SMV2022-000中文资料

The BlackArmor® NAS 220 server is a small-business-specific network attached storage solution designed toprovide centralized storage and data backup, helping to deliver business continuity for up to 20 PCs. Automaticallybackup business-critical data with RAID 1 mirroring, full-system backup, SafetyDrill+™ bare metal recoverysoftware and powerful hardware-based encryption.Highlights• Designed to provide centralized storage and data backup for up to 20 PCs.• Enables automatic data mirroring with RAID 1 configuration.• Help protect network connected PCs with incremental and full-system, automatic backup.*• Time Machine® software compatible, for Mac® computer backup• Functions as an FTP server for remote file access.• Stream media to DLNA® compliant devices and computers running iTunes® software.• Includes two reliable, user-replaceable Seagate® hard drives.• Connect external drives, share a printer or utilize an uninterrupted power supply with the two USB 2.0 ports.• Secure files with powerful hardware-based encryption.• Microsoft® Active Directory 2003/2008 support for populating users and groups.• Multi-volume management.• Event email notification.• 3-year limited warranty.© 2010 Seagate Technology LLC. All rights reserved. Seagate, Seagate Technology, the Wave logo, Barracuda, Global Access and BlackArmor are trademarks or registered trademarks of Seagate Technology LLC or one ofits affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the property of their respective owners. When referring to hard drive capacity, one terabyte, or TB, equalsone thousand billion bytes. Your computer’s operating system may use a different standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions andwill not be available for data storage. The export or re-export of hardware or software containing encryption may be regulated by the U.S. Department of Commerce, Bureau of Industry and Security (for more information,visit ) and controlled for import and use outside of the U.S. Actual data rates may vary depending on operating environment and other factors. Seagate reserves the right to change, without notice, productofferings or specifications. Seagate Technology LLC, 920 Disc Drive, Scotts Valley CA 95066 U.S.A. DS1691.3-1010 AMERVisit for more information about these and other Seagate retail products.Perfect for when you need to:• S tore and access files from acentral, secure location.• A ccess and manage filesremotely.• S tream media with DLNA oriTunes®.• A utomatically perform full-system backups on networkconnected PC and Mac®computers.*• S ecure files with hardware-based encryption.• S hare a USB printer withnetwork connected PCs andMacs.Interface 10/100/1000 Ethernet, USB 2.0Capacities2TB, 4TB, 6TBSoftware Requirements PC On Network• Pentium® III, 500MHz equivalent processor or higher• Microsoft Windows® XP or Vista®• I nternet Explorer® 6.0 or later, or Firefox™ 2.X or later(for management interface and web access)• 256MB RAMMac On Network• Mac OS® X 10.4.11 or later• Apple® Safari® 3.1 or laterSystem Requirements• Local area network (LAN)• Internet connection (for system updates and web access)• W ired or wireless router with an available 10/100/1000Ethernet port• USB printer or USB disk drive (optional)Inside the Box • BlackArmor NAS 220 storage server• 2M – RJ45 cable• AC power cord• Quick Start Guide• DVD-ROM with– BlackArmor® Discovery Software for Windows® OS– BlackArmor® Discovery Software for Mac® OS– BlackArmor® Backup Software for Windows (5 licenses*)– Online registration link– Warranty information card*Additional licenses available for purchase at Connectivity• O ne Ethernet port for localnetwork connection, web-based management and remoteaccess.• T wo USB 2.0 ports for externaldrives, printers and uninterruptedpower supplies (UPS).• Two internal SATA II ports.* Includes data backup software licenses for 5 PCs. Additional licenses available for purchase at .Product Dimensions Horiz x Vert x Depth - 6.30”x 8.15” x 10.59” (160mm x 207mm x 269mm)Weight: 13.60lbs (6.16kg)Retail Packaging Specs Box dimensions: Horiz x Vert x Depth – 14.37” x 9.29” x 9.5” (277mm x 156mm x 279mm)Box weight: 16.6lbs (7.62Kg)Master carton dimensions: Horiz x Vert x Depth – 19.33” x 15.00” x 10.20” (322mm x 288mm x 301mm)Master carton weight: 36.05lbs (8.39Kg)Master carton quantity: 2Master cartons per pallet: 36Pallet dimensions: Horiz x Vert x Depth – 47.25” x 39.37” x 47.10” (1,016mm x 1,219.20mm x 1,030mm)Pallet weight: 718.85 lbs (326.06 kg)Pallet layers: 3Technical Specifications ConnectivityNetwork ProtocolsNetwork