Which determinants are considered to be important for adherence to Negative Pressure Wound Therapy: A multimethods study.

AIM: To explore the extent of patients that choose to cease Negative Pressure Wound Therapy (NPWT) prematurely in a clinical setting, and to explore the determinants of nonadherence. METHOD: This study exists out of: (1) a retrospective study to assess the number of patients who ceased NPWT prematurely; (2) a narrative review (NR) to identify determinants of nonadherence; and (3) a survey among wound care specialists to explore specific determinants of nonadherence to NPWT. RESULTS: (1) Based on the retrospective study, 20% ceased NPWT prematurely because of experienced limitations in daily activities. (2) Based on 22 studies, 23 determinants that might influence nonadherence were identified and added as questions in the survey. (3) Twenty-two percent (n = 136) wound care specialists completed the survey. Confidence with the healthcare team, consistency in therapy advices, coping with pain, former negative experiences with NPWT, a normal activity pattern, social support from family or friends, and support from the healthcare team were identified as highly relevant determinants of nonadherence to NPWT. Only religion scored distinctively lower. CONCLUSION: This study is a first step in exploring the determinants of nonadherence to NPWT. In 20% NPWT was prematurely ceased at the request of the patient, this means that this therapy may have not been the best choice of therapy for this particular patient. The identification of potential determinants of nonadherence may help healthcare professionals in their dialogue with patients. The next step should be a prognostic study to assess which determinants best predict adherence to NPWT.

Complications and Impact on Quality of Life of Vertical Rectus Abdominis Myocutaneous Flaps for Reconstruction in Pelvic Exenteration Surgery.

