Cardiac Autonomic Nervous System in Heart Failure: Imaging Technique and Clinical Implications
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منابع مشابه
Cardiac Autonomic Nervous System in Heart Failure: Imaging Technique and Clinical Implications
The autonomic nervous system interacts in the pathophysiology of heart failure. Dysfunction of the sympathetic nervous system has been identified as an important prognostic marker in patients with chronic heart failure. At present, cardiac sympathetic nerve imaging with 123-iodine metaiodobenzylguanidine [123-I MIBG] has been employed most frequently for the assessment of cardiac sympathetic in...
متن کاملThe autonomic nervous system and heart failure.
The pathophysiology of heart failure (HF) is characterized by hemodynamic abnormalities that result in neurohormonal activation and autonomic imbalance with increase in sympathetic activity and withdrawal of vagal activity. Alterations in receptor activation from this autonomic imbalance may have profound effects on cardiac function and structure. Inhibition of the sympathetic drive to the hear...
متن کاملIntrinsic cardiac nervous system in tachycardia induced heart failure.
The purpose of this study was to test the hypothesis that early-stage heart failure differentially affects the intrinsic cardiac nervous system's capacity to regulate cardiac function. After 2 wk of rapid ventricular pacing in nine anesthetized canines, cardiac and right atrial neuronal function were evaluated in situ in response to enhanced cardiac sensory inputs, stimulation of extracardiac a...
متن کاملTHE INTRINSIC CARDIAC NERVOUS SYSTEM in TACHYCARDIA INDUCED HEART FAILURE
Objective: To test the hypothesis that early stage heart failure differentially affects the intrinsic cardiac nervous system’s capacity to regulate cardiac function. Methods: Following 2 wks of rapid ventricular pacing, in 9 anesthetized canines, cardiac and right atrial neuronal function were evaluated in situ in response to enhanced cardiac sensory inputs, stimulation of extracardiac autonomi...
متن کاملThe sympathetic nervous system in heart failure physiology, pathophysiology, and clinical implications.
Heart failure is a syndrome characterized initially by left ventricular dysfunction that triggers countermeasures aimed to restore cardiac output. These responses are compensatory at first but eventually become part of the disease process itself leading to further worsening cardiac function. Among these responses is the activation of the sympathetic nervous system (SNS) that provides inotropic ...
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ژورنال
عنوان ژورنال: Current Cardiology Reviews
سال: 2011
ISSN: 1573-403X
DOI: 10.2174/157340311795677725