AuthenticationFile Sharing ProtocolsFile System ManagementVolume ManagementDisk ManagementBackup ManagementEvent ManagementMedia StreamingDownload ServerRemote Access• 2 internal SATA II ports• 2 USB 2.0 host portsCIFS, NFS, HTTP, HTTPS, FTP, Bonjour®RAID 0, 1, JBOD• Share management• Volume level encryption• Multi-volume management• SMART status monitor• L ocal backup(USB device to NAS, NAS to USB device)• Network NAS to NAS replicationEvent email notification• iTunes® server• DLNA® compliant digital media serverDownloader (HTTP and FTP)Seagate Global Access™ service• 1 RJ45 Ethernet port (Gigabit)• Share/folder-level access control list (ACL) support• Quotas setting• Drive standby mode• C lient system backup, Bare MetalRestore(full-system recovery) over network• Time Machine® software compatibleMicrosoft Windows® Server Active Directory 2000/2003/2008 integration for population of users and groups.CIFS, NFS, HTTPS, FTP over SSL/TLS, FTP, Bonjour, Microsoft RallyExpansionThe two rear-mounted USB 2.0 ports allow you to connectexternal USB hard drives for additional storage, easily share a USB printer with your network connected computers or connect an uninterrupted power supply (UPS) to safeguard from power failure.Business-grade ProtectionSoftware plays an important role in achieving business continuity and with the BlackArmor storage server, you can expect nothing less than business-grade protection. To help protect your critical data, our software package provides automatic, incremental and full-system backup. In the event of PC hardware failure, you can utilize the SafetyDrill+™ bare metal restore software feature to recover your entire system, including the operating system, programs and settings. The included software also allows you to secure your files with powerful hardware-based encryption. Furthermore, the two internal drives can be configured to RAID 1, which automatically mirrors your data.You’re in ControlIn addition to the included software, the web-based management interface and BlackArmor ® Discovery Tool are also straightforward to use. The BlackArmor Discovery Tool allows you to get up and running quickly by displaying all of the BlackArmor NAS products connected to your network. From the Discovery Tool, with a single click, you can view or map shared volumes to your computer, access the web-based management interface or back up the PC you are working from. The BlackArmor NAS 220 storage server can also be managed remotely with DDNS, which can be configured from the web-based management interface or back up the PC you are working from. Mac ® computers can be backed up by using Time Machine ® software, which offers full-system, incremental backup over the network.The BlackArmor ® NAS 220 storage server can also function as an FTP server, allowing remote access to files. Using the web-basedmanagement interface, you can designate user access manually or integrate with Microsoft ® Active Directory to populate users and groups..Moreover, the BlackArmor NAS 220 storage server can stream media files to DLNA ® compliant devices or computers running iTunes ® software, allowing you to centralize media in your office and display content simultaneously on multiple devices.Designed to provide centralized storage and data backup.Performance that Keeps Pace with Your Business The BlackArmor ® NAS 220 storage server makes no compromises when it comes to hardware, with Seagate ® Barracuda ® drives, 800 MHZ processor, 128 MB RAM and Gigabit Ethernet port, you will experience incredible performance – including read speeds of up to 70 MB/s in RAID 1 configuration*.The BlackArmor NAS 220 storage server includes two energy efficient, reliable Seagate hard drives, which are user-replaceable, allowing you to upgrade to larger capacity drives as your business grows.* Read performance obtained with CrystalDiskMark 3.0 on a Windows ® 7 x64 system.。

mA
Data Out Sink Current
ISINK
0.45
0.45 0.70
0.40
mA
Logic Input Capacitance CIN
10
10
10
pF
Test Conditions
ISIG = 5mA VPP = 40V, ISIG = 200mA VNN = -160V ISIG = 5mA VPP = 100V, ISIG = 200mA VNN = -100V ISIG = 5mA VPP = 160V, ISIG = 200mA VNN = -40V ISW = 5mA, VPP = 100V, VNN = -100V VSIG = VPP - 10V, ISIG = 1A
This IC is suitable for various combinations of high voltage supplies, e.g., VPP/VNN : +50V/–150V, or +100V/–100V.
Absolute Maximum Ratings*
V Logic power supply voltage DD
Characteristics
Sym
0°C min max
+25°C min typ max
+70°C min max
Set Up Time Before LE Rises
tSD
Time Width of LE
tWLE
Clock Delay Time to Data Out
-0.5V to +15V
220V
-0.5V to VNN +200V +0.5V to -200V