BACKGROUND: Pelvic exenteration for malignancy sometimes necessitates flap reconstruction. OBJECTIVE: This study's aim was to investigate flap-related morbidity. DESIGN: A prospective database was reviewed from 2003 to 2016. All medical charts, correspondence, and outpatient follow-up records up to May 2017 were reviewed. SETTINGS: This study was conducted at a tertiary referral unit. PATIENTS: Patients who underwent pelvic exenteration surgery were selected. INTERVENTIONS: Reconstruction was performed with a vertical rectus abdominis myocutaneous flap. MAIN OUTCOME MEASURES: Primary outcome was flap-related complications (short or long term >3 months). Secondary outcomes were hospital stay, readmission, mortality, and quality of life (Short Form-36, Functional Assessment of Cancer Therapy for patients with colorectal cancer). RESULTS: Of 519 patients undergoing pelvic exenteration surgery, 87 (17%) underwent flap reconstruction. Median follow-up was 20 months (interquartile range, 8-39 months). Median age was 60 years (interquartile range, 51-66). Flap-related complications were found in 59 patients (68%), with minor recipient-site complications diagnosed in 33 patients (38%). In the short term, 15 patients experienced major recipient-site complications (17%), including flap separation (n = 7) and partial (n = 3) or complete necrosis (n = 4). Flap removal was required in 1 patient. Obesity was the single independent risk factor for short-term flap-related complications (p = 0.02). Hospital admission was significantly longer in patients with short-term major flap complications (median 65 days, p < 0.001) compared with patients without or with minor complications. There was no 90-day mortality. Patients who required flap reconstruction reported lower baseline quality-of-life scores than patients without flap reconstruction, but both recovered over time. In the long term, minor flap-related complications occurred in 12 patients, and 11 patients had major donor-site complications. Fourteen patients developed major recipient-site complications (16%), including sacral collections, enterocutaneous fistulas, perineal ulcer, or hernia. LIMITATIONS: This was a retrospective analysis of prospectively collected data. CONCLUSIONS: Vertical rectus abdominis myocutaneous flaps in pelvic exenteration surgery have a high incidence of morbidity that has significant impact on hospital stay and a temporary impact on quality of life. Flap reconstruction should be used selectively in pelvic exenteration surgery. See Video Abstract at http://links.lww.com/DCR/B274. COMPLICACIONES E IMPACTO EN LA CALIDAD DE VIDA DE LOS COLGAJOS MIOCUTÁNEOS DE MUSCULO RECTO DEL ABDOMEN EN CASOS DE RECONSTRUCCIÓN DE EXENTERACIÓN PÉLVICA: La exenteración pélvica (EP) para malignidad a veces requiere reconstrucción con colgajos musculares.El propósito del presente estudio fue investigar la morbilidad relacionada con los colagajos musculares.Revisión de una base de datos prospectiva de 2003-2016. Se evaluaron todas las historias clínicas, la correspondencia y los registros de seguimiento de pacientes ambulatorios hasta mayo de 2017.Unidad de referencia terciaria.Todos aquellas personas con cirugía de exenteración pélvica.Reconstrucción con colgajo miocutáneo de musculo recto vertical del abdomen.El resultado primario fueron las complicaciones relacionadas con el colgajo (a corto o largo plazo >3 meses). Los resultados secundarios fueron la estadía hospitalaria, la readmisión, la mortalidad y la calidad de vida (QOL; SF-36, FACT-C).De 519 pacientes sometidos a EP, 87 (17%) se sometieron a reconstrucción con colgajos miocutáneos. La mediana de seguimiento fue de 20 meses (RIC 8-39 meses). La mediana de edad fue de 60 años (IQR 51-66). Se encontraron complicaciones relacionadas con el colgajo en 59 pacientes (68%), con complicaciones menores en el sitio del receptor diagnosticadas en 33 pacientes (38%). A corto plazo, quince pacientes sufrieron complicaciones mayores en el sitio del receptor (17%), incluida la separación del colgajo (n = 7), necrosis parcial (n = 3) o necrosis completa (n = 4). Se requirió la extracción del colgajo en un paciente. La obesidad fue el único factor de riesgo independiente para complicaciones relacionadas con el colgajo a corto plazo (p = 0.02). El ingreso hospitalario fue significativamente mayor en pacientes con complicaciones de colgajos mayores a corto plazo (mediana 65 días p <0.001) en comparación con pacientes sin complicaciones menores o con complicaciones menores. No hubo mortalidad a los 90 días. Los pacientes que requirieron reconstrucción con colgajo informaron puntajes de calidad de vida basales más bajos que los pacientes sin reconstrucción con colgajo, pero ambos se recuperaron con el tiempo. A largo plazo, ocurrieron complicaciones menores relacionadas con el colgajo en 12 pacientes y 11 pacientes tuvieron complicaciones mayores en el sitio donante. Catorce pacientes desarrollaron complicaciones mayores en el sitio del receptor (16%), incluidas colecciones sacras, fístulas enterocutáneas, úlceras perineales o herniación.Análisis retrospectivo de datos recolectados prospectivamente.Los colgajos miocutáneos del musculo recto vertical del abdomen en casos de cirugía de exenteración pélvica tienen una alta incidencia de morbilidad conllevando a un impacto significativo en la estadía hospitalaria y un impacto temporal en la calidad de vida. Las reconstrucciones con colgajos deben aplicarse muy selectivamente en la cirugía de exenteración pélvica. Consulte Video Resumen en http://links.lww.com/DCR/B274.

Postoperative imaging following fetal open myelomeningocele repair: The clinical utility of magnetic resonance imaging and sonographic amniotic fluid volumes in detecting suspected hysterotomy scar dehiscence.

OBJECTIVES: Hysterotomy scar disruption, ranging from myometrial thinning to complete dehiscence, is a well-established complication of open-hysterotomy fetal myelomeningocele (MMC) repair. This study sought to (a) determine the feasibility of postoperative magnetic resonance imaging (MRI) in detecting signs of hysterotomy scar disruption and (b) identify the sonographic and clinical signs suggestive of subacute scar dehiscence, including decreasing amniotic fluid index (AFI) and uterine contractions, respectively. METHOS: A unique index case of suspected hysterotomy dehiscence following MMC repair prompted a retrospective review of 31 total open-hysterotomy fetal MMC repairs performed at our center, including 21 cases found to have intact hysterotomy scarring and 10 cases of non intact scarring detected at subsequent cesarean delivery. In each case, routine post operative MRI, performed 6 weeks after the MMC repair, was reviewed to evaluate the thickness of the hysterotomy site. Cases were also reviewed for sonographic and clinical patterns preceding delivery, including changes in AFI and the presence or absence of uterine contractions. RESULTS: Of the 31 total reviewed cases, 21 cases were found to have intact hysterotomy scar sites at the time of cesarean delivery. Among the intact cases, the net change in AFI from the time of MRI to delivery ranged from -45% to 47%, with a mean increase in fluid levels of 8% over an average of 5.6 weeks. The other 11 cases, including the index case, were found to have signs of scar disruption at delivery, including seven with thinned scar sites and four with grossly dehiscent sites. Amongst non-intact cases, AFI predominately decreased, with a net change ranging from -56% to 9% for a mean change of -24% over an average of 5.4 weeks. Regular uterine contractions close to the time of delivery occurred in 82% of the non intact cases. CONCLUSION: Hysterotomy scar disruption can rarely be detected by MRI following MMC repair. Decreasing AFI and contractions may serve as early warning signs of scar dehiscence and should be taken into consideration for obstetric management.

