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Keywords:
Cardiac, MR, Outcomes analysis, Surgery, Patterns of Care, Outcomes
Authors:
J.-W. Kang, W. J. Choi, D. H. Yang, T.-H. Lim; Seoul/KR
DOI:
10.1594/ecr2015/C-1797
Methods and materials
In our institution,
there were 841 patients who underwent TV surgery during about 7 years,
and among them,
111 consecutive patients who had preoperative cardiac MRI were enrolled in this study.
Mean age of the patient was 55.8 years old,
mean MRI - Operation interval time was 22.7 days,
and median F/U duration was 417 days.
The cardiac MRI was achieved by 1.5-T machine.
Using the commercially available software (CVI® Version 5.0,
Circle Cardiovascular Imaging Inc.,
Canada),
we measured the RV and left ventricle (LV) functional parameters in short axis cine images.
Ejection fraction (EF),
end-systolic and end-diastolic ventricular volume (EDV and ESV),
ventricle mass of the two ventricles,
LV delayed enhancement were measured and recorded.
Patients’ clinical parameters were also recorded,
including known risk factors such as DM,
HTN,
stroke,
LC by reviewing of electronic medical chart.
And the numbers of previous operation,
combined procedures such as any other surgery were also recored.
By reviewing of preoperative echocardiography report,
grade of the patient’s valvular disease,
and functional parameters of LV,
including ESV,
EDV and so on were also recorded.
The outcome of this study was all cause of death,
cardiac cause of death,
re-hospitalization due to heart failure or re-operation.
Using Cox proportional hazards method,
univariate analysis was performed,
and adjusting of known risk factors,
multivariate regression analysis was performed.
And using Kaplan-Meier method,
survival curves of different RV function were produced.