in patients on anti-thrombotic agents. Pocket hematomas are more likely to occur in these patients. The use of a sterile surgical drain in the pulse generator pocket site could prevent hematomas, but fear of infection precludes its use. The objective of the present study is to study the safety and efficacy of surgical drain in patients on antithrombotics undergoing CIED implantations. Methods: This is a single-centre, retrospective study involving patients undergoing CIED implantations on antithrombotics (antiplatelets and anticoagulants) from August 2013 to July 2016. Patients with high risk of thromboembolism were continued on oral antithrombotics or were bridged with heparin after stopping oral antithrombotics. A sterile close wound suction drain was placed in device pockets following CIED implantations. Post procedure, pressure dressing was applied and removed after 12 h once the drain volume was less than 10 ml in 24 h. Results: Sixty seven patients required surgical drain implantation. Major indications for antithrombotic use were presence of intracoronary stent, atrial fibrillation and mechanical valve replacements. The mean post-procedural hospital stay was 3 ± 0.9 days and mean overall drain was 16.6 ± 8.2 ml. At a mean follow up of 17.6 ± 8.2 months, one patient (1.4%) had pocket hematoma. There were no infections. Conclusion: The use of a surgical drain in CIED implantation significantly reduces the risk of hematoma formation without increasing the risk of infection. Antithrombotic drugs can be safely continued at the time of implantation of cardiac devices. Keywords: Pocket hematoma, Antithrombotic treatment, Device implantation, Anticoagulation, Antiplatelets, Surgical drain
- Published
- 2018
7. Assessment Of Intra-coronary Stent Location And Extension In Intravascular Ultrasound Sequences
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Petia Radeva, Francesco Ciompi, Xavier Carrillo, Simone Balocco, Josepa Mauri, and Juan Rigla
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Catheters ,Intracoronary stent ,Computer science ,medicine.medical_treatment ,Lumen (anatomy) ,030218 nuclear medicine & medical imaging ,Pròtesis de Stent ,Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] ,03 medical and health sciences ,All institutes and research themes of the Radboud University Medical Center ,Percutaneous Coronary Intervention ,0302 clinical medicine ,Coronary stent ,Intravascular ultrasound ,medicine ,Humans ,Ultrasons en medicina ,Ultrasonography ,IVUS ,medicine.diagnostic_test ,ultrasound ,business.industry ,Ultrasound ,Visió per ordinador ,Stent ,Percutaneous coronary intervention ,General Medicine ,malapposition ,Coronary Vessels ,Coronary arteries ,Catheter ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,stent ,Stents ,Computer vision ,Adsorption ,business ,Ultrasonics in medicine ,Stents (Surgery) ,Artery ,Biomedical engineering - Abstract
PurposeAn intraluminal coronary stent is a metal scaffold deployed in a stenotic artery during percutaneous coronary intervention (PCI). In order to have an effective deployment, a stent should be optimally placed with regard to anatomical structures such as bifurcations and stenoses. Intravascular ultrasound (IVUS) is a catheter-based imaging technique generally used for PCI guiding and assessing the correct placement of the stent. A novel approach that automatically detects the boundaries and the position of the stent along the IVUS pullback is presented. Such a technique aims at optimizing the stent deployment. MethodsThe method requires the identification of the stable frames of the sequence and the reliable detection of stent struts. Using these data, a measure of likelihood for a frame to contain a stent is computed. Then, a robust binary representation of the presence of the stent in the pullback is obtained applying an iterative and multiscale quantization of the signal to symbols using the Symbolic Aggregate approXimation algorithm. ResultsThe technique was extensively validated on a set of 103 IVUS of sequences of invivo coronary arteries containing metallic and bioabsorbable stents acquired through an international multicentric collaboration across five clinical centers. The method was able to detect the stent position with an overall F-measure of 86.4%, a Jaccard index score of 75% and a mean distance of 2.5mm from manually annotated stent boundaries, and in bioabsorbable stents with an overall F-measure of 88.6%, a Jaccard score of 77.7 and a mean distance of 1.5mm from manually annotated stent boundaries. Additionally, a map indicating the distance between the lumen and the stent along the pullback is created in order to show the angular sectors of the sequence in which the malapposition is present. ConclusionsResults obtained comparing the automatic results vs the manual annotation of two observers shows that the method approaches the interobserver variability. Similar performances are obtained on both metallic and bioabsorbable stents, showing the flexibility and robustness of the method.
