L Cloarec-Blanchard

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1. Changes in the low-frequency (LF) components of blood pressure and heart rate variability and in the ratio of LF to high-frequency (HF) components of heart rate variability (LF/HF ratio) are used to assess acute changes in sympathetic control of blood pressure or heart rate and in sympathovagal balance that occur in response to physiological or(More)
BACKGROUND Although systolic and diastolic blood pressure and cardiovascular risk are directly related in epidemiologic studies, the results of large therapeutic trials in mild to moderate hypertension have indicated that the prevention of cerebrovascular accidents was much more effective than that of coronary ischemic accidents. Actually, a significant(More)
Short-term fluctuations in blood pressure (BP) and heart rate (HR) were quantified to assess autonomic nervous system (ANS) dysfunction in six dialysis patients, compared to six control subjects of similar age. Indirect finger BP was measured by a Finapres device. Analog-to-digital conversion of the BP was used to determine systolic BP (SBP), diastolic BP(More)
Even at rest, blood pressure and heart fluctuate continuously around their mean values. Considerable interest has recently focused on the assessment of spontaneous in fluctuations in heart rate and blood pressure, i.e., heart rate and blood pressure variability, using time or frequency domain indexes. Heart rate variability has been extensively studied in(More)
Nitrate tolerance is characterized by a loss of nitroglycerin (NTG) vasodilating and hypotensive effects during continuous administration, but is difficult to detect clinically. We hypothesized that the decrease in arterial blood pressure (BP) and the reflex sympathetic activation and tachycardia due to baroreflex deactivation associated with rapid(More)
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