• Abstracts from The Cold Weather Operations Conference 2021 

      Norheim, Arne Johan; Rannestad, Bård Stian; Howes, Richard; Rein, Erling Bekkestad; Jørum, Ellen; Friedl, Karl; Havenith, George; Teien, Hilde Kristin; Mercer, James; Melau, Jørgen; de Weerd, Louis; Smith, Michael; Taylor, Natalie; Voie, Øyvind Albert; Bergan-Skar, Pål; Andrews, Steve; Næsheim, Torvind; Steinberg, Tuva (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-11)
      A common effort for both military and civil healthcare is to achieve knowledge-based health care in cold weather injuries and fatal accidents in harsh arctic environment. The Cold Weather Operations Conference in November 2021, having more than 300 participants from 20 countries, was addressing the prevention and treatment of injuries and trauma care in cold weather conditions and the challenges for ...
    • Botulinum Toxin A in the treatment of frostbite sequelae–results from a blinded, early-phase, comparative trial 

      Norheim, Arne Johan; Borud, Einar Kristian; Mercer, James; de Weerd, Louis; Weiss, Thomas; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-15)
      Introduction: Freezing Cold Injuries (FCI) have been associated with long-term sequelae including vasospasm. The aims of the pilot study are to explore the research methodology and investigate the tolerability and safety of treatment with Botulinum Toxin-A (BTX-A) in FCI Sequelae. Methodology: This pilot study tests the logistics, the treatment setting and the follow-up procedure in an early-phase, ...
    • Combining autologous ventral hernia repair using component separation with DIEP breast reconstruction 

      de Weerd, Louis; Nergård, Solveig; Lindsetmo, Rolv-Ole; Weum, Sven (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-02)
      Concern about flap viability and abdominal wall integrity would normally exclude a patient with a large ventral midline hernia from having a breast reconstruction with a deep inferior epigastric perforator (DIEP) flap. Ventral hernia repair using the abdominoplasty approach has been reported before. The abdominoplasty flap would normally be discarded. This article presents a unique case of a ...
    • Deformable liposomes for skin therapy with human epidermal growth factor: The effect of liposomal surface charge 

      Ternullo, Selenia; Basnet, Purusotam; Holsæter, Ann Mari; Flaten, Gøril Eide; de Weerd, Louis; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-07)
      The topical administration of exogenous human epidermal growth factor (hEGF) is a promising approach for improved chronic wound therapy. To develop therapeutically superior hEGF formulation, we prepared hEGF-containing neutral (NDLs), cationic (CDLs) and anionic (ADLs) deformable liposomes (DLs), respectively, since it is expected that the liposomal surface charge can affect both the liposomal ...
    • Detection of Perforators Using Smartphone Thermal Imaging 

      Weum, Sven; Lott, Alexander; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11)
      Letter to the Editor
    • The distribution of hand fractures at the university hospital of north Norway 

      Weum, Sven; Millerjord, Siri; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-06)
      BACKGROUND: The objective of this study was to describe the fracture pattern for hand fractures in the Arctic region of Norway. MATERIALS AND METHODS: Using the hospital's radiological information system and picture archiving and communication system all traumatic hand fractures in the year of 2010 were registered. Fractures in the carpal, metacarpal, and phalangeal bones were included in the ...
    • Evaluation of dynamic infrared thermography as an alternative to CT angiography for perforator mapping in breast reconstruction: A clinical study 

      Weum, Sven; Mercer, James; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-15)
      Background: The current gold standard for preoperative perforator mapping in breast reconstruction with a DIEP flap is CT angiography (CTA). Dynamic infrared thermography (DIRT) is an imaging method that does not require ionizing radiation or contrast injection. We evaluated if DIRT could be an alternative to CTA in perforator mapping. Methods: Twenty-five patients scheduled for secondary breast ...
    • Going skin deep: a direct comparison of penetration potential of lipid-based nanovesicles on the isolated perfused human skin flap model 

      Ternullo, Selenia; de Weerd, Louis; Holsæter, Ann Mari; Flaten, Gøril Eide; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel, 2017-09-12)
      Phospholipid-based nanocarriers are attractive drug carriers for improved local skin therapy. In the present study, the recently developed isolated perfused human skin flap (IPHSF) model was used to directly compare the skin penetration enhancing potential of the three commonly used nanocarriers, namely conventional liposomes (CLs), deformable liposomes (DLs) and solid lipid nanoparticles (SLNs). ...
    • Health effects of voluntary exposure to cold water–a continuing subject of debate 

      Espeland, Didrik; de Weerd, Louis; Mercer, James (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-22)
      This review is based on a multiple database survey on published literature to determine the effects on health following voluntary exposure to cold-water immersion (CWI) in humans. After a filtering process 104 studies were regarded relevant. Many studies demonstrated significant effects of CWI on various physiological and biochemical parameters. Although some studies were based on established winter ...
    • Impact on Abdominal Skin Perfusion following Abdominoplasty 

