QT及JT离散度对心性猝死预测价值的探讨

测定３２例心性猝死和３０例非猝死性心性死亡病人入院后的首次心电图ＱＴ离散度（ＱＴｄ）和ＪＴ离散度（ＪＴｄ），产以３０例存活病人作对照，结果显示：（１）心性猝死组ＱＴｄ，ＪＴｄ较存活组和非猝死性心性死亡组显著增大（前者Ｐ均〈０．０１，后者Ｐ均〈０．０５，而非猝死性心性死亡组与存活组ＱＴｄ，ＪＴｄ比较差异均无统计学意义。（２）在心性猝死病人中，死亡直接原因为快速室性心律失常组（２３例）的ＱＴｄ，ＪＴｄ     

急性心肌梗死早期QT间期JT间期离散度与近期严重心律失常的关系

目的 :探讨AMI早期QT间期离散度、JT间期离散度与严重心律失常的关系。方法 :测定 46例AMI患者心梗发生后第 3d的QT间期离散度 (QTd)和JT间期离度 (JTd)。并与30例正常人的对照组比较。结果 :AMI组QTd、JTd、QTcd较对照组显著增大 (P <0 0 1 )。住院期间严重室性心律失常发生组 (1 8例 )的QTd、JTd、QTcd较无严重室性心律失常组 (2 8例 )明显增大 (P <0 0 1 ) ,且发生室颤的 9例患者QTd、JTd、QTcd比无室颤的明显增大 (P <0 0 1 )。结论 :早期测定AMI患者QTd、JTd、QTcd对患者近期严重室性心律失常的发生有预测意义     

急性心肌梗死早期恶性心律失常与QT JT间期离散度关系的临床分析

目的 探讨急性心肌梗死（ＡＭＩ）ＱＴ间期离散度（ＱＴＤ）、ＪＴ间期离散度（ＪＴＤ）与早期恶性心律失常的关系。方法 测量并计算ＡＭＩ体表心电图ＱＴＤ、ＪＴＤ,并与５０例正常人作对照。结果 ＡＭＩ发生恶性心律失常组ＱＴＤ,ＪＴＤ均显著大于对照组（Ｐ〉０．０１）;前壁心面梗死组的ＱＴＤ、ＪＩＴＤ明显大于下壁心肌梗死组（Ｐ〈０．０５）。结论 ＱＴＤ、ＪＴＤ增加是ＡＭＩ早期发生恶性心律失常的重要指标之一。     

The effects of unimanual and bimanual massed practice on upper limb function in adults with cervical spinal cord injury: a systematic review

BackgroundIndividuals with cervical spinal cord injury (cSCI) have identified improving upper limb function as their most important rehabilitation goal. Unimanual massed practice (UMP) and bimanual massed practice (BMP) may help achieve this.ObjectivesTo evaluate and compare the effects of UMP and BMP on upper limb function in adults with cSCI.Data sourcesCochrane Central Register of Controlled Trials, PubMed, CINAHL, Web of Science and PEDro until April 2016.Study selectionStudies investigating the effects of UMP and/or BMP on upper limb function in adults with cSCI.Data extraction and synthesisData was extracted using a standardised form. Studies were appraised using a modified version of the Cochrane risk of bias tool. The findings were qualitatively synthesised.ResultsFive randomised controlled trials and two case studies were included. Six studies included UMP, three included BMP, and two compared these approaches. Overall the studies reported that UMP and BMP improved upper limb function, particularly when combined with electrical stimulation, with no clear differences between UMP and BMP. These findings should be interpreted with caution however, as six studies presented a high or unclear risk of bias for all functional upper limb outcome measures included, and the remaining study was a small pilot study with no control group.ConclusionAlthough the findings of the included studies support the use of UMP and BMP in adults with cSCI, only seven studies, all with significant limitations, were included; hence robust conclusions cannot be drawn and further research is warranted.PROSPERO registration number: CRD42016037365     

