Basic Autonomic Tests

Hohnloser, Stefan H.; Klingenheben, Thomas

doi:10.1007/978-94-017-1057-2_3

Cited by 16 publications

(14 citation statements)

References 29 publications

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“…As already discussed, particularly sensitive assessments of disturbed autonomic responsiveness utilise HRV responses to provocative tests leading, under normal circumstances, to known autonomic balance changes. Not only tilt testing and other instrumental interventions (Hohnloser & Klingeheben, ), but also postural provocations have been employed in different clinical settings (Jiang et al . ).…”

Section: Autonomic Control Of Heart Ratementioning

confidence: 99%

CrossTalk proposal: Heart rate variability is a valid measure of cardiac autonomic responsiveness

Malík

Hnatkova

Huikuri

et al. 2019

The Journal of Physiology

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Section: Autonomic Control Of Heart Ratementioning

confidence: 99%

CrossTalk proposal: Heart rate variability is a valid measure of cardiac autonomic responsiveness

Malík

Hnatkova

Huikuri

et al. 2019

The Journal of Physiology

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“…In the subsequent 10 s (delta 10-20 s of the maneuver), a supplementary increase in HR likely resulted from arteriolar sympathetic activation, which also modulates heart functions 2,6 .…”

Section: Discussionmentioning

confidence: 99%

“…The registered HR response pattern enabled us to infer its normality, as HR increased during the entire maneuver (Figures 2 and 3), and was followed by bradycardia, produced by subsequent vagal activation 6,9,15 .…”

Section: Discussionmentioning

confidence: 99%

Proposal Intensity Adequacy of Expiratory Effort and Heart Rate Behavior During the Valsalva Maneuver in Preadolescents

Paschoal¹,

Donato²,

Neves³

2014

Arquivos Brasileiros De Cardiologia

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Background When performing the Valsalva maneuver (VM), adults and preadolescents produce the same expiratory resistance values. Objective To analyze heart rate (HR) in preadolescents performing VM, and propose a new method for selecting expiratory resistance. Method The maximal expiratory pressure (MEP) was measured in 45 sedentary children aged 9-12 years who subsequently performed VM for 20 s using an expiratory pressure of 60%, 70%, or 80% of MEP. HR was measured before, during, and after VM. These procedures were repeated 30 days later, and the data collected in the sessions (E1, E2) were analyzed and compared in periods before, during (0-10 and 10-20 s), and after VM using nonparametric tests. Results All 45 participants adequately performed VM in E1 and E2 at 60% of MEP. However, only 38 (84.4%) and 25 (55.5%) of the participants performed the maneuver at 70% and 80% of MEP, respectively. The HR delta measured during 0-10 s and 10-20 s significantly increased as the expiratory effort increased, indicating an effective cardiac autonomic response during VM. However, our findings suggest the VM should not be performed at these intensities. Conclusion HR increased with all effort intensities tested during VM. However, 60% of MEP was the only level of expiratory resistance that all participants could use to perform VM. Therefore, 60% of MEP may be the optimal expiratory resistance that should be used in clinical practice.

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“…Since then, that maneuver began to be used as a non-invasive autonomic cardiac function test, being standardized as an expiratory effort equivalent to 40 cmH 2 O, maintained for 15 to 20 seconds. 3 That test usually assesses heart rate (HR) and systemic blood pressure (BP) behavior in response to a stimulus that sensitizes baroreceptors, chemoreceptors and cardiopulmonary receptors, through overload of the cardiovascular system caused by the Valsalva maneuver. 4…”

Section: Introductionmentioning

confidence: 99%

Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents

Paschoal

Tamaki

et al. 2016

Arquivos Brasileiros De Cardiologia

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BackgroundRecent studies have shown changes in cardiac autonomic control of obese preadolescents.ObjectiveTo assess the heart rate responses and cardiac autonomic modulation of obese preadolescents during constant expiratory effort.MethodsThis study assessed 10 obese and 10 non-obese preadolescents aged 9 to 12 years. The body mass index of the obese group was between the 95th and 97th percentiles of the CDC National Center for Health Statistics growth charts, while that of the non-obese group, between the 5th and 85th percentiles. Initially, they underwent anthropometric and clinical assessment, and their maximum expiratory pressures were obtained. Then, the preadolescents underwent a constant expiratory effort of 70% of their maximum expiratory pressure for 20 seconds, with heart rate measurement 5 minutes before, during and 5 minutes after it. Heart rate variability (HRV) and heart rate values were analyzed by use of a software.ResultsThe HRV did not differ when compared before and after the constant expiratory effort intra- and intergroup. The heart rate values differed (p < 0.05) during the effort, being the total variation in non-obese preadolescents of 18.5 ± 1.5 bpm, and in obese, of 12.2 ± 1.3 bpm.ConclusionThe cardiac autonomic modulation did not differ between the groups when comparing before and after the constant expiratory effort. However, the obese group showed lower cardiovascular response to baroreceptor stimuli during the effort, suggesting lower autonomic baroreflex sensitivity.

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Basic Autonomic Tests

Cited by 16 publications

References 29 publications

CrossTalk proposal: Heart rate variability is a valid measure of cardiac autonomic responsiveness

CrossTalk proposal: Heart rate variability is a valid measure of cardiac autonomic responsiveness

Proposal Intensity Adequacy of Expiratory Effort and Heart Rate Behavior During the Valsalva Maneuver in Preadolescents

Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents

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