肺动脉

Objective To investigate the applicable value of multislice spiral CT in the diagnosis of acute pulmonary thromboembolism.

目的 探讨多层螺旋CT对诊断急性肺动脉诊断的临床应用价值。

Objective To report the experience in diagnosis and surgincal treatment of pulmonary thromboembolism.

目的 探讨肺动脉血栓栓塞的诊断和治疗。

Objective To investigate the applicable value of multislice spiral CT in the diagnosis of acute pulmonary thromboembolism.

呼吸系统论文：目的探讨多层螺旋CT对诊断急性肺动脉诊断的临床应用价值。

Methods 4 clinical study was mode in 10 patients who underwent pulmonary thromboembolism and surgical procedure.

总结10例肺动脉栓塞剥脱术病例的临床资料。

A retrospective multicentre study was conducted in 40 patients (38 males; age 68+/-9 yrs; 39 smokers) with combined pulmonary fibrosis and emphysema, and pulmonary hypertension at right heart catheterisation.

回顾性分析多中心研究的40例（男性38例，年龄68 +/-9岁；吸烟者39例）合并肺间质纤维化和肺气肿，右心导管插入术测量肺动脉高压。

Patients with combined pulmonary fibrosis and emphysema syndrome and pulmonary hypertension confirmed by right heart catheterisation have a dismal prognosis despite moderately altered lung volumes and flows and moderately severe haemodynamic parameters.

尽管适度改变肺容积、血流量、血流动力学参数，合并肺间质纤维化和肺气肿综合征的肺动脉高压患者预后仍较差。

Therefore, the present authors conclude that fenfluramine exposure characterises a potent trigger for pulmonary arterial hypertension without influencing its clinical course.

因此，芬氟拉明的服用仅是肺动脉高压潜在的触发因素，不会影响临床进程。

These results suggest that ONOO- causes weak relaxation in pulmonary artery, which is down regulated by endothelium and is of tachyphylaxis.

结果表明， ONOO-对肺动脉的舒张作用较弱，此作用受到内皮细胞的抑制性调节并有快速去敏性。

The results showed that (1) all the arteries tested had tachyphylaxis to peptidergic agonists;(2) the desensitization of the arteries tested to catecholamines was uneasy except BA;(3) the desensitizations to AⅡ, AVP and PE were homologous;(4) the endothelium-EDRF -cGMP pathway had no contribution to the tachyphylaxis of PA to AⅡ and AVP;(5) membrane receptor cycling (internaliation and re-insertion) contributed only in part to homologous desensitization;(6) there was no change in the function of voltage-dependent Ca〓 channel during desensitization to AⅡ and AVP;(7) some changes in G protein occurred during homologous desensitization;(8) the most surprising finding was that the caudal arterial smooth muscle of stroke-prone spontaneously hypertensive rat showed tachyphylaxis to α〓-adrenoceptor agonist PE, while the tachyphylaxis of pulmonary artery of SHR was not changed compared with that of Wistar rat.

脱敏是消除效应的一种有效方式。因此，研究不同血管对不同激动剂脱敏的差异及阐明脱敏的机制，有助于阐明血管活动个性化的机制。研究表明：血管对肽类激动剂的脱敏方式为快速脱敏，而对儿茶酚胺类激动剂不易脱敏；血管对肽类激动剂和儿茶酚胺类激动剂表现为同源脱敏；内皮-NO-cGMP通路不参与肺动脉对AⅡ和AVP的快速脱敏；用PAO抑制膜受体的内在化只能短暂抑制脱敏的发展，提示用膜受体数目的下调说不能完全解释同源脱敏；血管对AⅡ和AVP脱敏后VSMC细胞膜电压依赖性钙通道功能无改变；CA对AVP脱敏后GTPγS的量-效曲线下移，说明有G蛋白的变化，但这种变化并非G蛋白的亲和性改变；SHRsp之CA平滑肌对AⅡ和AVP的快速脱敏并未减弱，但对PE却表现为快速脱敏，这是我们首次发现的一个非常有趣的现象。

Objective To evaluate the value of acoustic densitometry in detecting myocardium damage of the left ventricle secondry to hypoxic pulmonary hypertension.

目的探讨声学密度定量技术定量评价缺氧肺动脉高压后左室心肌损害的应用价值。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。