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Strassner H, Caulk A, Reher N, Petrescu S, Vasanji A. Evaluating Performance of Circular Staplers Using Comparative Test Methods for Evidence-Based Surgery. Surg Innov 2023; 30:576-585. [PMID: 37029908 DOI: 10.1177/15533506231166447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
BACKGROUND Circular stapler anastomosis is a common surgical procedure. Despite technological advancements, anastomotic leak remains a postoperative concern. Assessment of new technologies is impeded by variations in test methods and analysis, precluding outcome reproducibility and direct comparisons of results across studies. The development of robust and reproducible preclinical test methods is critical to accelerating stapling technology advancements. METHODOLOGY Leak pressure, staple line perfusion and security, and device removal force were quantified for triple-row (Tri-staple EEA, TriEEA) and double-row staplers (Echelon Circular Powered, ECP). Leak and perfusion testing were performed in vivo. Device removal force and staple line security testing were performed with synthetic medium using an Instron. Data were analyzed using unpaired student's t-test or Kruskal-Wallis test, with statistical significance defined as P < .05. RESULTS Leak pressure was 73% higher in TriEEA vs ECP (P = .016). TriEEA staple line failure force was lower than ECP at 40 and 50 mmHg (P = .001 and P = .023, respectively). Perfusion to the staple line was higher (148%) for TriEEA than for ECP (P = .003) and the force required to remove the device from its stapled anastomosis was 78% lower for TriEEA than for ECP (P < .001). DISCUSSION/CONCLUSIONS This report addresses a primary limitation in stapling research by presenting novel methodologies which enhance clinical relevance and provide sufficient detail for reproduction by independent investigators. These methods are applied to a comparison between triple-row and double-row staplers to demonstrate utility of new test methods in assessing key technology design features.
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Affiliation(s)
| | | | - Nicholas Reher
- Surgical Innovations, Medtronic plc, North Haven, CT, USA
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Liu C, Wang Y, Zhao AR, Hu FA, Fan Q, Han G, Ding G, Fu T, Geng L, Yin H. An alternative asymmetric figure-of-eight single-layer suture technique for bowel anastomosis in an in vitro porcine model. Front Surg 2022; 9:896542. [PMID: 36248362 PMCID: PMC9554239 DOI: 10.3389/fsurg.2022.896542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
Anastomotic techniques are of vital importance in restoring gastrointestinal continuity after resection. An alternative asymmetric figure-of-eight single-layer suture anastomotic technique was introduced and its effects were evaluated in an in vitro porcine model. Twelve 15-cm grossly healthy small intestine segments from a porcine cadaver were harvested and randomly divided into asymmetric figure-of-eight single-layer suture (figure-of-eight suture) and single-layer interrupted suture technique (interrupted suture) groups (n = 6 in each group). The anastomosed bowel was infused with methylene blue solution to test anastomotic leakage. Anastomosis construction time, leakage, and suture material cost were recorded and analyzed statistically using Fisher's exact test and Student's t-test. One anastomotic leakage occurred (16.67%) in the figure-of-eight suture group, and two (33.33%) in the interrupted suture group (p > 0.9999). The anastomosis construction time was relatively short in the figure-of-eight suture group, but the difference did not reach a statistically significant level between the two groups. The mean number of suture knots and the cost of suture material in the figure-of-eight suture group were significantly decreased in comparison to the interrupted suture group (15.67 ± 3.30 vs. 22.17 ± 2.03, 167.11 ± 35.20 vs. 236.45 ± 21.70 CNY, p < 0.01, respectively). Our results suggested that the alternative asymmetric figure-of-eight suture technique was safe and economic for intestinal anastomosis. An in vivo experiment is required to elucidate the effects of this suture technique on the physiological anastomotic healing process.