㊃肿瘤专栏㊃[收稿日期]2023-02-27[基金项目]河北省医学科学研究重点课题计划(20180505)[作者简介]贺萧萧(1996-),女,河北邯郸人,河北医科大学第四医院医学硕士研究生,从事消化道肿瘤的影像诊断研究㊂*通信作者㊂E -m a i l :135********@163.c o m腹部脂肪及骨骼肌C T 测量在胃癌患者营养评估中的价值贺萧萧1,马国洪2,刘 羽2,李 敏1,尤 杨1,杨 丽1*(1.河北医科大学第四医院C T /M R I 科,河北石家庄050011;2.河北医科大学第四医院外三科,河北石家庄050011) [摘要] 目的探讨腹部脂肪及骨骼肌C T 测量指标在胃癌患者营养评估中的价值㊂方法连续收集胃癌患者56例,记录临床营养评估指标㊁营养风险筛查2002(n u t r i t i o nr i s ks c r e e n i n g ,N R S 2002)评分及患者主观整体评估(p a t i e n t -g e n e r a t e d s u b j e c t i v e g l o b a l a s s e s s m e n t ,P G -S G A )评分㊂在患者术前腹部C T 图像上测量脐平面及全腹内脏脂肪容积(v i s c e r a l f a t v o l u m e ,V F V )㊁皮下脂肪容积(s u b c u t a n e o u s f a t v o l u m e ,S F V ),计算内脏与皮下脂肪容积比(v i s c e r a l -t o -s u b c u t a n e o u s f a t v o l u m e r a t i o ,V S R )㊁内脏脂肪百分比(v i s c e r a l f a t p e r c e n t a g e ,V F %);测量腰3横突平面及腰3椎体水平骨骼肌容积(s k e l e t a lm u s c l ev o l u m e ,S MV ),计算骨骼肌指数(s k e l e t a lm u s c l e i n d e x ,S M I )㊂分析C T 测量指标与临床营养评分及定量指标的相关性㊂结果单次腹部脂肪及骨骼肌C T 测量结果与N R S 2002及P G -S G A 评分无相关性㊂二维与三维测量的V F V ㊁S F V 呈正相关(r =0.906㊁0.921,P <0.001)㊂V F V ㊁S F V 与患者B M I 呈正相关(P <0.001)㊂S M I ㊁二维及三维S MV 与右上臂肌围及握力呈正相关(P <0.001)㊂结论腹部脂肪及骨骼肌C T 测量指标与临床营养评估定量指标具有相关性,对胃癌患者营养评估具有一定价值㊂ [关键词] 胃肿瘤;脂肪测量;骨骼肌测量 d o i :10.3969/j.i s s n .1007-3205.2024.03.002 [中图分类号] R 735.2 [文献标志码] A [文章编号] 1007-3205(2024)03-0254-06T h e v a l u e o fC Tm e a s u r e m e n t o f a b d o m i n a l f a t a n d s k e l e t a lm u s c l e i nn u t r i t i o n a l a s s e s s m e n t o f p a t i e n t sw i t h g a s t r i c c a n c e rH EX i a o -x i a o 1,MA G u o -h o n g 2,L I U Y u 2,L IM i n 1,Y O U Y a n g 1,Y A N GL i 1*(1.D e p a r t m e n t o f C T /M R I ,t h eF o u r t h H o s p i t a l o f H e b e iM e d i c a lU n i v e r s i t y ,S h i j i a z h u a n g050011,C h i n a ;2.T h eT h i r dD e p a r t m e n t o f S u r g e r y ,t h eF o u r t h H o s p i t a l o fH e b e iM e d i c a lU n i v e r s i t y ,S h i j i a z h u a n g 050011,C h i n a )[A b s t r a c t ] O b je c t i v e T o i n v e s t i g a t e t h ev a l u eo fC T m e a s u r e m e n tof a b d o m i n a l f a ta n d s k e l e t a lm u s c l e i n t h en u t r i t i o n a l a s s e s s m e n t o f p a t i e n t sw i t hg a s t r i c c a n c e r .M e th o d s Fi f t y-s i x p a t i e n t sw i t h g a s t r i cc a n c e r w e r ec o n s e c u t i v e l y co l l e c t e d ,a n dc l i n i c a ln u t r i t i o n a la s s e s s m e n t i n d e x e s ,n u t r i t i o n a l r i s k s c r e e n i n g 2002(N R S 2002)s c o r e s a n d p a t i e n t -g e n e r a t e d s u b je c t i v e g l o b a l a s s e s s m e n t (P G -S G A )s c o r e sw e r er e c o r d e d .V i s c e r a lf a tv o l u m e (V F V )a n ds u b c u t a n e o u s f a t v o l u m e (S F V )o f t h eu m b i l i c a l p l a n ea n d w h o l ea b d o m e n w e r e m e a s u r e d ,r e s p e c t i v e l y.T h e n v i s c e r a l -t o -s u b c u t a n e o u sf a t v o l u m er a t i o (V S R )a n d v i s c e r a lf a t p e r c e n t a ge (V F %)w e r e c a l c u l a t e d .S k e l e t a lm u s c l ev o l u m e (S MV )of t h et h i r dl u m b a rt r a n s v e r s e p l a n ea n dt h et h i r dl u m b a rv e r t e b r a p l a n e w e r e m e a s u r e d ,a n ds k e l e t a l m u s c l ei n d e x (S M I )w a sc a l c u l a t e d .T h e c o r r e l a t i o n s o fC T m e a s u r e m e n t sw i t hc l i n i c a ln u t r i t i o ns c o r e sa n dc l i n i c a l q u a n t i t a t i v e i n d e x e sw e r e a n a l y z e d .R e s u l t s T h e s i n g l eC T m e a s u r e m e n t r e s u l t s o f a b d o m i n a l f a t a n d s k e l e t a lm u s c l e ㊃452㊃第45卷第3期2024年3月河北医科大学学报J O U R N A L O F H E B E I M E D I C A L U N I V E R S I T YV o l .45 N o .3M a r . 2024h a dn o c o r r e l a t i o nw i t hN R S2002a n dP G-S G As c o r e s,w h i l e2Da n d3D m e a s u r e m e n t so fV F V a n dS F V s h o w e d p o s i t i v ec o r r e l a t i o n s(r=0.906,0.921,P<0.001).V F V a n d S F V w e r e p o s i t i v e l y c o r r e l a t e dw i t hB M I(P<0.001).S M I,2Da n d3D S MV w e r e p o s i t i v e l y c o r r e l a t e d w i t h r i g h tu p p e ra r m m u s c l ec i r c u m f e r e n c ea n d g r i p s t r e n g t h(P<0.001).C o n c l u s i o n C T m e a s u r e m e n t i n d e x e s o fa b d o m i n a lf a ta n d s k e l e t a l m u s c l e a r ec o r r e l a t e d w i t h q u a n t i t a t i v e i n d e x e s o f c l i n i c a l n u t r i t i o n a l a s s e s s m e n t,w h i c hh a v e c e r t a i nv a l u e f o rn u t r i t i o n a l a s s e s s m e n t o f g a s t r i c c a n c e r p a t i e n t s.