经内镜微探头超声检查对结直肠黏膜下肿瘤的诊断价值

目的 探讨经内镜微探头超声检查对结直肠黏膜中肿瘤的诊断价值。方法 应用微探头对结直肠黏膜下肿瘤进行肠镜下超声检查。结果 28例结直肠黏膜下肿瘤中，平滑肌瘤12例，脂肪瘤7例，直肠类癌3例，淋巴管瘤3例。恶性淋巴瘤1例，肠气囊肿症1例和直肠腔外黏液囊肿1例，其中1例较大的平滑肌瘤误诊为平滑肌肉瘤。结论 经内镜微探头超声检查可以明确结直肠黏膜下肿瘤的大小，肠壁起源和边界，对黏膜下肿瘤的诊断有较高的准确率，同时能与控外压迫性病变相鉴别，术前经内镜微探头超声检查可以为结直肠黏膜下肿瘤患选择合适的治疗方案提供指导。     

胎盘早期剥离13例分析

目的探讨胎盘早期剥离(胎盘早剥)的产前诊断和处理。方法对我院近10年发生的13例胎盘早剥作回顾性分析。结果妊高征及慢性高血压病占本组病因的46．2％。本组围产儿死亡率为23．08％，孕产妇死亡率为0。子宫卒中发生率46．15％，产后出血30．77％，DIC 7．70％。阴道出血、腹痛、胎心异常或消失、血性羊水为主要临床表现。产前诊断率为46．15％，B超检出率为60％。结论胎盘早剥的诊断需结合患者临床表现、发病诱因、B超检查结果全面考虑，确诊后应尽快终止妊娠。     

椎动脉型颈椎病的彩色多普勒超声诊断

目的 :观察椎动脉型颈椎病的高频彩色多普勒表现和血流动力学变化。方法 :应用彩色多普勒超声诊断仪 (高频探头 ,频率 7～ 10MHz)检测 138例椎动脉型颈椎病患者 (颈椎病组 )的椎动脉 (VH)内径 (D)、血流速度 (V)和血流量 (Q)、阻力指数 (RI)和搏动指数 (PI) ,观察其形态结构、并与 10 0例 (对照组 )进行对照分析。结果 :颈椎病组VA的V(除平均血流速度外 )、D ,Q ,RI,PI与对照组比较差异有显著性 (P <0 0 1)。结论 :高频彩超显示的椎动脉形态和血流参数变化为临床评价椎动脉型颈椎病治疗效果提供了有价值的依据     

急性缺氧对飞行员胃液排空功能的影响

为探讨急性缺氧对飞行人员胃液体排空功能的影响，在常压下吸入不同浓度氧（17％、16％、14％、12％、10．5％及9％）的低氧混合气体30min，采用B型超声波在实验前后分别测量了64名男性飞行员的胃液体排空功能。结果表明，吸入17％低氧混合气胃排空延迟，但经统计学处理无显著性差异（P＞0．05），吸入16％以下的低氧混合气后胃排空延迟，经统计学处理有显著性差异（P＜O．01），且随着缺氧程度加重，胃液体排空时间延长更加明显。提示当发生高空缺氧时，应考虑到缺氧对胃排空有抑制作用这一因素。     

[I]Vasoactive intestinal peptide binding in rodent suprachiasmatic nucleus: Developmental and circadian studies

The suprachiasmatic nucleus (SCN) of rat and hamster have been studied extensively and shown to play critical roles in circadian rhythmicity. [¹²⁵I]Vasoactive intestinal peptide (VIP) binding levels are high in the rat SCN, suggesting that VIP receptors may be an important component of SCN function. In contrast to previously demonstrated diurnal variations in VIP immunoreactivity and VIP mRNA, the present study found [¹²⁵I]VIP binding to be stable across the light-dark cycle in both rat and hamster SCN. High [¹²⁵I]VIP labeling appeared to be coextensive with the rat SCN but extended somewhat beyond the cytoarchitectonic boundaries of the hamster SCN. Binding density in hamster SCN was slightly higher than in rat. In the developing rat SCN, [¹²⁵I]VIP binding levels distinguished the SCN on embryonic day 18, and appeared to increase to postnatal day 10 before declining to adult levels. The early presence of [¹²⁵I]VIP binding suggests possible involvement of VIP receptors in fetal entrainment of circadian rhythms.     

Neurolysis of celiac plexus and splanchnic nerve under ultrasonographic guidance

Key words  intractable pain - celiac plexus neurolysis - ultrasonography     

PCR扩增孕妇外周血DNA进行胎儿性别诊断

采用密度梯度离心技术对40例孕妇外用血中胎儿细胞进行富集,并用PCR技术扩增了Y染色体特异重复序列,以产前基因诊断胎儿性别,结果38例胎儿性别诊断准确,证明此技术可作为无创伤性方法用于X连锁遗传病的产前诊断.     

The distribution of fetal nuchal translucency thickness in normal Korean fetuses

The aim of present study was to establish normative data for the distribution of nuchal translucency (NT) thickness in normal Korean fetuses. The data were collected from pregnant women with singleton pregnancies in whom fetal ultrasound was performed and the fetal NT thickness was measured between 11 and 14 weeks of gestation. Among them, a total of 2,577 fetuses with a known normal outcome were included in this study. The distribution of multiple of median (MoM) values of the NT thickness with crown-rump length (CRL) in 10-mm intervals and the 95th percentile of MoM were calculated with the linear regression method. The present study showed that NT measurements increase with increasing CRL and a false positive rate increases with increasing gestational age. Therefore, a fixed cut-off point through the first trimester was not appropriate and each NT measurement should be examined according to the gestational age. The present study offers normative data of the fetal NT thickness in a Korean population, which can be used as reference for screening chromosomal aberrations or other congenital abnormalities in the first trimester.     

69,XXY伴严重生长迟缓及眼球突出病例的产前诊断

目的分析孕中期血清筛查数据和胎儿彩色多普勒与染色体异常之间的关系。方法对一孕中期血清产前筛查18三体风险1:10,血清Free-hCGβ异常减低(值为1.29ng/ml即0.08MOM),胎儿系统结构检查提示胎儿小于孕周,头腹围比(1.63)大于正常(1.25),上唇连续性中断延至鼻底的孕妇进行羊膜腔穿刺,抽取羊水进行细胞遗传学检查。结果羊水细胞染色体核型:69,XXY。结论中孕期妇女血清Free-hCGβ异常减低和胎儿头胸围发育不同步、胎儿唇腭裂提示胎儿染色体畸变可能,血清和超声联合筛查有助于染色体疾病的检出。