Title |
Visualization of Heart Rate Variability of Long-Term Heart Transplant Patient by Transition Networks: A Case Report
|
---|---|
Published in |
Frontiers in Physiology, March 2016
|
DOI | 10.3389/fphys.2016.00079 |
Pubmed ID | |
Authors |
Joanna Wdowczyk, Danuta Makowiec, Karolina Dorniak, Marcin Gruchała |
Abstract |
We present a heart transplant patient at his 17th year of uncomplicated follow-up. Within a frame of routine check out several tests were performed. With such a long and uneventful follow-up some degree of graft reinnervation could be anticipated. However, the patient's electrocardiogram and exercise parameters seemed largely inconclusive in this regard. The exercise heart rate dynamics were suggestive of only mild, if any parasympathetic reinnervation of the graft with persisting sympathetic activation. On the other hand, traditional heart rate variability (HRV) indices were inadequately high, due to erratic rhythm resulting from interference of the persisting recipient sinus node or non-conducted atrial parasystole. New tools, originated from network representation of time series, by visualization short-term dynamical patterns, provided a method to discern HRV increase due to reinnervation from other reasons. |
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