Disclaimer. Shellock R & D Services, Inc. email: Frank.ShellockREMOVE@MRIsafety.com. Three late transient cerebrovascular ischemic accidents occurred at 3, 4, and 6 years, respectively. The Medtronic Open Pivot AP360, AP, and Standard valves provide exceptional implantability, performance, and durability.1-3, Medtronic Open Pivot mechanical heart valves represent a fundamental change in bileaflet valve design. Multimodality Imaging Assessment of Prosthetic Heart Valves. x]]6r}`D#sIJ==>X~$k=f}.>$VNL,n}~+*+V0O4+? z6s_ !faph n&RZS~v9'URlEtlH {S']$:I&L[z8! Fifteen years of experience with ATS mechanical heart valve prostheses. Epub 2019 Aug 5. Results vary from person to person. J Am Soc Echocardiogr. Bookshelf 2010 Jul;19(4):473-84. %PDF-1.3 Handle the valve only with accessories provided by the manufacturer specifically for the Carbomedics valve . The paper refers to the safety of MRI in patients with prosthetic heart valves or coronary stents. ATS Medical, Inc. Pre-market Approval Application Summary of Safety and Effectiveness: 2000. All replacement heart valves are completely safe with x-ray exams. Cardiovascular how jeep positions itself into the market? Eur J Cardio-thorac Surg. Unlike other bileaflet valves, which use cavity pivots, the Medtronic Open Pivotaortic valved graft (AVG) has no recesses or cavities in the pivot area where thrombogenesis can occur.1,2This allows for continuous passive washing and gentle treatment of blood cells, resulting in low levels of hemolysis and thromboembolic events.1,3, In-vivo studies demonstrate excellent hemodynamics.3-5. The purpose of this retrospective study is to analyze the rate of midterm thromboembolic events and other valve-related complications when the ATS Open Pivot valve is implanted in the mitral position. Eat a low-salt diet if your doctor prescribes one for you. PMC All SJM heart valves and annuloplasty rings are MRI safe (3- Tesla or less). What are the differences between mechanical valves and tissue valves? Home Previous reports have focused on the low rate of thromboembolic complications in the aortic position. This site is Exclusively Sponsored by BRACCO, Patent Ductus Arteriosus (PDA), Atrial Septal Defect (ASD), Ventricular Septal Defect (VSD) Occluders, and Patent Foramen Ovale Closure Devices, Orthopedic Implants, Materials, and Devices, Neurostimulation (Neuromodulation) Systems: General Information, Ocular Implants, Lens Implants, and Devices. Hirt SW, Aoki M, Demertzis S, Siclari F, Haverich A, Borst HG. 21, D-47137, Duisburg, Germany, 511 So Lucerne Blvd, Los Angeles, CA, 90020, USA, Cardiac Surgical Associates P.A., 920 East 28th Street, # 420, Minneapolis, MN, 55407, USA, 1998 Dr. Dietrich Steikopff Verlag GmbH & Co. KG, Darmstadt, Parravicini, R. et al. 26 ATS Medical Open Pivot Bileaet Aortic 501DA18 18 Pyrolytic carbon Teon ATS Medical Inc., Minneapolis, MN 27 SJM Reagent Valve Bileaet Aortic 25AGN-751-IDE 25 Polyester Mechanical Heart Valve St. Jude Medical Inc., St. Paul, MN 28 St. Jude Medical Mechanical Heart valve Bileaet Aortic 25AJ-501 25 Polyester St. Jude Medical Inc . 4 0 obj x[7} */ qY"zfz!'Rklo"d'Ddx~J/Vw\nJZ[%Ei]v'Z.V#p`m4$7oca$`J_^:,yZp3c!}33@-+7CV From January 1, 1997 through June 30, 2000, 224 patients underwent valve replacement with the ATS Medical cardiac valve prosthesis under a USFDA-approved investigational device exemption study. Find important safety information about the Medtronic transcatheter aortic valve and TAVR procedure. This is a preview of subscription content, access via your institution. The https:// ensures that you are connecting to the J Thorac Cardiovasc Surg. Conclusions: 2001 Sep;10(5):628-35. Ann Thorac Surg. Convenient accessories include nine white-handled, single-endedstandard heart valve sizers. A three-dimensional analysis of flow in the pivot regions of an ATS bileaflet valve. On the basis of available evidence to date, all patients with prosthetic heart valves or coronary stents can safely undergo MRI at 1.5 T and the vast majority at 3 T. Keywords: It is possible that some of the products on the other site are not approved in your region or country. %PDF-1.5 % Heart Valves and Annuloplasty Rings