The elastic capacity of a tendon-repair construct influences the force necessary to induce gapping.

PURPOSE: Most biomechanical investigations of tendon repairs were based on output measures from hydraulic loading machines, therefore, accounting for construct failure rather than true gapping within the rupture zone. It was hypothesized that the elastic capacity of a tendon-repair construct influences the force necessary to induce gapping. METHODS: A tendon-repair model was created in 48 porcine lower hind limbs, which were allocated to three fixation techniques: (1) Krackow, (2) transosseous and (3) anchor fixation. Loading was performed based on a standardized phased load-to-failure protocol using a servohydraulic mechanical testing system MTS (Zwick Roell, Ulm, Germany). Rupture-zone dehiscence was measured with an external motion capture device. Factors influencing dehiscence formation was determined using a linear regression model and adjustment performed as necessary. A 3-mm gap was considered clinically relevant. Analysis of variance (ANOVA) was used for comparison between groups. RESULTS: The elastic capacity of a tendon-repair construct influences the force necessary to induce gapping of 3 mm (F3mm) [ß = 0.6, confidence interval (CI) 0.4-1.0, p < 0.001]. Furthermore, the three methods of fixation did not differ significantly in terms of maximum force to failure (n.s) or F3mm (n.s). CONCLUSION: The main finding of this study demonstrated that the higher the elastic capacity of a tendon-repair construct, the higher the force necessary to induce clinically relevant gapping. LEVEL OF EVIDENCE: Controlled biomechanical study.

The use of povidone-iodine and sugar solution in surgical wound dehiscence in the head and neck following radio-chemotherapy.

Povidone-iodine is known for successfully treating surgical wounds; the combination between povidone-iodine and sugar, also called Knutson's formula, has been proposed to improve wound healing. Currently, no studies have investigated the effects of Knutson's formula to treat defects in wound closure following radio-chemotherapy in the head and neck region. The aim of this study is to evaluate the efficacy of Knutson's formula in improving the wound-healing process in patients who underwent radio-chemotherapy after surgery for head and neck cancer. The study, conducted from August 2013 to January 2017, included a sample of 34 patients (25 males and 9 females; age range: 60-75 years) treated with radio-chemotherapy after head and neck cancer surgery. All patients suffered from defect of wound regeneration. Patients were randomly divided into two groups: patients in the study group (n = 18) were treated with Knutson's formula; patients in the control group (n = 16) were treated with traditional topical drugs. In the study group, 16 of 18 (88.9%) patients reached complete wound closure 1 month after treatment, with no wound infections. In the control group, only three patients (18.7%) showed complete wound closure within a month; in addition, one patient required systemic antibiotic treatment because of supra-bacterial infection of the wound. In our sample, the combination of povidone-iodine and sugar had a higher success rate compared with traditional topical treatment in the treatment of wound defect closure in oncological patients who underwent radio-chemotherapy.

A randomized controlled clinical trial comparing small buccal dehiscence defects around dental implants treated with guided bone regeneration or left for spontaneous healing.

