Why the study?
To test whether right ventricular longitudinal strain is significantly reduced while right ventricular ejection fraction remains unchanged at the end of cardiac surgery with extracorporeal circulation and cardioplegic arrest.
Does coronary artery bypass grafting with cardioplegic cardiac arrest alter right ventricular longitudinal strain and ejection fraction in patients with normal myocardial function?
Does coronary artery bypass grafting with cardioplegic cardiac arrest alter right ventricular longitudinal strain and ejection fraction in patients with normal myocardial function?
In patients undergoing CABG, right ventricular longitudinal contraction is impaired postoperatively but is compensated by increased circumferential contraction, maintaining a stable right ventricular ejection fraction.
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RV strain decline after CABG may signal subclinical impairment missed by EF; hypothesis-generating for compensatory mechanisms and monitoring.
Donauer et al. (2019) studied this question.
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