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Topic: Systole

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Right atrium

Diastole

Afterload

Ventricle (heart)

Heart murmur

Atrial septal defect

Mitral valve

Aortic stenosis

Mitral regurgitation

Atrial flutter

Aortic valve

Coronary circulation

Heart

Cardiology

Mitral valve prolapse

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	Systole - Wikipedia, the free encyclopedia
		Systole (medicine) is a term describing the contraction of the heart.
		Systole (mathematics) is a term used in mathematics.
		Systole (literature) is a term used to describe entry into the imagination/surreal in a text.
	en.wikipedia.org /wiki/Systole (107 words)

	Cardiac cycle - Wikipedia, the free encyclopedia
		Electrical systole of the atria begins with the onset of the P wave on the EKG.
		In an electrocardiogram, electrical systole of the ventricles begins at the beginning of the QRS complex.
		Systole, or contraction, of the heart is initiated by the electrical cells of the sinoatrial node, which is the heart's natural pacemaker.
	en.wikipedia.org /wiki/Diastole (1327 words)

	Isovolumetric contraction (Site not responding. Last check: 2007-11-05)
		Electrically, ventricular systole is defined as the interval between the QRS complex and the end of the T wave (the Q-T interval).
		Mechanically, ventricular systole is defined as the interval between the closing of the AV valves and the opening of the semilunar valves (aortic and pulmonary valves).
		The QRS complex is due to ventricular depolarization, and it marks the beginning of ventricular systole.
	www-medlib.med.utah.edu /kw/pharm/2Isovolumetric_contraction.html (179 words)

	Systole definition - Medical Dictionary definitions of popular medical terms
		The final letter in "systole" is pronounced as a long "e" as in "lee." The adjective for systole is systolic.
		The systolic pressure is specifically the maximum arterial pressure during contraction of the left ventricle of the heart.
		A systolic murmur is a heart murmur heard during systole, the time the heart contracts, between the normal first and second heart sounds.
	www.medterms.com /script/main/art.asp?articlekey=16204 (278 words)

	diastole -- Encyclopædia Britannica
		Systole is most often used to adjust the rhythm of a line to achieve metrical regularity.
		Lasting usually 0.3 to 0.4 second, ventricular systole is introduced by a very brief period of contraction, followed by the ejection phase, during which 80 to 100 cubic centimetres of blood...
		It consists of an inflatable rubber cuff, which is wrapped around the upper arm and which is connected to an apparatus that records pressure, usually in terms of the height of a column of mercury or on a dial.
	www.britannica.com /eb/article-9030294 (432 words)

	iugr.jpg (Site not responding. Last check: 2007-11-05)
		The umbilical artery is evaluated by measuring the blood flow velocity at peak systole (maximal contraction of the heart) and peak diastole (maximal relaxation of the heart).
		This is computed by measuring the peak of systole and then dividing it by the sum of measurements at peak systole and diastole.
		Systole (Sys) and diastole (D) are identified in green Note that diastole is less at 20 weeks (yellow ellipse) than at 36 weeks (red ellipse).
	www.fetal.com /Umbilart.htm (685 words)

	[No title]
		There are systolic ejection sounds that are found on auscultation that are discrete events that occur at the onset of systole and indicate disorders of the heart such as hypertension or aortic aneurysm.
		The French call this a systolic gallop b/c it has a cadence that is similar to a gallop rhythm, although the extra sound is systolic and not diastolic.
		This is the murmur of mitral valve prolapse that occurs due to a valve becoming incompetent during systole and allowing a gradient of pressure btwn the LV and LA until the end of systole.
	www.uhmc.sunysb.edu /som/students/2001/noteservice/h27.doc (2278 words)

	Selected Encyclopedia of Heart Diseases and Conditions
		The end result is that the ventricular volume is drastically reduced and a smaller amount of blood is ejected from the ventricle at a much higher speed.
		The speed of ejection and the narrowness of the path of ejection inside the ventricle cause a murmur that can be heard during systole.
		The actual regurgitation sounds are blowing murmurs during systole (the pumping phase).
	www.hhmi.org /biointeractive/vlabs/cardiology/content/cg/encyclopedia.html (1751 words)

	[No title]
		Anacrotic pulse: systolic pressure is slow to rise and decreased in amplitude because of slowed ejection.
		Systolic collapse--rapid fall off in aortic pressure late in systole because most of ejection was completed early.
		This is a systolic flow murmur as opposed to the diastolic flow murmur seen in mitral insufficiency.
	www.ursa.kcom.edu /Department/LectureNotes/Spring/ValvularDefect.doc (735 words)