- Published
- 2018
8. Twenty-two years angiographic and clinical follow-up of the first patient treated with intracoronary stent placement for acute vessel closure following percutaneous transluminal coronary angioplasty
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Ulrich Sigwart and Jean-Jacques Goy
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medicine.medical_specialty ,Percutaneous transluminal coronary angioplasty ,Time Factors ,Intracoronary stent ,medicine.medical_treatment ,Anterior Descending Coronary Artery ,Balloon ,Internal medicine ,Angioplasty ,medicine.artery ,medicine ,Humans ,cardiovascular diseases ,Angioplasty, Balloon, Coronary ,business.industry ,Coronary Stenosis ,Percutaneous coronary intervention ,Middle Aged ,Surgery ,Radiography ,Treatment Outcome ,surgical procedures, operative ,Coronary Occlusion ,Right coronary artery ,Conventional PCI ,cardiovascular system ,Cardiology ,Female ,Stents ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
We report here the longest follow-up of a patient treated with intracoronary stent placement for acute vessel closure following conventional balloon angioplasty. The patient is a 52-year-old lady who developed abrupt left anterior descending coronary artery (LAD) closure shortly after double vessel percutaneous coronary intervention (PCI) for symptomatic stenoses to the right coronary artery (RCA) and LAD on 13 June …
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- 2017
9. Assessment of coronary artery aneurysm after stent placement for myocardial infarction: evaluation by multidetector computed tomography.
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Gade, Christopher L., Lin, Fay, Feldman, Dmitriy N., Weinsaft, Jonathan W., and Min, James K.
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- 2008
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10. Clinical usefulness of the 16-slice computed tomography Coronary angiography for evaluation of early phase intracoronary stent patency
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Yüksel S., Şahin M., Elmali M., Soylu A.I., Çelenk C., Demircan S., Yilmaz Ö., and Ondokuz Mayıs Üniversitesi
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Multislice computed tomography ,Stent restenosis ,Intracoronary stent ,Stent patency ,cardiovascular diseases ,Conventional coronary angiography ,equipment and supplies ,Coronary artery disease - Abstract
Coronary artery stenting is currently treatment of choice for management of coronary artery disease. Stent restenosis is the most important problem during follow up. Conventional coronary angiography is the gold standart for assessment of intracoronary stent patency. It is an invasive method and even though rare, has some significant risks. For this reason, noninvasive imaging methods are necessary to evaluate stent patency. Noninvasive methods such as the exercise test, myocardial perfusion scintigraphy and stress echocardiography could not reach enough diagnostic accuracy. Multislice computed tomography (MSCT) has been under investigation for stent restenosis detection. Aim of this study is to investigate usefulness of the 16-slice CT for evaluation of stent patency in patients with suspicion of stent restenosis. Thirty six patients were included in the study and 16-slice CT and conventional coronary angiographies were performed in all patients. The results of 16-slice CT and conventional coronary angiography were compared. Sufficient or good quality imaging with 16-slice CT angiography was obtained in 69% of all patients. Sixteen-slice CT angiography detected 42/49 (86%) stents and gave the correct localization for all of the detected stents. Stent lumen could be assessed in 30 (61%) stents and according to the results of luminal assessment, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and diagnostic accuracy of 16-slice MSCT were calculated as 33%, 95%, 75%, 77% and 77%, respectively. According to these results, the diagnostic performance of 16-slice CT angiography for detection of stent restenosis was relatively low. However, the assessment of relatively small number of stents because of insufficient heart rate control did not allow reliable and precise evaluation. Our results showed that diagnostic capacity of 16-slice CT angiography for detection of coronary stent restenosis is limited. © 2013 OMU.
