Digital Public Defence: Ingvild Vik

MD Ingvild Vik at Institute of Health and Society will be defending the thesis “Treatment of uncomplicated lower urinary tract infections in adult non-pregnant women in primary care” for the degree of PhD (Philosophiae Doctor).

Image may contain: Smile, Jaw, Sleeve, Happy, Throat.

Photo: Anbjørg Kolaas/UiO.

The public defence will be held as a video conference over Zoom.

The defence will follow regular procedure as far as possible, hence it will be open to the public and the audience can ask ex auditorio questions when invited to do so.

Click here to participate in the public defence

Download Zoom here

Due to copyright reasons, an electronic copy of the thesis must be ordered from the faculty. In order for the faculty to have time to process the order, it must be received by the faculty no later than 2 days prior to the public defence. Orders received later than 2 days before the defence will not be processed. Inquiries regarding the thesis after the public defence must be addressed to the candidate.

Digital Trial Lecture – time and place

See Digital Trial Lecture.

Adjudication committee

  • First opponent: Associate Professor Malene Plejdrup Hansen, Center for general practice, University of Aalborg, Denmark
  • Second opponent: Professor Hasse Melbye, The Arctic University of Norway (UiT), Department of Community Medicine
  • Third member and chair of the evaluation committee: Professor Terje Hagen, University of Oslo

Chair of the Defence

Associate Professor Anne Kveim Lie, Faculty of Medicine, University of Oslo

Principal Supervisor

 Morten Lindbæk, Senior Adviser, Faculty of Medicine, University of Oslo


Uncomplicated lower urinary tract infection (uUTI) is the most common bacterial infection in women and the second most common reason to prescribe antibiotics in primary care. Most uUTIs are self-limiting, but they are commonly treated with antibiotics as this gives quick symptom relief. Antibiotic use is the main contributor to antibiotic resistance, and to stop the rapid development it is crucial that we reduce unnecessary use of antibiotics. The overall aim of the thesis was to explore whether treatment with ibuprofen could be a safe and effective alternative to antibiotics (pivmecillinam) in women with uUTIs.

Vik and colleagues performed a randomised controlled trial comparing ibuprofen to pivmecillinam in the treatment of uUTI in non-pregnant women aged 18-60 years. A total of 383 women were randomly assigned to treatment with either ibuprofen (n=194, 181 analysed) or pivmecillinam (n=189, 178 analysed). By day 4, 39% of the patients in the ibuprofen group felt cured versus 74% in the pivmecillinam group. They found that ibuprofen was inferior to pivmecillinam in treating uUTIs. More than half of the women in the ibuprofen group recovered without antibiotics, but pyelonephritis occurred in 3.9%. No baseline information could significantly predict the need for antibiotic treatment. Given the current knowledge, a wait-and-see strategy can be recommended for women with symptoms of uUTI. Combined with a backup prescription of antibiotic treatment, symptom relief with 400 mg of ibuprofen up to three times a day seems safe to advice.

A retrospective comparison of three cohorts was performed to evaluate the bacteriological findings and resistance patterns in urine samples from women with uUTIs in Norway from 2000-2015. Pivmecillinam and nitrofurantoin are both good choices for empirical treatment of uUTIs. High levels of resistance challenge the rationale for using trimethoprim as a first-line agent.

Additional information

Contact the research support staff.

Published June 4, 2021 9:30 AM - Last modified Sep. 13, 2021 10:42 AM