Saha, S.
Baraki, H.
Kutschka, I.
Hadem, J.
Article History
Received: 21 June 2017
Revised: 10 August 2017
Accepted: 11 September 2017
First Online: 17 October 2017
Compliance with ethical guidelines
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: S. Saha, H. Baraki, I. Kutschka, and J. Hadem declare that they have no competing interests.
: All patients consented to the cardiac surgery, postoperative treatment and data acquisition performed as part of routine patient care. All procedures described in this study were in accordance with the institutional research committee, national data safety regulations, and the 1964 Helsinki declaration and its last amendment by the 64th WMA General Assembly, Fortaleza, Brazil, October 2013. Informed patient consent was not required by the institutional research committee for this retrospective, noninterventional study.