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What causes mitral regurgitation? Mitral regurgitation (MR) is usually caused by conditions that have damaged the heart’s mitral valve or weakened the heart muscle. Common causes of MR in adults are:
How does mitral regurgitation develop? Mitral regurgitation (MR) is usually caused by conditions or incidents that weaken or damage the heart’s mitral valve. The most common causes of MR in adults are:
How common is mitral regurgitation? Chronic mitral regurgitation affects approximately 6% of women and 3% of men, but after 55 years of age, some degree of mitral regurgitation is found in almost 20% of men and women who undergo echocardiograms (also known as echo, and / or Doppler echocardiography) an ultrasound test that produces an image of the heart and its valve functions. What are the symptoms of mitral regurgitation? The symptoms for mitral regurgitation (MR) vary, depending on the severity of a person’s condition. Therefore, it is important to have regular health exams with your doctor, in order to assess and follow your condition. Some people may never develop symptoms of MR. Other people may develop an enlarged left ventricle, because it is working harder to pump blood out to the body. Patients with severe chronic MR may have symptoms of congestive heart failure such as:
What increases my risk of mitral regurgitation? There are several risk factors for mitral regurgitation (MR), which include:
When should I see a doctor?
If you believe you are experiencing symptoms (see Symptoms of Mitral Regurgitation), you should see your doctor immediately. How will my doctor diagnose mitral regurgitation? To diagnose MR, your doctor needs to make several assessments. First, s/he will need to determine whether the MR is chronic (present for a long time) or acute (sudden/recent development). Your doctor will need to assess its severity and check for any other complications or influencing conditions. To make these decisions, your doctor may:
Your doctor may also perform a physical exam: take your blood pressure, check your pulse, listen to your heart and lungs, and examine your feet and legs for signs of excess fluid. Finally, your doctor may order tests, to identify any abnormal heart function. These tests might include:
What is an echocardiogram? An echocardiogram (also known as ECG, and / or Doppler echocardiography) is an ultrasound test that produces an image of the heart and its valves. What other heart valve disease is there? The heart has four valves: the pulmonary valve, the aortic valve, the tricuspid valve, and the mitral valve. When functioning properly, the four heart valves ensure sure that blood always flows in a forward direction, without backward leakage. There are several types of heart valve disease: Valvular stenosis (narrowing of opening). This occurs when a heart valve opening is smaller than normal, due to stiff or fused leaflets (flaps). The narrowed opening causes the heart to work hard to pump blood through it. This increased exertion can lead to heart failure, or other heart problems. All four valve openings can become narrowed restricting blood flow). The conditions are called pulmonic stenosis, aortic stenosis, tricuspid stenosis and mitral stenosis. Valvular insufficiency. Also called regurgitation, incompetence or "leaky valve", this occurs when a valve does not close properly. If the valve does not seal, some blood will leak backwards across the valve. As the leak worsens, the heart has to work harder to make up for the leaky valve, and less blood may flow to the rest of the body. Depending on which valve is affected, the valvular insufficiency is called: pulmonary regurgitation, aortic regurgitation, tricuspid regurgitation or mitral regurgitation. How is mitral regurgitation treated? Medical Treatment There are no medications that are proven to effectively treat mitral regurgitation (MR), but there are medications that are used to treat its associated symptoms. For patients diagnosed with either Grade 1 (mild) or Grade 2 (moderate) MR, ongoing monitoring of their MR condition, along with treatment of its symptoms, may be sufficient. Drugs that are used to treat symptoms of MR include:
