نتایج جستجو برای: sympathetic system
تعداد نتایج: 2250006 فیلتر نتایج به سال:
BACKGROUND Exposure to particulate matter≤2.5 μm in diameter (PM2.5) increases blood pressure (BP) in humans and animal models. Abnormal activation of the sympathetic nervous system may have a role in the acute BP response to PM2.5 exposure. The mechanisms responsible for sympathetic nervous system activation and its role in chronic sustenance of hypertension in response to PM2.5 exposure are c...
When ventricular pacemakers are electrically stimulated at a fast rate, the cessation of the drive is followed by a temporary suppression of automaticity ("overdrive suppression"). The role of the sympathetic system in the regulation of this overdrive suppression was studied and the following results obtained: 1) Hypotension induced during overdrive by amyl nitrite inhalation caused a shortenin...
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