Prophylactic retrorectus mesh versus no mesh in midline emergency laparotomy closure for prevention of incisional hernia (PREEMER): study protocol for a multicentre, double-blinded, randomized controlled trial.

BACKGROUND: Despite the fact that emergency midline laparotomy is a risk factor for an incisional hernia, active research on hernia prevention in emergency settings is lacking. Different kinds of meshes and mesh positions have been studied in elective abdominal surgery, but no randomized controlled trials in emergency settings have been published thus far. METHOD: The PREEMER trial (registration number NCT04311788) is a multicentre, patient- and assessor-blinded, randomized controlled trial to be conducted in six hospitals in Finland. A total of 244 patients will be randomized at a 1 : 1 ratio to either the retrorectus mesh group, featuring a self-gripping prophylactic mesh, or to the no mesh (control) group, both closed by small-stitch 4 : 1 closure with continuous slowly absorbable monofilament suturing. The primary outcome of the PREEMER trial is the incidence of incisional hernia 2 years after surgery, which will be detected clinically and/or radiologically. Secondary outcomes are the Comprehensive Complication Index score, incidence of surgical-site infections and fascial dehiscence within 30 days of surgery; the incisional hernia repair rate and mesh- or hernia-related reoperations within the 2- and 5-year follow-ups; the incidence of incisional hernia within the 5-year follow-up; and quality of life measured by RAND-36, the Activities Assessment Scale and the PROMIS questionnaire within 30 days and 2 and 5 years from surgery. Additionally, health-economic explorative measures will be explored. CONCLUSION: The PREEMER trial will provide level 1 evidence on incisional hernia prevention in an emergency setting. REGISTRATION NUMBER: NCT04311788 (http://www.clinicaltrials.gov). Registered 7 March 2020.

Laparoscopic versus hybrid approach for treatment of incisional ventral hernia: a prospective randomised multicentre study, 1-year results.

PURPOSE: Laparoscopic incisional ventral hernia repair (LIVHR) is often followed by seroma formation, bulging and failure to restore abdominal wall function. These outcomes are risk factors for hernia recurrence, chronic pain and poor quality of life (QoL). We aimed to evaluate whether LIVHR combined with defect closure (hybrid) follows as a diminished seroma formation and thereby has a lower rate of hernia recurrence and chronic pain compared to standard LIVHR. METHODS: This study is a multicentre randomised controlled clinical trial. From November 2012 to May 2015, 193 patients undergoing LIVHR for primary incisional hernia with fascial defect size from 2 to 7 cm were recruited in 11 Finnish hospitals. Patients were randomised to either a laparoscopic (LG) or a hybrid (HG) repair group. The main outcome measure was hernia recurrence, evaluated clinically and radiologically at a 1-year follow-up visit. At the same time, chronic pain scores and QoL were also measured. RESULTS: At the 1-year-control visit, we found no difference in hernia recurrence between the study groups. Altogether, 11 recurrent hernias were found in ultrasound examination, producing a recurrence rate of 6.4%. Of these recurrences, 6 (6.7%) were in the LG group and 5 (6.1%) were in the HG group (p > 0.90). The visual analogue scores for pain were low in both groups; the mean visual analogue scale (VAS) was 1.5 in LG and 1.4 in HG (p = 0.50). QoL improved significantly comparing preoperative status to 1 year after operation in both groups since the bodily pain score increased by 7.8 points (p < 0.001) and physical functioning by 4.3 points (p = 0.014). CONCLUSION: Long-term follow-up is needed to demonstrate the potential advantage of a hybrid operation with fascial defect closure. Both techniques had low hernia recurrence rates 1 year after operation. LIVHR reduces chronic pain and physical impairment and improves QoL. TRIAL REGISTRY: Clinical trial number NCT02542085.

Non-specific abdominal pain remains as the most common reason for acute abdomen: 26-year retrospective audit in one emergency unit.

