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Diphenhydramine, sold under the brand name Benadryl among others, is an antihistamine and sedative.It is a first-generation H 1-antihistamine and it works by blocking certain effects of histamine, which produces its antihistamine and sedative effects.
[4] [5] [2] Symptoms in mild cases include high blood pressure and a fast heart rate; usually without a fever. [2] Symptoms in moderate cases include high body temperature, agitation, increased reflexes, tremor, sweating, dilated pupils, and diarrhea. [1] [2] In severe cases, body temperature can increase to greater than 41.1 °C (106.0 °F). [2]
The narrowing of blood vessels leads to an increase in peripheral resistance, thereby elevating blood pressure. While vasoconstriction is a normal and essential regulatory mechanism for maintaining blood pressure and redistributing blood flow during various physiological processes, its dysregulation can contribute to pathological conditions.
A link between these types of drugs and cognitive impairment isn't a totally new discovery, but for the first time, researchers used brain imaging techniques to determine the physical changes ...
Brain ischemia has been linked to a variety of diseases or abnormalities. Individuals with sickle cell anemia, compressed blood vessels, ventricular tachycardia, plaque buildup in the arteries, blood clots, extremely low blood pressure as a result of heart attack, and congenital heart defects have a higher predisposition to brain ischemia in comparison to the average population.
Sleeping and waking up at different times is associated with an increased risk of heart attack and stroke, even for people who get the recommended amount of sleep, according to new research.
Is anger linked to heart attacks? New research finds that a bout of anger impairs blood vessel function which can raise the risk of atherosclerosis, which in turn raises heart disease risk.
A reduction in stroke volume is the decline in the volume of blood the heart is circulating, reducing the heart’s cardiac output. [6] The stroke volume is reduced due to loss of fluids in the body, reducing the volume of blood in the body. [7] This leads the increase in heart rate to compensate for the reduced cardiac output during exercise. [6]