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Meta-Analysis
. 2015 Feb 6;10(2):e0117332.
doi: 10.1371/journal.pone.0117332. eCollection 2015.

A systematic review concerning the relation between the sympathetic nervous system and heart failure with preserved left ventricular ejection fraction

Willemien L Verloop  1 , Martine M A Beeftink  1 , Bernadet T Santema  1 , Michiel L Bots  2 , Peter J Blankestijn  3 , Maarten J Cramer  1 , Pieter A Doevendans  1 , Michiel Voskuil  1
Affiliations
Meta-Analysis

A systematic review concerning the relation between the sympathetic nervous system and heart failure with preserved left ventricular ejection fraction

Willemien L Verloop et al. PLoS One. .

Abstract

Background: Heart failure with preserved left ventricular ejection fraction (HFPEF) affects about half of all patients diagnosed with heart failure. The pathophysiological aspect of this complex disease state has been extensively explored, yet it is still not fully understood. Since the sympathetic nervous system is related to the development of systolic HF, we hypothesized that an increased sympathetic nerve activation (SNA) is also related to the development of HFPEF. This review summarizes the available literature regarding the relation between HFPEF and SNA.

Methods and results: Electronic databases and reference lists through April 2014 were searched resulting in 7722 unique articles. Three authors independently evaluated citation titles and abstracts, resulting in 77 articles reporting about the role of the sympathetic nervous system and HFPEF. Of these 77 articles, 15 were included for critical appraisal: 6 animal and 9 human studies. Based on the critical appraisal, we selected 9 articles (3 animal, 6 human) for further analysis. In all the animal studies, isoproterenol was administered to mimic an increased sympathetic activity. In human studies, different modalities for assessment of sympathetic activity were used. The studies selected for further evaluation reported a clear relation between HFPEF and SNA.

Conclusion: Current literature confirms a relation between increased SNA and HFPEF. However, current literature is not able to distinguish whether enhanced SNA results in HFPEF, or HFPEF results in enhanced SNA. The most likely setting is a vicious circle in which HFPEF and SNA sustain each other.

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Conflict of interest statement

Competing Interests: The authors confirm that Michiel Voskuil and Pieter Doevendans are PLOS ONE Editorial Board members. This does not alter the authors' adherence to PLOS ONE Editorial policies and criteria.

Figures

Fig 1
Fig 1. Flowchart of the search.
See this image and copyright information in PMC

References

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