scholarly journals A Novel Method to Adjust Saphenous Vein Graft Lengths Using 3D Printing Models

2020 ◽  
Vol 23 (2) ◽  
pp. E135-E139
Author(s):  
Hakan Gocer ◽  
Ahmet Baris Durukan ◽  
Osman Tunc ◽  
Erdinc Naseri ◽  
Ertugrul Ercan
Keyword(s):  
3D Printing ◽  
Saphenous Vein ◽  
Saphenous Vein Graft ◽  
Coronary Revascularization ◽  
Operation Time ◽  
Graft Patency ◽  
3D Print ◽  
Vein Grafts ◽  
Significant Difference ◽  
Graft Length

Background: The optimal length of saphenous vein grafts can be challenging in surgical coronary revascularization. It is the cornerstone for graft patency. In this study, we tried to demonstrate the value of 3D printing in determining optimal saphenous graft length. Methods: Sixteen patients who underwent bypass surgery with only vein grafts were examined. Patients' measurements of graft lengths were obtained from postoperative CT images and from both 3D print models manually with plastic tubes and via 3D print digital images of Mimics software during segmentation. Another measurement was done using the Fit Centerline tool in the analysis module of Mimics software after segmentation. These 3 measurements were compared. Results: There was a statistically significant difference between 3 measurement methods for each graft length (P < .001). Measurements of actual grafts were longer than measurements of 3D printed models manually and segmentation images from software were similar (P > .05). Conclusion: 3D printing models and their software may be used to determine optimal saphenous graft length and the anastomosis site to decrease operation time. It can be deducted from these results that 3D printing is a promising method for reducing operator dependent variables in adjusting graft size and finding optimal anastomosis sites. INTRODUCTION

scholarly journals Multiple Skin Bridging for No-Touch Saphenous-Vein Grafts Harvesting Can Reduce Wound Morbidity

2021 ◽  
Vol 24 (3) ◽  
pp. E496-E501
Author(s):  
Kang Zhou ◽  
Xiaoke Qi ◽  
Shijie Wei ◽  
Xinmin Zhou ◽  
Yuan Zhao
Keyword(s):  
Saphenous Vein ◽  
Patency Rate ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Graft Patency ◽  
Subjective Perception ◽  
Significant Difference ◽  
One Year ◽  
Bridging Technique ◽  
Graft Length

Background: Reducing the leg wound morbidity is crucial for the patients undergoing coronary artery bypass grafting (CABG) with great saphenous vein (SV) grafts harvested by no-touch (NT) technique. This study was to summarize the experience of skin bridging technique for reducing wound morbidity and the influence of it on one-year bypass graft patency. Methods: According to skin bridging or not, harvesting times, graft length, number of bleeding branches, postoperative subjective perception assessment scale (ASEPSIS) scores and one-year patency rate were analyzed. Results: From June 2018 to February 2019, 60 patients underwent CABG with SV grafts either with open-incision NT or skin bridging NT (30 in each group). There were no significant differences in age (71.4 ± 5.1 years vs. 68.9 ± 5.5 years) or graft length (23.3 ± 1.1 cm vs. 23.9 ± 1.3 cm) between the two groups. The bridging/NT group had a significantly longer harvest time (38.5 ± 4.9 min vs. 18.5 ± 2.6 min; P < 0.001) and a significantly greater number of bleeding branches (1.9 ± 1.2 vs. 0.8 ± 0.8; P < 0.001) than the open NT group. The open NT group had a significantly higher ASEPSIS score (23.8 ± 2.0 vs. 15.7 ± 2.6; P < 0.001). There was no significant difference in patency rate at one-year follow-up. Conclusion: Obtaining the SV by the combined NT/discontinuous skin bridging technique is a satisfactory method for patients who underwent CABG. This method has important clinical significance in reducing wound morbidity in the harvest of NT grafts.

No-Touch Sequential Saphenous Venous Harvesting Technique in Off-Pump Bypass Surgery: A Retrospective Study

2021 ◽  
Author(s):  
Xuejian Hou ◽  
Kui Zhang ◽  
Taoshuai Liu ◽  
Yang Li ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Saphenous Vein ◽  
Saphenous Vein Graft ◽  
Artery Bypass ◽  
Conventional Technique ◽  
Wound Complications ◽  
Off Pump ◽  
Vein Grafts ◽  
Harvesting Technique ◽  
Significant Difference ◽  
Pump Cabg

