Bronchoplasty with continuous sutures for non-small-cell lung cancer

Bronchoplasty is sometimes performed in patients with compromised lung function to preserve functional lung parenchyma. Although the bronchial anastomosis was generally performed with interrupted sutures, we applied it with continuous sutures by using monofilament absorbable material in two patients with non-small-cell lung cancers to obtain a good operative view and shorten the operating time. These patients recovered uneventfully with good healing of the bronchial anastomosis. Bronchial anastomosis with continuous sutures is considered a useful technique.     

Does pleural bronchial wrapping improve wound healing in right sleeve lobectomy?

The effect of bronchial circulation on wound healing at the site of anastomosis after right upper sleeve lobectomy was studied in dogs. In two dogs (Group I), the bronchial arteries were carefully preserved during the sleeve lobectomy. In 16 dogs (Group II), only sleeve lobectomy was performed after all bronchial arteries in the hilum were ligated. In three dogs (Group III), the site of anastomosis was wrapped by a Penrose drain after sleeve lobectomy. In three other dogs (Group IV), the site of anastomosis was wrapped with a free pleural flap after sleeve lobectomy. In another group of 11 dogs (Group V), the anastomotic site was wrapped with a pedicled pleural flap. The dogs in Group I were put to death immediately and bronchial arterial circulation was recognized to consist primarily of systemic arterial blood. In Group II dogs, bronchial arteries distal to the anastomosis filled with pulmonary arterial blood immediately after the sleeve lobectomy. Although the majority of bronchial arteries became filled with systemic arterial blood with time, some vessels were filled with pulmonary arterial blood even 7 days after the sleeve lobectomy. In Group III dogs, wound healing at the site of anastomosis was severely delayed, and 7 days after the sleeve lobectomy the majority of bronchial arteries in the bronchial wall distal to the anastomosis were filled with pulmonary arterial blood. In Group IV dogs, the state of wound healing at the bronchial anastomotic site was similar to that of Group III dogs. In Group V, although the state of wound healing at the anastomosis was relatively good in most of the animals, the pedicled pleural wrap did not significantly improve bronchial circulation over that of Group II.     

连续褥式缝合技术在包皮环切术中的应用

目的:探讨连续褥式缝合技术在包皮环切术中应用的效果。方法:30例包皮过长或包茎患者,施行包皮环切术,切口采用连续褥式缝合技术进行缝合。结果:临床应用30例,随访3～6月,所有病例切口一期愈合,无出血、感染等并发症,外形美观,患者满意。结论:连续褥式缝合技术兼具间断缝合及连续缝合的优势,适宜在包皮环切术中应用。     

A Comparison of Continuous and Interrupted Suturing in Laparoscopic Pyeloplasty

Background:

Laparoscopic pyeloplasty is one of the most common reconstructive procedures performed by urologists. Both continuous and interrupted sutures are being practiced for ureteropelvic anastomosis. The success rate and the complications associated with the suturing technique needs evaluation. We analyzed the results from of our patients who underwent laparoscopic pyeloplasty using both techniques.

Objective:

To review the outcome differences among patients undergoing laparoscopic pyeloplasty regarding suturing technique.

Materials and Methods:

All patients who underwent laparoscopic, transperitoneal dismembered pyeloplasty of the primary pelviureteric obstruction were analyzed. The primary outcome was successful pyeloplasty, as assessed by the resolution of symptoms and T½ <10 minutes. The secondary outcomes were the complication rate and the operative parameters. The difference in the parameters was assessed by Student t test analysis.

Results:

Of the 107 patients we studied, 65 had interrupted suturing and 42 had continuous suturing. The success rate was not significantly different among the 2 groups. The mean suturing time, postoperative drainage volume, postoperative hospital stay, and total cost of the procedure were significantly less in the continuous suturing group.

Conclusion:

The continuous suturing technique is preferred over the interrupted suturing technique for laparoscopic pyeloplasty because the success rates are equal and the postoperative stay, suturing time, drain output, and cost of the procedure are better.     

