Pharyngeal closure after a total laryngectomy: mechanical versus manual technique

ObjectiveTo verify the main advantages and drawbacks of mechanical suturing for pharyngeal closure after total laryngectomy versus a manual suturing technique.MethodsA retrospective review was carried out of 126 total laryngectomies performed between 2008 and 2018. Manual closure was performed in 80 cases (63.5 per cent) and mechanical suturing was performed in 46 cases (36.5 per cent).ResultsMechanical suturing was used significantly more frequently in patients with: glottic tumours (p = 0.008), less local tumour extension (p = 0.017) and less pre-operative morbidity (p = 0.014). There were no significant differences in the incidence of pharyngocutaneous fistula between the manual suture group (16.3 per cent) and the mechanical suture group (13.0 per cent) (p = 0.628). None of the patients treated with mechanical suturing had positive surgical margins. Cancer-specific survival for the mechanical suture group was higher than that for the manual suture group (p = 0.009).ConclusionMechanical suturing of the pharynx after total laryngectomy is an oncologically safe technique if used in suitable cases.

End-to-end vascular anastomosis using a novel magnetic compression device in rabbits: a preliminary study

Magnetic compression anastomosis (MCA) has been appreciated as an innovative alternative to manual suturing in vascular reconstruction. However, magnetic devices have limitations in their applications. The present study aimed to introduce a newly developed magnetic device for end-to-end vascular anastomosis. Twenty male New Zealand rabbits were randomly assigned to receive end-to-end postcaval vein anastomosis using either a newly designed MCA device (Group MCA) or continuous-interrupted suturing (Group CIS). The anastomotic patency was evaluated by Doppler or venography immediately, 1 week, and 12 weeks after surgery. Anastomotic quality was evaluated gross and microscopic histological study 12 weeks after surgery. The procedure was successfully performed and all animals survived until sacrifice. The duration of surgery and anastomosis time in Group MCA were significantly shorter compared to Group CIS (all p < 0.001), and the incidence of anastomotic patency and postoperative morbidity were comparable between the two groups (all p > 0.05). Hematoxylin-eosin staining showed that anastomotic intima from Group MCA was much smoother with more regularly arranged endothelial cells than from compared to the Group CIS. A novel MCA device was successfully applied in rabbit vascular anastomosis. We demonstrated the reliability and effectiveness of this newly developed MCA in this study.

Simplifying Arterial Coupling in Microsurgery—A Preclinical Assessment of an Everter Device to Aid with Arterial Anastomosis

Background A novel arterial everter device was engineered to simplify microvascular coupling of arteries by reliably securing the stiff, muscular wall of arteries over coupler pins. We compare microvascular coupling with the everter device to manual suturing for arterial anastomoses in a live large animal model. Materials and Methods In this preliminary study, bilateral external femoral arteries of five male swine were exposed and sharply divided. Arteries were anastomosed using either interrupted sutures (n = 5) or the everter device and Synovis Coupler (n = 5). The efficiency in engaging coupler pins, the time taken to perform the anastomosis, and vessel patency immediately post-op and at 1-week postanastomosis were evaluated. Vessel wall injury and luminal stenosis were compared between groups using histomorphometric analyses. Results On an average, 80% of coupler pins engaged the vessel walls after a single pass of the everter. The average time to perform the anastomosis was significantly less when using the everter/coupler compared with manual suturing (6:35 minutes versus 25:09 minutes, p < 0.001). Immediately post-op, 100% patency was observed in both groups. At 1 week post-op, four of five (80%) of coupled arteries and all five (100%) of hand-sewn arteries were patent. The degree of arterial wall injury, neointimal formation, and luminal stenosis for patent arteries were similar between groups. Conclusions Successful arterial anastomoses using the everter device with the Synovis Coupler was easier and significantly more efficient when compared with a standard hand-sewn technique. Both techniques had acceptable patency rates and similar effects on the vessel wall and intima.

