Comparison of ultrasound-guided thrombin injection and compression repair in treatment of iatrogenic femoral arterial pseudoaneurysms

Objective:To retrospectively compare the efficacy and safety of ultrasound-guided thrombin injection (UGTI) with ultrasound-guided compression repair (UGCR) in patients with postcatheter-izational femoral arterial pseudoaneurysms (PSA). Methods: Thirty patients of this iatrogenic PSA [8 males, 22 females, average age (66. 5±5. 2) years] in our institution from 1997 to 2004 were retrospectively analyzed. Among them, 11 patients were treated with UGCR, 2 under continuous ultrasonographic (US) guidance and 9 under the guidance of femoral arterial bruit auscultation and dorsalis pedis artery palpation. Because UGCR was failed in 5 patients, consecutively 24 patients were treated with UGTI. Swine thrombin solution at a concentration of 200 U/ml was injected percutaneously using 22-25 gauge needles under color Doppler US. Demographics, clinical variables, pseudoaneurysm characteristics, and results of the 2 groups were compared by using Fisher's exact test and Student's t test. Results: The initial success rate of UGCR was 36. 4% (4/11) and the overall success rate was 45. 5% (5/11). Ten of 11 patients suffered from local pain during the compression, but there was no any complication in UGTI group. The average dose of injected thrombin was (180 + 82) U for PSA of a single loculus and (315±150) U for multiloculated PSA. The initial success rate of UGTI was 89.5% (17/19) and the overall success rate was 100% (24/24). Conclusion;UGTI offers a safe, quick and effective means of definitively treating femoral pseudoaneurysms and seems superior to UGCR. The amount of thrombin applied on our people seems smaller compared with others' work.     

缝隙连接在血管内皮细胞和平滑肌细胞间信号传递的研究进展

血管内皮细胞和平滑肌细胞间的相互调节是血管生理和病理学研究的重要内容之一.近年研究发现,缝隙连接在血管内皮细胞与平滑肌细胞间相互调节过程中起着重要作用.本文仅对缝隙连接在血管内皮和平滑肌细胞之间信号传递的研究进展作一综述.