Comparison of laser vascular welding,interrupted sutures,and continuous sutures in growing vascular anastomoses

Background and Objectives: The argon laser-assisted vascular anastomosis may solve the problems of conventional sutured anastomosis, such as vascular stenosis and arrest of growth owing to a foreign-body reaction to suture material. Study Design/Materials and Methods: Twelve argon laser-assisted vascular anastomoses, seven conventional anastomoses with interrupted sutures, and five conventional anastomoses with continuous sutures were performed in 12 young mongrel dogs. Results: Five months later, the external diameter at the anastomosis had increased 70.5% in the laser group, 67.0% in the interrupted suture group, and 22.9% in the continuous suture group. Histological examination of the laser-assisted anastomoses showed almost complete healing, with no granulomatous response around the anastomotic site. In the interrupted suture group, marked scaring and foreign body reactions were observed on the vessel wall at the site of the anastomosis. The continuous suture group showed more remarkable disorientation of the vascular layer and intimal hyperplasia than the interrupted suture group. Conclusion: Vascular anastomosis using the argon laser offers advantages over the conventional procedure in growing vessels.     

Cardiac output distribution after left colon anastomosis in the rat.

Resection and anastomosis of the left colon result in an aysmmetric breakdown of preexisting collagen in the colonic wall during the first days of healing. Suture technique influences this reaction. To study the regional blood flow in the colon after resection and anastomosis a tracer microsphere technique was used for determination of the cardiac output distribution in four groups of rats: unoperated and sham-operated controls and rats with left colon anastomosis sutured either by continuous or interrupted sutures. There were no differences in the organ distribution of caridac output between unoperated and sham-operated controls. Left colon resection and anastomosis led to an increased regional blood flow in the colon, which was most marked proximal to the anastomosis and furthermore more pronounced in animals with anastomosis made of continuous suture than in those made of interrupted sutures. Further, resection and anastomosis resulted in an increased cardiac output distribution to the visceral organs. The visceral increase was most pronounced in animals with continuous suture. This increase was predominantly observed in the kidneys and in the colon. The latter is interpreted as being due to an increased metabolic demand induced by resection and anastomosis.     

A comparison of interrupted and continuous sutures for tracheal anastomoses in sheep.

OBJECTIVE: To study the tensile strength of tracheal anastomoses. DESIGN: Experimental study. SETTING: University medical school laboratory, Germany. ANIMALS: 15 sheep. INTERVENTIONS: Tracheal anastomoses with three different suturing techniques: a continuous suture and interrupted sutures with either a monofilament or a polyfilament material. Anastomoses were tested to breaking after being in place for 1, 2, 4, 8 or 24 weeks. RESULTS: After one week, with all three materials, the trachea broke at the anastomosis. In animals that survived longer, the trachea broke further away from the anastomosis. There was no significant difference between the mean values of the breaking force for continuous sutures and single interrupted sutures (p = 0.9). CONCLUSION: The suturing technique (continuous or interrupted) has less relevance for the tensile strength of the anastomosis than in vitro experiments suggest.     

Tissue adhesive in bronchial closure

Monomeric n-butyl-2-cyanoacrylate was used in 25 patients undergoing pulmonary resections to strengthen the bronchial stump after pneumonectomy (n = 11) and to aid bronchial (n = 13) and tracheal anastomosis (n = 1) after sleeve resections. Neither group had any incidence of bronchopleural fistula. Bronchial anastomosis was accomplished in patients who underwent sleeve resection, reducing the number of sutures required to four apposing sutures, with the tissue adhesive ensuring an airtight closure. There was no incidence of bronchial stenosis. The efficacy of n-butyl-2-cyanoacrylate in preventing fistula formation after bronchial resections makes it an ideal agent in pulmonary surgery. Its use obviated the use of pedicled pleural flap, thus ensuring pleural integrity for extrapleural continuous intercostal nerve blockade for postoperative analgesia.     

Tracheobronchial sleeve resection with the use of a continuous anastomosis: results of one hundred consecutive cases.

