Birna Bjarnason-Wehrens

Prof. Birna Bjarnason-Wehrens

nstitute for Cardiology and Sports Medicine, Dep. Preventive and Rehabilitative Sport Medicine and Exercise Physiology, German Sport University Cologne, Germany
orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 August 2010 in European Journal of Preventive Cardiology
Verified
Journal Article
Closed access
BBBirna Bjarnason-Wehrens
Birna Bjarnason-Wehrens
HMHannah McGee
Hannah McGee
AZAnn-Dorthe Zwisler
Ann-Dorthe Zwisler
MPMassimo F. Piepoli
Massimo F. Piepoli
WBWerner Benzer
Werner Benzer
MMMiguel Mendes
Miguel Mendes
Background Cardiac rehabilitation (CR) programmes support patients to achieve professionally recommended cardiovascular prevention targets and thus good clinica...

8 June 2019 in European Journal of Preventive Cardiology
Verified
Journal Article
Open access
PDF file
BBBirna Bjarnason-Wehrens
Birna Bjarnason-Wehrens
RNR Nebel
R Nebel
KJK Jensen
K Jensen
MHM Hackbusch
M Hackbusch
MGM Grilli
M Grilli
F(for the German Society of Cardiovascular Prevention and Rehabilitation (DGPR)
for the German Society of Cardiovascular Prevention and Rehabilitation (DGPR)
Background: In heart failure with reduced left ventricular ejection fraction (HFrEF) patients the effects of exercise-based cardiac rehabilitation on top of state-of-the-art pharmacological and device therapy on mortality, hospitalization, exercise capacity and quality-of-life are not well established.Design: The design of this study involved a structured review and meta-analysis.Methods: Evaluation of randomised controlled trials of exercise-based cardiac rehabilitation in HFrEF-patients with left ventricular ejection fraction ≤40% of any aetiology with a follow-up of ≥6 months published in 1999 or later.Results: Out of 12,229 abstracts, 25 randomised controlled trials including 4481 HFrEF-patients were included in the final evaluation. Heterogeneity in study population, study design and exercise-based cardiac rehabilitation-intervention was evident. No significant difference in the effect of exercise-based cardiac rehabilitation on mortality compared to control-group was found (hazard ratio 0.75, 95% confidence interval 0.39–1.41, four studies; 12-months follow-up: relative risk 1.29, 95% confidence interval 0.66–2.49, eight studies; six-months follow-up: relative risk 0.91, 95% confidence interval 0.26–3.16, seven studies). In addition there was no significant difference between the groups with respect to ‘hospitalization-for-any-reason’ (12-months follow-up: relative risk 0.79, 95% confidence interval 0.41–1.53, four studies), or ‘hospitalization-due-to-heart-failure’ (12-months follow-up: relative risk 0.59, 95% confidence interval 0.12–2.91, four studies; six-months follow-up: relative risk 0.84, 95% confidence interval 0.07–9.71, three studies). All studies show improvement of exercise capacity. Participation in exercise-based cardiac rehabilitation significantly improved quality-of-life as evaluated with the Kansas City Cardiomyopathy Questionnaire: (six-months follow-up: mean difference 1.94, 95% confidence interval 0.35–3.56, two studies), but no significant results emerged for quality-of-life measured by the Minnesota Living with Heart Failure Questionnaire (nine-months or more follow-up: mean difference –4.19, 95% confidence interval –10.51–2.12, seven studies; six-months follow-up: mean difference –5.97, 95% confidence interval –16.17–4.23, four studies).Conclusion: No association between exercise-based cardiac rehabilitation and mortality or hospitalisation could be observed in HFrEF patients but exercise-based cardiac rehabilitation is likely to improve exercise capacity and quality of life.

28 August 2004 in European Journal of Preventive Cardiology
Verified
Journal Article
Open access
BBBirna Bjarnason-Wehrens
Birna Bjarnason-Wehrens
WMW. Mayer-Berger
W. Mayer-Berger
EME.R. Meister
E.R. Meister
KBK. Baum
K. Baum
RHR. Hambrecht
R. Hambrecht
SGS. Gielen
S. Gielen
Aerobic endurance training has been an integral component of the international recommendations for cardiac rehabilitation for more than 30 years. Notwithstanding, only in recent years have recommen...

