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*  Congenital heart defect
Hypoplasia can affect the heart, typically resulting in the underdevelopment of the right ventricle or the left ventricle. This ... Congenital heart defects are known by a number of names including congenital heart anomaly, congenital heart disease, heart ... A congenital heart defect (CHD), also known as a congenital heart anomaly or congenital heart disease, is a problem in the ... Congenital heart defects are divided into two main groups: cyanotic heart defects and non-cyanotic heart defects, depending on ...
*  Dilated cardiomyopathy
Furthermore, stroke volume is decreased and a greater volume load is placed on the ventricle, thus increasing heart failure ... Complications can include heart failure, heart valve disease, or an irregular heartbeat. Causes include genetics, alcohol, ... Pieske B (2004). "Reverse remodeling in heart failure - fact or fiction?". Eur Heart J Suppl. 6: D66-78. doi:10.1016/j.ehjsup. ... but only in the presence of ischemic heart disease A person suffering from dilated cardiomyopathy may have an enlarged heart, ...
*  Heart block
This includes retrograde conduction from the ventricles, ectopic atrial beats, atrial fibrillation, and atrial flutter. The ... Heart block is a disease or inherited condition that causes a fault within the heart's natural pacemaker due to some kind of ... The human heart uses electrical signals to maintain and initiate the regular heart beat in a living person; incorrect ... In severe cases where the heart's ability to control and trigger heartbeats may be completely ineffective or unreliable, heart ...
*  Ventricle (heart)
... it also forms the apex of the heart. The left ventricle is thicker and more muscular than the right ventricle because it pumps ... A ventricle is one of two large chambers in the heart that collect and expel blood received from an atrium towards the ... The atrium (an adjacent/upper heart chamber that is smaller than a ventricle) primes the pump. Interventricular means between ... During diastole, the ventricles relax and fill with blood again. The left ventricle receives oxygenated blood from the left ...
*  Morton Mower
Normally, the heart's pacemaker regulates the contraction of the heart's ventricles. Ventricular fibrillation and ventricular ... causing the heart's ventricles to contract abnormally and preventing blood from circulating throughout the body. Ventricular ... Leads from the implanted defibrillator pass through a vein into the heart. The leads are attached to electrodes that monitor ... The device is now implanted in over 300,000 people worldwide and is 99% effective in correcting heart rhythm abnormalities and ...
*  Fish physiology
From there blood enters the heart ventricle and the cycle repeats. Sharks and rays typically have five pairs of gill slits that ... The heart pumps the blood in a single loop throughout the body. In most fish, the heart consists of four parts, including two ... The atrium serves as a one-way antechamber, sends blood to the third part, ventricle. The ventricle is another thick-walled, ... The heart of fish is therefore only a single pump (consisting of two chambers). Fish have a closed-loop circulatory system. ...
*  Shark
From there blood enters the heart ventricle and the cycle repeats. Most sharks are "cold-blooded" or, more precisely, ... The respiration and circulation process begins when deoxygenated blood travels to the shark's two-chambered heart. Here the ...
*  Isotonic contraction
For example, the heart's ventricles contract to expel blood into the pulmonary artery and aorta. As the blood flows out, the ...
*  QRS complex
Depolarization of the heart ventricles occurs almost simultaneously, via the bundle of His and Purkinje fibers. If they are ... It corresponds to the depolarization of the right and left ventricles of the human heart. In adults, it normally lasts 0.06- ... Ventricles contain more muscle mass than the atria, therefore the QRS complex is considerably larger than the P wave. The QRS ... Pathologic Q waves occur when the electrical signal passes through stunned or scarred heart muscle; as such, they are usually ...
*  Channichthyidae
... specifically ventricles. Loss of myoglobin gene expression in icefish heart ventricles has occurred at least four separate ... Their hearts lack coronary arteries, and the ventricle muscles are very spongy, enabling them to absorb oxygen directly from ... Their hearts, large blood vessels and low-viscosity (RBC free) blood are specialized to carry out very high flow rates at low ... The little extra oxygen absorbed by the skin may play a part in supplementing the oxygen supply to the heart which receives ...
*  Atrioventricular block
The ventricles of the heart have their own pacing mechanisms, which can maintain a lowered heart rate in the absence of SA ... is a type of heart block in which the conduction between the atria and ventricles of the heart is impaired. Under normal ... Third-degree atrioventricular block is the most severe of the types of heart ventricle blockages. Persons suffering from ... Second-degree atrioventricular block - The heart's electrical signals between the upper and lower signals of the heart are ...
*  Homeobox protein Nkx-2.5
... influences HAND1 and HAND2 transcription factors that control the essential asymmetrical development of the heart's ventricles ... Mutations in tinman result in loss of heart formation in the embryo, suggesting that tinman is essential for Drosophila heart ... and HAND2 transcription factors to direct heart looping during early heart development. NKX2.5 in vertebrates is equivalent to ... CSX, the human homolog of murine Csx, has a homeodomain sequence identical to that of Csx and is expressed only in the heart, ...
*  Atrial natriuretic peptide
Brain natriuretic peptide (BNP) - a misnomer; it is secreted by cardiac muscle cells in the heart ventricles - is similar to ... ANP is synthesized, and secreted by cardiac muscle cells in the walls of the atria in the heart. These cells contain volume ... Recombinant human ANP has been approved in Japan to treat patients with heart failure. As of 2017 a truncated form of ANP ... Later, the substance was purified from heart tissue by several groups and named atrial natriuretic factor (ANF) or ANP. ANP is ...