More. Circ Cardiovasc Imaging. The initial experience with the ATS Medical mechanical cardiac valve prosthesis. -utZFF-[YrhRdyZO+*__UU[jUM8oi= This site needs JavaScript to work properly. Results: It's important that you follow your doctor's specific instructions and take your medication exactly as instructed. Hemashieldis a registered trademark of MAQUET Cardiovascular, LLC. A three-dimensional analysis of flow in the pivot regions of an ATS bileaflet valve. Recovery time depends on many different things, including your overall physical condition before surgery. The main advantage of a tissue valve is that it does not typically require life-long blood-thinning medication. 3 It should be noted that the forces exerted on prosthetic valves and coronary stents are less than Would you like email updates of new search results? official website and that any information you provide is encrypted Careers. Methods: Healthcare Professionals Echocardiographic gradients were proportional to valve size and did not significantly change over the follow-up period. heart valve ATS Medical Minneapolis, M. 1.5: Conditional 5 More. The site is secure. The .gov means its official. Emery RW, Petersen RJ, Kersten TE, et al. Medtronic open pivot mechanical valves offer exceptional performance: The Open Pivot AP360 provides these additional features: The Open Pivot AP provides these additional features: The Open Pivot Standard Aortic Valve provides these additional features: The Open Pivot Standard Mitral Valve provides these additional features: A variety of accessories are available to quickly and easily select the optimal valve type, appropriate valve size, and ideal placement for valve positioning. 2003;75(2):444-452. The initial experience with the ATS Medical mechanical cardiac valve prosthesis. Cardiac computed tomography (CT) and magnetic resonance imaging (MRI) have emerged as new potential imaging modalities for valve prostheses. Emery RW, Krogh CC, Jones DJ, et al. Clipboard, Search History, and several other advanced features are temporarily unavailable. The ATS Medical Open Pivot mechanical heart valve was introduced in 1992. 2022 Jul-Sep;25(3):254-263. doi: 10.4103/aca.aca_109_21. These keywords were added by machine and not by the authors. Treatments & Therapies It is also known as the ATS Open Pivot Bi-leaflet Heart Valve. Five early neurologic complications occurred: 3 transient cerebrovascular accidents and 2 strokes. Between June 1992 and June 2002, 177 patients (63 male and 114 female; mean age 57.5 years) underwent mitral replacement with an ATS Open Pivot mechanical heart valve. The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). The .gov means its official. Follow your doctor's suggestions about incorporating exercise and other activities into your life. November 1999;22(11):754-763. Bethesda, MD 20894, Web Policies Ozeren M, DoGan OV, Dolgun A, Koyildirim E, Karapinar K, Ycel E. J Heart Valve Dis. Your Medtronic heart valve products should not activate airport security alarms, depending on the sensitivity of the security system settings. FOIA Healthcare Professionals mVa04iv2Y Medtronic Operational Headquarters 710 Medtronic Parkway Minneapolis, MN 55432-5640 USA, Central/Eastern Europe, Middle East & Africa, Electromagnetic Compatibility Guide for Cardiac Devices, Surgical Heart Valve Repair and Replacement. Typically, recovery takes at least eight weeks and up to 12 weeks. Can I have an x-ray after heart valve replacement? Mechanical Heart Valve Size 27 mm 27AGN-751 Rotatable Aortic . AP series valves are sized in even mm ranges for implant purposes. Emery RW, Krogh CC, Jones DJ, Nicoloff DM, Blake DP, Arom KV. U.S. Food & Drug Administration. Background: The ATS Medical Open Pivot mechanical heart valve was introduced in 1992. Our operative mortality rate for the study period was 2.2%. A good cardiac rehabilitation program helps you regain your energy and overall good health. The mechanical heart valves are contraindicated or difficult to apply in patients unable to . sVUe:p+eeU6UfBdqC_5\a(#?n`pj4UpV_E+J1q!b$` You and your doctor together will decide which option is best for you. September 1993;106(3):427-433. Before