In situ tissue regeneration using a warp-knitted fabric in the canine aorta and inferior vena cava†

2018 ◽  
Vol 54 (2) ◽  
pp. 318-327 ◽  
Author(s):  
Shintaro Nemoto ◽  
Hayato Konishi ◽  
Ryo Shimada ◽  
Tatsuya Suzuki ◽  
Takahiro Katsumata ◽  
...  
2000 ◽  
Vol 231 (4) ◽  
pp. 471-479 ◽  
Author(s):  
J. Peter A. Lodge ◽  
Basil J. Ammori ◽  
K. Rajendra Prasad ◽  
Mark C. Bellamy

Author(s):  
Ingrid Marjolein Bistervels ◽  
Abby E. Geerlings ◽  
Peter I. Bonta ◽  
Wessel Ganzevoort ◽  
IJsbrand A.J. Zijlstra ◽  
...  

Background: Patients with an inferior vena cava (IVC) filter that remains in situ encounter a lifelong increased risk of deep vein thrombosis and IVC filter complications including fracture, perforation and IVC filter thrombotic occlusion. Data on the safety of becoming pregnant with an in situ IVC filter are scarce. Objective: To evaluate the risk of complications of in situ IVC filters during pregnancy. Methods: We performed a retrospective cohort study of pregnant patients with an in situ IVC filter from a tertiary center between 2000 and 2020. We collected data on complications of IVC filters and pregnancy outcomes. Additionally, we performed a systematic literature search in MEDLINE, Embase and grey literature. Findings: We identified seven pregnancies in four patients with in situ IVC filters with a mean time since IVC filter insertion of 3 years (range 1-8). No complications of IVC filter occurred during pregnancy. Review of literature yielded five studies including 13 pregnancies in nine patients. In one pregnancy a pre-existent, until then asymptomatic, chronic perforation of the vena cava wall by the IVC filter caused major bleeding and uterine trauma with fetal loss. Overall, the complication rate was 5%. Conclusion: It seems safe to become pregnant with an indwelling IVC filter that is intact and does not show signs of perforation, but due to the low number of cases no firm conclusions about safety of in situ IVC filters during pregnancy can be drawn. We suggest imaging prior to pregnancy to reveal asymptomatic IVC filter complications.


1998 ◽  
Vol 186 (6) ◽  
pp. 717-719 ◽  
Author(s):  
Ricardo Mondragón-Sánchez ◽  
Hugo Orellana ◽  
Rigoberto Bernal-Maldonado ◽  
Juan Manuel Ruı́z-Molina

PLoS ONE ◽  
2012 ◽  
Vol 7 (4) ◽  
pp. e35760 ◽  
Author(s):  
Goki Matsumura ◽  
Naotaka Nitta ◽  
Shojiro Matsuda ◽  
Yuki Sakamoto ◽  
Noriko Isayama ◽  
...  

1993 ◽  
Vol 264 (1) ◽  
pp. H97-H103 ◽  
Author(s):  
P. H. Chew ◽  
J. D. Humphrey ◽  
F. C. Yin

The purpose of this study was to determine in situ regional pericardial strains over a wide range of conditions. In five open-chest, anesthetized dogs we examined deformations from biplane cineradiographs of three sets of four 1-mm diameter steel beads glued to basal, midanterior, and apical regions of the pericardium during extremes of pericardial sac sizes (inferior vena caval occlusion, baseline, and tamponade). Finite deformation theory was used to determine the planar components of the Green's strains referenced to the completely unloaded, excised pericardium at the end of each experiment. From the Green's strains the principal components, EI and EII, and the principal direction of strain were determined. The first strain invariant, I1 = EI + EII, in the basal, anterior, and apical regions during caval occlusion (1.27, 0.73, and 0.67) did not differ significantly from those in the baseline state (1.43, 0.86, and 0.76) but increased significantly (P < 0.01) during tamponade to 1.54, 1.30, and 1.08, respectively. Using end systole during inferior vena cava occlusion as a reference, the directions of principal strain in each region during each condition were aligned parallel to the spine pointing toward the tail except at the base during tamponade when there was a 70 degree rotation toward the left limb. The in situ dog pericardium is considerably strained by the underlying heart even during inferior vena cava occlusion, suggesting that a completely unloaded state cannot be achieved in situ. The regional differences in the direction but not the value of principal strain suggest that there are either regional variations in loading or material properties.


2019 ◽  
Vol 70 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Ramin Hamidizadeh ◽  
David Liu ◽  
Faisal Khosa ◽  
John Chung ◽  
Darren Klass ◽  
...  

Purpose To conduct a retrospective review and quality assurance study of inferior vena cava (IVC) filter retrieval over a two-year period at a tertiary care centre. Methods Patients who underwent IVC filter placement or retrieval over a two-year period were identified. Medical records were reviewed for patient characteristics, filter indication, time to filter retrieval, and complications. Results IVC filters were placed in 229 patients between January 1, 2015 and December 31, 2016. 113 retrievals were attempted and 101 filters were successfully retrieved (89.4%). Median time to first retrieval attempt was 48 days (range of 5–728). Seventy-one patients died in the interval after filter insertion before a retrieval attempt at a median time of 27 days (range of 3–430). In 17 patients, retrieval was complicated by or delayed because of penetration of IVC wall (n = 6), large thrombus burden trapped by filter (n = 5), filter tilt or migration (n = 3), and unclear reasons (n = 3). Time-to-first unsuccessful retrieval attempt was 141 days (median). Of all filters placed, 55.9% were never retrieved. Excluding deceased patients with in-situ filters (n = 71) and unsuccessful retrievals left in-situ as permanent filters (n = 5), there remains 52 patients (33%), with a median filter in-situ time of 488 days. Conclusion Our study indicates that as many as 33% of patients may have been lost to follow-up of their in-situ IVC filter. Considering widespread reports of long-term complications and the recent safety alert issued by Health Canada, it is evident that a unified strategy is needed to track patients post filter insertion.


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