TY  - CHAP
M1  - Book, Section
TI  - Sustained Ventricular Tachycardia
A1  - H. Sauer, William
A1  - Tedrow, Usha B.
A2  - Loscalzo, Joseph
A2  - Fauci, Anthony
A2  - Kasper, Dennis
A2  - Hauser, Stephen
A2  - Longo, Dan
A2  - Jameson, J. Larry
Y1  - 2022
N1  - 
T2  - Harrison's Principles of Internal Medicine, 21e
AB  - Sustained  monomorphic  ventricular  tachycardia  (VT)  is  a  ventricular  arrhythmia  with  a  wide  QRS  lasting  for  30  s  or  requiring  an  intervention  for  termination.  Each  QRS  complex  resembles  the  others,  indicating  either  a  site  of  origin  from  either  an  automatic  focus  or  fixed  reentry  circuit.  In  structural  heart  disease,  the  substrate  is  most  often  an  area  of  patchy  replacement  fibrosis  due  to  infarction,  fibrosis,  inflammation,  or  prior  cardiac  surgery  that  creates  anatomic  or  functional  reentry  pathways.  Less  commonly,  VT  is  related  to  reentry  or  automaticity  in  diseased  conduction  pathways  in  the  Purkinje  system.  While  scar-related  reentrant  VTs  are  associated  with  risk  of  sudden  death,  idiopathic  VT  is  a  more  benign  form  of  VT  that  occurs  in  structurally  normal  hearts  and  can  be  due  to  a  focal  region  of  automaticity  in  the  myocardium  or  reentry  involving  a  portion  of  the  Purkinje  system.  
SN  - 
PB  - McGraw-Hill Education
CY  - New York, NY
Y2  - 2024/04/25
UR  - accessmedicine.mhmedical.com/content.aspx?aid=1190496983
ER  -