Displaying publications 61 - 80 of 151 in total

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  1. Leenders GE, Liew HB, Stella PR
    Cardiovasc Revasc Med, 2018 12;19(8S):58-59.
    PMID: 30115559 DOI: 10.1016/j.carrev.2018.03.016
    A 62-year old male underwent treatment of a bifurcation lesion in the left anterior descending coronary artery using provisional stenting with a jailed wire technique. Severe longitudinal stent deformation and unravelment of the stent part proximal of the bifurcation occurred when we tried to pull the jailed wire from the side branch. The described case poses a caution on the use of this specific stent(-design) in bifurcation lesions.
    Matched MeSH terms: Drug-Eluting Stents*
  2. Rosenberg M, Waliszewski M, Krackhardt F, Chin K, Wan Ahmad WA, Caramanno G, et al.
    J Interv Cardiol, 2019;2019:6548696.
    PMID: 31772539 DOI: 10.1155/2019/6548696
    Objectives: We analyzed the efficacy of drug coated balloons (DCB) as a stand-alone-therapy in de novo lesions of large coronary arteries. DCBs seem to be an attractive alternative for the stent-free interventional treatment of de novo coronary artery disease (CAD). However, data regarding a DCB-only approach in de novo CAD are currently limited to vessels of small caliber.

    Methods: By means of propensity score (PS) matching 234 individuals with de novo CAD were identified with similar demographic characteristics. This patient population was stratified in a 1:1 fashion according to a reference vessel diameter cut-off of 2.75 mm in small and large vessel disease. The primary endpoint was the rate of clinically driven target lesion revascularization (TLR) at 9 months.

    Results: Patients with small vessel disease had an average reference diameter of 2.45 ± 0.23 mm, while the large vessel group averaged 3.16 ± 0.27 mm. Regarding 9-month major adverse cardiac event (MACE), 5.7% of the patients with small and 6.1% of the patients with large vessels had MACE (p=0.903). Analysis of the individual MACE components revealed a TLR rate of 3.8% in small and 1.0% in large vessels (p=0.200). Of note, no thrombotic events in the DCB treated coronary segments occurred in either group during the 9-month follow-up.

    Conclusions: Our data demonstrate for the first time that DCB-only PCI of de novo lesions in large coronary arteries (>2.75 mm) is safe and as effective. Interventional treatment for CAD without permanent or temporary scaffolding, demonstrated a similar efficacy for large and small vessels.

