Respiratory Quotient Is Inversely Associated with Muscle Sympathetic Nerve Activity
نویسندگان
چکیده
منابع مشابه
Respiratory correlates of muscle sympathetic nerve activity in heart failure.
1. Sympathetic activation in congestive heart failure indicates a poor prognosis. Haemodynamic correlates of increased sympathetic nerve traffic to muscle (MSNA) and to the heart have been well characterized, but these account for only 50 to 60% of the variance in sympathetic activity between patients.2. In healthy subjects, breathing pattern modulates MSNA and positive airway pressure consiste...
متن کاملHigh muscle sympathetic nerve activity is associated with left ventricular dysfunction in treated hypertensive patients.
BACKGROUND The presence of asymptomatic left ventricular diastolic dysfunction (LVDD) in hypertensive patients can be associated with the development of cardiac events. The increase in sympathetic activity may be 1 of the mechanisms that predisposes to this outcome. In this study, we analyzed 2 hypotheses: (i) whether sympathetic activity is higher in the presence of LVDD, independent of blood ...
متن کاملMuscle Sympathetic Nerve Activity Is Associated with Liver Insulin Sensitivity in Obese Non-Diabetic Men
Introduction: Muscle sympathetic nerve activity (MSNA) may play a role in insulin resistance in obesity. However, the direction and nature of the relationship between MSNA and insulin resistance in obesity remain unclear. We hypothesized that resting MSNA would correlate inversely with both muscle and liver insulin sensitivity and that it would be higher in insulin-resistant vs. insulin-sensiti...
متن کاملSeasonal variation in muscle sympathetic nerve activity
Epidemiologic data suggest there are seasonal variations in the incidence of severe cardiac events with peak levels being evident in the winter. Whether autonomic indices including muscle sympathetic nerve activity (MSNA) vary with season remains unclear. In this report, we tested the hypothesis that resting MSNA varies with the seasons of the year with peak levels evident in the winter. We ana...
متن کاملRespiratory modulation of muscle sympathetic nerve activity in patients with chronic heart failure.
BACKGROUND Sympathoexcitation and respiratory instability are closely related to worsening of chronic heart failure. To elucidate the dynamic nature of respiratory modulation of sympathetic activity in patients with heart failure, we studied within-breath variation of muscle sympathetic nerve activity (MSNA) under various ventilatory volumes. METHODS AND RESULTS MSNA, blood pressure, and resp...
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ژورنال
عنوان ژورنال: Journal of Clinical Endocrinology & Metabolism
سال: 1998
ISSN: 0021-972X
DOI: 10.1210/jc.83.11.3977