17 March 2003
Baroreflex function in vasodepressive syncope: Detection of early impairment.
Franco Franchi, Chiara Lazzeri, Salvatore M. Romano, Anna Toso, Marco Chiostri, Marco Foschi, Massimo Pistolesi, Marisa Di DonatoMed Sci Monit 2003; 9(3): CR125-130 :: ID: 4729
Abstract
BACKGROUND: Defective baroreflex function has been suggested as a potential mechanism accounting for the development of syncopal episodes. The present study was therefore aimed at assessing the non-invasive, indirect hemodynamic profile and baroreflex function by means of tilting, which is a natural stimulation crucial to physiological baroreflex activity, in syncopal patients and healthy controls. MATERIAL/METHODS: Seventeen consecutive patients with a positive response to head-up tilting and fourteen healthy subjects as controls underwent continuous and non-invasive beat-to-beat heart rate and arterial pressure measurements in order to evaluate systolic, diastolic, and dicrotic pressures, as well as heart rate. Baroreflex function was calculated as the slope of the linear regression line relating systolic arterial pressure to RR interval changes during upward and downward phases of tilting, respectively. RESULTS: When compared to healthy subjects, vasodepressive patients showed a significantly weaker correlation between systolic pressure and RR interval changes both in upward tilting, (r = 0.68 vs r = 0.91, p<0.05) and downward tilting (r = 0.48 vs r = 0.93, p<0.01). CONCLUSIONS: Our results show that an impairment in baroreflex-mediated adjustment to postural challenge can be detected in syncopal patients also during upward tilting, that is, in the early phase of the test. Moreover, our investigation emphases the utility of a noninvasive, complete hemodynamic evaluation of the early phase of tilting in order to detect peculiar behaviours of pulse wave contour and related parameters.
Keywords: Syncope, Vasovagal - etiology, Syncope, Vasovagal - physiopathology
Editorial
01 May 2022 : Editorial
Editorial: Cardiovascular Complications at One Year After SARS-CoV-2 Infection are Independent of Underlying Cardiovascular Risk Factors or Severity of COVID-19DOI: 10.12659/MSM.937048
Med Sci Monit 2022; 28:e937048
SARS-CoV-2/COVID-19
04 May 2022 : Clinical Research
Effects of Wearing Face Masks on Exercise Capacity and Ventilatory Anaerobic Threshold in Healthy Subjects ...Med Sci Monit In Press; DOI: 10.12659/MSM.936069
22 April 2022 : Clinical Research
Factors Associated with Falls During Hospitalization for Coronavirus Disease 2019 (COVID-19)Med Sci Monit In Press; DOI: 10.12659/MSM.936547
27 April 2022 : Meta-Analysis
Effect of the COVID-19 Pandemic on Serum Vitamin D Levels in People Under Age 18 Years: A Systematic Review...Med Sci Monit In Press; DOI: 10.12659/MSM.935823
06 May 2022 : Clinical Research
COVID-19: Another Cause of Dental Anxiety?Med Sci Monit 2022; 28:e936535
In Press
19 May 2022 : Clinical Research
Association Between Serum Homocysteine Levels and Severity of Diabetic Kidney Disease in 489 Patients with ...Med Sci Monit In Press; DOI: 10.12659/MSM.936323
18 May 2022 : Clinical Research
Physical and Psychosocial Concept Domains Related to Health-Related Quality of Life (HRQL) in 50 Girls and ...Med Sci Monit In Press; DOI: 10.12659/MSM.936801
18 May 2022 : Clinical Research
Association Between Variants of the Mannose-Binding Lectin 2 Gene and Susceptibility to Sepsis in the Haina...Med Sci Monit In Press; DOI: 10.12659/MSM.936134
17 May 2022 : Clinical Research
Clinical Application of C-TIRADS Category and Contrast-Enhanced Ultrasound in Differential Diagnosis of Sol...Med Sci Monit In Press; DOI: 10.12659/MSM.936368
Most Viewed Current Articles
30 Dec 2021 : Clinical Research
Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...DOI :10.12659/MSM.935379
Med Sci Monit 2021; 27:e935379
08 Mar 2022 : Review article
A Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...DOI :10.12659/MSM.936292
Med Sci Monit 2022; 28:e936292
01 Nov 2020 : Review article
Long-Term Respiratory and Neurological Sequelae of COVID-19DOI :10.12659/MSM.928996
Med Sci Monit 2020; 26:e928996
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952