Rare disease
Variability and diversity of the electrical cardiac systole
1 Faculty of Medicine, University of Murcia, Cardiology, Campus Universitary, Murcia, 30100, Spain
2 Faculty of Medicine. University of Murcia, Chronobiology, Campus Universitary, Murcia, 30100, Spain
Correspondence to:
Francisco R Breijo-Marquez, frbreijo{at}gmail.com
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 more vulnerable and unstable, and may also cause serious cardiac arrhythmias and even sudden death. The current presentation illustrates these electrocardiographic entities with significant variations in the length of its waves and intervals: short PQ and QT intervals, short PQ and long QT, long PQ and long QT. All parameters appeared in young adult males.
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
- Full Text
- Submit a response
- Alert me when this article is cited
- Alert me when eLetters are posted
- Alert me if a correction is posted
Services
- Email this link to a friend
- Similar articles in this journal
- Add article to my folders
- Download to citation manager
- Request Permissions
Citing Articles
Google Scholar
PubMed
Topic Collections
Bookmark with
Register for free content
The full text of all Editor's Choice articles and summaries of every article are free without registration
The full text of Images in ... articles are free to registered users
Only fellows can access the full text of case reports (apart from Editor's Choice) - become a fellow today, or encourage your institution to, so that together we can grow and develop this resource
Don't forget to sign up for content alerts so you keep up to date with all the case reports as they are published, and let us know what you think by commenting on the Editor's blog
