May 18, 2010 - Physician Prescriptions for LifeVest Top 25,000 INVESTOR CONTACT: A. Ernest WhitonChief Financial OfficerZOLL Medical Corporation+1 (978) 421-9655 MEDIA CONTACT: Diane EganZOLL Medical Corporation+1 (978) firstname.lastname@example.org PHYSICIAN PRESCRIPTIONS FOR ZOLL LIFEVEST TOP 25,000 Wearable Defibrillator Continues to Gain Acceptance as Standard of Care May 18, 2010─CHELMSFORD, MASS.–ZOLL Medical Corporation (Nasdaq GS: ZOLL), a manufacturer of medical devices and related software solutions, announced today that more than 25,000 patients at risk of sudden cardiac arrest (SCA) have been prescribed the LifeVest® Wearable Defibrillator. The LifeVest is worn by patients at risk for SCA, providing protection during their changing condition and while permanent SCA risk has not been established. The LifeVest allows a patient’s physician time to assess his/her long-term arrhythmic risk and make appropriate plans. The LifeVest is lightweight and easy to wear, allowing patients to return to their activities of daily living, while having the peace of mind that they are protected from SCA. The LifeVest continuously monitors the patient’s heart and, if a life-threatening heart rhythm is detected, the device delivers a treatment shock to restore normal heart rhythm. “The fact that the LifeVest has been prescribed by physicians to more than 25,000 patients is a tangible measure of the important role this treatment option plays in the standard of care for patients at risk of SCA,” stated Richard A. Packer, Chairman and Chief Executive Officer of ZOLL. “We value the trust our physician customers place in our service and respect the important work of protecting patients at risk of SCA.” “I believe it is also significant to note that LifeVest focused scientific publications and presentations have more than doubled over the last year, further demonstrating the ever-growing clinical engagement with the therapy,” Mr. Packer added. The LifeVest is used for a wide range of patient conditions or situations, including following a heart attack, before or after bypass surgery or stent placement, as well as for those with cardiomyopathy or congestive heart failure that places them at particular risk. The LifeVest is covered by most health plans in the United States, including commercial, state, and federal plans. For more information, go to www.zoll.com or call 1-800-543-3267. About ZOLL Medical Corporation ZOLL Medical Corporation develops and markets medical devices and software solutions that help advance emergency care and save lives, while increasing clinical and operational efficiencies. With products for defibrillation and monitoring, circulation and CPR feedback, data management, fluid resuscitation, and therapeutic temperature management, ZOLL provides a comprehensive set of technologies which help clinicians, EMS and fire professionals, and lay rescuers treat victims needing resuscitation and critical care. A NASDAQ Global Select company and a Forbes 100 Most Trustworthy Company for the past three years, ZOLL develops and manufactures its products in the United States, in California, Colorado, Illinois, Massachusetts, Pennsylvania, and Rhode Island. More than 400 direct sales and service representatives, 1,100 business partners, and 200 independent representatives serve our customers in over 140 countries around the globe. For more information, visit www.zoll.com. Certain statements contained in this press release, including statements regarding the future business of the Company, and other statements contained herein regarding matters that are not historical facts, are “forward-looking” statements (as defined in the Private Securities Litigation Reform Act of 1995). Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements include, but are not limited to, those factors discussed in the section entitled “Risk Factors” in the Company's Quarterly Report on Form 10-Q filed with the SEC on May 14, 2010. You should not place undue reliance on the forward looking statements in this press release, and the Company disavows any obligation to update or supplement those statements in the event of any changes in the facts, circumstances, or expectations that underlie those statements. Copyright © 2010 ZOLL Medical Corporation. All rights reserved. 269 Mill Road, Chelmsford, MA 01824-4105. ZOLL and LifeVest are registered trademarks of ZOLL Medical Corporation.