    Matched MeSH terms: Drug-Eluting Stents*
  3. Alwi M, Choo KK, Latiff HA, Kandavello G, Samion H, Mulyadi MD
    J Am Coll Cardiol, 2004 Jul 21;44(2):438-45.
    PMID: 15261945 DOI: 10.1016/j.jacc.2004.03.066
    Objectives: This study was designed to assess the safety, efficacy, medium-term outcome, and complications of patent ductus arteriosus (PDA) stenting in duct-dependent pulmonary circulation.
    Background: Patent ductus arteriosus stenting has been proposed as an alternative to surgical shunt on account of postoperative morbidity and complications of surgical shunting.
    Methods: Between April 2000 and February 2003, 69 patients with duct-dependent pulmonary circulation underwent cardiac catheterization with the intent of PDA stenting as first palliative procedure. Patients with critical pulmonary stenosis and pulmonary atresia with intact ventricular septum post-radiofrequency valvotomy who had PDA stenting were excluded. Thirteen more patients were excluded because of branch pulmonary artery (PA) stenosis. The follow-up was by clinical examination, echocardiography, and repeat cardiac catheterization at six to nine months following the procedure.
    Results: Patent ductus arteriosus stenting was successful in 51 patients (91.1%) and failed in 5 patients (8.9%). The mean narrowest PDA diameter was 1.9 +/- 0.6 mm. The mean procedure and fluoroscopy time were 95.7 min and 29.4 min, respectively. In one patient the stent dislodged and migrated to the left femoral artery and another patient developed transient intravascular hemolysis. There was no procedure-related mortality. Three patients (5.9%) died one day to two months after the procedure. At follow-up (3.2 months to 2.4 years), 8 patients developed significant stent stenosis requiring reintervention. Seven patients developed worsening of preexisting branch PA stenosis. The freedom from reintervention was 89% and 55% at 6 months and 1 year, respectively.
    Conclusions: Patent ductus arteriosus stenting is an attractive alternative to surgical shunt in a majority of patients with duct-dependent circulation. An absolute contraindication to this technique is the presence of branch pulmonary stenosis.
    Matched MeSH terms: Stents*
  4. Mori Y, Itoi T, Baron TH, Takada T, Strasberg SM, Pitt HA, et al.
    J Hepatobiliary Pancreat Sci, 2018 Jan;25(1):87-95.
    PMID: 28888080 DOI: 10.1002/jhbp.504
    Since the publication of the Tokyo Guidelines in 2007 and their revision in 2013, appropriate management for acute cholecystitis has been more clearly established. Since the last revision, several manuscripts, especially for alternative endoscopic techniques, have been reported; therefore, additional evaluation and refinement of the 2013 Guidelines is required. We describe a standard drainage method for surgically high-risk patients with acute cholecystitis and the latest developed endoscopic gallbladder drainage techniques described in the updated Tokyo Guidelines 2018 (TG18). Our study confirmed that percutaneous transhepatic gallbladder drainage should be considered the first alternative to surgical intervention in surgically high-risk patients with acute cholecystitis. Also, endoscopic transpapillary gallbladder drainage or endoscopic ultrasound-guided gallbladder drainage can be considered in high-volume institutes by skilled endoscopists. In the endoscopic transpapillary approach, either endoscopic naso-gallbladder drainage or gallbladder stenting can be considered for gallbladder drainage. We also introduce special techniques and the latest outcomes of endoscopic ultrasound-guided gallbladder drainage studies. Free full articles and mobile app of TG18 are available at: http://www.jshbps.jp/modules/en/index.php?content_id=47. Related clinical questions and references are also included.
    Matched MeSH terms: Stents*
  5. Rehman R, Marhisham MC, Alwi M
    Future Cardiol, 2018 01;14(1):55-73.
    PMID: 29199861 DOI: 10.2217/fca-2017-0053
    Patent ductus arteriosus (PDA) stenting has gained acceptance for palliation in cyanotic congenital heart disease. The PDA in tetralogy of Fallot with pulmonary atresia (ToF-PA) arises, in the left aortic arch, from underneath the arch and connects to the proximal left pulmonary artery, often resulting in stenosis. The PDA is usually elongated and tortuous, making stent implantation challenging. Shorter duration of palliation, aggravation of branch pulmonary artery stenosis resulting in poor growth and difficulty at surgery makes ductal stenting controversial. Access via the carotid and axillary artery reduces complexity of the procedure and improves success, with recent data demonstrating good pulmonary artery growth. Advances in bioresorbable stents offer future promise and will likely resolve some controversies surrounding PDA stenting in ToF-PA.
    Matched MeSH terms: Stents*
  6. Kherad B, Waliszewski M, Leschke M, Kader MA, Bang LH, Ruiz-Poveda FL, et al.
    J Interv Cardiol, 2018 Jun;31(3):338-344.
    PMID: 29205492 DOI: 10.1111/joic.12472
    OBJECTIVES: To evaluate the 9-month safety and efficacy of polymer-free sirolimus eluting drug eluting stents in septuagenarians and octogenarians.

    METHODS: An all-comer, worldwide single armed trial (ClinicalTrials.gov Identifier NCT02629575) was conducted to demonstrate the safety and efficacy of an ultra-thin strut, polymer-free sirolimus eluting stent (PF-SES). The primary endpoint was the 9-month target revascularization rate (TLR). Secondary endpoints included the rates of major adverse cardiac events (MACE), stent thrombosis (ST) and bleeding (BARC) in septuagenarians (≥70 years, <80 years), and in octogenarians (≥80 years) to be compared to the younger patient group (<70 years).