	MSN Encarta - Search Results - systole
		Systole, the contraction phase of the heart-pumping cycle of contraction and relaxation.
		Systolic pressure, the higher number of a blood pressure reading, is the...
		blood pressure measurement, description of systolic and diastolic pressures, cardiac cycle, hypertension, pulse, pumping action of heart
	ca.encarta.msn.com /systole.html (89 words)

	Pericardial Constriction
		Accordingly, the occurrence of a positive wave in the JVP during ventricular systole is strong evidence of tricuspid regurgitation (Fig.
		This abnormal systolic waveform is usually referred to as a v or cv wave, although it has also been referred to as an r (regurgitant) or an s (systolic) wave.
		The positive, late systolic v wave results from the increasing RA blood volume during ventricular systole when the tricuspid valve normally is closed.
	www.rjmatthewsmd.com /Definitions/pericardial_constriction.htm (1787 words)

	Assessment of venous flow in normal and high-risk fetuses: Is the future now?
		Forward flow during ventricular systole which is in response to the fall in atrial pressure that accompanies atrial relaxation and the downward displacement of the tricuspid or mitral annulus as the right and left ventricles contract;
		The yellow arrows represent the measurement of the peak velocity for ventricular systole and early ventricular diastole.
		This observation supports the concept that, during atrial systole, the A wave of the ductus venosus reflects the hemodynamic status of the right ventricle, since the foramen ovale is closed during atrial systole.
	www.obgyn.net /fm/articles/assessment_devore.htm (6711 words)

	Contraction-relaxation coupling: determination of the onset of diastole -- Solomon et al. 277 (1): 23 -- AJP - Heart ...
		on the duration of systole represented the onset of ventricular
		The aorta was occluded progressively throughout the duration of systole.
		Time course of systolic loading is an important determinant of ventricular relaxation.
	ajpheart.physiology.org /cgi/content/full/277/1/H23 (2753 words)

	Atrial Systole (Site not responding. Last check: 2007-11-05)
		Prior to atrial systole, blood has been flowing passively from the atrium into the ventricle through the open AV valve.
		During atrial systole the atrium contracts and tops off the volume in the ventricle with only a small amount of blood.
		It occurs with hypertrophic congestive heart failure, massive pulmonary embolism, tricuspid incompetence, or cor pulmonale.
	www-medlib.med.utah.edu /kw/pharm/1Atrial_Systole.html (192 words)

	Left ventricular torsion is equal in mice and humans -- Henson et al. 278 (4): 1117 -- AJP - Heart and Circulatory ...
		Systolic twist angle of any point in myocardium is defined from its position at end diastole (ED) to any point during systole.
		Systolic twist was qualitatively similar in both human and mouse as shown in Figs.
		in early systole and plateaus for the remainder of systole.
	ajpheart.physiology.org /cgi/content/full/278/4/H1117 (4360 words)

	Quantitative analysis of segmental wall motion throughout systole and diastole in the normal human left ventricle -- ... (Site not responding. Last check: 2007-11-05)
		Quantitative analysis of segmental wall motion throughout systole and diastole in the normal human left ventricle -- Klausner et al.
		Quantitative analysis of segmental wall motion throughout systole and diastole in the normal human left ventricle
		regions in normal wall motion in both systole and diastole.
	circ.ahajournals.org /cgi/content/abstract/65/3/580 (331 words)

	Systole Corporation (Site not responding. Last check: 2007-11-05)
		The results are costly inefficiencies, delays, and significant problems with claim adjudication and reimbursement – contributing to less-than-ideal financial performance within the physician’s practice.
		Systole will end the confusion and inefficiencies with the creation of its internet healthcare portal.
		Our business centers around this portal, which will allow physicians direct access to all of their health insurance companies all at once, all in one place.
	www.systole.us /product.htm (232 words)

	MRI-determined left ventricular "crescent effect": a consequence of the slight deviation of contents of the pericardial ...
		Comparison of systolic and diastolic contours for 2 representative normal subjects (subjects NL1 and NL2) and 1 patient with congenital absence of the pericardium (subject NP).
		Systolic contours are shaded in gray; diastolic contours are outlined in fl.
		Assessment of systolic and diastolic LV function by MR myocardial tagging.
	ajpheart.physiology.org /cgi/content/full/288/2/H848 (3960 words)

	The Heart
		This should really be called "ventricular systole", but don't worry about this for GCSE.
		During systole the thick muscular walls of the ventricles contract.
		The diagram shows systole in the left side of the heart.
	www.purchon.com /biology/heart.htm (625 words)