[K e y w o r d s]s t o m a c hn e o p l a s m s;f a tm e a s u r e m e n t;s k e l e t a lm u s c l em e a s u r e m e n t营养不良是影响胃癌患者预后的重要因素之一,可导致并发症风险增加㊁住院时间延长㊁对治疗的耐受性和反应性降低,生存率及生活质量下降[1-3]㊂因此,早期发现营养不良,并进行有效的营养干预在胃癌患者治疗中起着重要作用㊂目前临床多通过营养风险筛查2002(n u t r i t i o n r i s k s c r e e n i n g,N R S2002)㊁患者主观整体评估(p a t i e n t-g e n e r a t e ds u b j e c t i v e g l o b a la s s e s s m e n t,P G-S G A)进行营养评估[4],但两者多依据患者主观感受,客观指标少且缺乏明确的评分标准㊂腹部C T为胃癌患者的常规检查,可在不增加检查费用及辐射剂量的情况下准确测量腹部脂肪及骨骼肌含量并反映其分布情况㊂已有研究[5-6]表明,腹部脂肪分布及骨骼肌含量与肿瘤患者预后相关,本研究通过分析胃癌患者腹部脂肪及骨骼肌C T测量指标与临床营养评分及定量指标的相关性,探讨其在胃癌患者营养评估中的应用价值㊂1资料与方法1.1一般资料选取2021年9月 2022年2月就诊于我院胃肠外科的初诊胃癌患者56例为研究对象,纳入标准:①经病理证实为胃癌;②患者未接受任何抗肿瘤治疗;③患者入院后48h内行全腹增强C T扫描;④入院后24~48h内完成身高㊁体重㊁体重指数(b o d y m a s s i n d e x,B M I)㊁三头肌皮褶厚度㊁非利手握力㊁右上臂肌围的测量及营养风险筛查和营养状况评估㊂排除标准:①呼吸或异物伪影所致图像质量不佳;②患有语言及精神障碍等无法配合完成临床营养评估㊂本研究经医院伦理委员会审批通过㊂所有患者及其家属均知情同意且签署知情同意书㊂1.2方法1.2.1临床营养评估患者入院后由一名外科医生收集患者的基本信息,包括性别㊁年龄㊁身高㊁体重及病史等信息,并依据N R S2002和P G-S G A评分表对患者进行营养风险筛查和营养状况评估,其中N R S2002评分主要依据患者的疾病情况㊁营养状况和年龄等因素;P G-S G A评分则由患者自我评估和医务人员评估两部分组成,包括体重㊁摄食情况㊁症状㊁活动和身体功能㊁疾病与营养需求的关系㊁代谢需求㊁体格检查等7个方面㊂1.2.2 C T检查方法患者检查前空腹6~8h,于扫描前10m i n肌内注射山莨菪碱10m g,口服温水800~1000m L㊂采用S I E M E N S S OMA T OM F o r c eC T进行扫描,仰卧位双手上举,于吸气后进行屏气扫描,扫描范围为右膈顶至耻骨联合下缘㊂平扫参数:管电压120k V,开启C A R ED o s e4D,参考电流147m A s,准直器宽度192ˑ0.6mm,螺距0.6㊂使用高压注射器以3.0m L/s速率经肘静脉注射碘海醇(300g I/L),剂量1.5m L/k g,分别于注射后35s和70s进行动脉期及静脉期扫描㊂增强扫描参数:球管A和球管B管电压100k V和S n 150k V,开启C A R ED o s e4D,参考电流190m A s㊁95m A s,准直器宽度192ˑ0.6mm,螺距0.5㊂1.3图像分析将层厚为5mm的平扫图像传至工作站(s y n g o.v i aV B20,S I E M E N S),由一名具有5年诊断经验的影像医生采用C T半自动分割技术勾画并测量腹部脂肪及骨骼肌含量㊂1.3.1脂肪测量使用A b d o m i n a l F a t M e a s u r e m e n t工具,在脐平面沿腹壁内缘手动勾画腹壁脂肪与内脏脂肪的分界线,设定脂肪组织C T 衰减值范围为-190~-30HU,软件自动测得脐平面二维内脏脂肪容积(v i s c e r a l f a t v o l u m e,V F V)及皮下脂肪容积(s u b c u t a n e o u s f a t v o l u m e,S F V)(图1A)㊂采用相同方法逐层勾画全腹层面,测得全腹三维V F V及S F V(图1B),计算得内脏与皮下脂肪容积比(v i s c e r a l-t o-s u b c u t a n e o u s f a tv o l u m e r a t i o, V S R)㊁内脏脂肪百分比(v i s c e r a l f a t p e r c e n t a g e, V F%)㊂公式如下:V S R=V F VS F VV F%=V F V(V F V+S F V)ˑ100%㊂㊃552㊃河北医科大学学报第45卷第3期1.3.2骨骼肌测量选取腰3椎体横突平面,使用R e g i o nG r o w i n g工具沿腹壁皮下脂肪外缘和腹壁内缘手动勾画腹壁范围,设定骨骼肌C T衰减值范围为-29~150HU㊂软件自动测得腰3横突平面二维骨骼肌容积(s k e l e t a lm u s c l ev o l u m e,S MV)(图2A),采用相同方法逐层勾画并测量腰3椎体上下缘间骨骼肌容积(图2B)㊂计算腰3横突平面骨骼肌指数(s k e l e t a lm u s c l e i n d e x,S M I)㊂公式如下: S M I=S MV层厚ˑ1身高2(层厚=5mm)㊂图1脐平面和全腹部C T脂肪测量图(红色区域:内脏脂肪;蓝色区域:皮下脂肪)A.脐平面脂肪测量图;B.全腹部脂肪测量图F i g u r e1C T m e a s u r e m e n to fa b d o m i n a lf a to ft h eu m b i l i c a l p l a n ea n d w h o l ea b d o m e n图2腰3椎体横突平面和腰3椎体平面C T骨骼肌测量图A.腰3椎体横突平面骨骼肌测量图;B.腰3椎体平面骨骼肌测量图F i g u r e2C T m e a s u r e m e n t o f s k e l e t a lm u s c l eo f t h e t h i r dl u m b a r t r a n s v e r s e p l a n ea n d t h e t h i r d l u mb a r v e r t e b r a p l a n e1.4统计学方法应用S P S S26.0统计学软件分析数据㊂计量资料比较采用t检验;腹部脂肪㊁骨骼肌C T测量指标与临床营养评估定量指标的相关分析采用P e a r s o n法㊁S p e a r m a n法㊂P<0.05为差异有统计学意义㊂2结果2.1腹部脂肪㊁骨骼肌二维与三维测量结果的相关性分析二维测量与三维测量的V F V㊁S F V呈正相关(r=0.906㊁0.921,P<0.001㊁<0.001)㊂二维测量与三维测量的S MV呈正相关(r=0.687,P<0.001)㊂2.2腹部脂肪㊁骨骼肌C T测量指标与N R S2002及P G-S G A评分的相关性分析根据N R S2002评分将患者分成无营养风险组(<3分)39例及有营养风险组(ȡ3分)17例,根据P G-S G A评分将患者分为营养良好组(<4分)22例及营养不良组(ȡ4分)34例,N R S2002评分与P G-S G A评分呈正相关(r=0.416,P<0.001)㊂腹部脂肪㊁骨骼肌C T测量指标与N R S2002评分㊁P G-S G A评分无相关性(P>0.05)㊂无营养风险组与有营养风险组,营养良好组与营养不良组各C T测量指标比较差异无统计学意义(P>0.05),见表1~3㊂表1临床及C T测量指标与N R S2002评分及P G-S G A评分的相关性T a b l e1C o r r e l a t i o no f c l i n i c a l a n dC Tm e a s u r e m e n ti n d i c a t o r sw i t hN R S2002s c o r e s a n dP GS G As c o r e s参数N R S2002评分r值P值P G-S G A评分r值P值B M I-0.0910.506-0.0180.896皮褶厚度(mm)-0.2310.0870.0470.731握力(k g)-0.1950.151-0.1730.201右上臂肌围(c m)-0.0560.6820.0410.766V F V二维(m L)-0.1330.328-0.1490.273S F V二维(m L)-0.1260.3560.0920.501V S R二维0.0070.961-0.2100.120V F%二维0.0050.968-0.2080.125V F V三维(m L)-0.0560.681-0.0020.991S F V三维(m L)-0.1370.3510.1430.293V S R三维0.1330.328-0.1930.154V F%三维0.1250.357-0.2000.139S M I-0.0270.845-0.1180.387S MV二维(m L)-0.0550.686-0.1840.174S MV三维(m L)-0.0150.9140.0330.810㊃652㊃河北医科大学学报第45卷第3期表2 无营养风险组与有营养风险组的临床及C T 测量指标的比较T a b l e 2 C o m p a r i s o no f c l i n i c a l a n dC Tm e a s u r e m e n t i n d i c a t o r s b e t w e e n t h e g r o u p wi t h o u t n u t r i t i o n a l r i s k a n d t h e g r o u p wi t hn u t r i t i o n a l r i s k (x -ʃs )组别例数B M I 皮褶(mm )握力(k g)右上臂肌围(c m )V F V 二维(m L )S F V 二维(m L )V S R 二维V F %二维无营养风险组3924.67ʃ2.789.67ʃ2.6728.95ʃ2.8824.38ʃ2.3860.90ʃ25.4885.16ʃ38.850.78ʃ0.280.42ʃ0.19有营养风险组1723.80ʃ3.768.81ʃ2.8224.77ʃ6.9523.64ʃ2.8754.89ʃ29.4476.07ʃ42.700.79ʃ0.320.43ʃ0.09t 值0.9561.0911.7231.0810.7750.7820.1770.111P 值0.3430.2800.0910.3290.4420.4380.8600.912组别例数V