systole


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Related to systole: systolic pressure, Ventricular systole

systole

 [sis´to-le]
the contraction, or period of contraction, of the heart, especially of the ventricles, during which blood is forced into the aorta and pulmonary artery. adj., adj systol´ic.
atrial systole contraction of the atria by which blood is forced into the ventricles; it precedes the true or ventricular systole and is indicated by the fourth heart sound.
extra systole see extrasystole.
ventricular systole contraction of the ventricles, forcing blood into the aorta and pulmonary artery.

sys·to·le

(sis'tō-lē),
Contraction of the heart, especially of the ventricles, by which the blood is driven through the aorta and pulmonary artery to traverse the systemic and pulmonary circulations, respectively; its occurrence is indicated physically by the first sound of the heart heard on auscultation, by the palpable apex beat, and by the arterial pulse.
[G. systolē, a contracting]

systole

/sys·to·le/ (sis´to-le) the contraction, or period of contraction, of the heart, especially of the ventricles.systol´ic
aborted systole  a weak systole, usually premature, not associated with pulsation of a peripheral artery.
atrial systole  the contraction of the atria by which blood is propelled from them into the ventricles.
extra systole  extrasystole.
ventricular systole  the contraction of the cardiac ventricles by which blood is forced into the aorta and pulmonary artery.

systole

(sĭs′tə-lē)
n.
The rhythmic contraction of the heart, especially of the ventricles, by which blood is driven through the aorta and pulmonary artery after each dilation or diastole.

sys·tol′ic (sĭ-stŏl′ĭk) adj.

systole

[sis′təlē]
Etymology: Gk, systole, contraction
the contraction of the heart, driving blood into the aorta and pulmonary arteries. The occurrence of systole is indicated by the first heart sound heard on auscultation, by the palpable apex beat, and by the peripheral pulse. systolic, adj.
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Systole

systole

Cardiology Contraction of the heart, generally understood to be ventricular, with ejection of blood from the right ventricle into the pulmonary arteries and from the left venticle into the aorta Signs of left ventricular systole 1st heart sound, apical beat, arterial pulse. See Ejection fraction. Cf Diastole.

sys·to·le

(sis'tŏ-lē)
Contraction of the heart, especially of the ventricles, by which the blood is driven through the aorta and pulmonary artery to traverse the systemic and pulmonary circulations, respectively; its occurrence is indicated physically by the first sound of the heart heard on auscultation, by the palpable apex beat, and by the arterial pulse.

systole

The period during which the chambers of the heart (the atria and the ventricles) are contracting. Atrial systole, in which blood passes down into the ventricles, precedes the more powerful ventricular systole in which blood is driven into the arteries. Systole alternates with a relaxing period called DIASTOLE.

systole

see HEART CARDIAC CYCLE.

systole

the phase in each heart beat when the ventricles are contracting and ejecting blood. See also cardiac cycle, electrocardiogram, venous return.

systole

period during the cardiac cycle during which heart muscle and chambers contract, ejecting blood from heart into the aorta (to reach the systemic circulation) and pulmonary artery (to reach the pulmonary circulation) (contrast with diastole)

sys·to·le

(sis'tŏ-lē)
Contraction of heart, especially of ventricles, by which blood is driven through aorta and pulmonary artery to traverse systemic and pulmonary circulations, respectively.

systole (sis´təlē),

n the period of contraction of the heart. The term specifically designates the contraction of the ventricles, as distinguished from auricular contraction. It occurs with the first heart sound. The pressure from the systolic contractions is taken up and stored as potential energy by the elastic properties of the aorta and other great vessels of the arterial system. This storage of energy protects the smaller, more fragile vessels from undue pressure. The even flow and steady pressure of the blood are sustained by the controlled release of the potential energy stored in the arterial walls into kinetic energy for movement of the blood during the diastolic phase of heart function. The pressure recorded at the height of the ventricular contraction is the systolic pressure. In the adult the normal blood pressure is 120/80 mm Hg (systolic/diastolic). It rises with advancing age to 135/89 at 60 years of age. See also diastole; pressure, blood, stage; and pressure, systolic blood.

systole

the contraction, or period of contraction, of the heart, especially of the ventricles, during which blood is forced into the aorta and pulmonary artery.

atrial systole
contraction of the atria by which blood is forced into the ventricles; it precedes the true or ventricular systole.
extra systole
ventricular systole
contraction of the ventricles, forcing blood into the aorta and pulmonary artery.
References in periodicals archive ?
In this study, the diameter of internal cavity of left ventricle at the end of systole and diameter of internal cavity of left ventricle at the end of diastole are measured.
I'm drawn to how Hayden sings of the body electric here: "brain matter, diastole, systole .
The company's "spring-like" devices harness elastic energy produced by the left ventricle during systole (contraction) and release the energy during diastole (relaxation).
A cystic swelling was attached to the atrial aspect of the anterior mitral leaflet, present during both systole and diastole (Figure 1a).
At the other end of the cardiac cycle - systole - blood flows more rapidly, resulting in dispersion of blood components and decreased viscosity.
This can, for example, show the blood within the cardiac chambers, as illustrated during diastole and systole in Figs 7b and 7c, respectively.
The oxygen transport process continues when right ventricular systole ejects mixed-venous blood into the pulmonary circulation for another encounter with alveolar gas.
Three TDI measurements were made for each subject: s', which corresponds to left ventricular wall motion at peak systole; e', which is wall motion between systole and diastole; and a', wall speed at end diastole.
Hamman's sign--a crunch-like sound heard over the left hemithorax that is accentuated during systole and expiration(18)--is present in approximately 50% of all cases of pneumomediastinunl.
Echocardiography (ECHO) revealed apical hypertrophy, with apical cavity obliteration during systole.
It is built on basic mechanical principles - energy from systole is harnessed and transferred to assist in diastole.
A transthoracic echocardiogram performed prior to discharge (2 days after cardiac catheterization) demonstrated significant improvement in the left ventricular ejection fraction (now 50%--55%) and only mild apical ballooning in ventricular systole, with hypokinesis of the apex and the distal third of the anterior wall.

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