23 September 2022 in American Journal of Physical Medicine & Rehabilitation
Verified
Journal Article
Open access
CSCarolin Steinmetz
Carolin Steinmetz
BBBirna Bjarnason-Wehrens
Birna Bjarnason-Wehrens
TWThomas Walther
Thomas Walther
TSTim Fabian Schaffland
Tim Fabian Schaffland
CWClaudia Walther
Claudia Walther
Objective: Patients awaiting cardiac surgery seem to benefit from exercise-based prehabilitation, but the impact on different perioperative outcomes compared with standard care is still unclear. Design: Eligible nonrandomized/randomized controlled studies investigating the impact of exercise-based prehabilitation in adults scheduled for elective cardiac surgery were searched on December 16, 2020, from electronic databases, including MEDLINE, CENTRAL, and CINAHL. The data were pooled and a meta-analysis was conducted. Results: Of 1490 abstracts, six studies (n = 665) were included into the review and meta-analysis. At postintervention interval and at postsurgery interval, 6-min-walking distance improved significantly in exercise-based prehabilitation group compared with controls (mean difference, 75.4 m; 95% confidence interval, 13.7 to 137.1 m, P = 0.02, and 30.5 m, 95% confidence interval, 8.5 to 52.6 m, P = 0.007, respectively). Length of hospital stay was significantly shorter in exercise-based prehabilitation group (mean difference, −1.00 day; 95% confidence interval, −1.78 to −0.23 day, P = 0.01). Participation in exercise-based prehabilitation revealed a significant decrease in the risk of postoperative atrial fibrillation in patients 65 yrs or younger (risk ratio, 0.34; 95% confidence interval, 0.14 to 0.83, P = 0.02). Conclusions: The participation in exercise-based prehabilitation significantly improves postintervention and postsurgery 6-min walking distance, length of hospital stay, and decreases the risk of postoperative atrial fibrillation in patients 65 yrs or younger compared with controls.

1 February 2007 in European Journal of Preventive Cardiology
Verified
Journal Article
Closed access
MKMarthin Karoff
Marthin Karoff
KHKlaus Held
Klaus Held
BBBirna Bjarnason-Wehrens
Birna Bjarnason-Wehrens
The purpose of this review is to give an overview of the rehabilitation measures provided for cardiac patients in Germany and to outline its legal basis and out...

1 October 2007 in Cardiology in the Young
Verified
Journal Article
Closed access
BBBirna Bjarnason-Wehrens
Birna Bjarnason-Wehrens
SDSigrid Dordel
Sigrid Dordel
SSSabine Schickendantz
Sabine Schickendantz
CKConstanze Krumm
Constanze Krumm
DBDaniel Bott
Daniel Bott
KBKonrad Brockmeier
Konrad Brockmeier
Their perceptual and motor experiences determine the physical and motor development of children, and impact also on their emotional, psychosocial, and cognitive development. Our aim, therefore, was to evaluate motor development in children with congenitally malformed hearts compared to their healthy peers.We compared 194 children, with a mean age of 10.0 years, and standard deviation of 2.7 years, representing the entire spectrum of congenital cardiac disease, to a control group of 455 healthy children, having a mean age 9.6 years, with standard deviation of 2.17 years. The bodily coordination test for children was used to examine motor development.Of the children with congenitally malformed hearts, 26.8% showed moderate, and 31.9% had severe disturbances of motor development, compared to 16.5% and 5.5% of the control group, the p-value for these differences being less than 0.001. The mean motor quotient adjusted for age and gender was lower in the children with congenitally malformed hearts than in their healthy peers, at 79.6, with standard deviation of 18.9 as opposed to 96.6, with standard deviation of 15, this difference having a p-value of less than 0.001. Depending on the presence, and/or the degree, of residual sequels, the children with congenitally malformed hearts were divided into two subgroups, with either no or mild residual sequels, or with significant sequels. The mean motor quotient was lower in those with significant residual sequels, at 75, with standard deviation of 19.3, as opposed to 83, with standard deviation of 17.9, the p-value for this difference being less than 0.01. In both subgroups, the mean motor quotient was lower, with a p-value of less than 0.01, than in the control group.Our findings show that children with congenitally malformed hearts have deficits in their motor development, these being found in the presence of no or mild sequels, as well as with significant residual sequels. Parental overprotection may contribute to these findings.