Now showing items 1731-1750 of 1796

    • Vaccine associated benign headache and cutaneous hemorrhage after ChAdOx1 nCoV-19 vaccine: A cohort study 

      Schultz, Nina Haagenrud; Søraas, Arne Vasli; Sørvoll, Ingvild Hausberg; Akkøk, Cigdem Ahaein; Vetlesen, Annette; Bhamra, Jagjit Singh; Ahlen, Maria Therese; Holme, Pål Andre; Aamodt, Anne Hege; Skagen, Karolina Ryeng; Skattør, Thor Håkon; Skjelland, Mona; Wiedmann, Markus (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-17)
      Objectives Fatal complications have occurred after vaccination with ChAdOx1 nCoV-19, a vaccine against Covid-19. Vaccine-induced immune thrombotic thrombocytopenia (VITT) with severe outcome is characterized by venous thrombosis, predominantly in cerebral veins, thrombocytopenia and anti-PF4/polyanion antibodies. Prolonged headaches and cutaneous hemorrhages, frequently observed after the ChAdOx1 ...
    • Validating Biobehavioral Technologies for Use in Clinical Psychiatry 

      Cohen, Alex S.; Cox, Christopher R.; Tucker, Raymond P.; Mitchell, Kyle R.; Schwartz, Elana K.; Le, Thanh P.; Foltz, Peter W.; Holmlund, Terje Bektesevic; Elvevåg, Brita (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-11)
      The last decade has witnessed the development of sophisticated biobehavioral and genetic, ambulatory, and other measures that promise unprecedented insight into psychiatric disorders. As yet, clinical sciences have struggled with implementing these objective measures and they have yet to move beyond “proof of concept.” In part, this struggle reflects a traditional, and conceptually flawed, application ...
    • Validation of a graded prognostic model in patients with brain metastases treated with whole-brain radiotherapy instead of radiosurgery 

      Nieder, Carsten; Mannsåker, Bård; Yobuta, Rosalba (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05)
      Background/Aim: The aim of this study was to analyze the survival predictions obtained from a recent graded prognostic model developed and validated in Japan.<p><p> Patients and Methods: This was a retrospective single-institution analysis of 249 patients, managed with whole-brain radiotherapy for brain metastases. The sum of scores was calculated as in the Japanese study. The following parameters ...
    • Validation of a prediction model for post-chemotherapy fibrosis in nonseminoma patients 

      Gerdtsson, Axel; Torisson, Gustav; Thor, Anna; Grenabo Bergdahl, Anna; Almås, Bjarte; Håkansson, Ulf; Törnblom, Magnus; Negaard, Helene Francisca Stigter; Glimelius, Ingrid; Halvorsen, Dag; Karlsdottir, Åsa; Haugnes, Hege Sagstuen; Larsen, Signe Melsen; Holmberg, Göran; Wahlqvist, Rolf; Tandstad, Torgrim; Cohn-Cedermark, Gabriella; Ståhl, Olof; Kjellman, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-02)
      Objective - To validate Vergouwe's prediction model using the Swedish and Norwegian Testicular Cancer Group (SWENOTECA) RETROP database and to define its clinical utility.<p> <p>Materials and methods - Vergouwe's prediction model for benign histopathology in post-chemotherapy retroperitoneal lymph node dissection (PC-RPLND) uses the following variables: presence of teratoma in orchiectomy specimen; ...
    • Validation of diagnostic utility of fasting plasma glucose and HbA1c in stable renal transplant recipients one year after transplantation 

      Ussif, Mohammed Al-Amin; Åsberg, Anders; Strøm Halden, Thea Anine; Nordheim, Espen; Hartmann, Anders; Jenssen, Trond Geir (Journal article; Peer reviewed, 2019-01-10)
      <b>Background</b><br> The use of HbA1c ≥6.5% for diagnosis of diabetes has been challenged for post-transplantation diabetes mellitus (PTDM) also known as new onset diabetes after transplantation (NODAT) due to a low sensitivity early after renal transplantation. PTDM diagnosed with an oral glucose tolerance test (OGTT) is highly predictable for long-term patient mortality. HbA1c was introduced for ...
    • Validation of eGFR for Detecting Associations Between Serum Protein Biomarkers and Subsequent GFR Decline 