PURPOSE: The aim of the present randomized controlled clinical study was to test whether small bony dehiscence defects (≤5 mm) left to heal spontaneously result in the same clinical and radiological outcome as defects treated with guided bone regeneration (GBR). MATERIALS AND METHODS: Twenty-two patients who received at least one implant with a small bony dehiscence defect were enrolled in the study. If the defect height was ≤5 mm, the site was randomly assigned to either the spontaneous healing (SH) group or the GBR group. In the SH group, the defect was left without any treatment. In the GBR group, the defects around the implants were grafted with deproteinized bovine bone mineral (DBBM) and covered with a native collagen membrane. Clinical and radiographic measurements were performed 6 months after implant placement with a reentry surgery and at the time of crown insertion and the subsequent follow-up appointments at 3, 6, 12 and 18 months after loading. For statistical analyses, the mixed linear model was applied for the clinical and radiographic measurements observed around the implants. Simple comparisons of the location of the measurements in the two independent groups are performed with the Mann-Whitney U-test. In addition, the mixed model assumptions were checked. RESULTS: The implant and crown survival rate 18 months after loading was 100%, revealing no serious biologic or prosthetic complication. The mean changes of the buccal vertical bone height between implant placement and reentry surgery after 6 months revealed a small bone loss of -0.17 ± 1.79 mm (minimum -4 mm and maximum 2.5 mm) for the SH group and a bone gain of 1.79 ± 2.24 mm (minimum of -2.5 mm and maximum of 5 mm) for the GBR group, respectively (P = 0.017). Radiographic measurements demonstrated a slight bone loss of -0.39 ± 0.49 mm for the SH group and a stable bone level of 0.02 ± 0.48 mm for GBR group after 18 months. All peri-implant soft tissue parameters revealed healthy tissues with no difference between the two groups. CONCLUSION: Small bony dehiscence defects left for spontaneous healing demonstrated high implant survival rates with healthy and stable soft tissues. However, they revealed more vertical bone loss at the buccal aspect 6 months after implant insertion and also more marginal bone loss between crown insertion and 18 months after loading compared to sites treated with GBR.

Impact of Metabolic Syndrome on the Morbidity and Mortality of Patients Undergoing Panniculectomy.

BACKGROUND: Metabolic syndrome (MetS) is defined as the concomitant disease process of obesity and at least two of the following variables: diabetes, hypertension, hypertriglyceridemia, or reduced high-density lipoprotein. These entities are well established as risk factors for complications following surgery. Obese patients are particularly prone to the development of MetS. The authors therefore aimed at elucidating the impact of MetS on the perioperative panniculectomy outcomes. METHODS: The American College of Surgeons National Surgical Quality Improvement Program database was analyzed for all primary procedures of panniculectomy from 2010 through 2015. The cases were stratified based on the presence or absence of MetS and evaluated for demographic data, intraoperative details, and their morbidity and mortality within 30 days after surgery. RESULTS: A total of 7030 cases were included in this study. Patients with MetS (6.2%) were of significantly worse health, required more emergency admissions (p = 0.022), longer hospitalization (p < 0.001), and more frequently inpatient procedures (p < 0.001) compared to the control group without MetS (3.8%). Plastic surgery was the predominant specialty operating on 79.5% of all cases. Surgical (23.3 vs. 8.7%) complications, readmission (8.7 vs. 3.0%), and reoperations (6.9 vs. 3.1%) rates were all significantly higher in patients with MetS that those without (p < 0.001). One fatality occurred in each cohort (0.23 vs. 0.02%, p = 0.010). CONCLUSION: Comorbidities are not uncommon in patients undergoing panniculectomy, especially in those diagnosed with MetS. Health-care providers need to be aware of the increased morbidity and mortality in this high-risk subgroup and need to consider preoperative optimization and management before proceeding with surgery. LEVEL OF EVIDENCE III: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Resolving Epibole With Polymeric Membrane Dressings in Home Care.

BACKGROUND: The management of chronic (nonhealing) wounds with epibole is challenging and costly, especially when the problem is not promptly identified or the patient is intolerant to conventional treatments. CASE DESCRIPTION: We describe the use of a polymeric membrane dressing (PMD) in 3 patients with chronic (nonhealing) wounds and epibole who were unable to be treated with traditional interventions such as silver nitrate or sharp debridement. Patient 1 was a 51 year-old male with a right foot stasis ulcer with 60% fibrin/slough to the wound bed, patient 2 was a 58-year-old female with a stage 4 pressure injury of the left hip with undermining, and patient 3 was a 62-year-old female with a dehisced abdominal surgical wound. CONCLUSION: The use of PMD, when applied using a specific technique, proved to be effective for resolving epibole in 3 patients with nonhealing wounds of differing etiologies. Based on these experiences, we postulate that topical therapy using a PMD may provide an effective alternative means for resolving epibole and promoting wound healing in patients unable to undergo surgical excision or chemical cauterization.

