ECG Changes and Voltage Attenuation in Congestive Heart Failure
Keywords:ECG, congestive heart failure, peripheral edema, body volume conductor, electrical impedance, diuresis, implantable cardioverter defibrillator, cardiac resynchronization therapy, QT intervals
The electrocardiogram (ECG) is invaluable in providing diagnosis, prognosis, and information for decision making in the management of patients with congestive heart failure (CHF). In addition to the traditional applications of the ECG, which are of importance in the management of patients with CHF, and include indeed the bulk of ECG derived information, a recently described association of peripheral edema with attenuated ECG voltage, provides an expanded dimension in diagnostics. These attenuations result in decreased amplitude of QRS complexes, P-waves, and shortened duration of QRS complexes and QT intervals, with significant diagnostic implications.Alleviation of peripheral edema in response to diuresis in patients with CHF reverses all above alterations.
LicenseAuthors who publish with this journal agree to the following terms:
a. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).