	Echo 214 Heart Sounds and Murmurs
		occupies all of systole and continues as long as there is a sufficient pressure gradient across the incompetent orifice to generate a regurgitant flow
		They end abruptly in early systole or mid-systole and are characteristic of certain types of VSDs, mitral or tricuspid regurgitation.
		It is due to mitral insufficiency where the valve is competent during early systole but prolapses into the LA in late systole.
	www.echo-web.com /asp/samples/sample4.asp (125 words)

	Citebase - Logarithmic growth of systole of arithmetic Riemann surfaces along congruence subgroups
		Logarithmic growth of systole of arithmetic Riemann surfaces along congruence subgroups
		Similar results are obtained for the systole of hyperbolic 3-manifolds, relative to their simplicial volume.
		We prove lower bounds for the area of a metric on X, in terms of the square of the least length of a noncontractible loop in X. We thus establish a uniform systolic inequality for all unfree 2-complexes.
	citebase.eprints.org /cgi-bin/citations?id=oai:arXiv.org:math/0505007 (816 words)

	Innocent Murmurs (Site not responding. Last check: 2007-11-05)
		With one quite rare exception, all continuos murmurs arise in blood vessels because only in blood vessels does flow continue from systole to diastole; this is a continuos murmur.
		The origin of this murmur comes from either turbulence in the left ventricular outflow or as a result of vibration of fibrous bands of tissue crossing the left ventricular lumen, now frequently identified by echocardiography.
		Of medium frequency, the murmur has a characteristic shape rising to a peak during systole, decreasing in late systole and then increasing again to a louder peak in early to mid-diastole as the tricuspid valve opens.
	home.coqui.net /myrna/murmur.htm (1285 words)

	Cardiac Function: MR Evaluation in One Breath Hold with Real-time True Fast Imaging with Steady-State Precession -- Lee ...
		Seven short-axis sections are used in f (end systole) because the most basal and apical sections (lower and upper arrows, respectively) do not lie within the left ventricle.
		This is less apparent in c and d, especially at end systole (arrows in d) at blood-pool margins Midventricular short-axis MR images in the same volunteer.
		In-plane saturation likely causes the relative loss of signal intensity in the blood pool (arrows in j and l) adjacent to the myocardium in g and h that is not as apparent in i-l despite their lower spatial resolution.
	radiology.rsnajnls.org /cgi/content/full/222/3/835 (7111 words)

	PPT Slide (Site not responding. Last check: 2007-11-05)
		Systole: phase of cardiac contraction; during systole, pressure in a chamber is elevated and blood is ejected
		note: atrial contraction is called atrial systole and ventricular contraction is called ventricular systole
		note: ventricular contraction is called ventricular systole and ventricular relaxation is called ventricular diastole
	www.cat.cc.md.us /~dhargrov/ppp/heart_intro/tsld054.htm (85 words)

	FARA - Friedreich's Ataxia Research Alliance \| Education and Resources \| Beginners Primer
		Systolic murmurs are graded by intensity (loudness) from one to six.
		Later still, however, the cardiac situation shifted gradually toward a hypokinetic form of the disease, with a progressive thinning of the interventricular septum and posterior wall of the left ventricle, associated enlargement of the ventricular chambers and increasingly severe hypokinesia leading to repeated episodes of heart failure.
		Noninvasive assessment of systolic and diastolic function in 50 patients with Friedreich's ataxia.
	www.faresearchalliance.org /education/beginners_primer.asp (4390 words)

	systole and diastole -- Encyclopædia Britannica
		in prosody, systole is the shortening of a syllable that is by pronunciation or by position long.
		The word is from the Greek systole, meaning, literally, “contraction.”
		Diastole, the opposite of systole, is the lengthening of a short quantity or syllable for metric irregularity.
	www.britannica.com /eb/article-9125689 (632 words)

	. Echo/Doppler
		Time systole and diastole by watching the heart as it contracts and relaxes.
		Then watch the structures impinge upon and then occlude the outflow tract in systole.
		If the motion is too fast for you to follow, click the "Pause" or "Stop" buttons on Windows Media Player and then use your mouse cursor to move the horizontal slider slowly back and forth to see the motion at a slower speed.
	www.vmth.ucdavis.edu /Cardio/cases/case5/echodopp.htm (375 words)

	systole - General Practice Notebook (Site not responding. Last check: 2007-11-05)
		Ventricular systole is the power generating phase of the cardiac cycle during which the ventricle is contracting.
		Systole is defined differently according to how one observes the heart:
		Oxbridge Solutions Ltd® is an independent company owned by the authors which does not receive income from any other organisation or individual.
	www.gpnotebook.co.uk /cache/577437748.htm (130 words)

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