Baykut D, Grize L, Schindler C, Keil AS, Bernet F, Zerkowski HR. 8600 Rockville Pike National Library of Medicine ATS prosthetic valves AP series: echocardiographic evaluation. Heart Surgery Forum. %PDF-1.4 % Advancing the Technology of Bileaflet Mechanical Heart Valves, https://doi.org/10.1007/978-3-642-93691-3_12, Tax calculation will be finalised during checkout. Easy Implantability With no tapers or pleats, the Medtronic Open Pivot Aortic Valved Graft allows for easy anastomosis anywhere on the graft. Before The ATS Open Pivot Heart Valve was first sold in international markets in 1992, and subsequently granted FDA clearance to sell in the United States in 2000. Is it safe to have a magnetic resonance imaging (MRI) scan after heart valve replacement? This medication helps prevent the formation of blood clots, which are a serious health risk. Department of Cardiac Surgery, Clinica SALUS, Reggio Emilia, Italy, L. Reggianini,F. Cocconcelli,N. Asgharnejad Fahim,G. Cerioli,M. E. Amorth,G. Zobbi,G. P. Belloni&M. Tonelli, Casa di cura policlinica, Salus SpA, Via U. Levi, 7, 42100, Reggio Emilia, Italy, Marco Barchetti MD (c/o Prof. Roberto Parravicini), You can also search for this author in Bethesda, MD 20894, Web Policies This site needs JavaScript to work properly. 2003 Feb;75(2):444-52. doi: 10.1016/s0003-4975(02)04537-x. 8$ESTd8]c"[ 6K.mKI05gveIUQ&,Rf|TZO"\ |3 Heart Valves Surgical National Library of Medicine The AP series expands applications for the small aortic root or other situations where hemodynamics are critical. INDICATION FOR USE The SJM Regent Mechanical Heart Valve is intended for use as a replacement valve in patients with a diseased, damaged, or malfunctioning aortic valve. gdYySvn/2K8]NQ=H#o}Eix. Cocchia R, Chianese S, Lombardi G, Romano L, Capone V, Amitrano L, Bennato R, Ranieri B, Russo G, Mauro C, Bossone E. Clin Pract. Unable to load your collection due to an error, Unable to load your delegates due to an error. Eleven-year single-center experience with the ATS Open Pivot Bileaflet heart valve. Emery RW, Van Nooten GJ, Tesar PJ. Etched into both leaflets is "DEMO/031". Severe Stenosis of Mitral Bioprosthetic Valve Thrombosis in a Patient with HCV-Related Cirrhosis and Duodenal Variceal Bleeding: The Deadly Triad. Available at: www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpma/pma.cfm?id=P990046. (1998). MeSH Preoperatively, 17 patients (10%) were in New York Heart Association functional class II, 117 patients (66%) in class III, and 43 patients (24%) in class IV. Important Safety Information - Transcatheter Aortic Valve Replacement (TAVR) | Medtronic Your browser is out of date With an updated browser, you will have a better Medtronic website experience. FOIA 2004 Mar;13(2):231-238. Bookshelf Arch Mal Coeur Vaiss. Eur J Cardiothorac Surg. Training, education, and collaboration on the treatment of mitral and tricuspid valve disease. The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Int J Artif Organs. March 1993;17(3):538-545. government site. Background: These improvements led to low thromboembolic rates of 1.25% per patient year and encouraged a reduction in anticoagulation treatment to an INR of 1.5 to 2.5 in isolated aortic valve replacement cases [ 179 ]. David TE, Ivanov J, Armstrong S, Feindel CM, Cohen G. Late results of heart valve replacement with the Hancock II bioprosthesis. The initial United States experience with the ATS mechanical cardiac valve prosthesis. Etiologies included degenerative disease (56%), rheumatic disease (38%), and endocarditis (6%). 2018 Apr;31(4):475-490. doi: 10.1016/j.echo.2018.01.011. Object Category Heart Valves and Annuloplasty Rings. J Vasc Surg. [The best of valvular heart disease in 2006]. The Hemashield*Woven Double Velour graftis made with a low-porosity graft material to improve hemostasis.6,7Excellent resorption rates facilitate healing.6The graft material also offers exceptional handling characteristics. Ozeren M, DoGan OV, Dolgun A, Koyildirim E, Karapinar K, Ycel E. J Heart Valve Dis. From January 1, 1997 through June 30, 2000, 224 patients underwent valve replacement with the ATS Medical cardiac valve prosthesis under a USFDA-approved investigational device exemption study. Tell your doctor if you make any lifestyle changes. An official website of the United States government. Clipboard, Search History, and several other advanced features are temporarily unavailable. Home Rv>dBf?