简介:目的观察Nucleus24CA型人工耳蜗植入后电极阻抗、行为反应阈值(T-level,T级)及最大舒适级(C-level,C级)的变化规律,分析其内在联系,探讨其对术后调机的指导意义。方法对81例植入Nucleus24CA型人工耳蜗患儿,分别在术中、术后1、2、6个月进行电极阻抗阈值测试,收集术后对应T、C值,并对其变化规律及相关性进行统计学分析。结果电极阻抗值术中检测最低,术后1月开机最高,此后逐渐减低(P〈0.01);自蜗顶至蜗底各通道间电极阻抗值无显著差异(P〉0.05)。各电极通道T值、C值随术后时间延长逐渐增高(P〈0.05),并与电极阻抗值呈线性相关。结论测定电极阻抗值是评估人工耳蜗刺激电极状态的有效手段;术后2月应同时调试T值及C值,此后则应对C值进行重点调试。
简介:摘要目的探讨丹参川芎嗪治疗老年舒张性心衰(Diastolicheartfailure)的有效性和安全性。方法将100例老年舒张性心衰患者随机分为对照组(常规治疗组)50例,治疗组(联合丹参川芎嗪组)50例,两组均应用舒张性心力衰竭常规治疗。疗程15天,观察治疗前后临床症状及心脏彩超,检查血清N末端脑利钠肽(NT-proBNP)、血脂等。结果治疗组心力衰竭症状缓解优于对照组,两组间比较有显著性差异(P<0.05)。治疗组中,血脂降低幅度较常规治疗组大,差异有统计学意义(P<0.05);两组经治疗后NT-proBNP与治疗前相比均降低,两组治疗后相比无显著性差异;两组治疗后E/A均有改善。结论丹参川芎嗪治疗老年舒张性心衰疗效好,安全可靠。
简介:ObjectivesToinvestigatetheexpressionofhistamineH1receptors(H1R)inthevestibularnucleusofbrainsteminratsandtheroleofH1Rinmotionsickness(MS).MethodsAtotalof24healthySprague-Dawleyratsweredividedrandomlyintofourgroups(n=6each)whichdeterminediftheanimalswouldreceiveinductionofMSordrug(promethazine)treatment:MS(-)/Drug(-);MS(+)/Drug(-);MS(-)/Drug(+at0.25mg);andMS(+)/Drug(+).MSwasinducedbycomplexmotionstimulationandtheconditionedtasteaversionwasusedasabehavioralindicatorofMS.Thevolumeof0.15%sodiumsaccharinsolution(SS)intakewithin45minutesaftermotionstimulationwasmeasured.H1Rinthevestibularnucleuswasexaminedbyimmunofluorescencestaining.TheexpressionofH1Rproteininbrainstemtissueatvestibularnucleuslevelwasdetectedbywesternblot.ResultsThemeanSSintakevolumeintheMS(+)/Drug(-)group(8.8ml)wassignificantlylessthanthatoftheMS(-)/Drug(-)group(15.1ml)(P<0.01).ThemeanSSintakevolumeoftheMS(-)/Drug(+)group(14.8ml)wassimilartothatoftheMS(-)/Drug(-)group.ThemeanSSintakevolume(9.6ml)oftheMS(+)/Drug(+)groupwasmorethanthatoftheMS(+)/Drug(-)group(P<0.01),butlessthanthatoftheMS(-)/Drug(-)grouporMS(-)/Drug(+)group(P<0.01).ImmunofluorescencestainingshowedpositiveexpressionofH1Rinthevestibularnucleusofbrainstemandtheexpressionwasenhancedbymotionstimulation.WesternblotanalysisshowedthatH1Rproteinexpressedinthebrainstemtissueatvestibularnucleuslevelandtheexpressionalsoincreasedsignificantlyaftermotionstimulation.TheMS-inducedincreaseofH1Rwasnotaffectedsignificantlybypromethazine.ConclusionsH1RsexistinthevestibularnucleusinratsandH1Rexpressionisup-regulatedbymotionstimulation,butnotaffectedbypromethazine.ThefindingsindicatethatthehistaminergicsystemisinvolvedinMS.Promethazine,asanH1Rblocker,mayplayitsanti-MSrolebycompetingthebindingsiteon
简介:摘要目的对46例脑出血患者院外发生压疮的危险因素进行分析,并探讨干预对策。方法运用家庭访视方法,对出院后发生压疮的脑出血患者,采用压疮高危因素量化评价表进行评价分析,查找危险因素。结果13项危险因素中排序前6的为体位受限、年龄>70岁、大小便失禁、营养不良、意识障碍、运动障碍,为脑出血患者发生院外压疮的主要危险因素。结论加强对脑出血患者压疮危险因素评估,对患者及家庭照顾者进行健康教育,改善患者自身因素,提供社会支持等是预防脑出血患者发生院外压疮的有效措施。