For symptomatic patients diagnosed with either Grade 3 (moderate to severe) or Grade 4 (severe) MR, surgery is generally recommended to repair or replace the mitral valve. The American College of Cardiology and the American Heart Association also recommend mitral valve surgery (repair or replacement), if the patient’s ejection fraction (the amount of blood pumped out of the left ventricle during each heartbeat) drops below 60%, or if the patients left ventricle is larger than 45 millimeters at rest even if you have no symptoms. Mitral valve repair or replacement requires hospitalization and involves open-heart surgery, which usually lasts several hours. A patient is placed under general anesthesia for the entire operation. The heart surgeon makes an incision into the patient’s chest. Blood is circulated through a heart-lung machine, which adds oxygen to the blood and maintains stable blood flow. The patient’s heart is stopped to facilitate the surgery. The mitral valve is either removed and replaced with a mechanical (artificial) heart valve or repaired. Mitral Valve Repair Mitral valve repair is usually preferable to mitral valve replacement. Mitral valve repair is accomplished using one or more of the following techniques:
Mitral Valve Replacement For patients with a hard, calcified annulus (mitral valve base) or widespread damage to the mitral valve and its surrounding tissue, replacement of the mitral valve is usually recommended. The damaged mitral valve is replaced with a mechanical (plastic or metal) valve, or a bio-prosthetic valve (either from a human cadaver, or from pig or cow tissue). The damaged mitral valve is removed and the new valve is sewn into place. Mechanical mitral valves have greater durability than tissue or bio-prosthetic valves, but patients who receive them must take anticoagulants (medications which thin the blood and reduce the likelihood of blood clotting) on a permanent basis. However, there are risks associated with anticoagulants, which include increased risk of bleeding, drop in level of blood cells, dizziness, headache, stroke, etc. Will I need any medication? See - How is mitral regurgitation treated? Patients who undergo mitral valve surgery will require medication. Often, antibiotics are prescribed, in order to minimize the risk of surgical infection. Usually in cases of mitral valve replacement, anticoagulants (blood-thinning drugs) are required, in order to reduce the risk of blood clotting and the potential for stroke (a rupture or obstruction of a blood vessel of the brain that can cause loss of consciousness, sensation, and voluntary motion). Will I need surgery? If patients are diagnosed with either Grade 3 (moderate to severe) or Grade 4 (severe) mitral regurgitation (MR), surgery may be required to repair or replace the mitral valve. Your physician will be able to recommend the appropriate treatment. Living with Mitral Regurgitation Can I exercise with mitral regurgitation? If diagnosed with mitral regurgitation, you should consult your doctor about safe health habits, including exercise and nutrition. Should I have special concerns about antibiotics? Many people use and benefit from taking antibiotics. However, in some cases, and with certain antibiotics, some people develop side effects or allergic reactions. To learn more about antibiotics, you should ask your doctor about which specific medications are prescribed to you, so that you can learn more about it. What are the risks associated with surgery for mitral regurgitation? Mitral valve repair or replacement requires hospitalization and involves open-heart surgery, which usually lasts several hours or more. A patient is placed under general anesthesia for the entire operation. The heart surgeon makes an incision into the patient’s chest. Blood is circulated through a heart-lung machine, which adds oxygen to the blood and maintains stable blood flow. The patient’s heart is stopped to facilitate the surgery. The mitral valve is either removed and replaced with a prosthetic (artificial) heart valve or repaired. Is mitral regurgitation fatal? If left untreated, mitral regurgitation (MR) can result in death, in some cases. If you believe you are experiencing symptoms (please refer to Causes and Symptoms of MR) of MR, you should consult your doctor. Where else can I learn about mitral regurgitation? Medline Plus http://www.nlm.nih.gov/medlineplus/ency/article/000176.htm Mayo Clinic.com http://www.mayoclinic.com/invoke.cfm?id=DS00421 Web MD http://my.webmd.com/hw/heart_disease/aa143445.asp http://my.webmd.com/hw/heart_disease/aa143456.asp CNN.com Health http://www.cnn.com/HEALTH/library/DS/00421.html