老年急性心肌梗塞QT及JT离散度与室性心律失常的关系

目的观察急性心肌梗塞（AMI）患者早期心电图QT离散度（QTd）及JT离散度（JTd）的变化，以探讨老年AMI患者QTd、JTd与室性心律失常的关系。方法测量老年组AMI患者109例和非老年组AMI患者34例心电图的QT、JT间期，计算其QTd及JTd。结果（1）QTd及JTd在老年组分别为64．77±21．67ms、60．00±22．38ms，非老年组为55．59±11．33ms、49．41±14．99ms，两组比较差异极为显著（P＜0．01）。（2）QTd、JTd在老年组发生室性心律失常分别为78．89±24．24ms、76．00±24．81ms，在非老年组发生室性心律失常分别为60．76±14．41ms、61．54±14．63ms，两组比较差异显著（P＜0．05）。（3）老年组QTd、JTd≥100ms者全部发生恶性室性心律失常，显著高于QTD、JTd＜100ms者（P＜0．01）。结论老年AMI患者QTd、JTd值越大，室性心律失常的发生率越高，QTd、JTd可作为预测室性心律失常发生的一项重要指标。     

Hyperparathyroidism–jaw tumor syndrome: a report of three large kindred

Background  Hyperparathyroidism–jaw tumor syndrome (HPT–JT) is a rare autosomal disease caused by inactivating germ-line mutations of HRPT2 gene, with subsequent loss of Parafibromin expression. It is characterized by familial HPT, ossifying jaw tumors, and other associated neoplasms. Methods  Clinical, histopathological, and genetic features of three large Italian unrelated HPT–JT kindred were assessed. Results  Three different germ-line HRPT2 inactivating mutations were identified. Seventeen affected members and six healthy mutation carriers were found. HPT was diagnosed in virtually all affected patients, at a median age of 36.3 years (range 11–71). In all cases, a single parathyroid involvement was found at surgery, although a metachronous multiglandular involvement causing recurrence after selective parathyroidectomy occurred in 17.6% of cases, after a mean disease-free interval of 13.7 years (range 5–27). Parathyroid carcinoma, atypical parathyroid adenoma, and jaw tumor occurred in one case; uterine involvement in 61.5% of women; other associated neoplasms were thyroid carcinoma (two cases) and renal and colon carcinoma (one case). Immunohistochemistry confirmed the loss of Parafibromin as the distinctive feature of the disease both in parathyroid and uterine tumors. Conclusions  HPT–JT has a frequent single-gland parathyroid involvement and a relatively increased risk of parathyroid carcinoma. The penetrance of the disease is high but incomplete. Regardless of the denomination of the syndrome, jaw tumors occur rarely, while uterine involvement is frequently present. Selective parathyroidectomy may be an effective strategy, but a prolonged follow-up is required because of the risk of recurrences and malignancies. A systematic investigation is also required because of associated malignancies. Best of Endocrine Surgery in Europe 2009     

冠状动脉旁路移植术对QT、QTc、JT离散度的影响

目的　探讨冠状动脉旁路移植术 (Coronary artery bypass graftings,CABG)对冠心病患者 QT间期离散度(QTd)、QTc离散度 (QTcd)及 JT离散度 (JTd)的影响。方法　测定 33例 CABG术前和术后的 QTd为 CABG组 ,并以 33例确诊为冠心病行冠状动脉造影 ,而暂未行 CABG手术和装支架的病人作对照组。结果　 1CABG前和对照组比较 QTd无显著增大 (P>0 .0 5 )。 2 CABG组术后病人的 QTd、QTcd及 JTd显著减小 (P<0 .0 5 )。 3对照组冠状动脉造影术后 QTd、QTcd及 JTd与术前比较 ,无明显改变 (P>0 .0 5 )。结论　 CABG能使 QTd、QTcd及 JTd减小     

不同剂量卡维地洛对急性心肌梗死患者QT离散度、JT离散度及心率变异性的影响

目的研究不同剂量卡维地洛对急性心肌梗死患者的QT离散度(QTd)、JT离散度(JTd)及心率变异性(HRV)的影响。方法根据卡维地洛用量将120例患者随机分为小剂量组(3.25⁶.25 mg,每日2次,n=68)和大剂量组(12.56.25 mg,每日2次,n=68)和大剂量组(12.5²5.0 mg,每日2次,n=52),疗程均3个月。治疗前后患者均接受长程心电图检查,记录QTd、JTd、HRV时域(SDNN、SDANN、rMSSD)、频域指标(LF、HF、LF/HF)。患者随访6个月。结果与治疗前比较,治疗3个月后,2组QTd、JTd、心率变异性的时域及频域指标均明显改善,且大剂量组较小剂量组更为明显(P<0.05,P<0.01)。6个月内2组不良心血管事件发生率比较差异无统计学意义(P>0.05)。结论大剂量卡维地洛能进一步减小急性心肌梗死患者QTd、JTd及改善HRV,但并不降低不良心血管事件发生率。