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- Title
Acute effect of spinal cord stimulation on autonomic nervous system function in patients with heart failure.
- Authors
Naar, Jan; Jaye, Deborah; Neužil, Petr; Doškář, Petr; Málek, Filip; Linderoth, Bengt; Lind, Göran; Ståhlberg, Marcus
- Abstract
Aims: To test the hypothesis that spinal cord stimulation (SCS) acutely improves heart rate variability (HRV) and baroreceptor sensitivity (BRS) in patients with heart failure (HF). Methods: SCS (15 minutes) was delivered in four different settings: 90% of maximal tolerated stimulation amplitude (MTA) targeting the T1 -- T4 spinal cord segments (SCS90T1-4), 60% of MTA (SCS60T1-4), 90% of MTA with cranial (SCS90CR) and caudal (SCS90CA) electrode configuration. HRV and BRS were recorded continuously and stimulation was compared to device off. Results: Fifteen HF patients were included. SCS90T1-4 did not change the standard deviation of intervals between normal beats (SDNN, p = 0.90), BRS (p = 0.55) or other HRV parameters. In patients with baseline SDNN <50 ms, SCS90T1-4 significantly increased SDNN (p = 0.004). Conclusions: Acute SCS at 60-90% of MTA targeting upper thoracic spinal cord segments does not improve autonomic balance or baroreceptor sensitivity in unselected patients with heart failure but may improve HRV in patients with low SDNN.
- Subjects
SPINAL cord; AUTONOMIC nervous system; HEART failure; HEART beat; BARORECEPTORS
- Publication
Journal of Applied Biomedicine, 2021, Vol 19, Issue 3, p133
- ISSN
1214-021X
- Publication type
Article
- DOI
10.32725/jab.2021.012