}bTCJsq[C*~7bPM. 2021 Oct 15;11(10):1912. doi: 10.3390/diagnostics11101912. Bernet FH, Baykut D, Grize L, Zerkowski HR. Ann Thorac Surg. Unauthorized use of these marks is strictly prohibited. FOIA Multi-institutional experience of the ATS Open Pivot bileaflet valve in Japan. In this article, we present the results of 15 years of follow-up of patients who have undergone ATS heart valve replacement at our hospital. Five-year follow up of the ATS mechanical heart valve. Jamieson WR, Pelletier LC, Janusz MT, Chaitman BR, Tyers FO, Miyagishima RT. The survival for postoperative thromboembolic . Sezai A, Shiono M, Orime Y, et al. 3: . 18 0 obj << /Filter /FlateDecode /Length 19 0 R >> stream Aortic valve replacement (AVR) was conducted in 152 patients (39 with coronary bypass) and mitral replacement (MVR) in 72 patients (18 with coronary bypass). sharing sensitive information, make sure youre on a federal The goal of an artificially placed valve is to function like a native one in terms of hemodynamics and with minimal side . Percent follow-up was 90.4%. This is normal. Contact Medtronic LifeLine CardioVascular Technical Support for more detailed information. Five-year follow up of the ATS mechanical heart valve. An official website of the United States government. 1996;10(8):660-665. Biocor Valve Mitral Size 35-mm Model B10-35M heart valve St. Jude Medical, Inc., www.sjm.com Update my browser now. Many people experience relief from symptoms right away. hbbd``b`@q"w@1zb7A @'HX @Hp?g$jg2012lH{B ], @ _ endstream endobj startxref 0 %%EOF 99 0 obj <>stream p1`*&M33BP0+';~'ww.2c\b$1JM_@IQ B)&"-#i7Yw9I+aQlUhCF)}fs{OmknQ!9}:F-MrP[;su6$lph} 0f g)fSU$PP(\Ivf*DZ.g. Because anticoagulation medication helps prevent clots by delaying the blood coagulation process, any cuts or scrapes you get will bleed a little longer than normal. On the second postoperative day, 100 mg acetylsalicylic acid and oral acenocoumarol (Sintrom) was introduced to obtain a target INR of 2.0 to 3.0. LifeLine CardioVascular 2001;4(4):346-352. government site. The ATS Medical Open Pivot mitral valve demonstrates low rates of bleeding, thromboembolic, and other valve-related complications. Clinical results of the ATS prosthetic valve in 240 implants and review of the literature. Mechanical valves in some patients have lasted as long as 25 years without problems.1, Tissue valves in some patients have lasted as long as 15 years without problems.2. (eds) Advancing the Technology of Bileaflet Mechanical Heart Valves. 2007 Jan;100 Spec No 1:19-28. Westaby S, Van Nooten G, Sharif H, Pillai R, Caes F. Valve replacement with the ATS open pivot bileaflet prosthesis. HHS Vulnerability Disclosure, Help Heart Valves and Annuloplasty Rings More. The fact that tissue valves may not require life-long blood-thinning medication makes them ideal for women in their childbearing years, elderly patients, and patients who can't tolerate anticoagulation medication. It has a low profile bi-leaflet valve with a polyester sewing ring. Criteria previously used for safety assessment of heart valve prostheses and expressed in terms of magnetic forces suggest the forces observed in this study are compatible with the safe use of these valves in magnetic resonance (MR) systems with static fields up to 4.7 T. J. Magn. Operative morbidity was 15%. Would you like email updates of new search results? 1996(10):660-665. Anyone you share the following link with will be able to read this content: Sorry, a shareable link is not currently available for this article. Your use of the other site is subject to the terms of use and privacy statement on that site. Westaby S, Van Nooten G, Sharif H, Pillai R, Caes F. Valve replacement with the ATS open pivot bileaflet prosthesis. Chen CW, Fang YF, Tseng YH, Wong MY, Lin YH, Hsu YC, Lin BS, Huang YK. . 8600 Rockville Pike Disclaimer. Previous reports have focused on the low rate of thromboembolic complications in the aortic position. 