title: Aortic aneurysm sac pressure measurements after endovascular repair using an implantable remote sensor: initial experience and short-term follow-up.
abstract: 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.
authors: Dotter Interventional Institute, Oregon Health & Science University, L-605, 3181 SW Sam Jackson Park Rd., Portland, OR 97239-3098, USA. hanno.hoppe@web.de
authors: Hanno
authors: H
authors: Hoppe
authors: Jocelyn A
authors: JA
authors: Segall
authors: Timothy K
authors: TK
authors: Liem
authors: Gregory J
authors: GJ
authors: Landry
authors: John A
authors: JA
authors: Kaufman
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001012:Aorta, Abdominal / Q000503:physiopathology*; D017544:Aortic Aneurysm, Abdominal / Q000503:physiopathology* / Q000628:therapy*; D001794:Blood Pressure; D018660:Blood Pressure Monitoring, Ambulatory / Q000295:instrumentation*; D019917:Blood Vessel Prosthesis Implantation; D004567:Electrodes, Implanted; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D015607:Stents; D014160:Transducers, Pressure; D016896:Treatment Outcome