F V 三维(m L )S F V 三维(m L )V S R 三维V F %三维S M IS MV 二维(m L )S MV 三维(m L )无营养风险组393425.86ʃ1505.215068.91ʃ2212.280.72ʃ0.260.40ʃ0.0946.56ʃ8.9365.11ʃ15.41478.30ʃ163.73有营养风险组173133.51ʃ1597.024384.31ʃ2367.900.75ʃ0.200.42ʃ0.6644.39ʃ10.0359.63ʃ15.03469.31ʃ176.22t 值0.6561.0430.4350.6700.8041.2320.151P 值0.5140.3020.6650.5030.4250.2230.880表3 营养良好组与营养不良组的临床及C T 测量指标的比较T a b l e 3 C o m p a r i s o no f c l i n i c a l a n dC Tm e a s u r e m e n t i n d i c a t o r s b e t w e e n t h ew e l l n o u r i s h e d g r o u pa n d t h em a l n o u r i s h e d g r o u p(x -ʃs )组别例数B M I 皮褶(mm )握力(k g)右上臂肌围(c m )V F V 二维(m L )S F V 二维(m L )V S R 二维V F %二维营养良好组2224.42ʃ2.599.22ʃ2.8129.66ʃ9.5524.19ʃ2.4859.62ʃ27.2974.28ʃ36.930.84ʃ0.250.45ʃ0.08营养不良组3424.40ʃ3.439.52ʃ2.6926.40ʃ7.6324.14ʃ2.7158.73ʃ26.5887.66ʃ41.370.74ʃ0.210.41ʃ0.10t 值0.0230.4011.4140.3570.1211.2321.3151.516P 值0.9820.9970.1630.9460.9040.2230.1940.135组别例数V F V 三维(m L )S F V 三维(m L )V S R 三维V F %三维S M IS MV 二维(m L )S MV 三维(m L )营养良好组223182.45ʃ1437.064271.17ʃ2009.090.77ʃ0.230.43ʃ0.2847.48ʃ7.5067.07ʃ11.85469.94ʃ173.61营养不良组343437.18ʃ1592.425242.79ʃ2360.430.70ʃ0.250.40ʃ0.0844.88ʃ10.1861.09ʃ17.02465.53ʃ162.29t 值0.6071.5921.5021.2031.0271.4350.674P 值0.5460.1170.2680.2340.3090.1570.7542.3 腹部脂肪及骨骼肌C T 测量指标与临床营养评估定量指标的相关性分析 二维及三维V F V ㊁S F V 与患者B M I 呈正相关(P <0.001)㊂S M I㊁二维S MV 与B M I 呈正相关(P <0.001)㊂二维及三维V S R ㊁V F %与B M I 无相关性(P >0.05)㊂S M I ㊁二维及三维S MV 与右上臂肌围及握力呈正相关(P <0.001)㊂脂肪C T 测量指标与右上臂肌围㊁握力及三头肌皮褶厚度无相关性(P >0.05)㊂见表4㊂表4 腹部脂肪及骨骼肌C T 测量指标与临床营养评估定量指标的相关性T a b l e 4 C o r r e l a t i o nb e t w e e nC Tm e a s u r e m e n t o f a b d o m i n a l f a t a n d s k e l e t a lm u s c l e a n d q u a n t i t a t i v e i n d e x e s o f c l i n i c a l n u t r i t i o n参数B M Ir 值P 值右上臂肌围(c m )r 值P 值握力(k g)r 值P 值三头肌皮褶(mm )r 值P 值V F V 二维(m L )0.644<0.0010.3410.0100.1670.2190.3830.004S F V 二维(m L )0.601<0.0010.3800.004-0.0280.8350.2740.041V S R 二维-0.0150.914-0.1100.4200.1190.3840.0870.522V F %二维0.0030.981-0.0990.4680.1250.3590.0840.536V F V 三维(m L )0.714<0.0010.3990.0020.1540.2570.3970.002S F V 三维(m L )0.602<0.0010.3360.011-0.1120.4130.3980.002V S R 三维0.1620.2330.0550.6870.3040.023-0.0690.612V F %三维0.1610.2350.0690.6140.2990.025-0.0630.646S M I0.505<0.0010.565<0.0010.455<0.001-0.2160.109S MV 二维(m L )0.4330.0010.564<0.0010.581<0.001-0.1850.172S MV 三维(m L )0.2320.0860.489<0.0010.646<0.001-0.0280.839㊃752㊃河北医科大学学报 第45卷 第3期3讨论胃部恶性肿瘤常影响食物的摄入㊁消化和吸收,因此胃癌患者营养风险高,更容易发生营养不良[7]㊂本研究60.7%的胃癌患者存在营养不良,与文献报道一致[8],但根据N R S2002评分,仅有30.3%的患者存在营养风险,这可能与N R S2002评分特异度高而敏感度低有关[9]㊂N R S2002是第一个在循证医学基础上发展起来的营养风险筛查工具,适用于住院患者营养风险筛查;P G-S G A评分是一种有效的肿瘤患者特异性营养状况评估工具,其对癌症患者的营养不良具有较好的敏感度㊁特异度以及预测价值㊂本研究未得到腹部脂肪㊁骨骼肌C T测量指标与N R S2002及P G-S G A评分具有相关性的结果,这可能与临床营养评估多依据患者近期体重㊁膳食摄入㊁症状㊁活动和功能状态的动态变化,而单次腹部脂肪及骨骼肌C T测量仅反映患者一个时间点的脂肪和骨骼肌状态㊂于患者不同治疗阶段复查C T 时进行动态监测脂肪及骨骼肌指标,其变化情况可能更有利于反映患者的营养状态㊂二维与三维脂肪测量结果呈正相关,脐平面脂肪分布及容积可以反映全腹脂肪情况,且二维测量具有省时㊁高效的优势㊂B M I是营养评估的重要指标,本研究中营养风险组与无营养风险组,营养不良组与营养良好组B M I差异无统计学意义,可能与本研究样本量较小,且均为胃癌初诊患者,B M I严重降低者少有关㊂本研究结果显示,腹部脂肪容积较骨骼肌指标与B M I更具相关性,因B M I不能反映脂肪分布情况,故反映脂肪分布的V S R[10]㊁V F%与B M I无相关性㊂腹部脂肪C T测量指标可以客观㊁准确的反映胃癌患者身体脂肪的含量及分布情况,避免了皮褶厚度㊁B M I等临床营养指标的局限性,如皮褶厚度的测量结果会受到测量者技能及测量部位的影响,并且只能反映皮下脂肪含量,不能评估患者的内脏脂肪含量㊂而B M I虽广泛应用于营养不良的评估中,但也存在着种族和年龄等方面的差异,且不能反映脂肪及骨骼肌含量的比例㊂已有研究表明,腹部内脏脂肪在预测胃切除术患者短期手术结果方面优于B M I[11]㊂此外,内脏脂肪是胃癌术后腹腔内感染㊁手术部位感染㊁吻合口瘘等并发症的危险因素[12-13],且与患者预后有关,低内脏脂肪预示着较差的无进展生存期及总生存期[6,14]㊂K i m等[15]的研究亦表明,内脏脂肪与皮下脂肪比值可以较好的预测手术部位感染㊂C T脂肪测量不仅可以准确测量脂肪容积,还可反映其分布情况,因此对预测胃癌患者术后并发症风险及评估预后更具潜在价值[16]㊂骨骼肌含量是评估肌质量和功能的重要指标,可以反映患者的营养状况和身体功能状态㊂研究[17]显示,低骨骼肌质量是肿瘤患者治疗反应差的危险因素㊂腰3椎体水平骨骼肌含量能较好的代表全身骨骼肌含量[8,18],因此本研究选取腰3椎体横突层面进行测量㊂本研究结果显示,腹部骨骼肌指标与右上臂肌围及握力更具相关性,骨骼肌三维测量更能反映肌的功能状态㊂脂肪和骨骼肌均是人体的重要的组织,但它们所反应的身体状况不同,脂肪含量的变化主要反应身体营养状况,而骨骼肌含量的变化则主要反应身体功能状态,例如肌消耗和体力下降㊂因此,C T动态监测脂肪含量可以帮助医生及时发现营养不良的患者,采取相应的营养支持措施,而动态监测骨骼肌含量可以帮助医生及时发现肌消耗和体力下降的患者,采取相应的康复措施㊂随胃癌患者不同治疗阶段复查C T动态监测腹部脂肪及骨骼肌含量,有助于临床及时发现患者的营养状态变化情况,采取相应的营养支持措施,从而提高患者的预后和生存率㊂本研究中反映骨骼肌含量的右上臂肌围在营养良好组与营养不良组差异无统计学意义,考虑可能受到样本量的影响,且上臂肌围在不同性别间差异有统计学意义,而本研究未对性别进行分类㊂三头肌皮褶厚度与腹部皮下脂肪容积均反映皮下脂肪情况,但本研究结果显示两者之间无相关性,这可能是因为皮褶厚度反映四肢脂肪储存量,而腹部皮下脂肪反映躯干脂肪储存量;此外,两者随年龄变化趋势不同,而本研究未考虑年龄因素㊂本研究的局限性:①本研究样本量较小,结果有待大样本研究进一步验证;②本研究为横断面研究,动态监测腹部脂肪及骨骼肌状态C T测量指标的变化情况可能对胃癌患者的营养评估更具临床意义㊂[参考文献][1] K a r a b u l u t S,D o g a nI,U s u lA f s a rC,e ta l.D o e sn u t r i t i o n a ls t a t u sa f f e c tt r e a t m e n tt o l e r a b i l i t y,c h e m o t h e r a p y r e s p o n s ea n ds u r v i v a l i nm e t a s t a t i c g a s t r i c c a n c e r p a t i e n t s R e s u l t s o f ap r o s p e c t i v e m u l t i c e n t e rs t u d y i n T u r k e y[J].O n c o lP h a r mP r a c t,2022,28(1):127-134.