Abstract Background In the mid-1990s, the Swedish expert team proposed saphenous vein graft (SVG) harvesting with pedicle tissue. The short-term and long-term patency rates of the great saphenous vein obtained by the no-touch technique (NT) were higher than those obtained by the conventional technique (CON). In the past, NT technology was mainly used in on-pump coronary artery bypass grafting (CABG), and vein grafts were mostly single vein grafts. In this study, we retrospectively analysed the safety and effectiveness of sequential vein grafts using NT technology in off-pump CABG. Methods From 2017 to 2019, a total of 505 patients were included in the study. There were 150 patients in the NT group and 355 patients in the CON group. After applying propensity score matching (1:1 matching), 148 patients were included in each group. Baseline data, graft patency, postoperative complications, leg wound complications and 1-year major adverse cardiac and cerebrovascular events (MACCEs) were compared between the two groups. Results There was no significant difference in the patency rate of sequential venous grafts between the two groups one year after the operation either before (NT: 7.1% (10/141) vs CON: 11.5% (38/331), p = 0.149) or after matching (NT: 7.1% (10/140) vs CON: 7.3% (9/124), p = 0.971). There was no significant difference in the composite clinical endpoint between the two groups either before (NT: 3 (2.3%) vs CON: 9 (2.8%), p = 1.000) or after matching (NT: 3 (2.3%) vs CON: 3 (2.5%), p = 1.000). There were differences in leg wound complications between the two groups both before (NT: 9 (6.9%) vs CON: 6 (1.9%), p = 0.007) and after matching (NT: 9 (6.9%) vs CON: 2 (1.7%), p = 0.043). Conclusions The application of the NT technique in off-pump CABG with sequential vein grafts is safe and effective. Leg wound complications are more common with the NT technique than with the conventional technique.

scholarly journals Efficacy evaluation of three-dimensional printing assisted osteotomy guide plate in accurate osteotomy of adolescent cubitus varus deformity

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Yuan-Wei Zhang ◽  
Xin Xiao ◽  
Wen-Cheng Gao ◽  
Yan Xiao ◽  
Su-Li Zhang ◽  
...  
Keyword(s):  
3D Printing ◽  
Blood Loss ◽  
Three Dimensional ◽  
Operation Time ◽  
Varus Deformity ◽  
Conventional Group ◽  
Intraoperative Blood Loss ◽  
Cubitus Varus ◽  
Guide Plate ◽  
Significant Difference

Abstract Background This present study is aimed to retrospectively assess the efficacy of three-dimensional (3D) printing assisted osteotomy guide plate in accurate osteotomy of adolescent cubitus varus deformity. Material and methods Twenty-five patients (15 males and 10 females) with the cubitus varus deformity from June 2014 to December 2017 were included in this study and were enrolled into the conventional group (n = 11) and 3D printing group (n = 14) according to the different surgical approaches. The operation time, intraoperative blood loss, osteotomy degrees, osteotomy end union time, and postoperative complications between the two groups were observed and recorded. Results Compared with the conventional group, the 3D printing group has the advantages of shorter operation time, less intraoperative blood loss, higher rate of excellent correction, and higher rate of the parents’ excellent satisfaction with appearance after deformity correction (P < 0.001, P < 0.001, P = 0.019, P = 0.023). Nevertheless, no significant difference was presented in postoperative carrying angle of the deformed side and total complication rate between the two groups (P = 0.626, P = 0.371). Conclusions The operation assisted by 3D printing osteotomy guide plate to correct the adolescent cubitus varus deformity is feasible and effective, which might be an optional approach to promote the accurate osteotomy and optimize the efficacy.

scholarly journals Traditional versus mirror three-dimensional printing technology for isolated acetabular fractures: a retrospective study with a median follow-up of 25 months

2021 ◽  
Vol 49 (6) ◽  
pp. 030006052110285
Author(s):  
Kai Xiao ◽  
Bo Xu ◽  
Lin Ding ◽  
Weiguang Yu ◽  
Lei Bao ◽  
...  
Keyword(s):  
3D Printing ◽  
Three Dimensional ◽  
Operation Time ◽  
Harris Hip Score ◽  
Acetabular Fractures ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
3D Printing Technology ◽  
Significant Difference

Objective To assess the outcomes of traditional three-dimensional (3D) printing technology (TPT) versus mirror 3D printing technology (MTT) in treating isolated acetabular fractures (IAFs). Methods Consecutive patients with an IAF treated by either TPT or MTT at our tertiary medical centre from 2012 to 2018 were retrospectively reviewed. Follow-up was performed 1, 3, 6, and 12 months postoperatively and annually thereafter. The primary outcome was the Harris hip score (HHS), and the secondary outcomes were major intraoperative variables and key orthopaedic complications. Results One hundred fourteen eligible patients (114 hips) with an IAF (TPT, n = 56; MTT, n = 58) were evaluated. The median follow-up was 25 months (range, 21–28 months). At the last follow-up, the mean HHS was 82.46 ±14.70 for TPT and 86.30 ± 13.26 for MTT with a statistically significant difference. Significant differences were also detected in the major intraoperative variables (operation time, intraoperative blood loss, number of fluoroscopic screenings, and anatomical reduction number) and the major orthopaedic complications (loosening, implant failure, and heterotopic ossification). Conclusion Compared with TPT, MTT tends to produce accurate IAF reduction and may result in better intraoperative variables and a lower rate of major orthopaedic complications.

