Why the study?
Does the type of artificial valve implanted (mitral vs aortic) affect heart rate variability, and does decreased HRV predict long-term mortality?
Population
101 consecutive patients who underwent surgical implantation for an artificial valve, mean age 62 ± 10 years.
Comparison
Artificial mitral valve implantation vs Artificial aortic valve implantation
Design
Cohort
Follow-up
33 ± 21 months
Authors
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Lower HRV after mitral versus aortic valve replacement does not predict mortality; leaves open whether HRV monitoring informs post-surgical risk stratification.
Does the type of artificial valve implanted (mitral vs aortic) affect heart rate variability, and does decreased HRV predict long-term mortality?
Decreased heart rate variability is common several months after artificial valve implantation, particularly following mitral valve surgery, but it does not predict long-term mortality.
Lakušić et al. (2008) studied this question.
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