Heart Center Online http://www.heartcenteronline.com/The_Heart_Valve_Center.html?WT.srch=1 Peace Health http://www.peacehealth.org/kbase/topic/special/aa143442/sec1.htm EVEREST II Clinical Trial What is a clinical trial? A clinical trial is a research study that tests new drugs, medical devices or other instruments, or medical procedure procedures or drugs on people. What is the EVEREST II clinical trial? Evalve was incorporated in 1999 to design, develop, manufacture and market innovative devices to enable percutaneous repair of cardiac valves. The company’s initial products are intended to reduce the risks, trauma and costs associated with current open, arrested heart surgical options. The company’s present development and clinical efforts are focused on mitral valve repair. Evalve, Inc. is sponsoring a Phase II IDE clinical trial, called EVEREST II (an acronym for Endovascular Valve Edge-to-Edge REpair STudy). The purpose of this clinical trial is to assess the safety and efficacy (or effectiveness) of the Evalve procedure in treating patients diagnosed with Grade 3 (moderate to severe) or Grade 4 (severe) mitral regurgitation MR, as compared to surgical repair of MR. Patients with Grade 3 or Grade 4 MR will be enrolled into the EVEREST II trial. To ensure that the results of the EVEREST II trial are unbiased, participants will be randomly assigned to either the Evalve procedure or to surgery, in a “two-to-one” ratio. This means that two out of 3 of trial participants will undergo the Evalve procedure and one out of 3 of participants will undergo mitral valve surgery. EVEREST II trial participants will be required to have a number of follow-up visits and evaluations including ultrasound studies over the course of a 24-month period, starting in early 2005. These follow up visits are intended to monitor the outcome of the procedure. Depending on the course of the study, the FDA (Food and Drug Administration) may also extend the follow-up period of this study for up to five years or longer. What are the objectives of the EVEREST II clinical trial? The purpose of the Evalve EVEREST II Phase II clinical trial is to assess the safety and effectiveness of the Evalve procedure in treating patients diagnosed with Grade 2 (moderate), Grade 3 (moderate to severe) or Grade 4 (severe) mitral regurgitation (MR), as compared to surgical repair of MR. Who is sponsoring the EVEREST II clinical trial? Evalve, Inc. is sponsoring a Phase II IDE clinical trial, called EVEREST II (an acronym for Endovascular Valve Edge-to-Edge REpair STudy). The purpose of this clinical trial is to assess the safety and efficacy (or effectiveness) of the Evalve procedure in treating patients diagnosed with Grade 3 (moderate to severe) or Grade 4 (severe) mitral regurgitation MR, as compared to surgical repair of MR. Evalve was incorporated in 1999 to design, develop, manufacture and market innovative devices, which enable the percutaneous repair of cardiac valves. The company’s initial products are intended to reduce the risks, trauma and costs associated with current open, arrested heart surgical options. The company’s present development and clinical efforts are focused on mitral valve repair. Which hospitals are participating in the EVEREST II clinical trial? The EVEREST II study will take place in several medical centers located throughout the Evanston Northwestern Healthcare 2650 Ridge Ave., Burch 300 Evanston, IL 6020 Ted Feldman, MD (EVEREST II CO-Principal Investigator) Interventional Cardiologist Beth Garnier, RN (Coordinator) Phone: (847) 570-1997 Email: egarnier@enh.org Hospital of the University of Pennsylvania 9 Founders Pavilion 3400 Spruce St. Philadelphia, PA 19104 Howard C. Herrmann, MD (Investigator) Director, Interventional Cardiology, Cardiac Cath Labs Phone: (215) 662-2180 Email: howard.herrmann@uphs.upenn.edu The Cleveland Clinic Foundation Dept.of Cardiovascular Medicine F25 9500 Euclid Avenue Cleveland, OH 44195 Patrick Whitlow, MD (Investigator) Interventional Cardiologist Kelly Brezina, RN (Coordinator) Phone: (216) 445-6820 Email: brezink@ccf.org Emory University 1364 Clifton Road NE, Suite F606 Atlanta, GA 30322 Ziyad Ghazzal, MD (Investigator) Interventional Cardiologist Pamela Hyde, RN (Coordinator) Phone: (404) 712-7665 Email: pamela.hyde@emoryhealthcare.org Swedish Medical Center 1st Hill Campus 747 Broadway Seattle, WA 98122-4307 Mark Reisman, MD (Investigator) Director, Cardiac