      Enoksen, Inger Therese Tønsberg; Rinde, Nikoline Balteskard; Svistounov, Dmitri; Norvik, Jon Viljar Porserud; Solbu, Marit Dahl; Eriksen, Bjørn Odvar; Melsom, Toralf (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08)
      Significance Statement - eGFR from creatinine, cystatin C, or both has been primarily used in search of biomarkers for GFR decline. Whether the relationships between biomarkers and eGFR decline are similar to associations with measured GFR (mGFR) decline has not been investigated. This study revealed that some biomarkers showed statistically significant different associations with eGFR decline ...
    • Validation of forearm fracture diagnoses in administrative patient registers 

      Omsland, Tone Kristin; Solberg, Lene Bergendal; Bjørnerem, Åshild Marit; Borgen, Tove Tveitan; Andreasen, Camilla; Wisløff, Torbjørn; Hagen, Gunhild; Basso, Trude; Gjertsen, Jan-Erik; Apalset, Ellen Margrete; Figved, Wender; Stutzer, Jens-Meinhard; Nissen, Frida Igland; Hansen, Ann Kristin; Joakimsen, Ragnar Martin; Figari, Elisa; Peel, Geoffrey; Rashid, Ali A.; Khoshkhabari, Jashar; Eriksen, Erik Fink; Nordsletten, Lars; Frihagen, Frede; Dahl, Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-24)
      Summary The validity of forearm fracture diagnoses recorded in fve Norwegian hospitals was investigated using image reports and medical records as gold standard. A relatively high completeness and correctness of the diagnoses was found. Algorithms used to defne forearm fractures in administrative data should depend on study purpose.<p> <p>Purpose In Norway, forearm fractures are routinely recorded ...
    • Validation of forearm fracture diagnoses in administrative patient registers 

      Omsland, Tone Kristin; Solberg, Lene Bergendal; Bjørnerem, Åshild Marit; Borgen, Tove Tveitan; Andreasen, Camilla; Wisløff, Torbjørn; Hagen, Gunhild; Basso, Trude; Gjertsen, Jan-Erik; Apalset, Ellen Margrete; Figved, Wender; Stutzer, Jens-Meinhard; Nissen, Frida Igland; Hansen, Ann Kristin; Joakimsen, Ragnar Martin; Figari, Elisa; Peel, Geoffrey; Rashid, Ali A.; Khoshkhabari, Jashar; Eriksen, Erik Fink; Nordsletten, Lars; Frihagen, Frede; Dahl, Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-24)
      Summary The validity of forearm fracture diagnoses recorded in fve Norwegian hospitals was investigated using image reports and medical records as gold standard. A relatively high completeness and correctness of the diagnoses was found. Algorithms used to define forearm fractures in administrative data should depend on study purpose.<p> <p>Purpose In Norway, forearm fractures are routinely recorded ...
    • Validation of the graded prognostic assessment for gastrointestinal cancers with brain metastases (GI-GPA) 

      Nieder, Carsten; Hintz, Mandy; Popp, Ilinca; Bilger, Angelika; Grosu, Anca L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-13)
      <i>Purpose</i> - The purpose of this study was to validate a new prognostic model (GI-GPA) originally derived from a multi-center database (USA, Canada, Japan).<p><p> <i>Patients and Methods</i> - This retrospective study included 92 German and Norwegian patients treated with individualized approaches, always including brain radiotherapy. Information about age, extracranial spread, number of brain ...
    • Validation of the graded prognostic assessment for lung cancer with brain metastases using molecular markers(lung-molGPA) 