2010 May;31(5):1075-80. doi: 10.1002/jmri.22163. Aortic dissection assessment by 4D phase-contrast MRI with hemodynamic parameters: the impact of stent type. Cardiovascular Kvitting JP, Dyverfeldt P, Sigfridsson A, Franzn S, Wigstrm L, Bolger AF, Ebbers T. J Magn Reson Imaging. In order to overcome the thrombogenicity of the St. Jude Medical valve, the ATS bilealfet open-pivot valve (ATS Medical, Minneapolis, MN) has been developed and introduced for clinical use. sharing sensitive information, make sure youre on a federal Jude Medical, Inc.www.sjm.com, AuraGen Cortical Surface Electrodes, Cortical Grid Electrodes, Cortical Strip Electrodes, Platinum Depth ElectrodesIntegra NeuroSciences, www.integralife.com. Emery RW, Krogh CC, McAdams S, Emery AM, Holter AR. You may need to take antibiotics before you have dental work or other surgery. We do not review or control the content on non-Medtronic sites, and we are not responsible for any business dealings or transactions you have there. Before and after Endovascular Aortic Repair in the Same Patients with Aortic Dissection: A Cohort Study of Four-Dimensional Phase-Contrast Magnetic Resonance Imaging. official website and that any information you provide is encrypted The purpose of this retrospective study is to analyze the rate of midterm thromboembolic events and other valve-related complications when the ATS Open Pivot valve is implanted in the mitral position. J Heart Valve Dis. Your doctor can provide more details. )wMt+T)ooVn,K >d_BPry6)5L>E^2AKYjz%Ae/^` W,(zuPd)kEJU{n {VX Your doctor might put you on blood thinning medication while you're healing. Products 2011 May;29(2):229-36. doi: 10.1016/j.ccl.2011.01.007. Ann Card Anaesth. Clipboard, Search History, and several other advanced features are temporarily unavailable. You just clicked a link to go to another website. Learn more on the transportation safety administration website. Each sizer handle has a clear cylindrical ring that approximates the patients tissue annulus size for appropriate valve selection. An official website of the United States government. ])Q Five-year follow up of the ATS mechanical heart valve. We present an overview of the possibilities and pitfalls of CT and MRI for PHV assessment based on a systematic literature review of all experimental and patient studies. For others, it may take longer to notice a change. Even a simple teeth cleaning can introduce bacteria into your bloodstream, which can find their way to your heart valve and cause an infection. Van Nooten GJ, Caes F, Francois K, et al. ]B&A]~i:QQD(X9&n({.:-B6JZTJ4S!`n,Jo;M'u)tGC{B@xxhC*^t(6 gJon8\d! If you continue, you may go to a site run by someone else. Aortic and Mitral Valve Replacement Open Pivot Standard Aortic Heart Valve The Open Pivot Standard Aortic Valve provides these additional features: Intra-annular valve with generous, compliant cuff for exceptional implantability Valve sizes ranging from 19 mm to 31 mm Open Pivot Standard Mitral Heart Valve The Open Pivot Standard Mitral Valve provides these additional features: By Posted when did harry styles dad passed away In mckayla adkins house How soon after surgery can I resume normal activity? Safety Topic / Subject Heart Valves and Annuloplasty Rings. Data represent 724 total patient-years. After that, he or she will look at your risk factors to see if you need to continue on the medication. This condition is commonly regarded as a contraindication for MRI, where patients with these stents or valves are excluded from yielding the diagnostic imaging information provided by one of the most important noninvasive imaging modalities. J Thorac Cardiovasc Surg. The aortic valve tissue. There are advantages and disadvantages with either choice. Role of Echocardiography in Transcatheter Mitral Valve Replacement in Native Mitral Valves and Mitral Rings. We performed ATS heart valve replacements on 231 patients between September 1993 and March 2008. Clinical results of the ATS prosthetic valve in 240 implants and review of the literature. Overall hospital mortality was 2.8% (5 patients). The carbon orifice used in the design corresponds to a standard valve three millimeters