baroreflex การใช้

• Thus HRV biofeedback exercises the baroreflex, and strengthens it.
• When blood pressure goes up, the baroreflex makes heart rate go down.
• Some biological systems exhibit negative feedback such as the baroreflex in blood pressure regulation and erythropoiesis.
• Baroreflex and autonomic pathways normally ensure that blood pressure is maintained despite various stimuli including postural change.
• The findings support earlier observations that weightlessness results in a decrease of MSNA activity through a baroreflex mechanism.
• The most direct effect of HRV biofeedback is on the baroreflex, a homeostatic reflex that helps control blood pressure fluctuations.
• The hot water immersion test ( HIT ) is equally capable of triggering a pain response without the confounding of baroreflex activation.
• Due to the baroreflex, this causes vasodilation, or widening of the brain's blood vessels intended to relieve high pressure.
• Baroreflex induced changes in blood pressure are mediated by both branches of the autonomic nervous system  that is the parasympathetic and sympathetic nerves.
• The initial study using the technique, published in 1982, found that decreased baroreflex sensitivity was associated with increased risk for ventricular fibrillation.
• Thus, for example, nicotinic receptor antagonists interfere with the baroreflex that normally corrects changes in blood pressure by sympathetic and parasympathetic stimulation of the heart.
• It is widely accepted that the Cushing reflex acts as a baroreflex, or homeostatic mechanism for the maintenance of blood pressure, in the cranial region.
• Patients on prazosin should be told to rise to stand up slowly, since their poor baroreflex may cause them to faint if their blood pressure is not adequately maintained during standing.
• Because the baroreflex is controlled through brain stem mechanisms that communicate directly with the insula and amygdala, which control emotion, HRV biofeedback also appears to modulate emotional reactivity, and to help people suffering from anxiety, stress, and depression
• During HRV biofeedback, these two reflexes stimulate each other, stimulating resonance properties of the cardiovascular system caused by the inherent rhythm in the baroreflex, and thus causing very big oscillations in heart rate and large-amplitude stimulation of the baroreflex.
• During HRV biofeedback, these two reflexes stimulate each other, stimulating resonance properties of the cardiovascular system caused by the inherent rhythm in the baroreflex, and thus causing very big oscillations in heart rate and large-amplitude stimulation of the baroreflex.
• Thoracic sympathectomy will change many bodily functions, including sweating, heart rate, thyroid, baroreflex, lung volume, pupil dilation, skin temperature and other aspects of the autonomic nervous system, like the essential fight-or-flight response.
• Because it takes about 5 seconds for blood pressure to change after changes in heart rate ( think of different amounts of blood flowing through the same sized tube ), the baroreflex produces a rhythm in heart rate with a period of about 10 seconds.
• Billman's model of SCD has also shown that sudden death is not a direct function of the degree of a myocardial infarction and that baroreflex gain declines during MI . Resistant dogs show a reduced heart rate during ischemia, while susceptible dogs show increased heart rate ( beyond that induced by the exercise ).