[Development and Validation of a Fully Automated, Experimental Set-Up for Ex-Vivo Burst Pressure Testing after Surgical Vessel Closure]. / Entwicklung und Validierung eines vollautomatischen, experimentellen Set-ups zur Ex-vivo-Berstungsdruckmessung nach chirurgischem Gefäßverschluss.

Background A growing number of operations are performed using minimally invasive techniques. Therefore, a lot of new requirements must be met by the staplers currently available. At the present time, the most widely used methods of minimally invasive vascular occlusion involve high-frequency energy, clips, and staplers. The most important quality parameter is burst pressure, which is measured with a variety of experimental set-ups, all of which are subject to criticism. With this study, we want to introduce a fully automated vascular burst pressure measuring system that largely mimics physiological conditions. An important feature of this set-up is the detection of very early leakage from the staple line (FAIR Leakage = First Appearance of Leakage requiring Intervention). Material and Methods Burst pressure was measured in vessel segments of porcine common carotid arteries. For vascular occlusion, we used the stapler device Micro Cutter XCHANGE® by DexteraSurgical. Prior to closure, the vessel was filled to a pressure of 80 mmHg. The pressure was increased at a defined flow rate. Burst pressure was defined as staple line leakage requiring intervention. Results and Validation 30 staple lines were examined. The average burst pressure visually determined by two independent investigators was 515.8 mmHg ± 236.3 mmHg. Maximal burst pressure was 911 mmHg, and minimal burst pressure 80 mmHg. The average burst pressure detected electronically was 511.8 mmHg ± 239.1 mmHg. Statistically, there was a highly significant correlation of visually and electronically detected burst pressures. Conclusion This is the first experimental set-up for a systematic burst pressure test that is fully automated and therefore eliminates any bias related to the investigator. The experimental set-up with a defined intravascular pressure prior to closure and the use of a liquid with blood-like viscosity enabled us to largely mimic intraoperative conditions. Since burst pressure is not defined as a complete rupture of the staple line, but as the moment of first occurrence of leakage requiring intervention, the results can be transferred into daily surgical practice.

Evaluation of mechanical closure resistance of sutureless vitrectomy sclerotomies after conjunctival cauterization with bipolar diathermy forceps.

BACKGROUND: Suturing is the most widely used technique to close leaking sclerotomies after transconjunctival sutureless vitrectomy (TSV). However, with the aim of avoiding the disadvantages caused by conjunctival stitches, there have been described other closure techniques, such as the cauterization of the conjunctiva placed over the incisions. To continue advancing knowledge of the incisional occlusion effect achieved by conjunctival diathermy, it would be also interesting to study the wound closure resistance obtained under intraocular pressure (IOP) changes, given that in the early postoperative period eyes are subjected to pressure stress. In our study, we compare the mechanical resistance observed in sclerotomies treated with bipolar diathermy after TSV compared to that found in incisions in which cauterization was not performed. METHODS: This was an experimental, randomized, and observer-masked study in which 23-gauge TSV was performed in 80 cadaveric pig eyes. Once each vitrectomy was finished, cauterization was performed with bipolar diathermy forceps on the conjunctiva placed over one of the superior sclerotomy sites; no maneuver was performed over the other superior incision. IOP was gradually increased by means of the vitrectomy system (Accurus; Alcon Laboratories, TX) until one of the superior sclerotomies opened, allowing internal ocular solution to escape. RESULTS: In 35 % of cases (28 of 80 eyes), sclerotomies subjected to diathermy allowed intraocular fluid escape first (p = 0.01). When comparing opening pressure values, cauterized incisions leaked at significantly higher pressure levels than those in which diathermy was not applied (p < 0.001). CONCLUSIONS: Bipolar diathermy on sutureless sclerotomies has demonstrated to be, in our experimental model, an effective method for increasing the sclerotomy closure resistance. Although its use in vitrectomized eyes has previously been described, our study is the first to analyze the response of cauterized sclerotomies to IOP increases.