OBJECTIVE: We have used a continuous suture technique for all tracheal and bronchial anastomoses with satisfactory results in our institution. The objective of this article is to review our experience with sleeve resections using this technique and report the associated morbidity and mortality in 100 consecutive cases. METHODS: Our experience with sleeve resection using a continuous suture (3-0 polypropylene) technique was reviewed in 100 consecutive cases. The median age of the patients was 53.3 years with a range of 21 to 81 years. There were 54 male patients and 46 female patients. Resection was undertaken for malignant disease in 81 patients, acquired stricture in 14 patients, benign tumor in 4 patients, and trauma in 1 patient. Among 28 patients in whom lung parenchyma was not resected, 16 patients had tracheal resection and 12 had bronchial sleeve resection. Sleeve pneumonectomy was undertaken in 2, sleeve lobectomy in 66, and sleeve segmentectomy in 4. RESULTS: There were 12 postoperative complications (12%) and 2 postoperative deaths resulting from bronchoatrial fistula and pneumonia (2%). Stricture as a late complication occurred in 5 patients, 2 of whom required a bronchial stent. Other late complications were bougienage, reanastomosis, and completion pneumonectomy (1 each). CONCLUSION: Our experience suggests that the results of continuous suture technique are comparable with those from reported series using interrupted suture technique for tracheal and bronchial anastomosis.     

Efficacy and safety of tracheobronchoplasty after induction therapy for locally advanced lung cancer

OBJECTIVES: Patients receiving induction therapy may have increased risk of morbidity and mortality after surgery. We retrospectively evaluated the influence of preoperative treatment in patients who underwent sleeve resection for lung cancer. METHODS: A series of 48 consecutive patients who underwent sleeve resection with a telescoping anastomosis was retrospectively analyzed. A sleeve lobectomy and pneumonectomy were performed in 41 and 7 patients, respectively. Twenty patients received preoperative induction therapy; of them, 16 received induction chemoradiotherapy and 4 received only chemotherapy. Twenty-eight patients underwent the procedure without adjuvant therapy. RESULTS: The telescopic procedure was performed by placing sutures around the proximal and distal portions of the bronchial cartilage without wrapping the anastomosis. Among the 20 patients who received induction therapy, pulmonary angioplasty was performed in 5 and chest wall resection was performed in 3. Seven of these 20 patients (35%) had postoperative complications. Among the 28 patients without preoperative adjuvant therapy, pulmonary angioplasty was performed in 3, diaphragmatic resection was performed in 1, and chest wall resection was performed in 1. Three of these 28 patients (11%) had postoperative complications. Complications relating to the anastomosis occurred in 1 patient (5.0%) who received induction therapy; however, no operative deaths occurred. Bronchoscopic examinations demonstrated that mucosal healing was prolonged in patients who underwent induction therapy. CONCLUSION: Induction therapy did not significantly affect morbidity or mortality among patients who underwent sleeve resection.     

Experience of twenty-one cases of tracheo-bronchoplasty

Twenty-one cases of tracheo-bronchoplasty were performed in Akita University Hospital from 1997 to 2007. There are 14 cases of squamous cell carcinoma, 3 cases of adenocarcinoma, 2 cases of adenoid cystic carcinoma, 1 case of inflammatory tracheal stenosis, and 1 case of inflammatory bronchial stenosis. We performed 12 cases of right upper sleeve lobectomy, 4 cases of left upper sleeve lobectomy, 2 cases of left lower sleeve lobectomy, 1 case of right sleeve pneumonectomy, and 2 cases of tracheoplasty. Of 3 cases, we added sleeve resection of pulmonary artery. The ends of the bronchus are anastomosed end-to-end. The bronchial anastomotic suture was carried out peri-cartilaginously through all layers using an interrupted suture technique except for membranous portion. Membranous portion was sutured a continuous anastomotic technique. We use monofilament, absorbable suture material.     

The use of tissue adhesive in pulmonary resections

One hundred eighty-seven consecutive patients underwent resection of primary bronchogenic carcinoma with intraoperative application of monomeric n-butyl-2-cyanoacrylate glue from July 1987 through December 1992. The glue reinforced either the stapled bronchial stump (135 patients), the sutured bronchial anastomosis in sleeve resections (37 patients) or the staple lines of wedge resections (15 patients). Mortality was 1.6% overall (3 of 187), and 5% among pneumonectomies (2 of 40). Bronchopleural fistulae occurred in 0.5% (1 of 187) of all pulmonary resections and 2.5% of pneumonectomies (1 of 40). There was no fistula in the lobectomy or sleeve resection groups. Bronchial anastomosis was accomplished in patients who underwent sleeve resection with four interrupted apposing sutures and airtight closure ensured by the tissue adhesive. There was no incidence of bronchial stenosis. There were no cyanoacrylate adhesive-related complications. A follow-up of the patients up to 68 months has indicated not only its effectiveness but also its safety. Monomeric n-butyl-2-cyanoacrylate glue is safe, offers protection to bronchial margins and may be valuable in preventing bronchial stenosis after sleeve resections.     

