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Omotoye S, Singleton MJ, Zagrodzky J, Clark B, Sharma D, Metzl MD, Gallagher MM, Meininghaus DG, Leung L, Garg J, Warrier N, Panico A, Tamirisa K, Sanchez J, Mickelsen S, Sardana M, Shah D, Athill C, Hayat J, Silva R, Clark AT, Gray M, Levi B, Kulstad E, Girouard S, Zagrodzky W, Montoya MM, Bustamante TG, Berjano E, González-Suárez A, Daniels J. Mechanisms of action behind the protective effects of proactive esophageal cooling during radiofrequency catheter ablation in the left atrium. Heart Rhythm O2 2024; 5:403-416. [PMID: 38984358 PMCID: PMC11228283 DOI: 10.1016/j.hroo.2024.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024] Open
Abstract
Proactive esophageal cooling for the purpose of reducing the likelihood of ablation-related esophageal injury resulting from radiofrequency (RF) cardiac ablation procedures is increasingly being used and has been Food and Drug Administration cleared as a protective strategy during left atrial RF ablation for the treatment of atrial fibrillation. In this review, we examine the evidence supporting the use of proactive esophageal cooling and the potential mechanisms of action that reduce the likelihood of atrioesophageal fistula (AEF) formation. Although the pathophysiology behind AEF formation after thermal injury from RF ablation is not well studied, a robust literature on fistula formation in other conditions (eg, Crohn disease, cancer, and trauma) exists and the relationship to AEF formation is investigated in this review. Likewise, we examine the abundant data in the surgical literature on burn and thermal injury progression as well as the acute and chronic mitigating effects of cooling. We discuss the relationship of these data and maladaptive healing mechanisms to the well-recognized postablation pathophysiological effects after RF ablation. Finally, we review additional important considerations such as patient selection, clinical workflow, and implementation strategies for proactive esophageal cooling.
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Affiliation(s)
| | | | - Jason Zagrodzky
- St. David’s Medical Center, Texas Cardiac Arrhythmia Institute, Austin, Texas
| | | | | | - Mark D. Metzl
- NorthShore University Health System, Evanston, Illinois
| | - Mark M. Gallagher
- St George’s University Hospitals NHS Foundation Trust, London, United Kingdom
| | | | - Lisa Leung
- St George’s University Hospitals NHS Foundation Trust, London, United Kingdom
| | - Jalaj Garg
- Loma Linda University Medical Center, Loma Linda, California
| | - Nikhil Warrier
- MemorialCare Heart & Vascular Institute, Fountain Valley, California
| | | | - Kamala Tamirisa
- Cardiac Electrophysiology, Texas Cardiac Arrhythmia Institute, Dallas, Texas
| | - Javier Sanchez
- Cardiac Electrophysiology, Texas Cardiac Arrhythmia Institute, Dallas, Texas
| | | | | | - Dipak Shah
- Ascension Providence Hospital, Detroit, Michigan
| | | | - Jamal Hayat
- Department of Gastroenterology, St George’s University Hospital, London, United Kingdom
| | - Rogelio Silva
- Department of Medicine, Division of Gastroenterology, University of Illinois at Chicago, Chicago, Illinois
- Advocate Aurora Christ Medical Center, Chicago, Illinois
| | - Audra T. Clark
- University of Texas Southwestern Medical Center, Dallas, Texas
| | | | - Benjamin Levi
- University of Texas Southwestern Medical Center, Dallas, Texas
| | - Erik Kulstad
- University of Texas Southwestern Medical Center, Dallas, Texas
| | | | | | | | | | - Enrique Berjano
- Department of Electronic Engineering, Universitat Politècnica de València, Valencia, Spain
| | - Ana González-Suárez
- Translational Medical Device Lab, School of Medicine, University of Galway, Galway, Ireland
- Valencian International University, Valencia, Spain
| | - James Daniels
- University of Texas Southwestern Medical Center, Dallas, Texas
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Feng L, Wei Y, Sun Y, Zhou L, Bi S, Chen W, Xiang W. MIR34A modulates lens epithelial cell apoptosis and cataract development via the HK1/caspase 3 signaling pathway. Aging (Albany NY) 2023; 15:6331-6345. [PMID: 37414399 PMCID: PMC10373963 DOI: 10.18632/aging.204854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/15/2023] [Indexed: 07/08/2023]
Abstract
Cataracts are the leading cause of blindness in the world. Age is a major risk factor for cataracts, and with increasing aging, the burden of cataracts will grow, but the exact details of cataractogenesis remain unclear. A recent study showed that microRNA-34a (MIR34A) is involved in the development of cataracts, but the underlying pathogenesis remains obscure. Here, our results of microRNA target prediction showed that hexokinase 1 (HK1) is one of the genes targeted by MIR34A. Based on this finding, we focused on the function of MIR34A and HK1 in the progress of cataracts, whereby the human lens epithelial cell line SRA01/04 and mouse lens were treated with MIR34A mimics and HK1 siRNA. We found that HK1 mRNA is a direct target of MIR34A, whereby the high expression of MIR34A in the cataract lens suppresses the expression of HK1. In vitro, the upregulation of MIR34A together with the downregulation of HK1 inhibits the proliferation, induces the apoptosis of SRA01/04 cells, and accelerates the opacification of mouse lenses via the HK1/caspase 3 signaling pathway. In summary, our study demonstrates that MIR34A modulates lens epithelial cell (LEC) apoptosis and cataract development through the HK1/caspase 3 signaling pathway.