      Nieder, Carsten; Hintz, Mandy; Oehlke, Oliver; Bilger, Angelika; Grosu, Anca L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-26)
      Background:<br>Many patients with brain metastases from non-small cell lung cancer have limited survival, while others survive for several years, depending on patterns of spread, EGFR and ALK alterations, among others. The purpose of this study was to validate a new prognostic model (Lung-molGPA) originally derived from a North American database.<br>Patients and methods:<br>This retrospective study ...
    • Validation of the multiple sclerosis diagnosis in the Norwegian Patient Registry 

      Benjaminsen, Espen; Myhr, Kjell-Morten; Grytten, Nina; Alstadhaug, Karl Bjørnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-04)
      <i>Background</i> - Health registries may yield important data for epidemiological studies. However, in order to be a valuable source for information, the registered data have to be correct.<p><p> <i>Objectives</i> - The aim of the study was to validate data from the Norwegian Patient Registry (NPR) regarding multiple sclerosis (MS).<p><p> <i>Materials and Methods</i> - We obtained data ...
    • The value of dynamic infrared thermography in pedicled thoracodorsal artery perforator flap surgery 

      Sjöberg, Thomas K.; Mercer, James; Weum, Sven; de Weerd, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-15)
      <p><i>Background:</i> Dynamic infrared thermography (DIRT) is a noninvasive imaging technique that can provide indirect and real-time information on skin perfusion by measuring skin temperature. Although used in flap surgery, there are no reports on its value in procedures using a pedicled thoracodorsal artery perforator (TDAP) flap. The aim of this study was to assess the usefulness of DIRT in ...
    • Variation in antibiotic consumption in very preterm infants-a 10 year population-based study 

      Huncikova, Zuzana; Stensvold, Hans Jørgen; Øymar, Knut Asbjørn Alexander; Vatne, Anlaug; Lang, Astri Maria; Støen, Ragnhild; Brigtsen, Anne Karin; Moster, Dag; Eriksen, Beate Horsberg; Selberg, Terje Reidar; Rønnestad, Arild Erland; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-21)
      Objectives: Wide variations in antibiotic use in very preterm infants have been reported across centres despite similar rates of infection. We describe 10 year trends in use of antibiotics and regional variations among very preterm infants in Norway. Patients and Methods: All live-born very preterm infants (<32 weeks gestation) admitted to any neonatal unit in Norway during 2009–18 were included. ...
    • Variation in general supportive and preventive intensive care management of traumatic brain injury: a survey in 66 neurotrauma centers participating in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study 

      Huijben, Jilske A.; Volovici, Victor; Cnossen, Maryse C.; Haitsma, Iain K.; Stocchetti, Nino; Maas, Andrew I. R.; Menon, David K.; Ercole, Ari; Citerio, Giuseppe; Nelson, David; Polinder, Suzanne; Steyerberg, Ewout W.; Lingsma, Hester F.; van der Jagt, Mathieu; Vik, Anne; Andelic, Nada; Andreassen, Lasse; Anke, Audny; Frisvold, Shirin; Helseth, Eirik; Roise, Olav; Skandsen, Toril; Håberg, Asta; Røe, Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-13)
      <p><i>Background</i>: General supportive and preventive measures in the intensive care management of traumatic brain injury (TBI) aim to prevent or limit secondary brain injury and optimize recovery. The aim of this survey was to assess and quantify variation in perceptions on intensive care unit (ICU) management of patients with TBI in European neurotrauma centers.</p> <p><i>Methods</i>: We ...
    • Variation in neurosurgical management of traumatic brain injury: a survey in 68 centers participating in the CENTER-TBI study 