Quill免打结缝合线与薇乔线在腹腔镜下胆总管连续缝合的应用比较

目的探讨Quill免打结缝合线在腹腔镜下胆总管连续缝合的应用效果。方法2011年3月～2013年6月79例腹腔镜胆总管探查术Quill免打结缝合线连续缝合胆总管作为Quill线组,同期72例薇乔线连续缝合胆总管作为薇乔线组,比较2组胆漏发生率、胆总管缝合时间、术后肠功能恢复、住院费用、住院时间等。结果Quill线组缝合时间（6．1±1．6）min,显著短于薇乔线组（14．2±2．5）min（t=23．923,P=0．000）;Quill线组住院时间（8．4±1．2）d,显著短于薇乔线组（11．5±3．2）d（t=8．016,P=0．000）;Quill线组术后胆漏发生率0,显著低于薇乔线组6．9％（5／72）（Fisher’s检验,P=0．023）。2组术后肠功能恢复时间、住院费用无统计学差异（P〉0．05）。结论腹腔镜胆总管探查术Quill线连续缝合可预防胆漏的发生,比薇乔线缝合更简单、快捷。     

Microsurgical sutures of the trachea and bronchi (experimental study)

A method for the formation of tracheal and bronchial anastomoses with a two-row suture by means of microsurgical techniques was elaborated in experiments on 52 mongrel dogs. In the control series the bronchial anastomosis was created with interrupted sutures passed through all the coats of the bronchial wall. Morphological study of the reparative processes in the tracheal and bronchial anastomoses showed that healing of the anastomosis formed by means of microsurgical techniques occurred sooner and with a lesser inflammatory reaction than healing of the communication in the control series. This is explained by the fact that the microsurgical suture of the tracheal and bronchial mucosa ensures adequate approximation of the margins of the anastomosis and reliable air-tightness and promotes healing by first intention.     

Comparison of running and interrupted vesicourethral anastomoses in a porcine model

PURPOSE: To compare running and interrupted suturing techniques for porcine vesicourethral anastomosis with regard to procedure time, histopathologic effects, and leakage. MATERIALS AND METHODS: Twelve domestic pigs were randomized to a running (N = 6) or an interrupted (N = 6) vesicourethral anastomosis with polyglycolic acid sutures. In each case, the bladder was drained for 7 days. A cystogram was performed immediately after completion of each anastomosis and on postoperative days 7 and 30. Animals were sacrificed on postoperative day 30, and the area of the anastomosis was excised en bloc for histopathologic evaluation. RESULTS: All procedures were completed laparoscopically. The mean operative time for continuous and interrupted suturing were 27.5 and 36.8 minutes, respectively (P = 0.3324). A significant learning curve was noted for both anastomoses, with operative times decreasing with experience in both groups. There was no difference in anastomotic leakage. Histopathology examination revealed more muscle-layer fibrosis in the interrupted- suture group than in the continuous-suture group, with a mean score of 2.17 and 1.67, respectively (P = 0.0325). CONCLUSIONS: Both continuous and interrupted vesicourethral anastomoses are feasible. In this in-vivo porcine comparison, there was no difference with respect to procedure time or anastomotic leakage. However, histopathologic grading demonstrated greater muscle fibrosis in the interrupted-suture group.     

Single-Layer versus Double-Layer Laparoscopic Intracorporeally Sutured Gastrointestinal Anastomoses in the Canine Model

Objective:

The objective of this study was to compare the gross and histopathologic changes following 1- versus 2-layer hand-sewn suture techniques in laparoscopic gastrointestinal anastomosis in dogs.

Methods:

This was an experimental prospective study of 16 healthy mixed breed male and female dogs. Animals were randomly divided into 2 groups. Two-layer side-to-side hand-sewn laparoscopic gastrojejunostomies were performed in group A, so that simple interrupted sutures were placed in the outer layer and simple continuous suture was used in the inner layer. The 1-layer simple continuous anastomosis between the stomach and jejunum was done in group B precisely. Specimen were collected from the sites of anastomosis, and H&E statining was performed for light microscopic studies.

