简介：Q—T间期离散度(QTd)是指同一份心电图各导联最长与最短QT间期的差值，其大小反映各部分心室肌复极化不均的程度，QTd是1990年由Dag等首先提出，又称心肌复极离散度，对预测各种恶性心律失常、心源性猝死有重要临床价值。QTd增加是冠心病心律失常性死亡的独立危险因素，是评估急性心肌梗塞(AMI)近期预后的重要指标。

简介：胃内幽门螺杆菌(简称Hp)感染与消化疾病密切相关[1],故诊断Hp感染显得尤为重要.目前诊断Hp的方法很,多为侵人性(包括快速尿素酶、病理染色、细菌培养等),对患者具有一定创伤和痛苦;血清Hp-IgG抗体测定为非侵人性,但根除Hp后血清Hp抗体需长时间才能转阴,不宜疗效考核.无创伤性呼气试验可作为根除Hp前后诊断的金标准[2].我院于1998年5月至1999年5月,采用微量14C-尿素呼气法(简称14C-UBT)诊断Hp感染,同时予快速尿素酶法(RUT)、病理染色(W-S染色)对照,及追踪根除Hp后疗效检测.旨在观察14C-UBT法在诊断胃内Hp感染的临床价值.

简介：AIM:Toevaluatetheefficacyofthe14-dmoxifloxacinbasedtripletherapyforthesecond-lineeradicationofHelicobacterpylori(H.pylori)infection.METHODS:Between2011and2013,weconductedaretrospectivereviewofthemedicalrecordsof160patientswhohadexperiencedfailureoftheirfirst-lineprotonpumpinhibitor-basederadicationtherapyandsubsequentlyreceivedthemoxifloxacin-basedtripletherapyasasecond-lineeradicationtreatmentregimen.Thepatientswhoweretreatedwiththemoxifloxacinbasedtripletherapy(oral20mgrabeprazoleb.i.d.,1000mgamoxicillinb.i.d.,and400mgmoxifloxacinq.d.)for7dwereassignedtotheRAM-7group(n=79)whilethosewhotookthemfor14dayswereassignedtoRAM-14group(n=81).Theeradicationratesforbothgroupsweredeterminedbyintentionto-treat(ITT)andper-protocol(PP)analyses.ITTanalysiscomparedthetreatmentgroupsasoriginallyallocatedwhilethePPanalysisincludingonlythosepatientswhohadcompletedthetreatmentasoriginallyallocated.SuccessfuleradicationtherapyforH.pyloriinfectionwasdefinedasthedocumentationofanegative13C-ureabreathtest4wkaftertheendoftheeradicationtreatment.RESULTS:TheoverallITTeradicationratewas76.2%(122/160).ThefinalITTeradicationrateswere70.8%(56/79;95%CI:63.3%-77.1%)intheRAM-7groupand81.4%(66/81;95%CI:74.6%-88.3%)intheRAM-14group(P=0.034).TheoverallPPeradicationratewas84.1%(122/145),andthefinalPPeradicationrateswere77.7%(56/72;95%CI:70.2%-85.3%)intheRAM-7groupand90.4%(66/73;95%CI:82.8%-98.1%)intheRAM-14group(P=0.017).TheH.pylori-eradicationratesintheRAM-14groupweresignificantlyhighercomparedwiththatoftheRAM-7groupaccordingtoboththeITT(P=0.034)andthePPanalyses(P=0.017).Bothgroupsexhibitedgoodtreatmentcompliance(RAM-7/RAM-14group:100%/100%).Theadverseeventrateswere19.4%(14/72)and20.5%(15/73)intheRAM-7andRAM-14groups,respectively(P=0.441).Adverseeventsoccurredin14