    RESULTS: A total of 1607 patients were treated with PF-SES in the sub-70-year-old age group, 694 in septuagenarians, and 371 in the octogenarian patient group. At 9 months, the MACE rates were 7.2% in octogenarians, 5.3% in septuagenarians, and 3.0% in the younger patient group (P = 0.001). These were mostly driven by all-cause mortality (4.4% vs 1.9% vs 0.6%, P 

    Matched MeSH terms: Drug-Eluting Stents*
  7. Tan WT, Liew YM, Mohamed Mokhtarudin MJ, Pirola S, Wan Ab Naim WN, Amry Hashim S, et al.
    J Biomech Eng, 2021 Aug 01;143(8).
    PMID: 33764388 DOI: 10.1115/1.4050642
    A computational approach is used to investigate potential risk factors for distal stent graft-induced new entry (dSINE) in aortic dissection (AD) patients. Patient-specific simulations were performed based on computed tomography images acquired from six AD patients (three dSINE and three non-dSINE) to analyze the correlation between anatomical characteristics and stress/strain distributions. Sensitivity analysis was carried out using idealized models to independently assess the effect of stent graft length, stent tortuosity and wedge apposition angle at the landing zone on key biomechanical variables. Mismatch of biomechanical properties between the stented and nonstented regions led to high stress at the distal stent graft-vessel interface in all patients, as well as shear strain in the neighboring region, which coincides with the location of tear formation. Stress was observed to increase with the increase of stent tortuosity (from 263 kPa at a tortuosity angle of 50 deg to 313 kPa at 30 deg). It was further amplified by stent graft landing at the inflection point of a curve. Malapposition of the stent graft led to an asymmetrical segment within the aorta, therefore changing the location and magnitude of the maximum von Mises stress substantially (up to +25.9% with a +25 deg change in the distal wedge apposition angle). In conclusion, stent tortuosity and wedge apposition angle serve as important risk predictors for dSINE formation in AD patients.
    Matched MeSH terms: Stents*
  8. Liew NC, Moissinac K, Lee L, Gee T, Zezeman RB
    Med J Malaysia, 2011 Oct;66(4):386-8; quiz 389.
    PMID: 22299571 MyJurnal
    There has been much progress made in the management of peripheral arterial disease (PAD) in the past two decades. Progress in the understanding of the endothelial-platelet interaction during health and disease state have resulted in better antiplatelet drugs that can prevent platelet aggregation, activation and thrombosis during angioplasty and stenting. Collaborative effort by different international societies has resulted in a consensus guideline that recommends the modality of intervention in certain disease states. Progress in perioperative care has reduced the morbidity and mortality associated with peripheral vascular reconstruction surgery. Nevertheless, the advances in percutaneous peripheral intervention (PPI) have made a paradigm shift in the current management of patients. The procedure is safe and effective and is emerging as the first choice revascularization procedure.
    Matched MeSH terms: Stents
  9. Ali RM, Degenhardt R, Zambahari R, Tresukosol D, Ahmad WA, Kamar Hb, et al.
    EuroIntervention, 2011 May;7 Suppl K:K83-92.
    PMID: 22027736 DOI: 10.4244/EIJV7SKA15
    Coronary lesions in diabetics (DM) are associated with a high recurrence following percutaneous coronary intervention (PCI), even after drug-eluting stent (DES) deployment. Encouraging clinical data of the drug-eluting balloon catheter (DEB) SeQuent Please warrant its investigation in these patients.
    Matched MeSH terms: Stents*; Drug-Eluting Stents*
  10. Lim WK, Leong MC, Samion H
    Ann Pediatr Cardiol, 2016 5 24;9(2):183-5.
    PMID: 27212859 DOI: 10.4103/0974-2069.173549
    A 1.7 kg infant with obstructed supracardiac total anomalous pulmonary venous drainage (TAPVD) presented with severe pulmonary hypertension secondary to vertical vein obstruction. The child, in addition, had a large omphalocele that was being managed conservatively. The combination of low weight, unoperated omphalocele, and severe pulmonary hypertension made corrective cardiac surgery very high-risk. Therefore, transcatheter stenting of the stenotic vertical vein, as a bridge to corrective surgery was carried out. The procedure was carried out through the right internal jugular vein (RIJ). The stenotic segment of the vertical vein was stented using a coronary stent. After procedure, the child was discharged well to the referred hospital for weight gain and spontaneous epithelialization of the omphalocele. Stenting of the vertical vein through the internal jugular vein can be considered in very small neonates as a bridge to repair obstructed supracardiac total anomalous venous drainage.
    Matched MeSH terms: Stents
  11. Krackhardt F, Kočka V, Waliszewski MW, Utech A, Lustermann M, Hudec M, et al.
    Open Heart, 2017 06 06;4(2):e000592.
    PMID: 28761678 DOI: 10.1136/openhrt-2017-000592
    OBJECTIVE: The objective of this study was to assess the safety and efficacy of a polymer-free sirolimus coated, ultrathin strut drug-eluting stent (PF-SES) in an unselected patient population with a focus on acute coronary syndrome (ACS). Furthermore, stable coronary artery disease (CAD) with short (≤6 months) versus long (>6 months) dual antiplatelet therapy (DAPT) were also studied.

