systemic vascular resistance


Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Encyclopedia.

sys·tem·ic vas·cu·lar re·sis·tance

an index of arteriolar compliance or constriction throughout the body; proportional to the blood pressure divided by the cardiac output.

systemic vascular resistance (SVR)

the resistance the left ventricle must overcome to pump blood through the systemic circulation. As peripheral blood vessels constrict, the SVR increases.

sys·tem·ic vas·cu·lar re·sis·tance

(sis-tem'ik vas'kyū-lăr rĕ-zis'tăns)
An index of arteriolar compliance or constriction throughout the body; equal to the blood pressure divided by the cardiac output.

systemic vascular resistance

Abbreviation: SVR
The resistance to the flow of blood through the body's blood vessels. It increases as vessels constrict (as when a drug like norepinephrine is given) and decreases when vessels dilate (as in septic shock). Any change in the diameter, elasticity, or number of vessels recruited can influence the measured amount of resistance to the flow of blood through the body.
See also: resistance
References in periodicals archive ?
Hemodynamic comparison of mild and severe preeclampsia: Concept of stroke systemic vascular resistance index.
Systemic vascular resistance index determined by thoracic electrical bioimpedance predicts the risk for maternal hypotension during regional anesthesia for cesarean delivery.
Peripartum change in systemic vascular resistance can result in pulmonary edema in the presence of mitral regurgitation.
The sudden changes in systemic vascular resistance should be added to the differential diagnosis when pulmonary edema occurs after delivery in patients with mitral regurgitation.
Baseline parameters (T1 of Table 2 and Table 3) of heart rate, systemic arterial pressure, pulmonary arterial pressure, PCWP, systemic vascular resistance index, PVRI, cardiac index, LVSWI, and RVSWI between the two groups were statistically insignificant.
The preservation of cardiac index may be attributed to the concurrent reduction in systemic vascular resistance.
MAP: mean arterial pressure, RAP: right atrial pressure, SVRI: systemic vascular resistance index, PRSW: preload recruitable stroke work, EDPVR: end diastolic pressure volume relationship, P: the RM-ANOVA statistic comparing differences between baseline variables.
Concurrently, systemic vascular resistance fell by 40% (from 2823 to 1698 dyn.
This is consistent with previous fi ndings that PiCCO requires recalibration after marked changes in the systemic vascular resistance (8).
cardiac output, arterial compliance, systemic vascular resistance, and ventricular contractility) and transmit the data through a secured Internet site to their doctors' desktops for evaluation of current treatment and medication effects.
Heart Failure: During baseline-controlled clinical trials, in patients receiving digitalis and diuretics, single doses of PRINIVIL resulted in decreases in pulmonary capillary wedge pressure, systemic vascular resistance and blood pressure accompanied by an increase in cardiac output and no change in heart rate.
The ability to monitor hemodynamic indices such as cardiac output, ejection fraction, contractility, end diastolic volume, and systemic vascular resistance offer the physician a quick, efficient, real-time status report of cardiac function at approximately one-tenth the cost of more dangerous procedures.