Browsing Bergen Open Research Archive by Author "Wensaas, Knut-Arne"
Now showing items 1-18 of 18
-
Antibiotics for gastroenteritis in general practice and out-of-hour services in Norway 2006–15
Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre; Larsen, Leo; Mørch, Kristine; Ruths, Sabine; Rørtveit, Guri (Journal article; Peer reviewed, 2022)Background: When patients with gastroenteritis (GE) seek health care, they are generally managed in primary care. Little is known about the use of antibiotic treatment in these cases. Objective: The aim of this study ... -
Characteristics of hospitalized patients during a large waterborne outbreak of Campylobacter jejuni in Norway
Mortensen, Nicolay; Hanevik, Kurt; Langeland, Nina; Rørtveit, Guri; Wensaas, Knut-Arne; Jonasson, Solveig Aalstad; Lavesson, Ingrid Viola; Emberland, Knut Erik; Litleskare, Sverre (Journal article; Peer reviewed, 2021)Very few reports describe all hospitalized patients with campylobacteriosis in the setting of a single waterborne outbreak. This study describes the demographics, comorbidities, clinical features, microbiology, treatment ... -
Chronic fatigue syndrome 5 years after giardiasis: differential diagnoses, characteristics and natural course
Mørch, Kristine; Hanevik, Kurt; Rivenes, Ann Christin; Bødtker, Jørn; Næss, Halvor; Stubhaug, Bjarte; Wensaas, Knut-Arne; Rørtveit, Guri; Eide, Geir Egil; Hausken, Trygve; Langeland, Nina (Peer reviewed; Journal article, 2013-02-12)Background: A high prevalence of chronic fatigue has previously been reported following giardiasis after a large waterborne outbreak in Bergen, Norway in 2004. The aim of this study was to describe and evaluate differential ... -
Clinical features of gastroenteritis during a large waterborne Campylobacter outbreak in Askøy, Norway
Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre; Iversen, Arild; Hanevik, Kurt; Langeland, Nina; Rørtveit, Guri (Journal article; Peer reviewed, 2022)Purpose: Outbreaks of Campylobacter infection are common, but studies exploring the clinical features of acute illness in the outbreak setting are scarce in existing literature. The main purpose of the present study was ... -
Colorectal cancer screening with repeated fecal immunochemical test versus sigmoidoscopy: baseline results from a randomized trial
Randel, Kristin Ranheim; Schult, Anna Lisa; Botteri, Edoardo; Hoff, Geir; Bretthauer, Michael; Ursin, Giske; Natvig, Erik; Berstad, Paula; Jørgensen, Anita; Sandvei, Per Kristian; Olsen, Marie Kristin Ek; Frigstad, Svein Oskar; Darre-Næss, Ole; Norvard, Espen R.; Bolstad, Nils; Kørner, Hartwig; Wibe, Arne; Wensaas, Knut-Arne; de Lange, Thomas; Holme, Øyvind (Journal article; Peer reviewed, 2021)Background and aims: The comparative effectiveness of sigmoidoscopy and fecal immunochemical testing (FIT) for colorectal cancer (CRC) screening is unknown. Methods: Individuals aged 50-74 years living in South-East Norway ... -
Consultations and antibiotic treatment for urinary tract infections in Norwegian primary care 2006–2015, a registry-based study
Haugom, Lars; Ruths, Sabine; Emberland, Knut Erik; Eliassen, Knut Eirik Ringheim; Rørtveit, Guri; Wensaas, Knut-Arne (Journal article; Peer reviewed, 2021)Background Extensive use of antibiotics and the resulting emergence of antimicrobial resistance is a major health concern globally. In Norway, 82% of antibiotics is prescribed in primary care and one in four prescriptions ... -
Consultations for gastroenteritis in general practice and out-of-hours services in Norway 2006–15
Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre; Rørtveit, Guri (Peer reviewed; Journal article, 2019)Background: Most of the patients with gastroenteritis seeking health care services are managed in primary care; yet, little is known about these consultations. Syndromic-based surveillance of gastrointestinal infections ... -
Giardiasis in Bergen. Outbreak and clinical consequences.