Catheterization Laboratory Tracie Granger (Coordinator) Phone: (206) 215-2466 Email: tracie.granger@swedish.org Washington Hospital Center 110 Irving St., NW Washington, DC 20010 Kenneth Kent, MD (Investigator) Interventional Cardiologist Petros Okubagzi, MD (Coordinator) Phone: (202) 877-2146 Email: pokubagzi@gmail.com Columbia University Medical Center 177 Fort Washington Avenue New York, NY 10032 William Gray, MD (Investigator) Interventional Cardiologist Miriam Lucca-Susana (Coordinator) Phone: (212) 305-7061 Email: ml654@columbia.edu University of Texas Science Health Center Department of Medicine Cardiology, 7703 Floyd Curl Drive San Antonio, TX 78229 Steven R. Bailey, MD (Investigator) Interventional Cardiologist Joyce T. Holubec, RN (Coordinator) Phone: (210) 567-6553 Email: holubec@uthscsa.edu Shawnee Mission Medical Center 7301 E. Frontage Rd., Suite 200 Shawnee Mission, KS 66204 Paul Kramer, MD (Investigator) Interventional Cardiologist Nancy Hayek-Cobb, MS, RN, BSN, CCRA (Coordinator) Phone: (913) 676-8185 Email: nhayek-cobb@kcheart.com Carolina's Medical Center (Sanger Clinic) 1000 Blythe Blvd. Charlotte, NC 28203 Michael J. Rinaldi, MD (Investigator) Interventional Cardiologist Gale Schwarz, RN, CCRC (Coordinator) Phone: (704) 355-4797 Email: gale.schwarz@carolinashealthcare.org Duke University Medical Center Room 7324, Duke Hospital North, Erwin Road Durham, NC 27710 Andrew Wang, MD (Investigator) Associate Professor of Medicine Donald Glower, MD (EVEREST II Co-Principal Investigator) Cardiothoracic Surgeon Dana Glisson, RN (Coordinator) Phone: (919) 681-3810 Email: dana.glisson@duke.edu Brigham and Women's Hospital 1620 Tremont St. Boston, MA 02120 Andy Eisenhauer, MD (Investigator) Interventional Cardiologist Denise Cinamon, RN (Coordinator) Phone: 617-732-7831 Email: dcinamon@partners.org Memorial Hermann Hospital University of Texas Health Sciences Center at Houston 6431 Fannin, Ste. 1246 Houston, TX 77225 Richard Smalling, MD (Investigator) Interventional Cardiologist Mary Vooletich, RN (Coordinator) Phone: 713-500-6550 Email: mary.vooletich@uth.tmc.edu University of Colorado Health Sciences Center 4200 E. 9th Avenue, Campus Box B-132 Denver, CO 80262 John D. Carroll, MD, FACC (Investigator) Chief of Cardiology, UCH Director, Cardiac and Vascular Center University of Colorado Hospital Professor of Medicine, UCHSC Kathy Kioussopoulos, RN (Coordinator) Phone: (303) 372-6648 Email: kathy.kioussopoulos@uchsc.edu Nebraska Heart Institute 7440 S 91st Street Lincoln, NE 68526 Vishwajeth Bhoopalam, MD (Investigator) Interventional Cardiologist Amy Akins, RN (Coordinator) Phone: (402) 483-8619 Email: aakins@neheart.com St. Francis Hospital 100 Port Washington Blvd Roslyn, NY 11576 Andrew D. Berke, MD (Investigator) Interventional Cardiologist Aracey Norales, RN, ANP (Coordinator) Phone: (516) 562-6904 Email: aracely.norales@chsli.org Terrebonne General Medical Center 8120 Main Street, Suite 100 Houma, LA 70360 Peter S. Fail, MD (Investigator) Interventional Cardiologist Stacy Henry, RN (Coordinator) Phone: (985) 850-6301 Email:stacy.henry@tgmc.com The Care Group at The Heart Center 10590 N. Meridian, Suite 300 Indianapolis, IN 46260 James Hermiller, MD (Investigator) Director, Cardiac Catheterization Laboratory Anne Taylor, RN (Coordinator) Phone: (317) 583-6319 Email: ataylor@thecaregroup.com UCD Medical Center 2315 Stockton Blvd, Suite #6312 Sacramento, CA 95817 Reginald Low, MD (Investigator) Chief of Cardiovascular Medicine Jason Rogers, MD (Investigator) Interventional Cardiologist Kimberley Book, RN (Coordinator) Phone: (916) 734-5639 Email: kimberley.book@ucdmc.ucdavis.edu Cedars-Sinai Medical Center 8700 Beverly Blvd Los Angeles, CA 90048 Saibal Kar, MD (Investigator) Director of Interventional Cardiac Research Asma Hussaini, PA-C (Coordinator) Phone: (310) 423-2658 Email: hussainia@cshs.org Washington University Medical Center 660 S. Euclid Ave. Box 8086 St. Louis, MO 63110 John Lasala, MD, Phd (Investigator) Interventional Cardiologist Kim Striler, RN, MSN (Coordinator) Phone: (314) 747-4452 Email: kzuchows@im.wustl.edu University of Virginia UVA Cardiology, Box 800158 Charlottesville, Virginia 22908 Scott Lim, MD (Investigator) Interventional Cardiologist Linda Bailes, RN (Coordinator) Phone: (434) 982-1058 Email: lgs2m@virginia.edu Toronto General Hospital 200 Elizabeth St. 12en 236 Toronto, Ontario M5G 2C4 CANADA Leonard Schwartz, MD (Investigator) Interventional Cardiologist Eric Horlick, MD (Investigator) Interventional Cardiologist Rachael Ramsamujh, RN (Coordinator) Phone: (416) 340-4800 x6153 Email: rachael.ramsamujh@uhn.on.ca Banner Good Samaritan Hospital 1111 E. McDowell Rd., Ancillary II - Room 2022 Phoenix, AZ 85006 Tim Bryne, MD (Investigator) Interventional Cardiologist Pam Thompson, RN, BSN, CCRC (Coordinator) Phone: (602) 239-5678 Email: Pam.Thompson@bannerhealth.com St. Luke's Medical Center 2900 W. Oklahoma Avenue Milwaukee, WI 53215 Tanvir Bajwa, MD (Investigator) Interventional Cardiologist Ann Hintz, RN (Coordinator) Phone: (414) 385-2459 Email: ann.hintz@aurora.org Ochsner Clinic Foundation 1514 Jefferson Highway, 3E316 560 First Avenue New Orleans, LA 70121 Stephen R. Ramee, MD (Investigator) Interventional Cardiologist Barbara Hirstius, RN (Coordinator) Phone: (504) 842-4833 Email: bhirstius@ochsner.org New York University Medical Center NYU Medical Ctr. Cardiac Cath Lab, TCH 576 560 First Avenue New York, NY 10016 James Slater, MD (Investigator) Interventional Cardiologist Elise Weisman, RN (Coordinator) Phone: (212) 263-2188 Email: wilnee01@nyumc.org Baylor University Medical Center Baylor Heart and Vascular Institute 621 N. Hall Street, Suite H030 Dallas, TX 75226 Paul Grayburn, MD (Investigator) Interventional Cardiologist Susan Aston, RN (Coordinator) Phone: (214) 820-7358 Email: susanas@baylorhealth.edu St. Joseph Mercy Heart 5301 E. Huron River Drive Ypsilanti, MI 48197 Michael J. O'Donnell, MD (Investigator) Interventional Cardiologist Jennifer Piper, RN (Coordinator) Phone: (734) 712-7602 Email: jpiper@michiganheart.com New York Presbyterian Hospital The University Hospital of Columbia Cornell Cardiac Catheterization Laboratory New York Weill Cornell Center 525 East 68th Street, F-433/F-439 New York, NY 10021 S. Chiu Wong, MD (Investigator) Interventional Cardiologist Dolores T. Reynolds, RN, BSN (Coordinator) Phone: (212) 746-4617 Email: dtr2001@med.cornell.edu Adriano Vitale, RN (Coordinator) Phone: (212) 746-4620 Email: adv2003@med.cornell.edu Victoria Heart Institute Foundation 1900 Richmond Avenue, Suite 200 Victoria, BC V8R 4R2, Canada Eric Fretz, MD (Investigator) Interventional Cardiologist Liz Reimer, RN (Coordinator) Phone: (250) 595-1884 Email: ereimer@vhif.org Am I eligible for participating in the EVEREST II clinical trial? If you are interested in participating in EVEREST II, please discuss this with your doctor, contact an investigational site (link to site list) in your region or Evalve, Inc. (www.evalveinc.com). The EVEREST II trial investigators are seeking to enroll patients who have been diagnosed with Grade 3 (moderate to severe) or Grade 4 (severe) mitral regurgitation (MR), who are seeking treatment for their condition and who:
How long will the EVEREST II trial last? EVEREST II trial participants will participate in a number of associated tests, procedures and follow-up visits over the course of a 24-month period, starting in early 2005. How will patient safety be monitored in the EVEREST II trial? The rights and safety of clinical trial patients are protected in several important ways. First, every clinical trial must be designed and conducted with the approval and oversight of an Institutional Review Board (IRB) or ethics committee. The IRB is comprised of both physicians and lay people, and is responsible for reviewing and assessing the clinical trial’s protocols (e.g., detailed plans), in order to protect patients’ rights and safety. Equally important, prospective clinical trial participants are required to sign an "informed consent" form, which provides detailed information regarding the purpose and objectives of the clinical trial, the risks involved in the trial, and potential effects and risks of the trial on patients. All trial participants have the right to leave the trial whenever they wish. A Data Safety Monitoring Board (DSMB) is set up for additional patient safety as well. A DSMB is a group of experts who meet periodically to review accumulated information (data) gathered from participants in clinical trials with the purpose of protecting
A DSMB is made up of people external to the study group. The members of the Board
How can I learn more about the EVEREST II trial? To learn more about the EVEREST II clinical trial, please visit www.evalveinc.com or contact one of the research sites.
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