Measuring Valve Area in Heart Surgery Patients
Author Information
Author(s): Machida Haruhiko, Hirata Masami, Kojima Shinya, Suzuki Kazufumi, Ueno Eiko, Sasaki Akihito, Nakano Kiyoharu
Primary Institution: Tokyo Women's Medical University Medical Center East
Hypothesis
Phase-contrast cine MR imaging can accurately measure the effective orifice area of bileaflet mechanical valves in patients after aortic valve replacement.
Conclusion
Phase-contrast cine MR imaging is a feasible and accurate method for measuring the effective orifice area of bileaflet mechanical valves in patients after aortic valve replacement.
Supporting Evidence
- Phase-contrast cine MR imaging provided effective orifice area measurements for all patients.
- The correlation between MR measurements and reference values was strong.
- Most measurement differences were within 0.2 cm2.
Takeaway
Doctors can use a special type of MRI to measure how well heart valves work after surgery, and it works pretty well.
Methodology
The study used phase-contrast cine MR imaging to measure effective orifice area in 17 patients who had aortic valve replacement.
Limitations
The study had a small sample size and only included asymptomatic patients.
Participant Demographics
8 men and 9 women, mean age 66.2 ± 15.2 years.
Statistical Information
P-Value
0.002
Statistical Significance
p = 0.002
Digital Object Identifier (DOI)
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