Search results
Results From The WOW.Com Content Network
Ambient temperature is an example of exogenous vasoconstriction. Cutaneous vasoconstriction will occur because of the body's exposure to the severe cold. Examples of endogenous factors include the autonomic nervous system, circulating hormones, and intrinsic mechanisms inherent to the vasculature itself (also referred to as the myogenic response).
The initial treatment aiming at restoring effective blood pressure in patients that have refractory shock typically starts with introducing norepinephrine and dopamine. [24] Vasopressin comes as the second-line agent. [24] However, high-dose therapy is linked to excessive coronary, splanchnic vasoconstriction, and hypercoagulation. [6]
Hemostasis can be achieved in various other ways if the body cannot do it naturally (or needs help) during surgery or medical treatment. When the body is under shock and stress, hemostasis is harder to achieve. Though natural hemostasis is most desired, having other means of achieving this is vital for survival in many emergency settings.
The standard drug treatment of dexamethasone does not alter the hypoxia or the consequent vasoconstriction, but stimulates fluid reabsorption in the lungs to reverse the edema. Additionally, several studies on native populations remaining at high altitudes have demonstrated to varying degrees the blunting of the HPV response.
Septic shock, especially septic shock where treatment is delayed or the antimicrobial drugs are ineffective, however has a mortality rate between 30% and 80%; cardiogenic shock has a mortality rate of up to 70% to 90%, though quick treatment with vasopressors and inotropic drugs, cardiac surgery, and the use of assistive devices can lower the ...
Various vasoactive agents, such as prostanoids, phosphodiesterase inhibitors, and endothelin antagonists, are approved for the treatment of pulmonary arterial hypertension. The use of vasoactive agents for patients with pulmonary hypertension may cause harm and unnecessary expense to persons with left heart disease or hypoxemic types of lung ...
The treatment of cerebral edema depends on the cause and includes monitoring of the person's airway and intracranial pressure, proper positioning, controlled hyperventilation, medications, fluid management, steroids. [3] [7] [8] Extensive cerebral edema can also be treated surgically with a decompressive craniectomy. [7]
Peripheral Vasoconstriction: Blood vessels in the extremities constrict, reducing blood flow to the limbs. This shunting of blood helps to redirect it to essential organs, such as the heart and brain , preserving oxygen for vital functions .