Jens Kjeldsen

Physician, Ph.D.

  • Campusvej 55

    5230 Odense M

    Denmark

20002020
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Research Output 2000 2020

Gastrointestinal bleeding in patients with hereditary hemorrhagic telangiectasia

Kjeldsen, A. D. & Kjeldsen, J., 2000, In : American Journal of Gastroenterology. 95, 2, p. 415-8 4 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Population
2001

[Cyclosporine treatment of patients with active ulcerative colitis refractory to high-dose glucocorticoid].

Kjeldsen, J., Wilson, B. V. & Knudsen, T., 2001, In : Ugeskrift for Laeger.

Research output: Contribution to journalJournal articleResearchpeer-review

Ciclosporinbehandling af patienter med aktiv colitis ulcerosa refraktære over for højdosis glukokortikoid

Kjeldsen, J., Wilson, B. V. & Knudsen, T., 2001, In : Ugeskrift for læger. 163, 1, p. 22-25 4 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Collagen Metabolites in the Peripheral and Splanchnic Circulation of Patients with Crohn Disease

Kjeldsen, J., Rasmussen, M., Schaffalitzky de Muckadell, O. B., Kronborg, O. & Junker, P., 2001, In : Scandinavian Journal of Gastroenterology. 36, p. 1193-97

Research output: Contribution to journalJournal articleResearchpeer-review

Nye behandlinger af kronisk inflammatorisk tarmsygdom: anti TNF-antistoffer og probiotika

Kjeldsen, J., Brynskov, J. & Madsen, J. R., 2001, In : Ugeskrift for læger. 163, p. 1707

Research output: Contribution to journalJournal articleResearch

2002

Effects of topical ropivacaine on eicosanoides and neurotransmitters in the rectum of patients with distal ulcerative colitis

Hillingsøe, J., Kjeldsen, J., Schmidt, P. T., Rasmussen, T. N., Fischer-Hansen, B. & Holst, J. J., 2002, In : Scandinavian Journal of Gastroenterology. 37, p. 325-9

Research output: Contribution to journalJournal articleResearchpeer-review

Kronisk inflammatoriske tarmlidelser

Kjeldsen, J. & Lauritsen, K., 2002, In : Maanedsskrift for Praktisk Laegegerning. årgang 80, p. 1043-1057

Research output: Contribution to journalJournal articleResearch

2003

Incomplete remission with short-term prednisolone treatment in collagenous colitis: A randomized study

Munck, L. K., Kjeldsen, J., Philipsen, E. & Fischer Hansen, B., 2003, In : Scandinavian Journal of Gastroenterology. 38(6), p. 606-10

Research output: Contribution to journalJournal articleResearch

Pharmacological monitoring of azathioprine therapy

Reuther, L. O., Sonne, J., Larsen, N. E., Larsen, B., Christensen, S., Rasmussen, S. N., Tofteng, F., Haaber, A., Johansen, N., Kjeldsen, J. & Schmiegelow, K., 2003, In : Scandinavian Journal of Gastroenterology. 38(9), p. 972-7

Research output: Contribution to journalJournal articleResearch

2004

Prediction of therapy in primary endoscopic retrograde cholangiopancreatography.

Nathan, T., Kjeldsen, J. & Muckadell, O. B. S. D., 2004, In : Endoskopie. 36(6), p. 527-534

Research output: Contribution to journalJournal articleResearch

2006

Månedens billede: Burried Bumper Syndrom

Dall, M. & Kjeldsen, J., 2006, In : Ugeskrift for læger. 168, p. 1662

Research output: Contribution to journalLetterResearch

Probiotika: skal vi ændre behandlingsstrategi for pouchitis?

Klinge, L. & Kjeldsen, J., 2006, In : Ugeskrift for læger. 168, p. 3516-3518

Research output: Contribution to journalReviewResearch

2007

Den diagnostiske værdi af nedre endoskopi for patienter henvist med nedre gastrointestinale symptomer

Gildberg-Mortensen, R., Nordenkjær, K., Kjeldsen, J. & Hansen, J. M., 2007.

