Publications by authors named "Ulf Petersson"

Background: The aim was to investigate whether adding a reinforced tension-line (RTL) suture to a standard 4 : 1 small-bite closure would reduce the incidence of incisional hernia after colorectal cancer surgery.

Methods: Patients aged at least 18 years, who were scheduled for elective colorectal cancer surgery through a midline incision at two Swedish hospitals (2017-2021), were randomized in a 1 : 1 ratio to either fascial closure with RTL and 4 : 1 small-bite closure with polypropylene sutures (RTL group) or 4 : 1 small-bite closure with polydioxanone suture alone (PDS group). The primary outcome was CT-detected incisional hernia 1 year after surgery.

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Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) entails several risk factors for incisional hernia (IH). A few reports available showing incidences between 7% and 17%. At our institution fascia closure has been performed in a 4:1 suture to wound length manner, with a continuous 2-0 polydiaxanone suture (PDS-group) or with a 2-0 polypropylene suture preceded by a reinforced tension line (RTL) suture (RTL-group).

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Background: The open abdomen is an innovation that greatly improved surgical understanding of damage control, temporary abdominal closure, staged abdominal reconstruction, viscera and enteric fistula care, and abdominal wall reconstruction. This article provides an evidence-informed, expert, comprehensive narrative review of the open abdomen in trauma, acute care, and vascular and endovascular surgery.

Methods: A group of 12 international trauma, acute care, and vascular and endovascular surgery experts were invited to review current literature and important concepts surrounding the open abdomen.

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Background: Pain at sexual activity induced by an inguinal hernia or as a cause of its repair is not thoroughly studied. Reported frequencies are between 25% and 30% preoperatively and 10% and 15% postoperatively. The primary aim was to analyze pain at sexual activity at 1 year comparing total extraperitoneal with Lichtenstein repair in a randomized setting.

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Article Synopsis
  • This text discusses various techniques for temporary abdominal closure, emphasizing the VAWCM technique, which has been recognized for achieving high fascial closure rates with minimal complications.* -
  • A systematic review was conducted analyzing 15 relevant studies involving 600 patients treated with the VAWCM technique, assessing short and long-term outcomes such as fascial closure rates and complications.* -
  • The results indicated an 83.5% fascial closure rate, a 72% in-hospital survival rate, and a notable incidence of long-term incisional hernias, with patients reporting lower quality of life scores in physical health compared to the general population.*
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Background: Diastasis of the rectus abdominis muscle is a common condition. There are no generally accepted criteria for diagnosis or treatment of diastasis of the rectus abdominis muscle, which causes uncertainty for the patient and healthcare providers alike.

Methods: The consensus document was created by a group of Swedish surgeons and based on a structured literature review and practical experience.

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Background: Chronic postoperative pain after inguinal hernia surgery can affect sexual function. A new short form questionnaire for inguinal hernia pain related sexual dysfunction (SexIHQ) was introduced and applied to a register based cohort of total extra-peritoneal hernioplasty (TEP) operated patients.

Methods: Sexually active men, 30-60 years old, recorded in the Swedish Hernia Register for a primary inguinal hernia TEP operation were included.

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Background: The aim of this paper was to review the literature on vacuum-assisted wound closure and mesh-mediated fascial traction (VAWCM) in open abdomen therapy. It was designed as systematic review of observational studies.

Methods: A Pub Med, EMBASE and Cochrane search from 2007/01-2016/07 was performed combining the Medical Subject Headings "vacuum", "mesh-mediated fascial traction", "temporary abdominal closure", "delayed abdominal closure", "open abdomen", "abdominal compartment syndrome", "negative pressure wound therapy" or "vacuum assisted wound closure".

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Background: Mesh fixation is used to prevent recurrence at the potential risk for chronic pain in TEP. The aim was to compare the impact of permanent fixation (PF) with no fixation (NF)/nonpermanent fixation (NPF) of mesh on chronic pain after TEP repair for primary inguinal hernia.

Methods: Men, 30 to 75 years old, consecutively registered in the Swedish Hernia Register for a TEP primary repair in 2005 to 2009, were included in a mail survey using SF-36 and the Inguinal Pain Questionnaire (IPQ).

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Objective: Patients suffering from an incisional hernia after abdominal surgery have an impaired quality of life (QoL). Surgery aims to improve QoL with a minimum risk of further complications. The aim was to analyze QoL, predictors for outcome, including recurrence and reoperation rates during the first postoperative year.

