Cardiac Sympathetic-Parasympathetic Interaction
نویسندگان
چکیده
منابع مشابه
Diabetic cardiac autonomic dysfunction: parasympathetic versus sympathetic.
BACKGROUND Diabetic cardiac autonomic dysfunction often causes lethal arrhythmia and sudden cardiac death. 123I-Metaiodobenzylguanidine (MIBG) can evaluate cardiac sympathetic dysfunction, and analysis of heart rate variability (HRV) can reflect cardiac parasympathetic activity. We examined whether cardiac parasympathetic dysfunction assessed by HRV may correlate with sympathetic dysfunction as...
متن کاملSympathetic-parasympathetic interactions in the heart.
We determined the influence of differences in the time of initiation of sympathetic and vagal stimulation (both at 10 Hz) on the cardiac autonomic interactions in 16 open-chest anesthetized dogs. We always ended the concurrent sympathetic and vagal stimulations simultaneously. Sympathetic stimulation alone for 1 minute increased heart rate by 90±7 (mean+SEM) beats per minute, and vagal stimulat...
متن کاملParasympathetic control of cardiac sympathetic activity: normal ventricular function versus congestive heart failure.
BACKGROUND Muscarinic receptors on adrenergic nerve terminals attenuate norepinephrine release. The role of these receptors in the modulation of cardiac norepinephrine release in humans remains uncertain. METHODS AND RESULTS Twelve patients with normal left ventricular (LV) function and 18 with congestive heart failure (CHF) were studied. A radiotracer technique was used to measure cardiac no...
متن کاملDevelopmental changes in GABAergic neurotransmission to pre - sympathetic and cardiac 1 parasympathetic neurons in the brainstem
24 Cardiovascular function is regulated by a dynamic balance comprised of sympathetic and 25 parasympathetic activity. Sympathoexcitatory pre-sympathetic neurons (PSNs) in the 26 rostral ventrolateral medulla (RVLM) project directly to cardiac and vasomotor 27 sympathetic preganglionic neurons in the spinal cord. In proximity to the PSNs in the 28 medulla there are preganglionic cardiac vagal n...
متن کاملQuantifying cardiac sympathetic and parasympathetic nervous activities using principal dynamic modes analysis of heart rate variability.
The ratio between low-frequency (LF) and high-frequency (HF) spectral power of heart rate has been used as an approximate index for determining the autonomic nervous system (ANS) balance. An accurate assessment of the ANS balance can only be achieved if clear separation of the dynamics of the sympathetic and parasympathetic nervous activities can be obtained, which is a daunting task because th...
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ژورنال
عنوان ژورنال: JACC: Basic to Translational Science
سال: 2020
ISSN: 2452-302X
DOI: 10.1016/j.jacbts.2020.07.004