Hoppe Hanno, Segall Jocelyn A, Liem Timothy K, Landry Gregory J, Kaufman John A
Dotter Interventional Institute, Oregon Health & Science University, L-605, 3181 SW Sam Jackson Park Rd., Portland, OR 97239-3098, USA.
Eur Radiol. 2008 May;18(5):957-65. doi: 10.1007/s00330-007-0831-7. Epub 2007 Dec 20.
The purpose of this single-center study was to report our initial experience with an implantable remote pressure sensor for aneurysm sac pressure measurement in patients post-endovascular aneurysm repair (EVAR) including short-term follow-up. A pressure sensor (EndoSure, Atlanta, GA) was implanted in 12 patients treated with different commercially available aortic endografts for EVAR. Pressure was read pre- and post-EVAR in the operating room. One-month follow-up (30 days+/-6 days) was performed including sac pressure readings and IV contrast CT scans. Variables were compared using the paired Student's t test. An intraprocedure type-I endoleak and a type-III endoleak were successfully treated resulting in decreasing sac pressures. In all patients, post-EVAR systolic sac pressure decreased by an average of 33% (P <or= 0.005) compared to pre-EVAR measurements. One-month follow-up demonstrated a 47% decrease in systolic sac pressure (P <or= 0.05). On follow-up CT scans, the average maximum aneurysm diameter pre-EVAR was 6.3+/-1.6 cm and post-EVAR 6.0+/-1.7 cm (P<or=0.05). The diameter of the aneurysm sac was larger only in one patient with a type-III endoleak. Remote sac pressure measurement may provide important information in addition to imaging and may help to reduce the number of follow-up CT scans.
这项单中心研究的目的是报告我们在接受血管内动脉瘤修复术（EVAR）的患者中使用可植入式远程压力传感器测量瘤囊压力的初步经验，包括短期随访。12例接受不同市售主动脉腔内移植物进行EVAR治疗的患者植入了压力传感器（EndoSure，佐治亚州亚特兰大）。在手术室于EVAR术前和术后读取压力值。进行了为期1个月的随访（30天±6天），包括瘤囊压力读数和静脉注射造影剂CT扫描。使用配对t检验比较变量。成功治疗了1例术中I型内漏和1例III型内漏，导致瘤囊压力降低。所有患者中，与EVAR术前测量值相比，术后瘤囊收缩压平均降低33%（P≤0.005）。1个月随访显示收缩期瘤囊压力降低47%（P≤0.05）。随访CT扫描显示，EVAR术前动脉瘤平均最大直径为6.3±1.6 cm，术后为6.0±1.7 cm（P≤0.05）。仅1例III型内漏患者的瘤囊直径增大。除成像外，远程瘤囊压力测量可能提供重要信息，并可能有助于减少随访CT扫描的次数。
