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Reflex bradycardia is a bradycardia (decrease in heart rate) in response to the baroreceptor reflex, one of the body's homeostatic mechanisms for preventing abnormal increases in blood pressure. In the presence of high mean arterial pressure , the baroreceptor reflex produces a reflex bradycardia as a method of decreasing blood pressure by ...
This combined with hypertension is the first stage of the Cushing reflex. [citation needed] Meanwhile, baroreceptors in the aortic arch detect the increase in blood pressure and trigger a parasympathetic response via the vagus nerve. This induces bradycardia, or slowed heart rate, and signifies the second stage of the reflex. [18]
This can result in bradycardia, tachycardia, vasodilation, flushing, pupillary constriction and nasal stuffiness above the spinal lesion. Piloerection and pale, cool skin occur below the lesion due to the prevailing sympathetic outflow. [10] The most common causes include bladder or bowel over-distension from urinary retention and fecal ...
When a medical condition or medication causes high blood pressure, it’s known as secondary hypertension. Secondary hypertension can be caused by: Sleep apnea. Pregnancy or preeclampsia.
A high pulse pressure combined with bradycardia and an irregular breathing pattern is associated with increased intracranial pressure, a condition called Cushing's triad seen in people after head trauma with increased intracranial pressure. [16] Common causes of widening pulse pressure include: [3] [medical citation needed] Anemia; Aortic ...
Bradycardia, also called bradyarrhythmia, is a resting heart rate under 60 beats per minute (BPM). [1] While bradycardia can result from various pathologic processes, it is commonly a physiologic response to cardiovascular conditioning or due to asymptomatic type 1 atrioventricular block.
It can have many potential causes, including genetics, lifestyle habits, and underlying health issues. Some types of cardiovascular disease, such as some cardiomyopathies, develop due to factors ...
Intracranial hypertension (IH), also called increased ICP (IICP) or raised intracranial pressure (RICP), refers to elevated pressure in the cranium. 20–25 mmHg is the upper limit of normal at which treatment is necessary, though it is common to use 15 mmHg as the threshold for beginning treatment.
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