Results:

All animals survived the surgery. There was no gross inflammation, ischemia, apparent granulation tissue, abscess or fistula formation, leakage or stricture formation, and all sites of anastomosis were patent. Several adhesion formations were found in the abdomen with the higher incidence in the control group. Mean scores of leukocyte infiltration and granulation tissue formation at the sites of anastomosis were statistically insignificant between groups (P>0.05).

Conclusions:

Gross and histopathologic findings revealed that hand-sewn laparoscopic gastrointestinal anastomosis with the 1-layer suture technique is comparable to the 2-layer suture technique.     

Classification and comparison of five techniques of end-to-end microarterial anastomoses in rats: A new proposed technique

We propose a new classification of five main techniques for microarterial anastomoses: interrupted, autogenous cuff, continuous, sleeve and partial sleeve. The last method was developed by the authors. A study was performed on 48 albino rats and comprised 20 anastomoses of each type (for a total of 100), performed on femoral and carotid arteries of average size 0.83 mm. These were compared with respect to patency, anastomosis time, leak, bleeding time, number of sutures (bites), microangiography, histopathology and scanning electron microscopy. The overall patency was 88%, and that of the partial sleeve technique was 100%, associated with 30% incidence of aneurysms. Clinical, histopathological and scanning electron microscopy findings showed better results for techniques with predominantly extraluminal sutures (sleeve and partial sleeve), which was particularly relevant in our situation, in which a larger sized needle (150 μm) had to be used. An overall aneurysm incidence of 17% was noted. © 1995 Wiley-Liss, Inc.     

Comparison of anastomotic suturing techniques in the rat esophagus.

BACKGROUND: Long-gap esophageal atresia continues to be a challenging pediatric thoracic surgical problem. Despite the use of various tension relieving procedures, the esophageal anastomosis is often performed under considerable tension. Excessive tension can cause anastomotic sutures to pull through the esophageal tissue, with resultant early esophageal anastomotic dehiscence. To test the hypothesis that interrupted horizontal mattress sutures would withstand the forces of tension better than interrupted simple sutures, an experimental study of rat esophageal anastomoses was done. METHODS: Twenty rats were killed and their esophagi were excised. The esophagi were divided in the mid portion and end-to-end anastomoses were done using interrupted 6-0 polypropylene sutures. Ten rats had anastomoses done with interrupted simple sutures and ten had interrupted horizontal mattress suturing. Anastomotic breaking strength was tested in a tensiometer. RESULTS: Anastomotic breaking strength was 3.22+/-0.56 N for the interrupted simple sutured anastomoses and 3.51+/-0.61 N for the interrupted horizontal mattress group (p=0.30). The difference was not significant. CONCLUSIONS: In this animal study interrupted simple and horizontal mattress suturing withstood the disruptive forces of anastomotic tension equally well.     

Spiral interrupted suturing technique for microvascular anastomosis: a comparative study

This is an experimental study comparing the suturing time and patency rate of a spiral interrupted suturing technique to those of conventional interrupted and continuous suturing technique in end-to-end as well as end-to-side anastomosis. The spiral interrupted suturing technique requires less time for either end-to-end or end-to-side anastomosis than conventional interrupted suturing technique, and does not result in stenosis as shown in the venous end-to-end anastomosis by continuous suturing technique.     

End-to-end microvascular anastomosis in the rat carotid artery using continuous horizontal mattress sutures

This paper reports a continuous horizontal mattress suture technique with advantages such as decreased time for anastomosis, minimized anastomotic leakage, eversion around the vessel edges, and other advantages which the continuous anastomosis technique has. This technique was compared with the classical interrupted and classical continuous suture techniques on a total of 59 Sprague-Dawley rat common carotid arteries: Group 1 (n = 19), interrupted suture technique; Group 2 (n = 20), standard continuous technique, and Group 3 (n = 20), continuous horizontal mattress technique. Early (30 min) and late (21 days) patency rates, anastomosis time, leakage on clamp release, oozing duration, additional sutures needed, and total number of sutures placed were statistically compared between groups. Specimens were taken at the 21st day randomly, and light microscopy (LM), scanning electron microscopy (SEM), and angiographic studies were performed. Results revealed that the continuous mattress suture technique has the advantages of providing a water-tight anastomosis with less suture materials in a shorter time, and minimal intraluminal suture material which can incite thrombosis. On the other hand, a tendency to anastomotic stricture was found to be the sole disadvantage of this technique.