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Kristofer Hedman

Senior Associate Professor

I strive for better understanding of how heart, blood vessels and lungs adapt to physical activity, both in short terms (such as during an exercise test) and in long term (such as after a period of physical training).

Presentation

Improved Assessment Before Major Surgery

I lead projects aimed at refining the assessment of physical functional capacity before major surgical procedures. This can, in turn, provide a more accurate evaluation of which individuals are at increased risk of experiencing severe complications during or shortly after surgery. This allows for preventive measures to be taken to reduce this risk, as well as to minimize suffering and prolonged hospital stay. The research projects includes advanced exercise physiology methods with analysis of respiratory gases and ventilation (cardiopulmonary exercise testing), as well as attempts to identify individuals where simpler, low-technology methods can be used, which can both speed up the process leading to surgery and be a wise clinical choice that helps prioritize healthcare resources.

Blood Pressure Response During Exercise

In this project, I study what constitutes a normal versus an abnormal blood pressure response during an exercise test, to compare blood pressure values and blood pressure progression measured during clinical exercise tests against a standard value. The project also investigates whether an abnormal blood pressure response during exercise can be used to predict which individuals are at increased risk of later developing high blood pressure (hypertension), cardiovascular disease, or experiencing premature death. The project is a collaboration with researchers within the South Eastern Healthcare Region and with international partners at KU Leuven in Belgium.

Physiological Findings in Individuals with Prolonged Symptoms After COVID-19 Infection

Some individuals suffer from very long-lasting symptoms after recovering from COVID-19, known as post-COVID. My research focuses on better understanding the physiological factors behind reduced fitness or increased breathlessness in a large portion of these individuals. The project involves collaboration with Professor Maria Lerm at Linköping University, where we link the patient's symptoms, physiological abnormalities, and changes in DNA (so-called epigenetic changes).

About me

Research path

  • Associate professor (Docent) 2020.
  • Post-doc at Stanford University, California 2018-2019.
  • Medical doctor/physician 2016.
  • PhD 2016
  • MSc in Medicine 2012, Linköpings University
  • BSc Physiotherapy 2009, Linköping University

 

Other

MD, Clinical Fellow. Dept of Clinical Physiology, Linköping University Hospital

Publications

2025

Elin Stark, Edvard Gerring, Johan Hylander, Bergthor Björnsson, Per Sandström, Kristofer Hedman, Karolina Kristenson (2025) Different measures of ventilatory efficiency in preoperative cardiopulmonary exercise testing are useful for predicting postoperative complications in abdominal cancer surgery Acta Anaesthesiologica Scandinavica, Vol. 69, Article e14562 (Article in journal) Continue to DOI

2024

Lisa M. J. Eriksson, Kristofer Hedman, Meriam Åström, Eva Nylander, Karin Bouma, Mirko Mandic, Thomas Gustafsson, Eric Rullman (2024) Evidence of Left Ventricular Cardiac Remodeling After 6 Weeks of Sprint Interval Training Scandinavian Journal of Medicine and Science in Sports, Vol. 34, Article e70007 (Article in journal) Continue to DOI
Viktor Elmberg, Xingwu Zhou, Thomas Lindow, Kristofer Hedman, Andrei Malinovschi, Hayley Lewthwaite, Dennis Jensen, Lars Brudin, Magnus Ekstrom (2024) Abnormally high exertional breathlessness predicts mortality in people referred for incremental cycle exercise testing PLOS ONE, Vol. 19, Article e0302111 (Article in journal) Continue to DOI
Karolina Kristenson, Kristofer Hedman (2024) Percent predicted peak oxygen uptake is superior to weight-indexed peak oxygen uptake in risk stratification before lung cancer lobectomy Journal of Thoracic and Cardiovascular Surgery, Vol. 168 (Article in journal) Continue to DOI
Carl Bellander, Henric Nilsson, Eva Nylander, Kristofer Hedman, Eva Tamas (2024) Cardiopulmonary exercise testing in aortic stenosis patients before and after aortic valve replacement Open heart, Vol. 11, Article e002786 (Article in journal) Continue to DOI

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