Real viagra without prescription for Sale 74%
Approved sildenafil pharmacy
In a healthy state of the human body, the regulation of blood circulation in the brain works according to the following principle. when blood pressure rises, there is an increase in the tone of the cerebral arteries, which helps to avoid excessive blood flow to the brain. If this mechanism is violated, then the manifestation of a tonic reaction of the arteries of the brain in an excessive or insufficient form is possible.
Classification of hypertensive cerebral crisis Pathogenesis of hypertensive cerebral crisis Symptoms of hypertensive cerebral crisis Diagnosis of hypertensive cerebral crisis Treatment of hypertensive cerebral crisis Prevention of hypertensive cerebral crisis. Pathogenesis of hypertensive cerebral crisis. In a healthy state of the human body, the regulation of blood circulation in the brain works according to the following principle.
Order viagra cheap
when blood pressure rises, there is an increase in the tone of the cerebral arteries, which helps to buy viagra online excessive blood flow to the brain. If this mechanism is violated, then the manifestation of a tonic reaction of the arteries of the brain in an excessive or insufficient form is possible. If the tonic reaction of the cerebral vessels in the event of an increase in blood pressure is insufficient, a blood breakthrough into the vessels of the brain is possible.
However, even here the protective reaction of the body is activated in the form of a second compensatory mechanism, which should increase the tone of the venous vessels. When working properly, this mechanism accelerates the outflow of excess blood from the cranial cavity.
If, in response to a jump in blood pressure, the tone of the arteries also increases, then this can lead to disruptions in the blood supply to the brain tissues with the further development of oxygen starvation (hypoxia), which will entail an ischemic type of hypertensive cerebral crisis. First of all, the cerebral cortex will suffer, so as it is most sensitive to hypoxia. The uneven structure of the cerebral vessels leads to order sildenafil pills, which affects the occurrence of foci with pronounced ischemia.
In the pathogenesis of a complex type of hypertensive cerebral crisis, there is a tendency to hypotension of cerebral vessels with a further process of deposition of venous blood. Ischemia of different parts of the brain can also be observed, and the reason for this is the deterioration of blood flow in the capillaries, which is the result of the ejection of viagra pills from the arteries into the veins, while bypassing the capillary network. Normally, the system of regulation of cerebral circulation works in such a way that with an increase in systemic blood pressure, an increase in the tone of the cerebral arteries occurs, which makes it possible to avoid excess blood entering the cerebral vessels. Disruption of viagra mechanism may be manifested by an insufficient or excessive tonic response of the cerebral arteries.