[2]S a l a s S,C o t t e tV,D o s s u sL,e t a l.N u t r i t i o n a l f a c t o r sd u r i n ga n d a f t e r c a n c e r:i m p a c t so ns u r v i v a l a n d q u a l i t y o f l i f e[J].N u t r i e n t s,2022,14(14):2958.[3] N i k n i a zZ,S o m i MH,N a g h a s h iS.M a l n u t r i t i o na n d w e i g h tl o s sa s p r o g n o s t i cf a c t o r si nt h es u r v i v a lo f p a t i e n t s w i t hg a s t r i c c a n c e r[J].N u t rC a n c e r,2022,74(9):3140-3145.[4]李子禹,闫超,李沈.胃癌围手术期营养治疗中国专家共识㊃852㊃河北医科大学学报第45卷第3期(2019版)[J].中国实用外科杂志,2020,40(2):145-151.[5]陶应伟,李茂.术后/术前骨骼肌指数比在非小细胞肺癌根治术后的临床意义[J].实用放射学杂志,2020,36(4):5.[6] F e n g W,H u a n g M,Z h a oX,e ta l.S e v e r e l o s so fv i s c e r a l f a ta n d s k e l e t a l m u s c l e a f t e r c h e m o t h e r a p y p r e d i c t s p o o rp r o g n o s i s i n m e t a s t a t i c g a s t r i c c a n c e r p a t i e n t s w i t h o u tg a s t r e c t o m y[J].C a n c e r,2020,11(11):3310-3317.[7]I d aS,K u m a g a iK,N u n o b eS.C u r r e n t s t a t u so f p e r i o p e r a t i v en u t r i t i o n a l i n t e r v e n t i o n a n d e x e r c i s e i n g a s t r i c c a n c e r s u r g e r y:Ar e v i e w[J].A n nG a s t r o e n t e r o l S u r g,2021,6(2):197-203.[8]彭海艳,戴静,王文博,等.肌测量与P G-S G A评估在胃癌患者营养评估中的相关性研究[J/C D].肿瘤代谢与营养电子杂志,2020,7(2):188-192.[9] Y a n g D,Z h e n g Z,Z h a oY,e t a l.P a t i e n t-g e n e r a t e ds u b j e c t i v eg l o b a l a s s e s s m e n tv e r s u sn u t r i t i o n a l r i s ks c r e e n i n g2002f o rg a s t r i c c a n c e r i nC h i n e s e p a t i e n t s[J].F u t u r eO n c o l,2020,16(3):4475-4483.[10]孙潇楠,孟闫凯,高晶晶,等.C T腹部脂肪定量参数与颈动脉粥样硬化的相关性研究[J].实用放射学杂志,2022,38(8):1278-1283.[11] Y a n g S J,L iH R,Z h a n g WH,e t a l.V i s c e r a l f a t a r e a(V F A)s u p e r i o rt o b m if o r p r e d i c t i n g p o s t o p e r a t i v ec o m p l i c a t i o n sa f t e rr a d i c a l g a s t r e c t o m y:a p r o s p e c t i v ec o h o r ts t u d y[J].G a s t r o i n t e s t S u r g,2020,24(6):1298-1306.[12] B i a nL,W u D,C h e n Y,e ta l.A s s o c i a t i o n so fr a d i o l o g i c a lf e a t u r e so fa d i p o s et i s s u e s w i t h p o s t o p e r a t i v ec o m p l i c a t i o n sa n do v e r a l l s u r v i v a l o f g a s t r i c c a n c e r p a t i e n t s[J].E u rR a d i o l,2022,32(12):8569-8578.[13]蓝巧清,龙莉玲,史波,等.C T脂肪定量与胃癌术后相关并发症的关系[J].放射学实践,2018,33(3):270-274.[14] Z h a n g Y,L i Z,J i a n g L,e t a l.I m p a c t o f b o d y c o m p o s i t i o no nc l i n i c a lo u t c o m e si n p e o p l e w i t h g a s t r i cc a n c e ru nde r g o i n gr a d i c a l g a s t r e c t o m y a f t e r n e o a d j u v a n t t r e a t m e n t[J].N u t r i t i o n,2021,85:111135.[15] K i m J H,K i m J,L e e W J,e t a l.A h i g h v i s c e r a l-t o-s u b c u t a n e o u s f a t r a t i o i s a n i n d e p e n d e n t p r e d i c t o ro f s u r g i c a ls i t e i n f e c t i o na f t e r g a s t r e c t o m y[J].JC l i n M e d,2019,8(4):494.[16] Z h a n g Y,J i a n g L,S u P,e t a l.V i s c e r a l a d i p o s e t i s s u ea s s e s s m e n t e n h a n c e s t h e p r o g n o s t i cv a l u eo f g l i m c r i t e r i a i np a t i e n t sw i t h g a s t r i cc a n c e ru n d e r g o i n g r a d i c a l g a s t r e c t o m ya f t e rn e o a d j u v a n tt r e a t m e n t[J].N u t r i e n t s,2022,14(23):5047.[17]S u r o vA,S t r o b e lA,B o r g g r e f eJ,e ta l.L o ws k e l e t a lm u s c l em a s s p r e d i c t s t r e a t m e n t r e s p o n s e i n o n c o l o g y:a m e t a-a n a l y s i s[J].E u rR a d i o l,2023,33(9):6426-6437.[18] Y a m a m o t o M,O z a w a S,K o y a n a g i K,e ta l.U s e f u l n e s so fs k e l e t a l m u s c l e m e a s u r e m e n tb y c o m p u t e dt o m o g r a p h y i np a t i e n t sw i t he s o p h a g e a l c a n c e r:c h a n g e s i ns k e l e t a lm u s c l em a s s d u e t o n e o a d j u v a n tt h e r a p y a n d t h e e f f e c t o n t h ep r o g n o s i s[J].S u r g T o d a y,2023,53(6):692-701.(本文编辑:何祯)㊃952㊃贺萧萧等腹部脂肪及骨骼肌C T测量在胃癌患者营养评估中的价值。