*  Bundle branches
The bundle branches, or Tawara branches, are offshoots of the bundle of His in the heart's ventricle. They play an integral ... Silverman ME, Grove D, Upshaw CB (June 2006). "Why does the heart beat? The discovery of the electrical system of the heart". ... They play an integral role in the electrical conduction system of the heart by transmitting cardiac action potentials to the ... Widran J, Lev M (December 1951). "The dissection of the atrioventricular node, bundle and bundle branches in the human heart". ...
*  Check valve
Heart valves are essentially inlet and outlet check valves for the heart ventricles, since the ventricles act as pumps. ...
*  Cardiac ventriculography
... left ventricle. Cardiac ventriculography involves injecting contrast media into the heart's ventricle(s) to measure the volume ... Cleveland Clinic Heart Book, Hyperion, ISBN 0-7868-6495-8 http://healthguide.howstuffworks.com/nuclear-ventriculography- ...
*  Elaeophora sagitta
E. sagitta adults are typically found in the heart ventricles, as well as coronary and pulmonary arteries, and occasionally ... and have been associated with hypertrophy and dilatation of heart ventricles, thrombosis (blood clots) and myocarditis ( ... Adults of E. sagitta have been found attached to the inner walls of the chambers and vessels of the heart, as well as the ... Pletcher, J.M.; Boomker, J.; Vos, V. De; Gardiner, C.H. (1989). "Lesions in the heart and lungs of the greater kudu ( ...
*  Loeffler endocarditis
... cardiomyopathy is defined as a disease of the heart muscle which results in impaired filling of the heart ventricles during ... Commonly the heart will develop large mural thrombi (thrombi which lay against ventricle walls) due to the deterioration of ... The eosinophilia and eosinophilic penetration of the cardiac myocytes leads to a fibrotic thickening of portions of the heart ( ...
*  RAD140
Induces Inflammation in Rat Right Heart Ventricle: Evidence for an Androgen-Specific, Species-Specific Mechanism. Roles of ...
*  AV nodal reentrant tachycardia
... and have electrophysiologic properties similar to muscular heart tissue of the heart's ventricles. Play media The main symptom ... In some cases, the onset of the fast heart is associated with a brief drop in blood pressure. When this happens, the patient ... This would normally only happen if all other treatments have been ineffective, or if the fast heart rate is poorly tolerated (e ... It is a type of supraventricular tachycardia (SVT), meaning that it originates from a location within the heart above the ...
*  Admittance and conductance in cardiac performance
... in heart ventricles to determine the instantaneous volume of the ventricle. This technique involves inserting a tetra-polar ... The total Admittance (Y), of the blood filled ventricle is given by Y = Gb + Gm + iωCm where Gb is the measured conductance of ... Although both σ and ε are functions of the health of the heart tissue, they are relatively constant for short periods of time. ... In cardiology, a tetra-polar catheter is inserted into the ventricle and a constant current (I) is applied across the two outer ...
*  LVSD
... may refer to: Left Ventricular end-systolic Dimension; see Ventricle (heart)#Dimensions Left ventricular systolic ... dysfunction; see Heart failure#Systolic dysfunction Ligonier Valley School District in Westmoreland County, Pennsylvania. ...
*  Biological pacemaker
It's indicated for issues such as heart block, slow heart rate, and asynchronous heart ventricle contractions. The biological ... More recently a gene called TBX18 has been non-invasively applied to speed up heart rates caused by heart block (2014), and ... The process was first introduced at the scientific sessions of the American Heart Association in Anaheim in 2001, and the ... Meanwhile, other genes and cells have been discovered, including heart muscle cells derived from embryonic stem cells, "HCN" ...
*  Preload (cardiology)
In cardiac physiology, preload is the end diastolic volume that stretches the right or left ventricle of the heart to its ... Estimation may be inaccurate, for example in a chronically dilated ventricle new sarcomeres may have formed in the heart muscle ... Passive filling of the (heart) ventricle and subsequent atrial contraction thus allows an echocardiographically volumetric ... at the ventricle's midpoint), and h = thickness of the ventricle. This calculation is based on the Law of Laplace which states ...
*  List of dog diseases
... is a hole in the division between the heart ventricles (interventricular septum). It is a congenital heart disease in dogs. ... Dilated cardiomyopathy (DCM) is a disease of heart muscle resulting in decreased myocardial contractility. The left ventricle ... There usually are no signs in dogs except for a heart murmur. However, a large defect can result in heart failure or in ... Heart valve dysplasia (including mitral and tricuspid valve dysplasia) is a congenital heart abnormality in dogs. Dysplasia of ...
*  Atrioventricular node
... or AV node is a part of the electrical conduction system of the heart that coordinates the top of the heart. It electrically ... It ensures that the atria have ejected their blood into the ventricles first before the ventricles contract. This also protects ... This is the property of the AV node that prevents rapid conduction to the ventricle in cases of rapid atrial rhythms, such as ... Contraction of heart muscle cells requires depolarization and repolarization of their cell membranes. Movement of ions across ...
*  Cardiac resynchronization therapy
It resynchronizes the contractions of the heart's ventricles by sending tiny electrical impulses to the heart muscle, which can ... "Cardiac Resynchronization Therapy and Implantable Cardioverter Defibrillator Therapy in Advanced Heart Failure". Heart Failure ... CRT and CRT-D have become increasingly important therapeutic options for patients with moderate and severe heart failure. ... Cardiac resynchronization therapy (CRT) is an effective therapy in patients with heart failure and dyssynchrony identified as a ...