Research output: Contribution to conference without publisher/journalPosterResearch

2008

The yield of sigmoideoscopy and colonoscopy in patients refered with lower abdominal symptoms

Gildberg, R., Hansen, J. M. & Kjeldsen, J., 2008, In : Today in Medicine. Gastroenterology. 134, 1, p. 319 1 p.

Research output: Contribution to journalConference abstract in journalResearch

The yield of sigmoideoscopy and colonoscopy in patients referred with lower abdominal symptoms

Kjeldsen, J., Hansen, J. M. & Gildberg-Mortensen, R., 2008, In : Gastroenterology. 4, p. 319 1 p.

Research output: Contribution to journalConference abstract in journalResearch

Ulcerative colitis following B lymphocyte depletion with rituximab in a patient with Graves' disease.

El Fassi, D., Nielsen, C. H., Kjeldsen, J., Clemmensen, O. & Hegedüs, L., 1. May 2008, In : Gut. 57, 5, p. 714-5 1 p.

Research output: Contribution to journalJournal articleResearchpeer-review

2009

Billeddiagnostiske og endoskopiske metoder ved Crohns sygdom i tyndtarmen

Translated title of the contribution: Diagnostic imaging and endoscopic methods in Crohn's disease of the small intestineJensen, M. D., Kjeldsen, J., Nathan, T. & Rafaelsen, S. R., 17. Aug 2009, In : Ugeskrift for læger. 171, 34, p. 2383-8 5 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Endoskopi af patienter i antitrombotisk og antikoagulerende behandling

Translated title of the contribution: Endoscopy in patients receiving anticoagulation or antiplatelet therapyKjeldsen, J., Kjærulf Pless, T., Meisner, S. & Bytzer, P., 20. Apr 2009, In : Ugeskrift for læger. 171, 17, p. 1384-6 2 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Frequency and clinical impact of incidental findings at MRI of the small bowel in patients with suspected and known Crohn's disease

Dam Jensen, M., Kjeldsen, J., Nathan, T. & Rafaelsen, S. R., 2009, In : Journal of Crohn's and Colitis. p. 28-29

Research output: Contribution to journalConference abstract in journalResearch

Incidental findings at MRI og the small intestine in patients with suspected and known Crohn's disease

Dam Jensen, M., Rafaelsen, S. R., Kjeldsen, J. & Nathan, T., 2009.

Research output: Contribution to conference without publisher/journalPosterResearch

2010

Better Diagnostic Accuracy with Capsule Endoscopy Compared to MRI- and CT-enterography in Patients with Suspected or Newly Diagnosed Crohn's Disease

Dam Jensen, M., Nathan, T., Rafaelsen, S. R. & Kjeldsen, J., 2010. 1 p.

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearch

Incidental findings at MRI-enterography in patients with suspected or known Crohn's disease

Jensen, M. D., Nathan, T., Kjeldsen, J. & Rafaelsen, S. R., 7. Jan 2010, In : World Journal of Gastroenterology. 16, 1, p. 76-82 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Inflammatory Bowel Diseases
Small Intestine
Referral and Consultation

Inter-abserver Agreement for Detection of Small Bowel Crohn's Disease with Capsule Endoscopy.

Dam Jensen, M., Nathan, T. & Kjeldsen, J., 1. May 2010.

Research output: Contribution to conference without publisher/journalPosterResearch

Inter-observer agreement for detection of small bowel Crohn's disease with capsule endoscopy

Jensen, M. D., Nathan, T. & Kjeldsen, J., 2010, In : Scandinavian Journal of Gastroenterology. 45, 7-8, p. 878-84 7 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Inter-observer Agreement for Detection of Small Bowel Crohn’s Disease with Capsule Endoscopy

Jensen, M. D., Nathan, T. & Kjeldsen, J., 2010, In : Gastroenterology.