    METHODS: Patients who received PF-SES were investigated in an unselected large-scale international, single-armed, multicenter, 'all comers' observational study. The primary endpoint was the 9-month target lesion revascularisation (TLR) rate, whereas secondary endpoints included the 9-month major adverse cardiac events (MACE) and procedural success rates. A priori defined subgroups such as patients with ACS, diabetes, lesion subsets and procedural characteristics relative to DAPT were investigated.

    RESULTS: A total of 2877 patients of whom 1084 had ACS were treated with PF-SES (1.31±0.75 stents per patient). At 9 months, the accumulated overall TLR rate was 2.3% (58/2513). There was no significant difference between ACS and stable CAD (2.6% vs 2.1%, p=0.389). However, the overall MACE rate was 4.3% (108/2513) with a higher rate in patients with ACS when compared with the stable CAD subgroup (6.1%, 58/947 vs 3.2%, 50/1566, p<0.001).

    CONCLUSIONS: PF-SES angioplasty is safe and effective in the daily clinical routine with low rates of TLR and MACE in an unselected patient population. Our data are in agreement with prior clinical findings that extended DAPT duration beyond 6 months do not improve clinical outcomes in patients with stable CAD (ClinicalTrials.gov Identifier NCT02629575).

    TRIAL REGISTRATION NUMBER: NCT02629575.