Important Safety InstructionsSAVE THESE INSTRUCTIONS - This manual contains importantinstructions that should be followed during installation and maintenance of the Easy UPS and batteries.Read these instructions carefully and look at the equipment to becomefamiliar with the device before trying to install, operate, service or maintain it. The following special messages may appear throughout this manual or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.The addition of either symbol to a “Danger” or “Warning” safetylabel indicates that an electrical hazard exists which will resultin personal injury if the instructions are not followed.This is the safety alert symbol. It is used to alert you to potentialpersonal injury hazards. Obey all safety messages that followthis symbol to avoid possible injury or death.Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA2Product Handling GuidelinesSafety and General InformationGeneral safety• Adhere to all national and local electrical codes.• This UPS is for indoor use only. To prevent the risk of fire or electric shock, install in temperature and humidity controlled indoor area, free of conductive contaminants.Easy UPS must be installed indoor with controlled environment free of excessive dust, corrosive air or conductive dust. Keep out of direct sun light, water and heat sources.• Place the unit on the stable floor.• Be sure that the mains socket outlet that supplies the UPS is installed near the UPS and easily accessible. Avoid using extension cords.• UPS must be connected to an earthed mains socket outlet.• Connect the power cable directly to a wall outlet. Do not use surge protectors or extension cords.• CAUTION : This UPS is designed to satisfy the requirement of PCs only.• Do not connect printers, heaters, or copiers to the UPS.Battery safety<18 kg <40 lb 18-32 kg 40-70 lb 32-55 kg 70-120 lb >55 kg >120 lb• Servicing of user replaceable batteries should be performed orsupervised by personnel knowledgeable about batteries and requiredprecautions.NOTE: In this case batteries are not user replaceable.• When replacing battery the UPS must be off, and its AC inletunplugged.• CAUTION: Do not dispose of batteries in a fire. The batteries mayexplode.• CAUTION: Do not open or mutilate batteries. Released material isharmful to the skin and eyes and may be toxic.• CAUTION: A battery can present a risk of electrical shock and burns byhigh short-circuit current. Contact with any part of a grounded batterycan result in electrical shock. The following precautions should beobserved when working on batteries.–Remove watches, rings or other metal objects.–Use tool with insulated handles.–Wear rubber gloves and boots.–Do not lay tools or metal parts on top of batteries.–Disconnect the charging source prior to connecting or disconnectingbattery terminals.–Determine if battery is inadvertently grounded. If inadvertentlygrounded, remove source from ground. Contact with any part of agrounded battery can result in electrical shock. The likelihood of suchshock can be reduced if such grounds are removed during installationand maintenance.• CAUTION: The UPS contains internal batteries and may present ashock hazard even when disconnected from AC power.• CAUTION: Battery circuit is not isolated from AC input, hazardousvoltage may exist between battery terminals and ground. Test beforetouching.• CAUTION: Failed batteries can reach temperatures that exceed theburn thresholds for touchable surfaces.Radio Frequency WarningThis is a category C2 UPS product. In a residential environment, this product may cause radio interference, in which case the user may be required to take additional measures.Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA3Package Contents4Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VARear Panel FeaturesEasy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA5Front Panel FeaturesFront panel display6Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VAEasy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA7Start UpConnect batteryThe battery connector is located on the rear panel. Refer to “Rear Panel Features” on page 5 for details.NOTE : Connect prior to operation.Disconnect prior to transportation. Turn off the UPS and remove input power cable before disconnecting the battery connector. Connect equipment and input power to Easy UPS1. Connect equipment to the battery backup outlets of Easy UPS.2. Plug the Easy UPS power cord directly into a wall outlet, not into asurge protector or power strip.3. Press the POWER ON /OFF button to turn on the unit.NOTE : The Easy UPS should charge the battery for at least 8 hours to ensure sufficient runtime.4. Press the POWER ON /OFF button in 1~3 seconds. Confirm that theEasy UPS is on and is providing power to outlets.Cold start the UPSUse the cold start feature to supply power to connected equipment from the UPS batteries when the UPS is off and there is no power utility.• Press the POWER ON /OFF button. The display panel will illuminate.