Wensaas, Knut-Arne (Doctoral thesis, 2011-11-25)Background Giardia lamblia is a common cause of waterborne disease. It is endemic in many parts of the world, especially where sanitation is poor, but in Europe and North America it is most often encountered in outbreaks ... -
Irritable Bowel Syndrome and Chronic Fatigue 6 Years After Giardia Infection: A Controlled Prospective Cohort Study
Hanevik, Kurt; Wensaas, Knut-Arne; Rørtveit, Guri; Eide, Geir Egil; Mørch, Kristine; Langeland, Nina (Peer reviewed; Journal article, 2014-08-12)Background. Functional gastrointestinal disorders and fatigue may follow acute infections. This study aimed to estimate the persistence, prevalence, and risk of irritable bowel syndrome and chronic fatigue 6 years after ... -
Perceived food intolerance and irritable bowel syndrome in a population 3 years after a giardiasis-outbreak: a historical cohort study
Litleskare, Sverre; Wensaas, Knut-Arne; Eide, Geir Egil; Hanevik, Kurt; Kahrs, Gudrun E; Langeland, Nina; Rørtveit, Guri (Peer reviewed; Journal article, 2015-11-19)Background: Studies have shown an increased prevalence of irritable bowel syndrome (IBS) after acute gastroenteritis. Food as a precipitating and perpetuating factor in IBS has gained recent interest, but food intolerance ... -
Postinfectious and sporadic functional gastrointestinal disorders have different prevalences and rates of overlap: results from a controlled cohort study 3 years after acute giardiasis
Wensaas, Knut-Arne; Hanevik, Kurt; Hausken, Trygve; Eide, Geir Egil; Langeland, Nina; Mørch, Kristine; Rørtveit, Guri (Peer reviewed; Journal article, 2016)Background: Irritable bowel syndrome (IBS) is a common complication following gastroenteritis, and a high prevalence of postgiardiasis IBS has previously been reported. This study aims to investigate the prevalence, adjusted ... -
Prevalence of fibromyalgia 10 years after infection with Giardia lamblia: a controlled prospective cohort study
Hunskår, Gunnhild Sellevoll; Rørtveit, Guri; Litleskare, Sverre; Eide, Geir Egil; Hanevik, Kurt; Langeland, Nina; Wensaas, Knut-Arne (Journal article; Peer reviewed, 2022)Objectives: To investigate whether acute infection with Giardia lamblia is associated with fibromyalgia 10 years after infection and whether fibromyalgia is associated with irritable bowel syndrome (IBS) and chronic fatigue ... -
Quality of life and its association with irritable bowel syndrome and fatigue ten years after giardiasis
Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil; Emberland, Knut Erik; Hanevik, Kurt; Langeland, Nina; Wensaas, Knut-Arne (Peer reviewed; Journal article, 2019)Background: Gastroenteritis has been associated with complications such as irritable bowel syndrome (IBS) and chronic fatigue (CF). Little is known about the implications for quality of life (QoL) in this setting. The aims ... -
The relationship between irritable bowel syndrome, functional dyspepsia, chronic fatigue and overactive bladder syndrome: A controlled study 6 years after acute gastrointestinal infection
Persson, Robert; Wensaas, Knut-Arne; Hanevik, Kurt; Eide, Geir Egil; Langeland, Nina; Rørtveit, Guri (Peer reviewed; Journal article, 2015-06-10)BACKGROUND: To investigate in a cohort with previous gastrointestinal infection and a control group the prevalence of overactive bladder syndrome (OAB), and how it was associated with three other functional disorders; ... -
Respiratory tract infections in Norwegian primary care 2006–2015: a registry-based study
Larsen, Leo; Wensaas, Knut-Arne; Emberland, Knut Erik; Rørtveit, Guri (Journal article; Peer reviewed, 2022)Objective Examine characteristics and time trends of respiratory tract infection (RTI) consultations in Norwegian primary care and compare consultations in daytime general practice and out-of-hours (OOH) services. Design ... -
Restless legs syndrome - a study from general practice
Bjorvatn, Bjørn; Wensaas, Knut-Arne; Emberland, Knut Erik; Fadnes, Lars Thore; Litleskare, Sverre; Perez, Esperanza Diaz; Ruths, Sabine; Rørtveit, Guri; Waage, Siri (Journal article; Peer reviewed, 2021)BAKGRUNN Forekomsten av rastløse bein er rundt 5–10 % blant voksne i den generelle befolkningen. Få studier er gjort om forekomsten blant pasienter som oppsøker fastlege. Det er også få studier om sammenheng med andre ... -
Risk of miscarriage in women with psychiatric disorders
Magnus, Maria Christine; Havdahl, Alexandra; Morken, Nils-Halvdan; Wensaas, Knut-Arne; Wilcox, Allen J.; Håberg, Siri Eldevik (Journal article; Peer reviewed, 2021)Background Some psychiatric disorders have been associated with increased risk of miscarriage. However, there is a lack of studies considering a broader spectrum of psychiatric disorders to clarify the role of common as ... -
Severity of Giardia infection associated with post-infectious fatigue and abdominal symptoms two years after
Mørch, Kristine; Hanevik, Kurt; Rørtveit, Guri; Wensaas, Knut-Arne; Eide, Geir Egil; Hausken, Trygve; Langeland, Nina (Peer reviewed; Journal article, 2009-12-15)Background: A high rate of post-infectious fatigue and abdominal symptoms two years after a waterborne outbreak of giardiasis in Bergen, Norway in 2004 has previously been reported. The aim of this report was to identify ...