scholarly journals Impacts of Intraoperative Flow on Graft Patency of Sequential and Individual Saphenous Vein Grafts

2015 ◽  
Vol 10 (2) ◽  
pp. 85-89
Author(s):  
Akitoshi Takazawa ◽  
Hiroyuki Nakajima ◽  
Atsushi Iguchi ◽  
Mimiko Tabata ◽  
Kozo Morita ◽  
...  
Keyword(s):  
Saphenous Vein ◽  
Graft Patency ◽  
Vein Grafts ◽  
Saphenous Vein Grafts

scholarly journals Saphenous Vein Graft Disease Interventions

2021 ◽  
Vol 06 (03) ◽  
pp. 199-208
Author(s):  
Sarita Rao ◽  
K. Roshan Rao ◽  
Achukatla Kumar
Keyword(s):  
Saphenous Vein ◽  
Vein Graft ◽  
Left Internal Mammary Artery ◽  
Saphenous Vein Graft ◽  
Artery Bypass ◽  
Standard Of Care ◽  
Coronary Intervention ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Vein Grafts

AbstractIn the current era, coronary artery bypass grafting (CABG) is being increasingly performed using total arterial revascularization or a hybrid procedure of stenting of non-LAD disease and minimal access left internal mammary artery (LIMA) to LAD grafts, in order to minimize the need for vein grafts. Still, we encounter saphenous vein graft (SVG) disease, and it might require PCI, which often presents with unique challenges. The current favored strategy is to attempt PCI of the native coronary, if feasible, especially in long degenerated SVG disease, as it has shown better short- and long-term outcome. PCI is preferred over repeat CABG for early recurrent symptoms after CABG in patent LIMA graft and amenable anatomy patients. Balloon predilatation is not recommended unless delivery of an EPD or stent is not possible. Distal protection should be considered the standard of care for percutaneous coronary intervention (PCI) in most patients with older vein grafts, as periprocedural myocardial infarction and no reflow are the Achilles heel of SVG PCI. Intragraft vasodilators should be used liberally, even before balloon angioplasty/stenting. Avoid postdilatation, and usage of undersized but a longer stent length to reduce plaque extrusion through stent struts is preferred. Consider thrombectomy in lesions with a heavy thrombus burden. Keep activated clotting time on the higher side than in conventional PCI. Prolonged dual antiplatelet therapy (DAPT) based on the DAPT score is recommended. With all the precautions and care, we still need a fair wind in our favor to sail through the vein grafts disease.

Forearm Cephalic Vein Graft for Short, “Middle”-Flow, Internal Maxillary Artery to Middle Cerebral Artery Bypass

2015 ◽  
Vol 12 (2) ◽  
pp. 99-105 ◽  
Author(s):  
Erez Nossek ◽  
Peter D Costantino ◽  
David J Chalif ◽  
Rafael A Ortiz ◽  
Amir R Dehdashti ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Saphenous Vein ◽  
Vein Graft ◽  
Artery Bypass ◽  
Cephalic Vein ◽  
Maxillary Artery ◽  
Internal Maxillary Artery ◽  
Vein Grafts ◽  
Graft Length

Abstract BACKGROUND The cervical carotid system has been used as a source of donor vessels for radial artery or saphenous vein grafts in cerebral bypass. Recently, internal maxillary artery to middle cerebral artery bypass has been described as an alternative, with reduction of graft length potentially correlating with improved patency. OBJECTIVE To describe our experience using the forearm cephalic vein grafts for short segment internal maxillary artery to middle cerebral artery bypasses. METHODS All vein grafts were harvested from the volar forearm between the proximal cubital fossa where the median cubital vein is confluent with the cephalic vein and the distal wrist. RESULTS Six patients were treated with internal maxillary artery to middle cerebral artery bypass. In 4, the cephalic vein was used. Postoperative angiography demonstrated good filling of the grafts with robust distal flow. There were no upper extremity vascular complications. All but 1 patient (mortality) tolerated the procedure well. The other 3 patients returned to their neurological baseline with no new neurological deficit during follow-up. CONCLUSION The internal maxillary artery to middle cerebral artery “middle” flow bypass allows for shorter graft length with both the proximal and distal anastomoses within the same microsurgical field. These unique variable flow grafts represent an ideal opportunity for use of the cephalic vein of the forearm, which is more easily harvested than the wider saphenous vein graft and which has good match size to the M1/M2 segments of the middle cerebral artery. The vessel wall is supple, which facilitates handling during anastomosis. There is lower morbidity potential than utilization of the radial artery. Going forward, the cephalic vein will be our preferred choice for external carotid-internal carotid transplanted conduit bypass.

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