    Matched MeSH terms: Drug-Eluting Stents
  12. Alghrairi M, Sulaiman N, Mutashar S
    Sensors (Basel), 2020 Aug 01;20(15).
    PMID: 32752231 DOI: 10.3390/s20154303
    In-stent restenosis concerning the coronary artery refers to the blood clotting-caused re-narrowing of the blocked section of the artery, which is opened using a stent. The failure rate for stents is in the range of 10% to 15%, where they do not remain open, thereby leading to about 40% of the patients with stent implantations requiring repeat procedure within one year, despite increased risk factors and the administration of expensive medicines. Hence, today stent restenosis is a significant cause of deaths globally. Monitoring and treatment matter a lot when it comes to early diagnosis and treatment. A review of the present stent monitoring technology as well as the practical treatment for addressing stent restenosis was conducted. The problems and challenges associated with current stent monitoring technology were illustrated, along with its typical applications. Brief suggestions were given and the progress of stent implants was discussed. It was revealed that prime requisites are needed to achieve good quality implanted stent devices in terms of their size, reliability, etc. This review would positively prompt researchers to augment their efforts towards the expansion of healthcare systems. Lastly, the challenges and concerns associated with nurturing a healthcare system were deliberated with meaningful evaluations.
    Matched MeSH terms: Stents
  13. Abdulgani, Hafil Budianto, Oemar, Hamed
    Medical Health Reviews, 2009;2009(1):43-58.
    MyJurnal
    Coarctation of the aorta is a congenital anomaly presented by the combination of upper body hypertension and weak or absent femoral pulses. Increased morbidity and shortened life span of infants born with coarctation suggest that the malformation should be treated early in life. Surgical intervention has been recognized as the gold standard of treatment for children born with this defect. Unfortunately, studies in many institutions have shown that the diagnosis of coarctation of the aorta is often missed. As a consequence, many patients with coarctation of the aorta are not detected until adult life. Long-term follow-up of adult patients following surgical intervention for coarctation of the aorta reveals ongoing risks; hence, less invasive endovascular therapy becomes an alternative approach. Literature’s review was performed to compare the results of endovascular therapy (stenting and angioplasty) with surgical techniques to repair adult with coarctation of the aorta. The immediate improvement in hypertension and the morbidity were similar. Although stenting can be expected to show superiority to balloon angioplasty alone, that was not apparent when comparing these two endovascular approaches. The morbidity, mortality, and repeat intervention rates were just as high for stenting as they were for angioplasty or for a combination of both modalities. The majority of surgical complications were minor (i.e., vasculitis, bleeding), whereas the majority of endovascular complications could be considered more severe (i.e., dissection, traumatic aneurysm, stroke). Surgical therapy was associated with a very low risk of restenosis and recurrence, whereas endovascular therapy had a much higher incidence of restenosis and the need for repeat interventions. In conclusion, surgical therapy is superior compared to other modes of interventional therapy for adult with coarctation of the aorta, and it shall remain as current mode of therapy for adult with coarctation of the aorta.
    Matched MeSH terms: Stents
  14. Yap PY, Hwang JS, Bong JJ
    Asian J Surg, 2017 Mar 10.
    PMID: 28286020 DOI: 10.1016/j.asjsur.2017.01.003
    BACKGROUND/OBJECTIVE: Postoperative pancreatic fistula (POPF) remains an important cause of morbidity and mortality after pancreaticoduodenectomy. Pancreaticogastrostomy (PG) as a reconstruction method after pancreaticoduodenectomy is a safe and optional surgical technique in decreasing the risk of POPF. In this study, a retrospective analysis was carried out to evaluate a new modification of PG technique that uses a two-layer anastomoses with an internal stent.

    METHODS: Forty-seven patients underwent this newly modified PG technique between February 2012 and August 2016. Demographics, histopathological findings, type of surgery performed, perioperative parameters, postoperative length of stay, postoperative complications and interventional procedures, follow-up, and mortality data were collected and analyzed. Clavien-Dindo classification was used to grade the complications' severity.

    RESULTS: Postoperative mortality was 4.25%, unrelated to POPF, and postoperative morbidity was 44.68%. Thirteen patients had severe (>Grade IIIa) complications, according to Clavien-Dindo classification. As classified in accordance to the International Study Group of Pancreatic Fistula, 24 (51.06%) patients developed Grade A POPF, and no occurrence of Grade B/C POPF was noted. All patients recovered uneventfully with successful treatment interventions.

    CONCLUSION: The reported PG anastomotic technique is a safe and dependable reconstruction procedure with acceptable morbidity and mortality.

