Hysteresis in Atrial Refractoriness in the Conscious Dog: Influence of Stimulation Parameters and Control by the Autonomic Nervous System

Objective: To examine the association between migraine and syncope-related autonomic nervous system (ANS) symptoms.Methods: A population-based study among migraineurs with and without aura (n = 323) and control subjects (n = 153) was conducted. A systematic questionnaire and cardiovascular measurements during rest, while standing, and after venipuncture addressed the prevalence of syncope, orthostatic intolerance, orthostatic hypotension (OH), and the postural tachycardia syndrome (POTS) in migraineurs and control subjects.Results: The lifetime prevalence of syncope in all participants was 41%, more often in women (45 vs 32%; p = 0.02). Compared with control subjects, migraineurs had a higher lifetime prevalence of syncope (46 vs 31%; p = 0.001), frequent syncope (five or more attacks) (13 vs 5%; p = 0.02), and orthostatic intolerance (32 vs 12%; p < 0.001). There was no association between ANS symptoms and the severity of migraine or migraine subtype. Cardiovascular measurements and the prevalence of POTS and OH did not differ significantly between migraineurs and control subjects.Conclusion: This population-based study demonstrated an elevated prevalence of syncope and orthostatic intolerance in migraineurs without clear interictal signs of autonomic nervous system dysfunction.

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Chronotropic cardiac effects of histamine in the conscious dog with chronic atrioventricular block: interactions with the autonomic nervous system

Agents and Actions ◽

10.1007/bf01966199 ◽

1986 ◽

Vol 19 (3-4) ◽

pp. 150-157 ◽

Cited By ~ 6

Author(s):

J. H. Li ◽

M. Boucher ◽

P. Duchene-Marullaz

Keyword(s):

Nervous System ◽

Autonomic Nervous System ◽

Atrioventricular Block ◽

Cardiac Effects ◽

Conscious Dog ◽

Autonomic Nervous

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Does the autonomic nervous system play a role in the development of insulin resistance? A study on heart rate variability in first-degree relatives of Type 2 diabetes patients and control subjects

Diabetic Medicine ◽

10.1046/j.1464-5491.2003.00920.x ◽

2003 ◽

Vol 20 (5) ◽

pp. 399-405 ◽

Cited By ~ 68

Author(s):

S. Lindmark ◽

U. Wiklund ◽

P. Bjerle ◽

J. W. Eriksson

Keyword(s):

Insulin Resistance ◽

Type 2 Diabetes ◽

Heart Rate ◽

Heart Rate Variability ◽

Nervous System ◽

Autonomic Nervous System ◽

Autonomic Nervous ◽

Control Subjects ◽

And Control

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Effects of Meditation on Mental Health and Cardiovascular Balance in Caregivers

10.20944/preprints202012.0035.v1 ◽

2020 ◽

Author(s):

Lourdes Díaz-Rodríguez ◽

Keyla Vargas-Román ◽

Juan Carlos Sanchez-Garcia ◽

Raquel Rodríguez-Blanque ◽

Guillermo Arturo Cañadas- De la Fuente ◽

...

Keyword(s):

Mental Health ◽

Nervous System ◽

Autonomic Nervous System ◽

Repeated Measures ◽

Controlled Clinical Trial ◽

Loved One ◽

Autonomic Nervous ◽

Significant Amelioration ◽

Vagal Nerve Activity ◽

And Control

Background: Caring for a loved one can be rewarding but also associated with substantial caregiver burden, developing mental outcomes and affecting happiness. Eventually, these physical and psychological disorders can lead to an imbalance of the autonomic nervous system. Meditation has been found to offer multiple benefits to relieve these disorders and reduce the risk of cardiovascular disease. The aim of this study was to determine the effects of a four-week 16-hour presential meditation program on physiological and psychological parameters and vagal nerve activity in high-burden caregivers, comparing the results with those not receiving this program. Methods: A non-randomized repeated-measures controlled clinical trial was conducted, dividing participants between intervention and control groups by convenience allocation because random assignment was ethically inappropriate. Results: After the meditation program, the experimental group showed a significant reduction in anxiety levels (F= 24.92, p<0.001), a non-significant amelioration of depression levels (F= 1.75, p=0.19), and significantly improved heart rate variability (F= 8.40, p<0.05) and SDNN (F=15.59, p<0.05). Conclusions: Meditation can be a useful therapy to enhance the mental health and autonomic nervous system balance of informal caregivers, improving symptoms of physical and mental overload.

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