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- 2013
11. An Unexpected Guest in the Proximal Ascending Aorta.
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Toffetti, Laura, Pugno, Alice, Massironi, Laura, Tresoldi, Silvia, and Mantero, Antonio G.
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AORTA , *COMPUTED tomography , *ECHOCARDIOGRAPHY , *MYOCARDIAL infarction , *MEDICAL equipment reliability , *DRUG-eluting stents - Abstract
A 72‐year‐old asymptomatic woman with history of ischemic heart disease and repeat coronary percutaneous interventions underwent a routine transthoracic echocardiogram (TTE). A 9‐mm long, fixed, echo dense mass was visualized in the proximal ascending aorta. We performed a two and three‐dimensional transesophageal echocardiogram and a cardiac multidetector‐row contrast‐enhanced computed tomography with ECG gating, which revealed the unexplained mass to be an ostial right coronary artery stent protruding 9 mm into the ascending aorta. Coronary stent protrusion is a very unusual finding observed during routine 2DTTE, but it has many potential clinical consequences. This case suggests that 2DTTE is feasible and useful for the identification and follow‐up of protruding ostial coronary stents. [ABSTRACT FROM AUTHOR]
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- 2015
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12. Comparison of immediate and intermediate-term results of intravascular ultrasound versus angiography-guided Palmaz-Schatz stent implantation in matched lesions
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Remo Albiero, Bernhard Reimers, Michael Schlüter, T. Rau, D. G. Mathey, Joachim Schofer, Antonio Colombo, C. Di Mario, and Jonathan M. Tobis
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Adult ,Male ,medicine.medical_specialty ,Intracoronary stent ,Coronary Disease ,Coronary Angiography ,Restenosis ,Recurrence ,Physiology (medical) ,Intravascular ultrasound ,medicine ,Humans ,cardiovascular diseases ,Aged ,Retrospective Studies ,Ultrasonography ,Intermediate term ,Palmaz schatz stent ,medicine.diagnostic_test ,business.industry ,Middle Aged ,medicine.disease ,equipment and supplies ,Coronary Vessels ,surgical procedures, operative ,Angiography ,Female ,Stents ,Radiology ,Cardiology and Cardiovascular Medicine ,business ,Early phase ,Complication - Abstract
Background Intravascular ultrasound (IVUS) provides more precise information than angiography about vascular dimensions. This information is used by some centers to optimize intracoronary stent implantation. There are no direct comparisons of the effects on restenosis of optimal IVUS-guided versus angiography-directed high-pressure stenting. Methods and Results Lesions of patients who had a 6-month angiographic follow-up study were eligible for matching. From 445 consecutive lesions treated by Palmaz-Schatz (P-S) stenting guided by IVUS (IVUS group) in Milan, 173 lesions were individually matched with 173 of 476 consecutive lesions treated by P-S stenting directed by angiography (Angio group) in Hamburg. Lesions were selected by a computerized program according to baseline clinical, angiographic, and procedural variables. Immediate and 6-month angiographic results were retrospectively compared, distinguishing an “early phase” from a “late phase.” This distinction was based on the more aggressive dilation strategy with larger balloons and more demanding IVUS criteria for optimal stent expansion used in Milan in the early phase. In both phases, a larger minimum lumen diameter (MLD) immediately after stenting and after 6 months was achieved in the IVUS group than in the Angio group. In the early phase, the dichotomous restenosis rate was lower in the IVUS group than in the Angio group (9.2% versus 22.3%; P =.04). In the late phase, there was no difference in restenosis between the groups (22.7% versus 23.7%; P =1.0). Conclusions In matched lesions treated with high-pressure stenting, IVUS guidance achieved a larger MLD than angiographic guidance. However, in the IVUS group, the restenosis rate was lower only in the early phase, when balloons larger than currently used were selected to maximize the stent lumen area.
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- 1997
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