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Descriptor English: Parasystole
Descriptor Spanish: Parasístole
Descriptor parasístole
Scope note: Arritmia cardíaca producida por la interacción de dos impulsos cardiacos de diferentes velocidades iniciados de modo independiente a partir de dos focos distintos. Generalmente uno de los focos es el NÓDULO SINOAURICULAR, el marcapaso normal. El foco ectópico suele estar en el VENTRÍCULO CARDIACO, pero puede estar situado también en la AURÍCULA CARDIACA o en el NÓDULO AURICULOVENTRICULAR. La modulación del ritmo parasistólico por el ritmo sinusal depende de la terminación del bloqueo de entrada que rodea el foco parasistólico.
Descriptor Portuguese: Parassístole
Descriptor French: Parasystole
Entry term(s): Parasystoles
Tree number(s): C14.280.067.672
C23.550.073.670
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D017574
Scope note: A cardiac arrhythmia that is caused by interaction of two independently initiated cardiac impulses of different rates from two separate foci. Generally one focus is the SINOATRIAL NODE, the normal pacemaker. The ectopic focus is usually in the HEART VENTRICLE but can be in the HEART ATRIUM or the ATRIOVENTRICULAR NODE. Modulation of the parasystolic rhythm by the sinus rhythm depends on the completeness of entrance block surrounding the parasystolic focus.
Annotation: coordinate IM with HEART ATRIUM; HEART VENTRICLES or other site in heart (NIM) if pertinent; sinus parasystole: coordinate IM with ARRHYTHMIA, SINUS (IM)
Allowable Qualifiers: BL blood
CF cerebrospinal fluid
CI chemically induced
CL classification
CN congenital
CO complications
DG diagnostic imaging
DH diet therapy
DI diagnosis
DT drug therapy
EC economics
EH ethnology
EM embryology
EN enzymology
EP epidemiology
ET etiology
GE genetics
HI history
IM immunology
ME metabolism
MI microbiology
MO mortality
NU nursing
PA pathology
PC prevention & control
PP physiopathology
PS parasitology
PX psychology
RH rehabilitation
RT radiotherapy
SU surgery
TH therapy
UR urine
VE veterinary
VI virology
Previous Indexing: Arrhythmia (1966-1993)
Public MeSH Note: 94
History Note: 94
DeCS ID: 31209
Unique ID: D017574
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1994/01/01
Date of Entry: 1992/12/28
Revision Date: 2007/07/09
Parasystole - Preferred
Concept UI M0026636
Scope note A cardiac arrhythmia that is caused by interaction of two independently initiated cardiac impulses of different rates from two separate foci. Generally one focus is the SINOATRIAL NODE, the normal pacemaker. The ectopic focus is usually in the HEART VENTRICLE but can be in the HEART ATRIUM or the ATRIOVENTRICULAR NODE. Modulation of the parasystolic rhythm by the sinus rhythm depends on the completeness of entrance block surrounding the parasystolic focus.
Preferred term Parasystole
Entry term(s) Parasystoles



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