Research output: Contribution to journalConference abstract in journalResearch

Kroniske inflammatoriske tarmlidelser

Kjeldsen, J., Dahlerup, J. F., Christensen, L. A. & Agnholt, J. S., 2010, Immuninflammatoriske sygdomme - baggrund og biologiske lægemidler. FADL's Forlag, p. 163-172 10 p.

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

Patients with suspected irritable bowel syndrome in primary care - Demographic and clinical characteristics

Begtrup, L. M., Engsbro, A. L. Ø., Kjeldsen, J., Kragstrup, J., Bytzer, P., Schaffalitzky de Muckadell, O. B. & Jarbøl, D. E., 2010, In : Scandinavian Journal of Gastroenterology. 45, supplement 247, p. 83-84 2 p.

Research output: Contribution to journalConference abstract in journalResearch

2011

Diagnostic accuracies of MR enterography and CT enterography in symptomatic Crohn's disease

Jensen, M. D., Kjeldsen, J., Rafaelsen, S. R. & Nathan, T., 2011, In : Scandinavian Journal of Gastroenterology. 46, 12, p. 1449-1457 9 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Pathologic Constriction
Ileum
Preexisting Condition Coverage
Jejunum

Diagnostic accuracy of capsule endoscopy for small bowel Crohn's disease is superior to that of MR enterography or CT enterography

Jensen, M. D., Nathan, T., Rafaelsen, S. R. & Kjeldsen, J., Feb 2011, In : Clinical Gastroenterology and Hepatology. 9, 2, p. 124-9 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Capsule Endoscopy
Crohn Disease

Fecal calprotectin is equally sensitive in Crohn's disease affecting the small bowel and colon

Jensen, M. D., Kjeldsen, J. & Nathan, T., 2011, In : Scandinavian Journal of Gastroenterology. 46, 6, p. 694-700

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Colon

Fecal calprotectin is equally sensitive in isolated colonic and small bowel Crohn's disease

Jensen, M. D., Kjeldsen, J. & Nathan, T., 2011.

Research output: Contribution to conference without publisher/journalPosterResearch

Fecal calprotectin is equally sensitive in isolated colonic and small bowel Crohn’s disease

Jensen, M. D., Kjeldsen, J. & Nathan, T., 2011, In : Gastroenterology. 140, 5 Suppl. 1, p. S690

Research output: Contribution to journalConference abstract in journalResearch

Increased expression of T-cell KV1.3 and KCa3.1 channels in the inflamed intestinal wall from patients with active ulcerative colitis

Hansen, L. K., Larsen, D., Sadda, V., Nielsen, G., Klinge, L., Schaffalitzky de Muckadell, O. B., Knudsen, T., Kjeldsen, J. & Köhler, R., 22. Oct 2011. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearch

Ulcerative Colitis
Colitis
Mucous Membrane
Intestinal Mucosa
Cell Movement

Low sensitivity of MR- and CT-enterography for detection of small bowel stenosis in patients with known Crohn’s disease

Jensen, M. D., Kjeldsen, J., Rafaelsen, S. R. & Nathan, T., 2011, In : Gastroenterology. 140, 5, Suppl 1, p. S759-760

Research output: Contribution to journalConference abstract in journalResearch

Low sensitivity of MR- and CT-enterography for detection of small bowel stenosis in patients with known Crohn’s disease

Jensen, M. D., Kjeldsen, J., Rafaelsen, S. R. & Nathan, T., 2011.

Research output: Contribution to conference without publisher/journalPosterResearch

Øget ekspression af T-celle KV1.3 og KCa3.1 kanaler i biopsier fra patienter med aktiv Colitis Ulcerosa

Hansen, L. K., Larsen, D., Sadda, V., Nielsen, G., Klinge, L., Knudsen, T., Kjeldsen, J., Schaffalitzky de Muckadell, O. B. & Köhler, R., 2. Sep 2011.

