In terms of specific arrhythmias, sinus tachycardia is the most frequently seen arrhythmia, with supraventricular. tachycardia being the next most common, followed by sinus bradycardia (Hanash, 2010). Reentrant tachycardia is. common in infants and children with congenital heart disease (CHD). Some arrhythmias in the early post operative period like premature atrial contractionâs (PACâs) and premature ventricular beats (bigeminy) are usually transient and well tolerated. Others like junctional ectopic tachycardia (J ET) a nd atrial flutter may cause significant
Twitter was created in March 2006 by Jack Dorsey, Evan Williams, Biz Stone and Noah Glass and launched by July 2006. The service rapidly gained worldwide popularity, with more than 100 million users who in 2012 posted 340 million tweets per day.
How Twitter's owners and top executives say Twitter was founded is different from how Twitter was actually founded. Mainly, the official version leaves out the role of a major co-founder. Some early Twitter investors also wonder if it also leaves out a scandal.