Date:5/4/2011

-term growth, and the ability of RHCG to expand patient access to the System One in Australia and New Zealand. Actual results may differ materially from those indicated by these forward-looking statements as a result of various important factors including customer demand for our products worldwide,  the ability of RHCG to successfully promote, sell and service our products, customer demand for our products in Australia and New Zealand and other factors  that are discussed in NxStage's Annual Report on Form 10-K for the year ended December 31, 2010 filed with the SEC. NxStage is under no obligation to (and expressly disclaims any such obligation to) update or alter its forward-looking statements, whether as a result of new information, future events or otherwise.

Media Contacts:
Kristen Sheppard, Esq.
Vice President, Investor Relations
NxStage Medical, Inc.
ir@nxstage.com
978-332-5923

Neil Spence
National Marketing Manager
Australia & New Zealand
Regional Health Care Group
3-11 Primrose Avenue,
ROSEBERY, NSW 2018
+61 2 9697 0933
+61 418 274 034
neils@regionalhealth.com.au

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SOURCE NxStage Medical, Inc. Copyright©2010 PR Newswire. All rights reserved

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