کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7278657 1473869 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sense of impending doom: Inhibitory activity in waiting blood donors who subsequently experience vasovagal symptoms
ترجمه فارسی عنوان
حس عذاب قریب الوقوع: فعالیت مهاری در اهداکنندگان منتظر خون که پس از آن علائم وازوواگال را تجربه می کنند
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی
This study examined autonomic and hemodynamic processes associated with the development of naturally occurring vasovagal responses. Data from a study assessing the physiological correlates of an intervention to reduce vasovagal responses in blood donors were examined (Ditto et al., 2009). Ninety-eight participants were assigned randomly to groups that either practiced applied tension or not. Dependent variables included ratings of vasovagal symptoms, heart rate, blood pressure, and other parameters derived from ambulatory impedance cardiography. Participants who subsequently experienced vasovagal symptoms had a lower ratio between low and high frequency components (LF/HF HRV) of heart rate variability (HRV) before blood donation, suggesting lower sympathetic nervous system activity. They also showed sharper decreases in total peripheral resistance and lower respiration rates. The results suggest that vasovagal reactions that begin during anticipation of a medical procedure may be characterized by an inhibitory process from the outset and do not support the belief that reactions follow a diphasic pattern.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Psychology - Volume 104, January 2015, Pages 28-34
نویسندگان
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