OBJECTIVE: Distribution of diagnoses causing acute abdominal pain (AAP) may change because of population aging, increased obesity, advanced diagnostic imaging and changes in nutritional habits. Our aim was to evaluate the diagnoses causing AAP during a 26-year period. MATERIALS AND METHODS: This was a retrospective cross-sectional cohort study in one emergency department (ED) covering population about 250,000. All patients admitted to the ED in 1986, 2003 and 2012 were evaluated from hospital electronic database. Demographic data, utilization of diagnostic tests, surgical treatment and discharge diagnosis were analyzed. Statistical data of population aging, obesity and alcohol consumption during 1980-2012 were obtained from national registers. RESULTS: The AAP patients represented 10-20% of our total ED census. The most common causes of AAP were nonspecific abdominal pain (NSAP, 31-37%), acute appendicitis (11-23%), biliary disease (9-11%), bowel obstruction (5-7%), acute pancreatitis (4-8%) and acute diverticulitis (1-7%). The percentage of NSAP remained highest throughout the study period. Decrease in the number of acute appendicitis (from 23 to 11%; p < .0001), increase in acute diverticulitis (from 1 to 5%; p ≤ .0001) and acute pancreatitis (from 4 to 7%; p = .0273) was observed over time. The utilization of diagnostic imaging increased significantly (CT from 2 to 37% and US from 4 to 38%, p < .0001). Hospital mortality was very low (1-2%). CONCLUSIONS: NSAP is still the main differential diagnostic problem in the ED. Except acute appendicitis, distribution of specific diagnoses causing AAP remained rather stable through 26-year audit.

Laparoscopic versus Hybrid Approach for Treatment of Incisional Ventral Hernia.

BACKGROUND: The aim of this study was to compare the efficacy of a hybrid approach (HA) versus laparoscopy in reducing the risk of complications related to complex adhesiolysis in incisional ventral hernia repair (IVHR). METHODS: This study included 269 adult patients who underwent laparoscopic IVHR at the Oulu University Hospital, Finland during 2006-2012. Baseline, operative and postoperative data was collected and compared between the treatment groups; that is, a comparison was made between the laparoscopic approach (LA, 38 patients) and the hybrid approach (HA, 24 patients). RESULTS: In the LA group, 11 (28.9%) patients experienced postoperative complications. There were 4 undetected enterotomies that led to major complications, reoperations and one death. In the HA group, 6 (25%) patients experienced mild and moderate complications. During adhesiolysis, 4 enterotomies occurred but were immediately sutured without any complication. CONCLUSION: Adhesiolysis through a minimally invasive open technique may be associated with a lower risk of undetected enterotomy in patients with complex adhesions. In IVHR, the hybrid should be considered the operative method of choice when adhesions are foreseeable.

Complications in Laparoscopic Versus Open Incisional Ventral Hernia Repair. A Retrospective Comparative Study.

PURPOSE: The objective of the study was to evaluate peri- and postoperative outcomes, especially severe complications in adult incisional ventral hernia repair performed by open or laparoscopic surgery. METHODS: Adult patients who were operated for incisional ventral hernias in two tertiary hospitals in Finland during 2006-2012 were included in the study. Clinical data were collected from patient registers. Peri- and postoperative parameters were gathered and compared between open and laparoscopic groups. Postoperative complications were analyzed, and the focus was on major complications. RESULTS: The results of 818 hernioplasties were evaluated: 291 (36.3 %) open and 527 (63.7 %) laparoscopic operations. In the laparoscopic group, the number of patients with postoperative complications was slightly lower (18.4 vs. 23.4 %, p = 0.090), and there were significantly fewer surgical site infections (3.2 vs. 8.6 %, p = 0.001). Twelve major complications occurred. In the laparoscopic group, four of the five major complications were consequences of undetected enterotomies, leading to reoperations, longer hospital stays, and death of one patient. Major complications in the open group consisted of four cardiac infarctions and three septic surgical site infections. Complex adhesions had a significant influence on major complications, enterotomies, and surgical site infections. Laparoscopic operations had a lower mean blood loss (13 vs. 31.5 ml, p = 0.028), and hospital stay (4 vs. 6 days, p = 0.001) compared to open operations. CONCLUSIONS: Laparoscopic incisional ventral hernia repair has a low rate of postoperative complications but it is associated with an increased risk of undetected enterotomies, in particular during cases involving adhesiolysis.