The Role of DAMPS in Burns and Hemorrhagic Shock Immune Response: Pathophysiology and Clinical Issues. Review.

Severe or major burns induce a pathophysiological, immune, and inflammatory response that can persist for a long time and affect morbidity and mortality. Severe burns are followed by a "hypermetabolic response", an inflammatory process that can be extensive and become uncontrolled, leading to a generalized catabolic state and delayed healing. Catabolism causes the upregulation of inflammatory cells and innate immune markers in various organs, which may lead to multiorgan failure and death. Burns activate immune cells and cytokine production regulated by damage-associated molecular patterns (DAMPs). Trauma has similar injury-related immune responses, whereby DAMPs are massively released in musculoskeletal injuries and elicit widespread systemic inflammation. Hemorrhagic shock is the main cause of death in trauma. It is hypovolemic, and the consequence of volume loss and the speed of blood loss manifest immediately after injury. In burns, the shock becomes evident within the first 24 h and is hypovolemic-distributive due to the severely compromised regulation of tissue perfusion and oxygen delivery caused by capillary leakage, whereby fluids shift from the intravascular to the interstitial space. In this review, we compare the pathophysiological responses to burns and trauma including their associated clinical patterns.

Chevrel technique for ventral incisional hernia. Is it still an effective procedure?

BACKGROUND: Incisional hernia still represents the most frequent late complication of abdominal surgery. After a direct repair, in literature is reported a recurrence rate ranging from 31 to 49%, meanwhile after a prosthetic repair such values were much lower, with a recurrence rate up to 10%. The sites of prosthetic placement in the abdominal wall are premusculo-aponeurotic (onlay, or Chevrel technique), retromuscular-prefascial and preperitoneal (Rives technique, Stoppa technique), whereas intraperitoneal insertion can be done with open or laparoscopic surgery. The aim of this study was to evaluate the immediate and late postoperative results in patients treated with a Chevrel technique for ventral incisional hernia. METHODS: A retrospective review was conducted on the medical records of patients undergoing ventral hernia repair between January 2008 and December 2018 at the Emergency Surgery Unit of the Careggi University Hospital in Florence. RESULTS: Between January 2008 and December 2018 at the Emergency Surgery Unit of the Careggi University Hospital in Florence, 461 patients (245 male, 216 female) with a mean age of 61,52 years were submitted to ventral incisional hernia repair with a Chevrel technique. The mean operatory time was 95.29 min (±50.48) and in 72 patients (15.61%) human fibrin glue was vaporized under the mesh using a spray device. Mean postoperative hospital stay was 5 days and all drain tubes were removed after 7.1 days as mean (±4.3). No intraoperative mortality nor postoperative mortality was reported. In our experience the Chevrel technique for ventral incisional hernia show a recurrence rate (3.2%). Parietal complications observed were seroma in 7.1% of patients, hematoma in 4.7%, localized skin necrosis in 5.2%, surgical site infection in 6.7%, data comparable with the results reported in the other studies. CONCLUSIONS: Most of the objections to the Chevrel procedure focus on the parietal complications and risk of infection. Chevrel procedure cannot be considered an obsolete intervention, in our series, results were very satisfactory in both immediate and late follow-up; moreover this technique is safe and easy to perform.

Obstructive left side colon cancer: time for a tailored operative approach?

BACKGROUND: Colorectal cancer (CRC) obstruction is frequent but doubts remain on the best treatment. The aim of this study is to analyze the different operative approach used for CRC treatment and evaluate the outcomes for the different cases. METHODS: Patients were collected from January 2014 to December 2019 and divided in four groups: two "P" groups, namely the Hartmann's procedure (PH) group and the primary anastomosis (PA) group, and two "S" groups, namely the deviating stoma (SD) group and the self-expanding metallic stent (SS) group. The main endpoints were the quality of life and the oncologic safety. RESULTS: One hundred and eight patients were enrolled. The mean follow-up time was 39 months. The stomas were performed less frequently in SS but lasted more in that group. Only 45% underwent reversal surgery. Cumulative operating time was greater in S versus P groups. The rate of major complications was similar. PA had greater overall survival and disease-free survival rates than PH. CONCLUSIONS: The various options of treatment should have different indications: primary anastomosis in stable patients, Hartmann in critical cases, SEMS for palliative intent and stoma when neo-adjuvant therapy is needed.

