Photo of Kristofer Hedman

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

2026

Lina Hult, Kristofer Hedman, Carl Johan Östgren, Jonas Johnson, Fredrik H Nyström, Peter Blomstrand, Jan Engvall, David Kylhammar (2026) Left ventricular mechanical dispersion in a middle-aged population: associations with subclinical cardiac remodelling and cardiovascular risk Open heart, Vol. 13, Article e004114 (Article in journal) https://dx.doi.org/10.1136/openhrt-2026-004114
Joanna-Maria Papageorgiou, Tiny Jaarsma, Kristofer Hedman, Nadine Karlsson, Leonie Klompstra, Anna Strömberg (2026) Prognostic value of baseline and longitudinal changes in exercise capacity and quality of life in the HF-Wii Swedish population Open heart, Vol. 13, Article e004130 (Article in journal) https://dx.doi.org/10.1136/openhrt-2026-004130
Anders Blomberg, Daniel Arvidsson, Orjan Ekblom, Elin Ekblom-Bak, Yan Borne, Kenneth Caidahl, Anna Carlén, Magnus Dencker, Magnus Ekstrom, Maria J. Eriksson, Kristofer Hedman, Ola Hjelmgren, Christer Janson, Eva Lindberg, Maria Mannila, Andre Nyberg, Magnus Skold, Caroline Stridsman, Magnus Svartengren, Eva Swahn, Kjell Toren, Karin Wadell, Lowie E. G. W. Vanfleteren, Ding Zou, Carl Johan Östgren, Mats Borjesson (2026) Lower lung function and respiratory symptoms are associated with reduced accelerometer-measured physical activity in middle-aged adults Respiratory Medicine, Vol. 261, Article 109036 (Article in journal) https://dx.doi.org/10.1016/j.rmed.2026.109036
David Kylhammar, Lina Hult, Peter Blomstrand, Hannes Holm Isholth, Amra Jujic, Martin Magnusson, Carl Johan Östgren, Jan Engvall, Kristofer Hedman (2026) Diastolic dysfunction is equally common in pre-diabetes and diabetes and associated with concomitant cardiometabolic risk factors Open heart, Vol. 13, Article e004052 (Article in journal) https://dx.doi.org/10.1136/openhrt-2026-004052
Kristofer Hedman, Karolina Kristenson (2026) Comment on: European Respiratory Society and European Society of Thoracic Surgeons clinical practice guideline on fitness for curative intent treatment of lung cancer European Respiratory Journal, Vol. 67, Article 2502480 (Article in journal) https://dx.doi.org/10.1183/13993003.02480-2025

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