Collagen crosslinking in the management of leaking cystic blebs: a prospective study.

PURPOSE: To evaluate the effectiveness and safety of collagen crosslinking for leaking cystic blebs. METHODS: A prospective study was conducted on subjects with cystic bleb leaks without indications for urgent surgical intervention. Collagen crosslinking with riboflavin 0.1 % and ultraviolet A irradiation for 30 min was applied to the cystic bleb surface in five patients. Subjects were followed up for at least 20 weeks (mean: 35.5 ± 11.5 weeks) to monitor the length of time to the cessation of bleb leak, as well as visual acuity, intraocular pressure, and the presence of adverse effects arising from the treatment. RESULTS: Results showed that a single session of collagen crosslinking was effective in stopping cystic bleb leak. In two of the five subjects, the bleb leak subsided 1 week post-treatment, in one patient after 2 weeks, and in the two more complicated cases, after 4 weeks. This effect was maintained for a mean period of 33.5 ± 10.2 weeks after bleb leak cessation. Treatment was effective even in patients with friable conjunctiva following multiple surgical interventions and severe leak, although a longer period was needed for resolution of the bleb leak. The intraocular pressure and visual acuity were largely stable before and after treatment. No side effects or complications arose from this treatment. CONCLUSIONS: We recommend a trial of collagen crosslinking on leaking cystic blebs without indications for immediate surgical interventions. It is a relatively easy, non-invasive, pain-free, and potential repeatable procedure for treating leaking cystic blebs, with the aim of strengthening the underlying pathological conjunctiva.

Infliximab treatment reduces tensile strength in intestinal anastomosis.

BACKGROUND: The antitumor necrosis factor (infliximab [IFX]) has gained widespread use in the treatment of inflammatory bowel disease. However, several patients must undergo surgical treatment due to treatment failure and there is a potential risk that preoperative IFX treatment may have a negative effect on the healing process in intestinal anastomosis. The objective of this study was to examine the effect of repeated IFX treatment on anastomotic strength and degree of inflammation in the anastomotic line in the small intestine of rabbits. METHODS: Thirty-two rabbits were randomized (2:1) to receive either repeated IFX treatment or placebo. On day 15, three separate end-to-end anastomoses were performed on the jejunum. On postoperative day 5, tensile strength and bursting pressure for the anastomoses were tested and histologic changes examined. RESULTS: We found a significantly reduced tensile strength in the IFX group (1.94 ± 0.44 N) compared with the placebo group (3.33 ± 0.39 N), (P < 0.001). Calculation of Spearman correlation coefficients showed a positive significant correlation between minimal tensile strength and serum values of IFX (coefficient = -0.63; P = 0.003) as well as number of sutures in the tested anastomosis (coefficient = 0.51; P = 0.024). The general histologic score was significantly higher in the placebo group (5.00 ± 1.26 versus 3.31 ± 1.65, P = 0.03). CONCLUSIONS: Repeated high-dose IFX treatment reduces tensile strength significantly in rabbits and should be investigated further as a potential risk factor of anastomotic dehiscence in inflammatory bowel disease surgery.

Wound-related complications and clinical outcomes following open globe injury repair.

BACKGROUND: Careful surgical management of traumatic wounds is important in open globe injury repair. This study examines the clinical outcomes following repair of open globe injuries with particular focus on wound-related issues. DESIGN: Retrospective, cohort study of consecutive open globe injuries presenting to a tertiary referral eye hospital from 1 January 2009 to 31 December 2011. PARTICIPANTS: A total of 267 eyes of 263 patients, mainly male (82.5%) with a mean age of 44.8 (range: 4-97) years. Average follow up was 6.9 months. METHODS: All cases classified according to Ocular Trauma Classification Group. MAIN OUTCOME MEASURES: Visual outcomes, risk factors for and rates of postoperative complications and endophthalmitis. RESULTS: There were 83 globe ruptures, 182 penetrating and 2 perforating eye injuries, of which 43 cases had intraocular foreign body. Factors contributing to final visual acuity (VA) <6/60 were poor presenting VA (odds ratio [OR] = 16.0, 95% confidence interval [CI]: 4.81-53.1), globe rupture (OR = 4.64, [1.99-10.8]), retinal detachment (OR = 3.40, [1.19-9.74]) and age ≥50 (OR = 2.45, [1.05-5.74]). Wound leak occurred in 44 eyes (16%). Of these, 18 (41%) proceeded to re-suturing. Factors contributing to wound leak were stellate-shaped wound (OR = 3.28, [1.39-7.73]) and delayed presentation (OR = 2.80, [1.02-7.71]). Ten eyes (3.7%) developed endophthalmitis. Factors associated with endophthalmitis were delayed presentation (OR = 8.91, [1.71-46.6]), microbial keratitis (OR = 12.5, [1.85-85.0]) and lens capsule breach (OR = 12.4, [1.85-83.1]). CONCLUSIONS: Wound leak is an important postoperative complication of open globe injury repair. Delayed presentation is an important risk factor for postoperative wound leak and endophthalmitis. Prompt and meticulous wound management of open globe injury may reduce these complications.