• Press the POWER ON /OFF button again to supply battery power to the connected equipment.Connect and install management softwareEasy UPS is provided with management software forunattended operating system shutdown, UPSmonitoring, and UPS settings.Refer to for more information. SpecificationsModel SMV750I-MSX SMV1000I-MSXSMV1500AI-MSXSMV2000AI-MSXSMV3000AI-MSXInput SpecificationsVoltage220/230/240 V ACVoltage range165-290 V AC ± 5 V AC165-295 V AC ± 8 V AC Fuse8 A8 A12 A20 A25 A Frequency range45-65 Hz (auto sensing) ±1 HzOutput specificationsUPS capacity (total)750 V A/525 W1000 VA/700 W1500 V A/1050 W2000 V A/1400 W3000 V A/2100 WRated voltage230 VAC Transfer time Typical 2-6 ms, 12 ms max. Waveform Pure Sinewave BatteryType (Maintenance-free Lead acid)12 V /7 Ah x 212 V /7 Ah x 212 V /10 Ah x 212 V /7 Ah x 412 V /9 Ah x 4Charging time4-6 hours recover to 90% capacity PhysicalDimension (D x W x H)410 x 160 x 220 mm(16.1 x 6.3 x 8.7 in)455 x 180 x 240 mm(18 x 7.1 x 9.4 in)Weight withoutpackage13.6 kg17.8 kg23.5 kg25.2 kgPackaging Dimension (D x W x H)508 x 272 x 339 mm(20 x 10.8 x 13.3 in)604 x 319 x 414 mm(23.8 x 12.5 x 163 in)Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA8Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA 9Audible Indicators and Status IconsTroubleshootingUse the table below to solve minor installation and operation problems.ModelSMV 750I-MSX SMV 1000I-MSX SMV 1500AI-MSX SMV 2000AI-MSX SMV 3000AI-MSX Weight with package 16.6 kg20.75 kg26.9 kg28.9 kgEnvironment Operating,temperature and humidity 0-90% RH @ 0-40 °C (non-condensing)0-95% RH @ 0-40 °C (non-condensing)Noise level < 45 dB International Protection CodeIP20Problem and/or Possible Cause SolutionEasy UPS will not turn on The Easy UPS is not turned on.Press the POWER ON /OFF button to turn on the Easy UPS.The Easy UPS is not connected to AC power, there is no AC power available at the wall outlet, or the AC power is experiencing a brownout or over voltage condition.Be sure that the power cord is securely connected to the utility power outlet and AC power isavailable at the utility power outlet. Check that the wall outlet is switched on or input fuse works properly.10Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VAServiceIf the unit requires service, do not return it to the dealer. Follow these steps:1. Review the Troubleshooting section of the manual to eliminate commonproblems.2. If the problem persists, contact APC by Schneider Electric CustomerSupport.a.Note the model number and serial number and the date of purchase.The model and serial numbers are located on the rear panel of theunit.b.Call APC by Schneider Electric Customer Support and a technicianwill attempt to solve the problem over the phone. If this is notpossible, the technician will issue a Returned Material AuthorizationNumber (RMA#).c.If the unit is under warranty, the repairs are free.d.Service procedures and returns may vary internationally. Refer to theAPC by Schneider Electric website for country specific instructions.3. Pack the unit in the original packaging whenever possible to avoiddamage in transit. Never use foam beads for packaging. Damagesustained in transit is not covered under warranty.4. Always DISCONNECT THE UPS BATTERIES before shipping.The United States Department of Transportation (DOT), and theInternational Air Transport Association (IATA) regulations requirethat UPS batteries be disconnected before shipping. The internalbatteries may remain in the UPS.5. Write the RMA# provided by Customer Support on the outside of thepackage.6. Return the unit by insured, pre-paid carrier to the address provided byCustomer Support.Easy UPS SMV Series 750, 1000, 1500, 2000, 3000 VA11© 2020 APC by Schneider Electric. APC, the APC logo, and Easy UPS areowned by Schneider Electric Industries S.A.S., or their affiliated companies. All other trademarks are property of their respective owners.EN 990-9144811/2020WarrantyRegister your product on-line The standard warranty is two (2) years from the date of purchase. SEITstandard procedure is to replace the original unit with a factoryreconditioned unit. Customers who must have the original unit back due to the assignment of asset tags and set depreciation schedules must declaresuch a need at first contact with an SEIT Technical Support representative.SEIT will ship the replacement unit once the defective unit has beenreceived by the repair department, or cross-ship upon the receipt of a valid credit card number. The customer pays for shipping the unit to SEIT. SEIT pays ground freight transportation costs to ship the replacement unit to the customer.APC by Schneider Electric IT Customer SupportWorldwideFor country specific customer support, go to the APC by Schneider Electric website, .。