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E800 Railway accident involving collision with rolling stock; E801 Railway accident involving collision with other object; Excludes: Collision with: aircraft (E840-E842) or motor vehicle (E810.-, E820-E822)
The mainstay of diagnosis of short QT syndrome is the 12-lead ECG. The precise QT duration used to diagnose the condition remains controversial with consensus guidelines giving cutoffs varying from 330 ms, [12] 340 ms or even 360 ms when other clinical, familial, or genetic factors are present.
It is necessary for most users of the CPT code (principally providers of services) to pay license fees for access to the code. [19] In the past, AMA offered a limited search of the CPT manual for personal, non-commercial use on its web site. [20] CPT codes can be looked up on the AAPC (American Academy of Professional Coders) website. [21]
Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1]
In 1982, after much work and debate, the UB-82 emerged as the endorsed national uniform bill. After an 8-year moratorium on change, the UB-82 was replaced by UB-92, and became the standard for billing paper institutional medical claims in the United States, until creation of the UB-04.
Research in the late 2000s has linked this finding to ventricular fibrillation, particularly in those who have fainted or have a family history of sudden cardiac death. [5] [6] [7] Although there is a significant relationship between ventricular fibrillation and some early repolarization's patterns, the overall lifetime occurrence of idiopathic ventricular fibrillation is exceptionally rare. [8]
Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [ 5 ] using electrodes placed on the skin.
SAECG recording yields a single, averaged QRS potential, usually printed in a much larger scale than standard ECGs, upon which the SAECG software performs calculations to reveal small variations (typically 1-25 uV) in the final portion of the QRS complex (the so-called "late potentials, or more accurately, "late ventricular potentials").