larger, hence a 22 mm AP aortic valve is the same in GOA as a 25 mm standard valve. With an updated browser, you will have a better Medtronic website experience. Be sure to tell your dentist or doctor you have a tissue heart valve. Shiono M, Sezai Y, Sezai A, et al. J Thorac Cardiovasc Surg. All mechanical valves make a little noise. Perioperative management of patients with prosthetic heart valves-A narrative review. Emery RW, Van Nooten GJ, Tesar PJ; Investigators for the ATS Clinical Open Pivot Heart Valve Food and Drug Administration Study. The AP series expands applications for the small aortic root or other situations where hemodynamics are critical. You may need to take antibiotics before you have dental work or other medical procedures done, just as you would if you received a mechanical valve. Ann Thorac Surg. In this paper we report our early clinical investigation data with special regard to the AP series. HHS Vulnerability Disclosure, Help Seventy-four patients (42%) were in chronic atrial fibrillation. When a mechanical heart valve opens and closes, you may hear two distinct clicking sounds. If I have a tissue heart valve implanted, will I need to take any medications after my surgery? << /Length 5 0 R /Filter /FlateDecode >> With an updated browser, you will have a better Medtronic website experience. Int J Artif Organs. Home 2001; 121:268-278. #b2(jJ4'>+J!K_=g 74G@qdCynoz>\jE|h0/1m2o~~rZpwMpfD :2>G,0`YZDS"9Q%ZjwD%cc20#nY.1B[tn.=oaaOz'c6C;:fuhA-Nca_xl ll {RPpp1cTme8]!ee,jcY=R e &%ekM mI 6qJS%g8o5j1 jI@=%Q$|$SL-[F$Pxc1b f&9_6V SL;8t7|l"nlsyh}c5M{hXnOCsh)U "}-n!98h5 /)yom (:3w \p? )/y+K&mFAyFdRHi(|#bbHPx\KXXgt3g4Bn2i5TCR}q ,m8+*4DMTh,/qtm?t>.&kv k.%y?` ghU:C;x9rXs3ayl[+0\rA)@5RzeQ9u\&YK x[h?-7{\ The MRI examination must be performed using the following parameters: 1.5-Tesla or 3-Tesla, only Whole body averaged specific absorption rate (SAR) of 2-W/kg, operating in the Normal Operating Mode for the MR system Maximum imaging time, 15 minutes per pulse sequence (multiple sequences per patient are allowed) ATS Medical Open Pivot Bileaflet Heart Valve Standard Aortic Model # XX denotes size 500FAxx ATS Medical Minneapolis, M. Strength 3. Technical Support. Heart Valves Surgical doi: 10.1161/CIRCIMAGING.115.003703. This newly developed valve has many outstanding features: open-pivot structure, wider orifice area, improved durability, reduced energy loss, and rotatable orifice. Provided by the Springer Nature SharedIt content-sharing initiative, Over 10 million scientific documents at your fingertips. Katircioglu F, Yamak B, Battaloglu B, Saritas A, Kiziltepe U, Kural T, Tasdemir O, Bayazit K. de Gevigney G; Groupe de travail sur les valvulopathies de la Societe francaise de cardiologi. Patient Booklet: Medtronic Surgical Valve Replacement, Electromagnetic Compatibility for Cardiac Devices, California Transparency in Supply Chains Act, Information About Proposition 65 for California Customers, Digital Millennium Copyright Act (DMCA) Notification. National Library of Medicine ATS Medical Open Pivot Valve: Mechanical bileaflet . 1984 Sep;88(3):324-33. Safety Topic / Subject Atriasept Closure Device Cardia, Inc. Eagan, MN . 2021 Feb;11(2):490-501. doi: 10.21037/qims-20-670. Update my browser now. {5J,gLH o6"P;=^1!CNjpj }dA93 Hp3#EDY$L(-]ET! Copyright 2023 by Shellock R & D Services, Inc. and Frank G. Shellock, Ph.D. All rights reserved. PDF View Shellock R & D Services, Inc. email: Frank.Shellock @MRIsafety . Complications, sometimes leading to repeated surgery or even death, may be associated with heart valve replacement. 1996; 2(1):51-58. MRI at 1.5 T is also safe for patients who carry old mechanical prostheses such as the Pre-6000 Starr-Edwards caged-ball prosthesis (available from 1960 to 1964), including assessment of the heart itself (cardiovascular magnetic resonance [CMR]). hb```f``A2@qLmSY_cE=PFkg lj Will a mechanical heart valve set off airport security? March 2004;13(2):231-238. The paper refers to the safety of MRI in patients with prosthetic heart valves or coronary stents. MeSH Westaby S, Parry A, Giannopoulos N, Pillai R. Replacement of the thoracic aorta with collagen-impregnated woven Dacron grafts.