Intérêt de la variabilité sinusale dans la syncope vasovagale

Salameh, Eva-Kristina; Kadri, Zena; Neemtallah, R.; Azar, Rabih R.; Badaoui, Georges; Jaoude, Simon Abou; Kassab, Roland

doi:10.1016/j.ancard.2007.01.004

Cited by 6 publications

(1 citation statement)

References 25 publications

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“…These act as physiological biomarkers to explore the influence of the autonomic nervous system on sinus node function, particularly the vagal control of the heart [ 11 - 13 ]. However, the findings of a few researchers were contradictory to the present findings [ 14 ]. There was no statistically significant difference in the mean value of systolic and diastolic blood pressure between the cases and the controls.…”

Section: Discussioncontrasting

confidence: 99%

Heart Rate Variability in Unexplained Syncope Patients Versus Healthy Controls: A Comparative Study

Dash¹,

Samanta²,

Das³

et al. 2023

Cureus

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Background Syncope or fainting is the sudden and transient loss of consciousness. This could lead to an increase in mortality due to sudden cardiac death or comorbidity in these patients. Heart rate variability (HRV) is a noninvasive bedside procedure for assessing the cardiovascular autonomic function. There may be an abnormal alteration in the HRV parameters in syncope patients. This can be used for looking into cardiovascular autonomic changes in syncope. This would help in early diagnosis and intervention. Objective The aim of this present study was to compare the HRV parameters between unexplained syncope patients and age-matched healthy controls and to find a correlation between HRV parameters and cardiovascular parameters like pulse and mean blood pressure. Materials and methods A five-minute continuous electrocardiogram (ECG) was recorded and HRV analysis was done by ADInstruments' PowerLab (Oxford, United Kingdom) for 25 cases and 25 controls. Results The mean standard deviation of the RR interval (SDRR) in milliseconds was found to be significantly lower in the cases (21.93 ± 3.53) as compared to controls (71.27 ± 27.40). The mean value of the low-frequency to high-frequency ratio (LF/HF) was significantly higher in cases (1.43 ± 0.40) as compared to controls (0.98 ± 1.07). However, there was no significant correlation between the pulse, blood pressure, and HRV measures. Conclusion The findings suggest a sympathetic predominance in the cases of unexplained syncope as compared to the controls.

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Section: Discussioncontrasting

confidence: 99%

Heart Rate Variability in Unexplained Syncope Patients Versus Healthy Controls: A Comparative Study

Dash¹,

Samanta²,

Das³

et al. 2023

Cureus

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The complexity of hemodynamic response to the tilt test with and without nitroglycerine provocation in patients with vasovagal syncope

Buszko

Piątkowska

Koźluk

et al. 2018

Sci Rep

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The paper presents a comparison of vasovagal syndrome occurrence in a head up tilt table test between patients with a positive result of passive tilt test and those with a positive result after pharmacological provocation. The study group consisted of 80 patients: 57 patients who experienced syncope in the passive phase of the test (43 women (aged: 35.6 ± 16.2) and 14 men (aged: 41.7 ± 15.6) and 23 patients who experienced syncope after pharmacological provocation (17 women (age: 32.3 ± 12) and 6 men (age: 43 ± 15). The main investigation was based on the assessment of monitored signals complexity: heart rate, blood pressure and stroke volume. The analysis of complexity in chosen measurement phases was performed with Sample Entropy. The investigation showed that the reactions of autonomic nervous system during tilt test and before syncope are similar for positive result of passive tilt test and positive result of tilt test with provocation. The differences in supine position occurred only in analysis based on impedance measurement (SV: p = 0.01). Significant differences were denoted for all signals just before the syncope (RRI, sBP, dBP: p = 0,00001 and SV: p = 0.01). In analysis of signals complexity the significant differences occurred just before the syncope for Sample Entropy of blood pressure (SampEn (sBP): p = 0.0008, SampEn (dBP): p = 0,0001).

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Parameters of Heart Rate Variability Can Predict Prolonged Asystole before Head‐Up Tilt Table Test

Gursul

Bayata

Tülüce

et al. 2014

Noninvasive Electrocardiol

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Intérêt de la variabilité sinusale dans la syncope vasovagale

Cited by 6 publications

References 25 publications

Heart Rate Variability in Unexplained Syncope Patients Versus Healthy Controls: A Comparative Study

Heart Rate Variability in Unexplained Syncope Patients Versus Healthy Controls: A Comparative Study

The complexity of hemodynamic response to the tilt test with and without nitroglycerine provocation in patients with vasovagal syncope

Parameters of Heart Rate Variability Can Predict Prolonged Asystole before Head‐Up Tilt Table Test

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