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Khatri M, Kumar S, Mahfooz K, Sugandh F, Dembra D, Mehak F, Rachna Panjwani GA, Islam H, Islam R, Ibn E Ali Jaffari SM, Patel T, Kumar A, Kumar N, Varrassi G. Clinical Outcomes of Polymer-Free Versus Polymer-Coated Drug-Eluting Stents in Patients With Coronary Artery Disease: A Systematic Review and Meta-Analysis. Cureus 2023; 15:e38215. [PMID: 37252538 PMCID: PMC10224769 DOI: 10.7759/cureus.38215] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023] Open
Abstract
Drug-eluting stents have transformed the treatment of coronary artery disease (CAD), and there are two types: polymer-free and polymer-coated stents. Polymer-free stents have a coating that is quickly absorbed by the body, whereas polymer-coated stents have a coating that remains on the stent surface. This meta-analysis and systematic review aimed to compare the clinical outcomes of these two stent types in patients with coronary artery disease. The literature and abstracts from significant databases were reviewed to compare polymer-free drug-eluting stents (PF-DES) and polymer-coated drug-eluting stents (PC-DES) for the treatment of coronary artery disease (CAD). The primary efficacy endpoints of the study were all-cause mortality and deaths from cardiovascular and non-cardiovascular causes. Among the secondary outcomes were incidences of myocardial infarction (MI), target lesion revascularization (TLR), target vessel revascularization (TVR), stent thrombosis, stroke, and major adverse cardiovascular events (MACEs). In terms of the primary outcomes, the combined analysis revealed a marginally lower risk of all-cause mortality (relative risk, RR (95% CI) = 0.92 (0.85, 1.00), p = 0.05, I2 = 0%) with the use of PF-DES versus PC-DES. Nonetheless, there was no significant difference in cardiovascular mortality (RR (95% CI) = 0.97 (0.87, 1.08)) or non-cardiovascular mortality (RR (95% CI) = 0.87 (0.69, 1.10), p = 0.25, I2 = 9%) between the groups. Furthermore, univariate meta-regression revealed that male gender and prior myocardial infarction were independently associated with an increased risk of all-cause mortality and cardiovascular disease. According to the current meta-analysis, no statistically significant differences existed in PF-DES and PC-DES outcomes. More extensive research is needed to investigate these findings further and establish their validity.
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Affiliation(s)
- Mahima Khatri
- Medicine and Surgery, Dow University of Health Sciences, Karachi, PAK
| | - Satesh Kumar
- Medicine and Surgery, Shaheed Mohtarma Benazir Bhutto Medical College, Karachi, PAK
| | - Kamran Mahfooz
- Internal Medicine, New York Health and Hospital Corporation, Lincoln Medical Center, New York, USA
| | - Fnu Sugandh
- Medicine, Ghulam Muhammad Mahar Medical College, Sukkur, PAK
- Medicine, Civil Hospital Karachi, Sukkur, PAK
| | - Deepak Dembra
- Medicine, Ghulam Muhammad Mahar Medical College, Sukkur, PAK
| | - Fnu Mehak
- Surgery, Ghulam Muhammad Mahar Medical College, Sukkur, PAK
| | | | - Hamza Islam
- Research, Punjab Medical College, Faisalabad, PAK
| | - Rabia Islam
- Research, Faisalabad Medical University, Faisalabad, PAK
| | | | - Tirath Patel
- Surgery, American University of Antigua, St. John, ATG
| | - Ajay Kumar
- Internal Medicine, MedStar Union Memorial Hospital, Baltimore, USA
| | - Nomesh Kumar
- Surgery, Detroit Medical Center-Wayne State University of Sinai Grace, Michigan, USA
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Mori M, Sakamoto A, Sato Y, Kawakami R, Kawai K, Cornelissen A, Abebe B, Ghosh S, Romero ME, Kolodgie FD, Virmani R, Finn AV. Overcoming challenges in refining the current generation of coronary stents. Expert Rev Cardiovasc Ther 2021; 19:1013-1028. [PMID: 34860134 DOI: 10.1080/14779072.2021.2013810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Late stent thrombosis caused by delayed vascular healing and prolonged local inflammation were major drawbacks of 1st generation drug-eluting stents (DES). Strut design, biocompatibility of polymer, and drug-release profiles were improved in 2nd and 3rdgeneration DES. Accordingly, the indications for percutaneous coronary intervention with DES have been expanded to more complex patients and lesions. Despite these improvements, significant barriers such as greater flexibility in the duration of dual-antiplatelet therapy (DAPT) as well as reducing long-term stent-related events remain. To achieve ideal short- and long-term results, these existing limitations need to be overcome. AREAS COVERED We will discuss the current limitations of coronary DES and how they might be overcome from pathological and clinical viewpoints. EXPERT OPINION Optimizing DAPT duration after stent implantation and prevention of in-stent neoatherosclerosis are two major issues in current DES. Overcoming these drawbacks is a prerequisite toward achieving better short- and long-term clinical outcomes. New technologies including platform design, polymer types, and anti-proliferative agent itself might lead to further improvements. Although the initial experience with bioresorbable scaffold/stents (BRS) was disappointing, positive results of clinical studies regarding novel BRS are raising expectations. Overall, further device innovation is desired for overcoming the limitations of current DES.
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Affiliation(s)
| | | | - Yu Sato
- CVPath Institute, Inc, Gaithersburg, MD, USA
| | | | - Kenji Kawai
- CVPath Institute, Inc, Gaithersburg, MD, USA
| | | | | | | | | | | | | | - Aloke V Finn
- CVPath Institute, Inc, Gaithersburg, MD, USA.,School of Medicine, University of Maryland, Baltimore, Md, USA
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