    Matched MeSH terms: Stents
  15. Azarisma, S.M.S., Rosli, M.A.B.
    MyJurnal
    We report a-56-year old army pensioner who presented initially to a peripheral hospital with acute ST-elevation inferior myocardial infarction thrombolysed with streptokinase. He was subsequently referred to the National Heart Institute (Institut Jantung Negara, Malaysia) for coronary revascularization. Coronary angiogram revealed an ectatic right coronary artery with discrete lesions at the proximal and distal segments stented with bare metal stents (BMS). Post dilatation shots revealed a wire-induced, distal dissection at the posterior left ventricular artery remedied by balloon angioplasty but resulting in balloon-induced crumpling of the distal BMS. We discuss the importance of sequential, distal-to-proximal coronary intervention, stent crumpling and remedial strategies.
    Matched MeSH terms: Stents
  16. Alwi M, Mood MC
    Interv Cardiol Clin, 2013 Jan;2(1):93-113.
    PMID: 28581990 DOI: 10.1016/j.iccl.2012.09.011
    Stenting of patent ductus arteriosus (PDA) is an attractive alternative to the surgical aortopulmonary shunt in the palliation of cyanotic congenital heart disease. However, the diverse morphology of PDA in this setting limits its role, as stenting an overly tortuous duct may not be feasible, and in a significant number of patients, ductus-related pulmonary artery stenosis contraindicates this procedure. The major acute complications are stent migration, thrombosis, and cardiac failure. Early failure of palliation caused by in-stent stenosis is another limitation of this procedure.

    Study site: Institut Jantung Negara (IJN), Kuala Lumpur, Malaysia
    Matched MeSH terms: Stents
  17. Hayashi T, Akhtar S, Alwi M
    Ann Pediatr Cardiol, 2017 6 2;10(2):206-208.
    PMID: 28566833 DOI: 10.4103/0974-2069.205143
    We report our experience with a stent migration after right ventricle outflow tract stenting and converted to patent ductus arteriosus stenting in Tetralogy of Fallot (TOF) with severe infundibular stenosis. Finally, the patient achieved to TOF repair, and the migrated stent was removed without any complication.
    Matched MeSH terms: Stents
  18. Montefusco A, D'Ascenzo F, Gili S, Smolka G, Chieffo A, Baumbach A, et al.
    Catheter Cardiovasc Interv, 2019 02 01;93(2):208-215.
    PMID: 30298593 DOI: 10.1002/ccd.27809
    OBJECTIVES: To compare the effectiveness and safety of self-expandable, sirolimus-eluting Stentys stents (SES) and second-generation drug-eluting stents (DES-II) for the treatment of the unprotected left main (ULM).

    BACKGROUND: SES may provide a valuable option to treat distal ULM, particularly when significant caliber gaps with side branches are observed.

    METHODS: Patients from the multicenter SPARTA (clinicaltrials.gov: NCT02784405) and FAILS2 registries were included. Propensity-score with matching was performed to account for the lack of randomization. Primary end-point was the rate of major adverse cardiovascular events (MACE, a composite of all cause death, myocardial infarction, target lesion revascularization [TLR], unstable angina and definite stent thrombosis [ST]). Single components of MACE were the secondary end-points.

    RESULTS: Overall, 151 patients treated with SES and 1270 with DES-II were included; no differences in MACE rate at 250 days were observed (9.8% vs. 11.5%, P = 0.54). After propensity score with matching, 129 patients treated with SES and 258 with DES-II, of which about a third of female gender, were compared. After a follow-up of 250 days, MACE rate did not differ between the two groups (9.9% vs. 8.5%, P = 0.66), as well as the rate of ULM TLR (1.6% vs. 3.1%, P = 0.36) and definite ST (0.8% vs. 1.2%, P = 0.78). These results were consistent also when controlling for the treatment with provisional vs. 2-stents strategies for the ULM bifurcation.

    CONCLUSION: SES use for ULM treatment was associated with a similar MACE rate compared to DES-II at an intermediate-term follow-up. SES might represent a potential option in this setting.

    Matched MeSH terms: Self Expandable Metallic Stents*; Drug-Eluting Stents*
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