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Affiliation(s)
- Lujia Feng
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, China
| | - Yantao Wei
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Yimeng Sun
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Linbin Zhou
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Shaowei Bi
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Weirong Chen
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Wu Xiang
- State Key Laboratory of Ophthalmology; Zhongshan Ophthalmic Center, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science; Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
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Cooper J, Joseph C, Zagrodzky J, Woods C, Metzl M, Turer RW, McDonald SA, Kulstad E, Daniels J. Active esophageal cooling during radiofrequency ablation of the left atrium: data review and update. Expert Rev Med Devices 2022; 19:949-957. [PMID: 36413154 PMCID: PMC9839561 DOI: 10.1080/17434440.2022.2150930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Radiofrequency (RF) ablation of the left atrium of the heart is increasingly used to treat atrial fibrillation (AF). Unfortunately, inadvertent thermal injury to the esophagus can occur during this procedure, potentially creating an atrioesophageal fistula (AEF) which is 80% fatal. The ensoETM (Attune Medical, Chicago, IL), is an esophageal cooling device that has been shown to reduce thermal injury to the esophagus during RF ablation. AREAS COVERED This review summarizes growing evidence related to active esophageal cooling during RF ablation for the treatment of AF. The review presents data demonstrating improved outcomes related to patient safety and procedural efficiency and suggests directions for future research. EXPERT OPINION The use of active esophageal cooling during RF ablation reduces esophageal injury, reduces or eliminates fluoroscopy requirements, reduces procedure duration and post-operative pain, and increases long-term freedom from arrhythmia. These effects in turn increase patient same-day discharge rates, decrease operator cognitive load, and reduce cost. These findings are likely to further accelerate the adoption of active esophageal cooling.
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Affiliation(s)
- Julie Cooper
- University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | - Jason Zagrodzky
- Texas Cardiac Arrhythmia Institute, St. David’s South Austin Medical Center, Austin, TX 78704
| | | | - Mark Metzl
- NorthShore University Health System, 2650 Ridge Avenue, Evanston, IL 60201
| | - Robert W. Turer
- University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | - Erik Kulstad
- University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - James Daniels
- University of Texas Southwestern Medical Center, Dallas, TX 75390
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Developing a Measure to Quantify Ocular Pain Postoperatively: The Adaptation of the Ocular Pain Assessment Survey. J Ophthalmol 2022; 2022:3116913. [PMID: 36276918 PMCID: PMC9586810 DOI: 10.1155/2022/3116913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Purpose Since quantification and communication of ocular pain is important for a healthier patient follow-up and postoperative guidance, reliable measures like the Ophthalmic Pain Assessment Survey (OPAS) are needed to assess the outcome and management of different operations. To address that need, we carried out the adaptation of OPAS into Turkish to reach different age groups and backgrounds, widening the use of OPAS on patients who underwent an ophthalmic operation. Methods We used back-translation method and achieved cultural adaptation through content validity scoring by 5 independent ophthalmologists. The survey is then administered three times: preoperatively, postoperatively within 24 hours, and finally a week later in the follow-up visit. Validity is measured in comparison to Visual Analog Scale using Spearman's correlation coefficient and reliability is measured using Cronbach's alpha. Factor analysis is performed by principal component analysis and rotation is performed using Varimax method when necessary. Results We reached a total of 132 patients with a mean age of 64.2 years. Most of them underwent phacoemulsification (n = 83), followed by PRK (n = 37). Overall, the T-OPAS demonstrated good reliability (mean C. alpha: 0.830) and its correlation with the VAS was especially high (S. coeff. >0.5) in the first three sections in all three surveys. Factor analysis yielded 5 subscales, allowing us to shape the final form of T-OPAS. Conclusion Through this adaptation of OPAS into a foreign language, we present a reliable and valid tool for postoperative pain quantification, allowing objective measurement of pain in different populations such as the elderly.
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Mtanes K, Mimouni M, Sommer AC, Blumenthal EZ. "Stop & drop"- a modified "stop & chop" phacoemulsification technique for cataract surgery. Eur J Ophthalmol 2022; 32:3110-3112. [PMID: 35266831 DOI: 10.1177/11206721221087557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To introduce a novel technique termed "stop and drop" for creating the first crack in the initial hemi-nucleus, eliminating the need to slip a chopper under the anterior capsular rim during horizontal chopping, hence lowering the risk of capsular or zonular damage. METHODS Placing a blunt chopper tip on the upper surface of the hemisection proximal to the capsular edge and pressing it downward to initiate a crack in a pinching manoeuvre. Once a crack has formed, the chopper can slide to the side, widening the crack and assisting the phaco needle to pull out the first fragment. RESULTS The technique was used in over 100 cases of cataracts successfully. No radial tear, posterior capsule rupture or zonulolysis occurred. CONCLUSIONS "Stop and drop" is an effective and safe technique for performing phacoemulsification. It is not suitable for soft nuclei where the chopper will likely "cheese-wire" through the nuclear material.