A minimally invasive approach with a 3d imaging system for the treatment of esophageal perforation due to Boerhaave syndrome.

Boerhaave's syndrome is a rare life-threatening condition that requires urgent surgical management. There are various methods of managing it, with the main principles of limiting sepsis, draining the area and maintaining nutrition. Although the gold standard is open thoracotomy and/or laparotomy, mostly in patients with sepsis, we present a case of a 53-year-old man treated with a combination of laparoscopic suture (3D imaging system) of the oesophageal perforation site, decompressive percutaneous endoscopic gastrostomy and feeding jejunostomy. We conclude that this approach is a safe and a viable option in the management of Boerhaave syndrome in a septic patient presenting early. KEY WORDS: Boerhaave's syndrome, Laparoscopy, Minimally invasive surgery, Oesophageal Rupture, Surgery, 3D-laparoscopy.

Combination of diagnostic laparoscopy and intraoperative indocyanine green fluorescence angiography for the early detection of intestinal ischemia not detectable at CT scan.

INTRODUCTION: Acute mesenteric ischemia is the most severe gastrointestinal complication of acute aortic dissection. The timing of diagnosis is of major importance, in fact the recognition of acute mesenteric ischemia often occurs too late due to the presence of unspecific symptoms and lack of reliable exams. Recently, indocyanine green fluorescence angiography has been adopted in order to measure blood perfusion and microcirculation. PRESENTATION OF CASE: We decided to perform a diagnostic laparoscopy with the support of intra-operative near-infrared indocyanine green fluorescence angiography, in order to detect an initial intestinal ischemia in a 68-year-old patient previously treated with a TEVAR procedure for a type-B aortic dissection. The fluorescence system demonstrated an hypoperfused area in the ascending colon, therefore an ileocholic resection was thus performed. Opening the operatory specimen, the mucosa of the colon appeared totally ischemic, whilst the serosa was normal. DISCUSSION: When ischemia occurs, the oxygen supply is interrupted, hence the necrosis of the enteral mucosa occurs within 3h, whilst the necrosis of the full thickness of the bowel wall occurs within 6h. A diagnosis during these "golden hours" is of major importance for a successful treatment. CONCLUSION: The combination of laparoscopy and UV light and fluorescein dye should be considered as an invaluable diagnostic procedure for the diagnosis of early stage acute bowel ischemia which is not visible at instrumental examinations nor with diagnostic laparoscopy.

A novel "salvage" indication to intestinal derotation procedure: reconstruction after duodenopancreatectomy.

PATIENT: Male, 77. FINAL DIAGNOSIS: Pancreatic tumor. SYMPTOMS: Jaundice. MEDICATION: -. CLINICAL PROCEDURE: Intestinal derotation procedure. SPECIALTY: General surgery. OBJECTIVE: Rare disease. BACKGROUND: The purpose of the present paper is to stress the relevance for surgeons of being familiar with the procedure of intestinal derotation. This procedure is usually ignored by atlases of surgical technique and only few dedicated papers have been published since its first descriptions both in the U.S. and Europe more than 50 yrs ago. CASE REPORT: The occasion for this message has been provided by a recent application of this procedure, which has also provided a brand new indication to it. In the case which is reported in the paper the reconstruction, after the resection phase of Whipple procedure, appeared impossible. As a matter of fact, a lipomatosis of the jejunal mesentery reaching up the vasa recta made impossible to raise up the jejunum in order to perform anastomoses with the remaining pancreas and the bile duct. After a minute in which we felt lost, intestinal derotation solved the problem. CONCLUSIONS: In conclusion, intestinal derotation represents a valuable technical tool, which in very selected cases may be helpful in solving otherwise insoluble surgical problems. Therefore, it seems to be a necessary part of the armamentarium of any good surgeon.