[Postoperative wound complications in cardiosurgery].

Presented in the article are the results of examination and treatment of 65 patients with infectious wound complications of the sternotomic injury after open heart surgery. The main risk factors for their development in our patients were as follows: obesity, chronic obstructive pulmonary disease, diabetes mellitus, severe heart failure, prolonged operation, sternal instability. The leading pathogenic microorganisms were Gram positive staphylococci. Treatment varied from prolonged antibiotic therapy with surgical debridement of the wound to subtotal resection of the sternum with various plastic reconstructive interventions. The scope of treatment was determined by the type and severity of infectious wound complications. Due to lack of standardized approaches in diagnosis, treatment and prevention this problem remains to be of current importance.

[Risk factors for aerostasis failure in case of lung resection].

The results of risk factors analysis of aerostasis failure in 141 patients are presented in the article. All patients were operated in the A.V. Vishnevskogo Institute of Surgery at the period from January 2009 to December 2010. During statistical analysis it was considered surgeries volume, presence of emphysema, respiratory function etc. Also it was defined the dependence of venting duration in patients with residual pleural cavity and long aerostasis failure.

Early laparotomy wound failure as the mechanism for incisional hernia formation.

BACKGROUND: Incisional hernia is the most common complication of abdominal surgery leading to reoperation. In the United States, 200,000 incisional hernia repairs are performed annually, often with significant morbidity. Obesity is increasing the risk of laparotomy wound failure. METHODS: We used a validated animal model of incisional hernia formation. We intentionally induced laparotomy wound failure in otherwise normal adult, male Sprague-Dawley rats. Radio-opaque, metal surgical clips served as markers for the use of x-ray images to follow the progress of laparotomy wound failure. We confirmed radiographic findings of the time course for mechanical laparotomy wound failure by necropsy. RESULTS: Noninvasive radiographic imaging predicts early laparotomy wound failure and incisional hernia formation. We confirmed both transverse and craniocaudad migration of radio-opaque markers at necropsy after 28 d that was uniformly associated with the clinical development of incisional hernias. CONCLUSIONS: Early laparotomy wound failure is a primary mechanism for incisional hernia formation. A noninvasive radiographic method for studying laparotomy wound healing may help design clinical trials to prevent and treat this common general surgical complication.

Development of an animal model to investigate optimal laparoscopic trocar site fascial closure.

BACKGROUND: The rate of hernia formation after closure of 10-12 mm laparoscopic trocar sites is grossly under-reported. Using an animal model, we have developed a method to assess trocar site fascial dehiscence and the strength of different methods of fascial closure. MATERIALS AND METHODS: Pigs (n = 9; 17 ± 2.5 lbs) underwent placement of 12 mm Hasson trocars with pneumoperitoneum maintained for 1 h. Three closure techniques (Figure-of-eight; simple interrupted; pulley) were compared with no fascial closure and to native fascia at five randomly allocated abdominal wall midline locations. Necropsy was performed on the fourth postoperative d. Statistical comparisons of tensile strength and breaking strength based on closure type and trocar location were made using ANOVA with Tukey's tests. RESULTS: The mean (SD) force (Newtons) required for fascial disruption varied significantly with closure type [Native Fascia 170 (39), Figure-of-eight 169 (31), Pulley 167 (59), Simple Interrupted 151 (27), No Closure 108 (28)]; P = 0.007. The mean force required for fascial disruption was significantly increased for Native Fascia, Figure-of-eight, and Pulley relative to No Closure (P = 0.013, P = 0.015, P = 0.023, respectively). The mean (SD) force (in Newtons) required for fascial disruption also varied significantly with location of trocar [subxiphoid 181 (43), supraumbilical 151 (23), Umbilical 146 (23), infraumbilical 168 (62), suprapubic 120 (38)]; P = 0.03. The mean force for subxiphoid location was significantly increased relative to the suprapubic location (P = 0.021). CONCLUSIONS: We have developed a novel assessment model that reliably detects differences in fascial integrity after laparoscopic trocar placement and closure. This model will allow for further testing of various trocars and closure techniques, and facilitate hernia prevention strategies.