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Affiliation(s)
- Kamal Mtanes
- Department of Ophthalmology, 58878Rambam Health Care Campus, Haifa, Israel
| | - Michael Mimouni
- Department of Ophthalmology, 58878Rambam Health Care Campus, Haifa, Israel.,Ruth and Bruce Rappaport Faculty of Medicine, Technion- Israel Institute of Technology, Haifa, Israel
| | - Adir C Sommer
- Department of Ophthalmology, 58878Rambam Health Care Campus, Haifa, Israel
| | - Eytan Z Blumenthal
- Department of Ophthalmology, 58878Rambam Health Care Campus, Haifa, Israel.,Ruth and Bruce Rappaport Faculty of Medicine, Technion- Israel Institute of Technology, Haifa, Israel
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Tips, Tricks, and Guides in Descemet Membrane Endothelial Keratoplasty Learning Curve. J Ophthalmol 2021; 2021:1819454. [PMID: 34447591 PMCID: PMC8384540 DOI: 10.1155/2021/1819454] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/03/2021] [Indexed: 12/13/2022] Open
Abstract
Lamellar keratoplasty is fast becoming the most popular form of corneal transplantation. The adoption of Descemet membrane endothelial keratoplasty (DMEK) in the management of Fuchs endothelial dystrophy and pseudophakic bullous keratopathy is partly responsible for this shift in the paradigm of management of corneal pathology. The learning curve of DMEK, however, has been proven to be much steeper than previous endothelial keratoplasty procedures. To ease the procedure, experts have proposed multiple innovative techniques from tissue preparation to graft unfolding to aid the more novice surgeon. Here, we collate and share tips and tricks from our collective experiences to support the learning curve and outcomes in DMEK for both the novice and more experienced corneal transplant surgeons.
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Meduri A, Oliverio GW, Bergandi L, De Salvo G, Frisina R, Mazzotta C, Aragona P. Role of Cold Balanced Salt Solution (BSS) in the Prophylaxis of Cystoid Macular Edema After Cataract Surgery: A Prospective Randomized Study. Clin Ophthalmol 2021; 15:2519-2526. [PMID: 34168425 PMCID: PMC8216722 DOI: 10.2147/opth.s304146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/18/2021] [Indexed: 12/29/2022] Open
Abstract
Purpose To evaluate the postoperative effect on central retinal macular thickness of a cooled irrigating eye solution used during cataract surgery. Patients and Methods In this prospective, single-center study, 100 eyes of 50 patients (26 males and 24 females) were evaluated with spectral domain optical coherence tomography (SD-OCT) before and after phacoemulsification for senile cataract. Eyes were randomly divided into two groups based on the irrigating solution used during surgery: Group 1, 50 eyes received intraoperative irrigating solution at room temperature (~20.0±0.1°C); and Group 2, 50 fellow eyes received cold intraoperative irrigating solution (2.7±0.1°C). Changes in central macular thickness (CMT) were evaluated in both groups by SD-OCT macular raster scan for the nine Early Treatment of Diabetic Retinopathy Study (ETDRS) subfields and total macular volume, performed pre-surgery, and 1 and 4 weeks post-surgery. Results Despite there being no significant differences in variables between the two groups preoperatively, significant increases in CMT were observed at 1 week after surgery in both groups (p=0.02 and p=0.03, respectively), as well as in total macular volume (p<0.0001 and p=0.02, respectively). Inter-subgroup analysis showed a significant reduction in CMT (p=0.03) and total macular volume (p=0.001) at 1 week post-surgery in Group 2 compared to Group 1, whereas no significant differences were observed at 4 weeks. Conclusion The use of a cooled irrigating eye solution during phacoemulsification may be beneficial in preventing the possible development of postoperative macular thickening. Further clinical studies may support this finding.
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Affiliation(s)
- Alessandro Meduri
- Biomedical, Dental and Morphological and Functional Images Sciences Department, University of Messina, Messina, Italy
| | - Giovanni William Oliverio
- Biomedical, Dental and Morphological and Functional Images Sciences Department, University of Messina, Messina, Italy
| | | | - Gabriella De Salvo
- Eye Unit, University Hospital Southampton Foundation Trust, Southampton, UK
| | - Rino Frisina
- Department of Neurosciences - Ophthalmology, University of Padova, Padua, Italy
| | - Cosimo Mazzotta
- Departmental Ophthalmology Unit, Alta Val d'Elsa Hospital, Siena, Italy.,Siena Crosslinking Center, Siena, Italy
| | - Pasquale Aragona
- Biomedical, Dental and Morphological and Functional Images Sciences Department, University of Messina, Messina, Italy
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