      Van Essen, Thomas; den Boogert, HF; Cnossen, MC; De Ruiter, Godard CW; Haitsma, Ian; Polinder, S; Steyerberg, Ewout W.; Menon, David; Maas, Andrew I. R.; Lingsma, Hester F; Peul, Wilco; Andelic, Nada; Helseth, Eirik; Roise, O; Røe, Cecilie; Vik, Anne; Skandsen, Toril; Anke, Audny; Frisvold, Shirin Kordasti (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-19)
      <p><i>Background</i>: Neurosurgical management of traumatic brain injury (TBI) is challenging, with only low-quality evidence. We aimed to explore differences in neurosurgical strategies for TBI across Europe.</p> <p><i>Methods</i>: A survey was sent to 68 centers participating in the Collaborative European Neurotrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study. The ...
    • Variation in the practice of tracheal intubation in Europe after traumatic brain injury: a prospective cohort study 

      Gravesteijn, BY; Sewalt, C.; Ercole, Ari; Lecky, Fiona; Menon, David; Steyerberg, Ewout W; Maas, AIR; Lingsma, Hester F; Klimek, Magdalena; Vik, Anne; Andelic, Nada; Andreassen, Lasse; Anke, Audny; Frisvold, Shirin; Helseth, Eirik; Røise, Olav; Røe, Cecilie; Schirmer-Mikalsen, Kari; Sandrød, Oddrun; Borgen Lund, Stine (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-13)
      Traumatic brain injury patients frequently undergo tracheal intubation. We aimed to assess current intubation practice in Europe and identify variation in practice. We analysed data from patients with traumatic brain injury included in the prospective cohort study collaborative European neurotrauma effectiveness research in traumatic brain injury (CENTER‐TBI) in 45 centres in 16 European countries. ...
    • Variation in use of open and laparoscopic distal pancreatectomy and associated outcome metrics in a universal health care system 

      Søreide, Kjetil; Nymo, Linn Såve; Kleive, Dyre; Olsen, Frank; Lassen, Kristoffer (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-01)
      <i>Background</i> - Universal health care (UHC) should ensure equal access to and use of surgery, but few studies have explored variation in UHC systems. The objective was to describe practice of distal pancreatectomy in Norway covered exclusively by an UHC.<p><p> <i>Methods</i> - Data on all patients undergoing distal pancreatectomy from the Norwegian Patient Register over a 5-year period. ...
    • Variations in contact patterns and dispatch guideline adherence between Norwegian emergency medical communication centres - a cross-sectional study 

      Ellensen, Eirin Nybø; Hunskaar, Steinar; Wisborg, Torben; Zakariassen, Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Vasopressin impairs brain, heart and kidney perfusion: an experimental study in pigs after transient myocardial ischemia 

      Müller, Stig; How, Ole-Jakob; Hermansen, Stig Eggen; Stenberg, Thor Allan; Sager, Georg; Myrmel, Truls (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-02-21)
      Introduction: Arginine vasopressin (AVP) is increasingly used to restore mean arterial pressure (MAP) in low-pressure shock states unresponsive to conventional inotropes. This is potentially deleterious since AVP is also known to reduce cardiac output by increasing vascular resistance. The effects of AVP on blood flow to vital organs and cardiac performance in a circulation altered by cardiac ...
    • Vedvarende bruk av opioider og samtidig bruk av andre vanedannende legemidler 

      Odsbu, Ingvild; Handal, Marte; Hjellvik, Vidar; Borchgrevink, Petter Chr.; Clausen, Thomas; Nesvåg, Ragnar; Skurtveit, Svetlana Ondrasova (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-14)
      BAKGRUNN<p> Vedvarende bruk av opioider kan ha uheldige konsekvenser. Vi har undersøkt vedvarende opioidbruk i pasientgruppersom fikk forskrevet opioider på ulike indikasjoner(langvarig smerte, palliativ behandling, andre (hvitresept)),samt gruppenessamtidige bruk av enkelte andre vanedannende legemidler.<p> MATERIALE OG METODE<p> <p>Personer med minst én utlevering av et opioid i Reseptregisteret ...