Variability and diversity of the electrical cardiac systole.

@article{BreijoMarquez2009VariabilityAD,
  title={Variability and diversity of the electrical cardiac systole.},
  author={Francisco Ramon Breijo-Marquez and Manuel Pardo R{\'i}os},
  journal={BMJ case reports},
  year={2009},
  volume={2009}
}
The electrical cardiac systole originates from the beginning of the P wave (atrial depolarisation) until the end of the downward branch of the T wave (ventricular repolarisation). It includes, therefore, succession P-QRS-T and its corresponding intervals and segments: PQ, ST, and QT. The mathematical possibilities of variability in the length of the electrical systole of the heart may be diverse. It is well documented and established that such changes in length may make the myocardial cells… CONTINUE READING
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