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Purpose: Laparoscopic transcystic common bile duct (CBD) exploration is a safe single-stage procedure for CBD stone clearance. The aim of this report was to describe our experience of transcystic laser lithotripsy in patients with complex CBD stones.

Materials And Methods: Data from consecutive patients treated with transcystic holmium:YAG laser lithotripsy was collected and analyzed concerning age, sex, number of stones, duct clearance, conversions, operation time, complications, and hospital stay.

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Background: Classification of the open abdomen (OA) status is essential for clinical studies on the subject and may help to improve OA therapy. This is a validity and reliability analysis of the OA classification proposed by the World Society of the Abdominal Compartment Syndrome in 2013.

Methods: Prospective data on 111 consecutive OA patients treated with vacuum-assisted wound closure and mesh-mediated fascial traction (VAWCM) was used.

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Objective: : The aim of the trial was to compare laparoscopic technique with open technique regarding short-term pain, quality of life (QoL), recovery, and complications.

Background: : Laparoscopic and open techniques for incisional hernia repair are recognized treatment options with pros and cons.

Methods: : Patients from 7 centers with a midline incisional hernia of a maximum width of 10 cm were randomized to either laparoscopic (LR) or open sublay (OR) mesh repair.

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Background: This phase II randomized, placebo-controlled study was conducted to evaluate efficacy and safety of radium-223 in patients with castration-resistant prostate cancer (CRPC) and painful bone metastases. Twelve- and 18-month survival results were reported previously. Here we report 24-month overall survival (OS) and safety data from the period 12 to 24 months after the first injection of study medication.

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Intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) are commonly encountered in nontrauma surgical patients. Depending on the etiology of the patient's surgical illness (ruptured abdominal aortic aneurysm, acute pancreatitis, burns, etc.), both the incidence and mortality of IAH/ACS may be quite high.

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Background: Topical negative pressure (TNP) therapy is increasingly used in open abdomen management. It is not known to what extent this pressure propagates through the dressing to the bowel surface, potentially increasing the risk of bowel fistula formation. The present study in a porcine model was designed to evaluate pressure propagation.

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Neurofibromatosis is associated with mid-aortic dysplasia, renal artery aneurysms and renal artery ostial stenosis, or occlusions in about 1% of cases. We describe a novel approach to recanalize an occluded renal artery in a 10-year-old girl with neurofibromatosis and difficulty in pharmacologically controlling her hypertension. Normally, when reconstruction is required, an open operative technique is used.

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Background: Open abdomen (OA) treatment often results in difficulties in closing the abdomen. Highest closure rates are seen with the vacuum-assisted wound closure (VAWC) technique. However, we have experienced occasional failures with this technique in cases with severe visceral swelling needing longer treatment periods with open abdomen.

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Background: The alpha-emitter radium-223 ((223)Ra) is a bone-seeking radionuclide studied as a new treatment for patients with bone metastases from hormone-refractory prostate cancer. We aimed to study mature outcomes from a randomised, multicentre, phase II study of (223)Ra.

Methods: Patients with hormone-refractory prostate cancer and bone pain needing external-beam radiotherapy were assigned to four intravenous injections of (223)Ra (50 kBq/kg, 33 patients) or placebo (31 patients), given every 4 weeks.

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Article Synopsis
  • This study aims to create a new assay for the human trypsinogen activation peptide (TAP) and characterize TAP-like immunoreactivity in urine from acute pancreatitis patients, since previous studies relied solely on one type of assay without thorough characterization.* -
  • Researchers developed antibodies against the TAP octapeptide APFD4K and used gel filtration to analyze immunoreactivity in human pancreatic juice before and after activating trypsinogen.* -
  • Results showed that after trypsinogen activation, TAP levels initially increased in pancreatic juice but decreased over time; low TAP levels were found in urine, primarily consisting of the pentapeptide D4K, suggesting the need for careful interpretation of TAP measurements in clinical settings.*
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Introduction: Endoscopic retrograde cholangiopancreatography (ERCP)-induced pancreatitis (EIP) provides an opportunity to study different pathophysiologic events early in the course of acute pancreatitis.

Aims: To investigate whether the leakage of pancreatic proenzymes (anionic trypsinogen), pancreatic protease activation (carboxypeptidase B activation peptide), cytokine response (interleukin [IL]-1 receptor antagonist, IL-6, and soluble tumor necrosis factor receptor-I) and neutrophil activation (neutrophil gelatinase-associated lipocalin and polymorphonuclear elastase) differ between patients with and without EIP. A second aim was to clarify the temporal relation between these different events.

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