Research output: Contribution to conference without publisher/journalPosterResearch

2012

Guidelines for screening, prophylaxis and critical information prior to initiating anti-TNF-alpha treatment

Nordgaard-Lassen, I., Dahlerup, J. F., Belard, E., Gerstoft, J., Kjeldsen, J., Kragballe, K., Ravn, P., Sørensen, I. J., Theede, K. & Tjellesen, L., 2012, In : Danish Medical Journal. 59, 7, p. C4480

Research output: Contribution to journalJournal articleResearchpeer-review

Tumor Necrosis Factor-alpha
Human Herpesvirus 3
Guidelines
Gastroenterology
Virus Diseases

Ileoscopy reduces the need for small bowel imaging in suspected Crohn's disease

Jensen, M. D., Nathan, T., Rafaelsen, S. R. & Kjeldsen, J., 2012, In : Danish Medical Journal. 59, 9, p. A4491

Research output: Contribution to journalJournal articleResearchpeer-review

Capsule Endoscopy
Crohn Disease
Guidelines
Ulcerative Colitis
Cohort Studies
Tumor Necrosis Factor-alpha
2013

94 Treatment of Secondary Infliximab Failure in Crohn's Disease Based on Serum Levels of Infliximab and Antibodies Against Infliximab: The Danish Study of Optimizing Infliximab Therapy in Crohn's Disease (Do It Crohn) Randomized Clinical Trial

Steenholdt, C., Brynskov, J., Thomsen, O., Munck, L. K., Fallingborg, J., Christensen, L. A., Pedersen, G., Kjeldsen, J., Jacobsen, B. A., Oxholm, A. S., Kjellberg, J., Bendtzen, K. & Ainsworth, M. A., 2013, In : Gastroenterology. 144, 5, Supplement 1, p. S-22

Research output: Contribution to journalJournal articleResearchpeer-review

Irritable Bowel Syndrome
Quality of Life
Primary Health Care
Guidelines
Sigmoidoscopy

Biologic therapy in inflammatory bowel disease

Theede, K., Dahlerup, J. F., Fallingborg, J., Hvas, C. L., Kjeldsen, J., Munck, L. K. & Nordgaard-Lassen, I., 2013, In : Danish Medical Journal. 60, 6, B4652.

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Immunosuppressive Agents
Ulcerative Colitis
Crohn Disease

High expression level of the T cell potassium channel, KV1.3, is a novel diagnostic marker of inflammatory activity in patients with ulcerative colitis

Hansen, L. K., Larsen, D., Knudsen, T., Kjeldsen, J. & Köhler, R., 16. Feb 2013.

Research output: Contribution to conference without publisher/journalPosterCommunication

Letter: number of treatments with anti-TNF-α and reoperations in inflammatory bowel disease

Nørgård, B. M., Nielsen, J., Kjeldsen, J. & Qvist, N., 2013, In : Alimentary Pharmacology and Therapeutics. 37, 10, p. 1028-1029

Research output: Contribution to journalComment/debateResearchpeer-review

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Irritable Bowel Syndrome
Probiotics
Primary Health Care
Placebos
Quality of Life

Patients Suspected of Irritable Bowel Syndrome-Cross-Sectional Study Exploring the Sensitivity of Rome III Criteria in Primary Care

Engsbro, A. L., Begtrup, L. M., Kjeldsen, J., Larsen, P. V., de Muckadell, O. S., Jarbøl, D. E. & Bytzer, P., Jun 2013, In : American Journal of Gastroenterology. 108, 6, p. 972-80

Research output: Contribution to journalJournal articleResearchpeer-review

Irritable Bowel Syndrome
Primary Health Care
Cross-Sectional Studies
General Practitioners
Guidelines
Crohn Disease
Cohort Studies
Reoperation
Registries
Odds Ratio

Scintigrapfic evaluation of pouch function in patients with ulcerative colitis

Kjær, M. D., Hvidsten, S., Simonsen, J. A., Kjeldsen, J. & Qvist, N., 14. Nov 2013. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearch

Scintigraphic evaluation of pouch function in patients with ulcerative colitis

Kjær, M. D., Simonsen, J. A., Hvidsten, S., Kjeldsen, J. & Qvist, N., 4. Dec 2013.

Research output: Contribution to conference without publisher/journalPosterResearch