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Definition
 
enEnglisch
Heart Arrest Definition: Cessation of heart beat or MYOCARDIAL CONTRACTION. If it is treated within a few minutes, heart arrest can be reversed in most cases to normal cardiac rhythm and effective circulation.
heart arrest Definition: cessation of the heart beat.
Cardiac Arrest Definition: Cardiac standstill or arrest; absence of a heartbeat.
Cardiac Arrest Definition: Sudden cessation of the pumping function of the heart, with disappearance of arterial blood pressure, connoting either ventricular fibrillation or ventricular standstill.
Cardiac Arrest Definition: Sudden cessation of the pumping function of the heart, with disappearance of arterial blood pressure, connoting either ventricular fibrillation or ventricular standstill.
Ventricular alpha-Myosin Definition: A form of ventricular myosin that contains two alpha-myosin heavy chains. It has a higher ATPase activity and contracts at a faster rate than myosins containing beta-myosin heavy chains.
Ventricular Fibrillation Definition: A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses (400-600/min) in HEART VENTRICLES. Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). It is one of the major electrocardiographic patterns seen with CARDIAC ARREST.
ventricular fibrillation Definition: arrhythmia characterized by fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.
Ventricular Fibrillation Definition: Arrhythmia characterized by fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.
Ventricular Fibrillation Definition: Arrhythmia characterized by fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.
VENTRICULAR FIBRILLATION Definition: An arrhythmia characterized by an irregular pattern of high or low-amplitude waves that cannot be differentiated into QRS complexes or T waves. These electrocardiographic waves occur as a result of fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle. (NCI)
Tachycardia, Ventricular Definition: An abnormally rapid ventricular rhythm usually in excess of 150 beats per minute. It is generated within the ventricle below the BUNDLE OF HIS, either as autonomic impulse formation or reentrant impulse conduction. Depending on the etiology, onset of ventricular tachycardia can be paroxysmal (sudden) or nonparoxysmal, its wide QRS complexes can be uniform or polymorphic, and the ventricular beating may be independent of the atrial beating (AV dissociation).
Ventricular Tachycardia Definition: An abnormally rapid ventricular rhythm with aberrant ventricular excitation, usually in excess of 150 beats per minute.
Ventricular Tachycardia Definition: A tachycardia arising distal to bundle of His, with a rate greater than 100 beats per minute.
VENTRICULAR TACHYCARDIA Definition: A tachycardia arising distal to bundle of His, with a rate greater than 100 beats per minute. (NCI)
Ventricular Function Definition: The hemodynamic and electrophysiological action of the HEART VENTRICLES.
Ventricular Arrhythmia Definition: Irregular heart beat resulting from a pathologic process in the cardiac ventricles.--2004
Ventricular Premature Complexes Definition: A type of cardiac arrhythmia with premature contractions of the HEART VENTRICLES. It is characterized by the premature QRS complex on ECG that is of abnormal shape and great duration (generally >129 msec). It is the most common form of all cardiac arrhythmias. Premature ventricular complexes have no clinical significance except in concurrence with heart diseases.
premature ventricular contraction Definition: premature ventricular beats, the most common of all arrhythmias; in the absence of heart disease, they are not of great clinical significance, but in patients with coronary disease, they represent a constant danger of ventricular tachycardia or fibrillation and sudden death.
Ventricular Premature Complex Definition: Ectopic impulses originating in the ventricles.
PREMATURE VENTRICULAR COMPLEX Definition: Ectopic impulses originating in the ventricles. (NCI)
Ventricular Flutter Definition: A ventricular tachyarrhythmia characterized electrocardiographically by smooth undulating waves with QRS complexes merged with T waves, a rate of approximately 250 per minute.
Ventricular Flutter Definition: A ventricular tachyarrhythmia characterized electrocardiographically by smooth undulating waves with QRS complexes merged with T waves, a rate of approximately 250 per minute.
Ventricular Flutter Definition: A potentially lethal cardiac arrhythmia characterized by an extremely rapid, hemodynamically unstable ventricular tachycardia (150-300 beats/min) with a large oscillating sine-wave appearance. If untreated, ventricular flutter typically progresses to VENTRICULAR FIBRILLATION.
VENTRICULAR FLUTTER Definition: A ventricular tachyarrhythmia characterized by a high ventricular rate (180 and 250 beats per minute) with a regular rhythm. The electrocardiogram shows large oscillating sine wave-like complexes occurring as a result of QRS complexes and T waves being merged. The P wave is not visible. (NCI)
CANNULA, VENTRICULAR Definition: A ventricular cannula is a device used to puncture the ventricles of the brain for aspiration or for injection. This device is frequently referred to as a ventricular needle.
