systemic vascular resistance การใช้

• Next consider if both systemic vascular resistance and central venous pressure remain constant.
• Conditions associated with low cardiac output and high systemic vascular resistance can produce a dicrotic pulse.
• The decrease in cardiac output occurs in conjunction with a decrease in systemic vascular resistance, which results in hypotension.
• Catecholamines will also cause peripheral vasoconstriction, which causes increased systemic vascular resistance and ensures that organs are adequately perfused.
• Failure of normal autoregulation and an abrupt rise in systemic vascular resistance are typical initial components of the disease process.
• Propofol can also cause decreased systemic vascular resistance, myocardial blood flow, and oxygen consumption, possibly through direct vasodilation.
• By increasing systemic vascular resistance, these drugs reduce shunting and improve renal perfusion, prolonging survival until definitive treatment with liver transplant.
• The net effect of these peptides is a decrease in blood pressure due to the decrease in systemic vascular resistance and, thus, afterload.
• Cytokines released in a large scale inflammatory response result in massive vasodilation, increased capillary permeability, decreased systemic vascular resistance, and low blood pressure.
• By synchronizing fluid volume changes with the heartbeat, the change in impedance can be used to calculate stroke volume, cardiac output and systemic vascular resistance.
• As the left ventricle becomes unable to compensate for an acute rise in systemic vascular resistance, left ventricular failure and pulmonary edema or myocardial ischemia may occur.
• The physiologic actions of BNP are similar to those of ANP and include decrease in systemic vascular resistance and central venous pressure as well as an increase in natriuresis.
• In short-term, acute situations, labetalol decreases blood pressure by decreasing systemic vascular resistance with little effect on stroke volume, heart rate and cardiac output.
• The nucleus tractus solitarii in the medulla oblongata of the brain recognizes changes in the firing rate of action potentials from the baroreceptors, and influences cardiac output and systemic vascular resistance.
• The PulseCO algorithm has been unchanged since 2001 and has been proven to accurately track cardia output after changes in inotropes and administration of vasopressors / vasodilators that alter systemic vascular resistance.
• Moreover, conditions associated with low systemic vascular resistance and a compliant aorta ( e . g . sepsis ) can also produce a dicrotic pulse, although the mechanism is not entirely understood.
• In "'systemic vascular resistance ( SVR ) triggered primarily by a massive release of histamine by mast cells activated by antigen-bound immunoglobulin E and also by increased production and release of prostaglandins.
• The combination of heart output ( cardiac output ) and systemic vascular resistance, which refers to the collective resistance of all of the body's arterioles, are the principal determinants of arterial blood pressure at any given moment.
• Therefore, one could just as well say that venous return is determined by the mean aortic pressure minus the mean right atrial pressure, divided by the resistance of the entire systemic circulation ( i . e ., the systemic vascular resistance ).
• In addition to symptoms related to the provoking cause, sepsis frequently is associated with either fever, low blood pressure due to decreased systemic vascular resistance, higher cardiac output, and dysfunctions of blood coagulation ( where clotting may lead to organ failure ).