TEACHING MODEL FOR EVALUATION OF THE ABILITY AND COMPETENCE PROGRESS IN ENDOSUTURE IN SURGICAL SKILL LABORATORY

ABSTRACT Background : Laparoscopic manual suturing is probably the most difficult skill to be acquired in minimally invasive surgery. However, laparoscopic exercise endo-sutures can be learned with a simulator and are of great practical importance and clinical applicability, absorbing concepts that are immediately transferred to the operating room. Aim : To assess the progression of skills competence in endo-sutures through realistic simulation model of systematized education. Method : Evaluation of the progression of competence of students in three sequential stages of training in realistic simulation, pre-test (V.1), teaching concepts (V.2) and training station for absorption of video concepts in surgery - ergonomics, stereotaxia, ambidexterity, haptic touch, fucral effect, applied in the manufacture of points corresponding to a Nissen fundoplication, in endo-suture for realistic simulation. Results : All students who attended the course absorbed the video concepts in surgery; most participants showed steady and continued improvement and during the stages of training, obtained progression of appropriate skills, defining competence and validation of the teaching model to achieve proficiency. Conclusions : The teaching model was adequate, safe, revealed the profile of the student, the evolutionary powers of the endo-sutures performance and critical analysis of the training to achieve proficiency in bariatric procedures.

Major Lung Resections Using Manual Suturing Versus Staplers During Fiscal Crisis

During fiscal crisis there was a period of shortage of staplers in our hospital, which drove us to manual suturing of bronchi and pulmonary vessels during major lung resections. We present our experience during that period in comparison to a subsequent period when staplers became available again. A total of 256 lobectomies and 78 pneumonectomies using manual suturing (group A) were performed between September 2009 and September 2010, and were compared regarding surgical outcome with 248 lobectomies and 60 pneumonectomies using staplers (group B), performed between September 2011 and September 2012. Although we did not observe statistically significant differences but only a trend toward shorter operative time, for both lobectomies (P = 0.21) and pneumonectomies (P = 0.31) we actually noted savings of 41 and 47 minutes, respectively, in operative time using staplers (group B), in comparison with manual suturing (group A). We also observed a trend toward lower morbidity rates in group B patients who underwent lobectomy (10.48%) and pneumonectomy (20%) versus group A patients who underwent lobectomy (15.62%) and pneumonectomy (30.76%); we did not observe any substantial differences in the other surgical outcome variables, in patients' demographic, comorbidities, or in anatomic allocation of surgical procedures performed. The use of staplers offers safety with secure bronchial or vascular sealing, as well as reduction of operative time. Their unavailability at an interval during fiscal crisis, although it did not affect surgical outcome, revealed their usefulness and value.

Successful Intracorporeal Suturing Following Laparoscopic Resection of a Large Gastrointestinal Stromal Tumor Located at the Esophagogastric Junction

Laparoscopic partial resection of gastric gastrointestinal stromal tumors (GISTs) ≤5 cm in size is widely performed, whereas that of large GISTs (size &gt;5 cm) is controversial because of oncologic and technical safety. Furthermore, laparoscopic resection of GISTs located at the esophagogastric junction (EGJ) is difficult because of the high risk of narrowing or/and deformity of the EGJ. In the current study we report a case of laparoscopic partial resection of a large GIST located at the EGJ. A 74-year-old female patient visited our institution complaining of epigastric discomfort. An esophagogastroduodenoscopy and an abdominal computed tomography scan revealed a 7.5 × 4.0 cm GIST at the EGJ and upper stomach. The patient underwent laparoscopic partial resection with intracorporeal suturing, without any breakage of the pseudocapsule. The defect of the esophagogastric wall after resection was closed by intracorporeal running suture. The patient's postoperative course was uneventful. To the best of our knowledge, this is the first report of laparoscopic resection of a large GIST located at the EGJ. Our technique of intracorporeal manual suturing following laparoscopic gastric resection can be a valid option for minimally invasive surgery for a large GIST located at the EGJ.