Cannulae, Ventricular Definition: Cannulae that are inserted into a ventricle of the heart during cardiopulmonary bypass surgery to decompress or relieve pressure in the left ventricle. These semirigid or rigid cannulae are usually made of plastic (polymers).
Ventricular Pressure Definition: The pressure within a CARDIAC VENTRICLE. Ventricular pressure waveforms can be measured in the beating heart by catheterization or estimated using imaging techniques (e.g., DOPPLER ECHOCARDIOGRAPHY). The information is useful in evaluating the function of the MYOCARDIUM; CARDIAC VALVES; and PERICARDIUM, particularly with simultaneous measurement of other (e.g., aortic or atrial) pressures.
Ventricular Septum Definition: The muscular structure separating the right and the left lower chambers (HEART VENTRICLES) of the heart. The ventricular septum consists of a very small membranous portion just beneath the AORTIC VALVE, and a large thick muscular portion consisting of three sections including the inlet septum, the trabecular septum, and the outlet septum.
Interventricular septum Definition: Cardiac septum which separates the right ventricle from the left ventricle.
Interventricular Septum Definition: The wall that separates the left and right ventricles of the heart.
S3 Gallop Definition: A finding which can be heard on auscultation of the heart in the setting of congestive heart failure. The sound of the S3 gallop, which immediately follows the second heart sound (S2) is thought to be produced by the sound of blood flowing into a noncompliant ventricle.
Ventricular Dysfunction Definition: A condition in which HEART VENTRICLES exhibit impaired function.
Bigeminy Definition: An electrocardiographic finding of a normal QRS followed by a premature ventricular contraction; a rhythmic pairing of normal and abnormal beats originating in the ventricles in a 1-1 ratio.
BIGEMINY Definition: An electrocardiographic finding of a normal QRS followed by a premature ventricular contraction; a rhythmic pairing of normal and abnormal beats originating in the ventricles in a 1-1 ratio. (NCI)
ventricular hypertrophy Definition: general increase in bulk of the myocardium not due to tumor formation, nor to an increase in the number of cells, but due to chronic pressure overload; enlargement of the right ventricle of the heart is often attributed to pulmonary hypertension; enlargement of the left ventricle of the heart is attributed to sustained abnormal pressure or volume loads.
Ventricular Hypertrophy Definition: Electrocardiographic findings suggestive of enlarged cardiac ventricles.
VENTRICULAR HYPERTROPHY Definition: Electrocardiographic findings suggestive of enlarged cardiac ventricles. (NCI)
Wall of ventricle Definition: Wall of cardiac chamber that surrounds the cavity of a ventricle.
Ventricular Remodeling Definition: The geometric and structural changes that the HEART VENTRICLES undergo, usually following MYOCARDIAL INFARCTION. It comprises expansion of the infarct and dilatation of the healthy ventricle segments. While most prevalent in the left ventricle, it can also occur in the right ventricle.
CATHETER, VENTRICULAR Definition: A ventricular catheter is a device used to gain access to the cavities of the brain for injection of material into, or removal of material from, the brain.
Ventricular Myosins Definition: Isoforms of MYOSIN TYPE II, specifically found in the ventricular muscle of the HEART. Defects in the genes encoding ventricular myosins result in FAMILIAL HYPERTROPHIC CARDIOMYOPATHY.
Ventricular Couplet Definition: Two sequential ventricular premature complexes. An otherwise normal finding, but possibly indicative of electrical heart disease particularly in comparison with a single ventricular premature complexes.
VENTRICULAR COUPLET Definition: Two sequential ventricular premature complexes. An otherwise normal finding, but possibly indicative of electrical heart disease particularly in comparison with a single ventricular premature complexes. (NCI)
Ventricular Definition: Of or relating to a ventricle (of the heart or brain).
Ventricular Myxoma Definition: A cardiac myxoma arising from the ventricle.
Aorto-ventricular junction Definition: Zone of continuity which connects the aorta to the outflow part of the left ventricle.
Regular ventricular cardiac myocyte Definition: Regular cardiac myocyte of a cardiac ventricle.
Adenosine-Sensitive Ventricular Tachycardia Definition: A condition that occurs as a result of cAMP-mediated triggered activity and typically originates from the right ventricular outflow tract (RVOT). This type of tachycardia occurs in patients with apparently normal hearts.
ADENOSINE-SENSITIVE VENTRICULAR TACHYCARDIA Definition: A condition that occurs as a result of cAMP-mediated triggered activity and typically originates from the right ventricular outflow tract (RVOT). This type of tachycardia occurs in patients with apparently normal hearts. (NCI)
 
 
itItalienisch
ventricolare Definition: [1] ventrikulär (einen Ventrikel betreffend)