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Affiliation(s)
- Chen Liu
- The Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou, China
- The Department of Surgery, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yewen Wang
- The Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou, China
| | - Ai-rong Zhao
- The Department of Pharmacy, Binzhou Medical University Hospital, Binzhou, China
| | - Feng-ai Hu
- The Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, China
| | - Qizhong Fan
- The Department of Pharmacy, Binzhou Medical University Hospital, Binzhou, China
| | - Guoxiu Han
- The Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou, China
| | - Guojian Ding
- The Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou, China
| | - Tingliang Fu
- The Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou, China
| | - Lei Geng
- The Department of Pediatric Surgery, Binzhou Medical University Hospital, Binzhou, China
- Correspondence: Lei Geng Hongshan Yin
| | - Hongshan Yin
- The Department of Urology, Binzhou Medical University Hospital, Binzhou, China
- Correspondence: Lei Geng Hongshan Yin
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Kryzauskas M, Bausys A, Dulskas A, Imbrasaite U, Danys D, Jotautas V, Stratilatovas E, Strupas K, Poskus E, Poskus T. Comprehensive testing of colorectal anastomosis: results of prospective observational cohort study. Surg Endosc 2022; 36:6194-6204. [PMID: 35146557 DOI: 10.1007/s00464-022-09093-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 01/31/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Anastomotic leakage remains one of the most threatening complications in colorectal surgery. Intraoperative testing of anastomosis may reduce the postoperative anastomotic leakage rates. This study aimed to investigate a novel comprehensive intraoperative colorectal anastomosis testing technique to detect the failure of the anastomosis construction and to reduce the risk of postoperative leak. METHODS This multi-centre prospective cohort pilot study included 60 patients who underwent colorectal resection with an anastomosis at or below 15 cm from the anal verge. Comprehensive trimodal testing consisted of indocyanine green fluorescence angiography, tension testing, air-leak, and methylene blue leak tests to evaluate the perfusion, tension, and mechanical integrity of the anastomosis. RESULTS Ten (16.7%) patients developed an anastomotic leakage. Trimodal test was positive in 16 (26.6%) patients and the operative plan was changed for all of them. Diverting ileostomy was performed in 14 (87.5%) patients. However, two (12.5%) patients still developed clinically significant anastomotic leakage (Grade B). Forty-four (73.4%) patients had a negative trimodal test, preventive ileostomy was performed in 19 (43.2%), and five (11.4%) patients had clinically significant anastomotic leakage (Grade B and C). CONCLUSION Trimodal testing identifies anastomoses with initial technical failure where reinforcement of anastomosis or diversion can lead to an acceptable rate of anastomotic leakage. Identification of well-performed anastomosis could allow a reduction of ileostomy rate by two-fold. However, anastomotic leakage rate remains high in technically well-performed anastomoses.
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Affiliation(s)
- Marius Kryzauskas
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Ciurlionio Str., 03101, Vilnius, Lithuania.
| | - Augustinas Bausys
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Ciurlionio Str., 03101, Vilnius, Lithuania
| | | | | | - Donatas Danys
- Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Valdemaras Jotautas
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Ciurlionio Str., 03101, Vilnius, Lithuania
| | | | - Kestutis Strupas
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Ciurlionio Str., 03101, Vilnius, Lithuania
| | - Eligijus Poskus
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Ciurlionio Str., 03101, Vilnius, Lithuania
| | - Tomas Poskus
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Ciurlionio Str., 03101, Vilnius, Lithuania
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Gräfitsch A, Kirchhoff P, Soysal SD, Däster S, Hoffmann H. Dynamic Serosal Perfusion Assessment during Colorectal Resection Using Visible Light Spectroscopy. Eur Surg Res 2021; 62:25-31. [PMID: 33906197 DOI: 10.1159/000514921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 02/01/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Anastomotic leakage (AL) in colorectal surgery occurs with an incidence of up to 20%. Bowel perfusion is deemed to be one of the most important factors for anastomotic healing. However, not much is known about its variability during colorectal surgery and its impact on the outcome. Therefore, this study aims to evaluate serosal oxygen saturation patterns during colorectal resections with visible light spectroscopy (VLS). MATERIALS AND METHODS Bowel perfusion in patients undergoing left-sided colorectal resections was assessed at different timepoints during surgery using VLS on the colonic serosa. The primary outcome parameter was serosal oxygen saturation (StO2) at the anastomosis during different timepoints of surgery. RESULTS We included 50 patients who underwent colorectal resection for bowel cancer (58%) and diverticular disease (34%). StO2 at the proximal site of the anastomosis increased significantly throughout the surgery (mean difference 3.61%; 95% CI -6.22 to -1.00; p = 0.008). However, aberrancy from this identified perfusion pattern had no impact on the postoperative outcome. CONCLUSION During colorectal resections, we could demonstrate an increase of the colonic StO2 throughout surgery. Appearance of AL was not associated with lower StO2, underlining the multifactorial genesis of developing AL.
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Affiliation(s)
- Alexander Gräfitsch
- General and Visceral Surgery, University Hospital Basel, Basel, Switzerland.,Visceral Surgery, Kantonsspital Aarau, Aarau, Switzerland
| | - Philipp Kirchhoff
- General and Visceral Surgery, University Hospital Basel, Basel, Switzerland.,Center for Hernia Surgery and Proctology, ZweiChirurgen GmbH, Basel, Switzerland
| | - Savas D Soysal
- General and Visceral Surgery, University Hospital Basel, Basel, Switzerland
| | - Silvio Däster
- General and Visceral Surgery, University Hospital Basel, Basel, Switzerland
| | - Henry Hoffmann
- General and Visceral Surgery, University Hospital Basel, Basel, Switzerland.,Center for Hernia Surgery and Proctology, ZweiChirurgen GmbH, Basel, Switzerland
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