      Nergård, Solveig; Mercer, James; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-26)
      Background: Wound healing problems following abdominoplasty may be a result of impaired tissue perfusion. This study evaluated the impact a standard abdominoplasty may have on abdominal skin perfusion.<p> <p>Methods: A standard abdominoplasty was performed in 16 patients. Dynamic infrared thermography (DIRT) using a mild and a stronger cold challenge was performed pre-, intra-, and postoperatively ...
    • In vivo perforasome perfusion in hemi-DIEP flaps evaluated with indocyanine-green fluorescence angiography and infrared thermography 

      Chaudhry, Muiz Akram; Mercer, James; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05)
      Background: There are no in vivo studies that evaluate the effect of perforator dissection on the perfusion territory of a perforator (perforasome). In this study, indocyanine green fluorescence angiography (ICG-FA) and infrared thermography (IRT) were used intraoperatively to evaluate perforasome perfusion in hemi-DIEP flaps.<p> <p>Methods: Patients selected for DIEP breast reconstruction were ...
    • Intrathoracic Breast Transposition: A New Method in the Treatment of Bronchopleural Fistula and Empyema 

      de Weerd, Louis; Endresen, Petter Cappelen; Numan, Anmar; Weum, Sven (Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
      A bronchopleural fistula (BF) is a life-threatening complication. Optimal management of a BF is still debated although surgery remains the preferred treatment. Usually, the fistula is a result of inadequate healing at the bronchial stump after pneumonectomy. Successful closure of a BF after pneumonectomy depends on evacuation of empyema, coverage of the suture line after fistula closure with ...
    • The isolated perfused human skin flap model: A missing link in skin penetration studies? 

      Ternullo, Selenia; de Weerd, Louis; Flaten, Gøril Eide; Holsæter, Ann Mari; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-05)
      Development of effective (trans)dermal drug delivery systems requires reliable skinmodels to evaluate skin drug penetration. The isolated perfused human skin flap remainsmetabolically active tissue for up to 6 h during in vitro perfusion. We introduce the isolated perfused human skin flap as a close-to-in vivo skin penetration model. To validate the model's ability to evaluate skin drug penetration ...
    • Living with dead spaces: Closing complex posterior midline defects with midline-based perforator flaps 

      de Weerd, Louis; Solberg, Tore; Falch, Birgit Margrethe; Weum, Sven (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-01)
    • The marriage of sartorius and tensor fasciae latae in treating vascular prosthetic graft infections 

      Zoepke, Simone N.; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-20)
      Background: <br> Vascular prosthetic graft infection in the groin is associated with high morbidity and mortality. This article presents a case series on the use of 2 flaps in the treatment of this condition. <br>Methods:<br> Five patients, mean age 65 years (range, 49–74 years), with significant comorbidity were treated for an exposed and infected vascular prosthetic graft in the groin with a ...
    • A new treatment for frostbite sequelae; Botulinum toxin 

      Norheim, Arne Johan; Mercer, James; Musial, Frauke; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-19)
      Frostbite sequelae are a relevant occupational injury outcome for soldiers in arctic environments. A Caucasian male soldier suffered frostbite to both hands during a military winter exercise. He developed sensory-motor disturbances and cold hypersensitivity. Angiography and thermography revealed impaired blood flow while Quantitative Sensory Testing indicated impaired somato-sensory nerve function. ...
    • Perforator-guided drug injection at the point of nerve entrapment 

      Weum, Sven; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-14)
      Letter to the Editor
    • Perforator-guided drug injection in the treatment of abdominal wall pain 

      Weum, Sven; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-25)
      Background. Pain from the abdominal wall can be caused by nerve entrapment, a condition called abdominal cutaneous nerve entrapment syndrome (ACNES). As an alternative to surgery, ACNES may be treated with injection of local anesthetics, corticosteroids, or botulinum toxin at the point of maximal pain. Method. The point of maximal pain was marked on the abdominal skin. Using color Doppler ultrasound, ...
    • Perfusion dynamics in abdominal skin after free abdominal flap breast reconstruction using internal mammary vessels as recipient vessels. A clinical study using Dynamic Infrared Thermography 

      Nergård, Solveig; Mercer, James; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-28)
      Background: Wound healing problems at the donor site in free abdominal flap breast reconstruction cause significant morbidity to patients. No studies have investigated what impact the use of the internal mammary artery in free abdominal flap breast reconstruction has on abdominal skin perfusion. We hypothesized that harvesting the internal mammary vessels (IMV) has a negative effect on abdominal ...
    • Triple use of autologous amnion graft in the treatment of meningomyelocele and split cord malformation 

      de Weerd, Louis; Sjåvik, Kristin; Pedersen, Lars Kjelsberg; Weum, Sven; Hennig, Rune (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-20)
      This article describes the triple use of autologous amnion graft as a new procedure in the treatment of myelomeningocele and in myelomeningocele with split cord malformation. The first amnion graft was used as a physical and mechanical barrier to protect the myelomeningocele (MMC) from desiccation and mechanical stress directly after birth. A second graft was used as a dura substitute to close the ...