Key result
Sinusoidal neck suction at 0.1 Hz increased low-frequency RR interval fluctuations in heart transplant recipients (from 0.73 to 1.30 ln ms2, P<0.001), indicating functional sympathetic reinnervation.
Why the study?
Does carotid baroreflex modulation by sinusoidal neck suction demonstrate cardiac reinnervation in heart transplant recipients?
Cross-Sectional (n=42)
Does carotid baroreflex modulation by sinusoidal neck suction demonstrate cardiac reinnervation in heart transplant recipients?
p-value: p=<0.001
Carotid baroreflex modulation demonstrates functional, sympathetic autonomic reinnervation in patients after heart transplantation.
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Neck suction baroreflex testing may detect sympathetic reinnervation post-transplant; extends autonomic recovery evidence but remains hypothesis-generating.
Bernardi et al. (1995) conducted a cross-sectional in Heart transplantation (n=42). Sinusoidal neck suction vs. Control subjects and baseline measurements was evaluated on Power of low-frequency (RR-LF) and high-frequency (RR-HF) RR interval fluctuations (p=<0.001). Sinusoidal neck suction at 0.1 Hz increased low-frequency RR interval fluctuations in heart transplant recipients (from 0.73 to 1.30 ln ms2, P<0.001), indicating functional sympathetic reinnervation.
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