Healing of buccal dehiscence defects at implants installed immediately into extraction sockets - an experimental study in dogs.

AIM: To evaluate the influence of implant positioning into extraction sockets on bone formation at buccal alveolar dehiscence defects. MATERIAL AND METHODS: In six Labrador dogs the pulp tissue of the mesial roots of (4) P(4) was removed and the root canals were filled. Flaps were elevated bilaterally, the premolars hemi-sectioned and the distal roots removed. The implants were placed in contact with either the buccal (test site) or with the lingual (control site) bony wall of the extraction sockets. Healing abutments were affixed and triangular buccal bony dehiscence defects, about 2.7 mm deep and 3.5 mm wide, were then prepared. No regenerative procedures were done and a non-submerged healing was allowed. After 4 months of healing, block sections of the implant sites were obtained for histological processing and peri-implant tissue assessment. RESULTS: After 4 months of healing, the bony crest and the coronal border of osseointegration at the test sites were located 1.71 ± 1.20 and 2.50 ± 1.21 mm apically to the implant shoulder, respectively. At the control sites, the corresponding values were 0.68 ± 0.63 and 1.69 ± 0.99 mm, respectively. The differences between test and control reached statistical significance (P < 0.05). Residual marginal bone defects were found both at the test and control sites. A statistically significant difference between test and control sites was only found at the lingual aspects (depth 2.09 ± 1.01 and 1.01 ± 0.48 mm, respectively). Similar heights of the buccal biological width were observed at both sites (about 5.1 mm). CONCLUSIONS: The placement of implants in a lingual position of the extraction sockets allowed a higher degree of bone formation at buccal alveolar dehiscence defects compared with a buccal positioning.

Skin graft loss resulting from collagenase clostridium histolyticum treatment of Dupuytren contracture: case report and review of the literature.

Treatment of Dupuytren disease with collagenase clostridium histolyticum is increasingly used among hand surgeons. Although it is generally safe and efficacious, complications related to enzymatic fasciotomy occur. Postapproval surveillance and communication among hand surgeons continues to refine the indications, contraindications, and complications recognized in the treatment of Dupuytren disease with enzymatic therapy. Major treatment-related adverse events previously reported include flexor tendon rupture and complex regional pain syndrome. We report a patient who experienced total loss of a well-established volar ring finger skin graft following collagenase injection and propose a potential mechanism of vulnerability. This case may illustrate the susceptibility of type I collagen, which is uniformly present in a healed skin graft bed, to degradation with collagenase. We propose a cautious approach when considering treatment of a Dupuytren cord with collagenase in the presence of an overlying skin graft, regardless of the age of the graft.

Robotic repair of uterine dehiscence.

BACKGROUND AND OBJECTIVES: During the past few decades, there has been a significant increase in the number of cesarean deliveries, and thus an increase in the number of complications. A common complication of multiple cesarean deliveries is symptomatic uterine scar dehiscence, for which there are no treatment guidelines available. We report a case of uterine scar dehiscence-the repair of it by robotic surgery-and review the literature on this defect. CASE: The patient was a 39-year-old woman, gravida 4 para 2022, complaining of persistent vaginal spotting for the prior 5 months with a history of a cesarean delivery 3 months before the onset of the symptoms. DISCUSSION: We report a case of a successful robotic repair of a symptomatic cesarean scar defect. CONCLUSION: We propose further studies that include more patients so this technique may become the standard for cesarean scar defect.