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Duration of the P Wave and P Wave Dispersion in Subclinical Hyperthyroidism

Endocrine Practice, 2003
To determine whether the values for P wave dispersion (Pdis) and adjusted Pdis, which are simple noninvasive electrocardiographic markers to detect paroxysmal atrial fibrillation, differ in patients with endogenous subclinical hyperthyroidism in comparison with those in healthy control subjects.We measured the maximal P wave duration and the difference
Berrin, Cetinarslan   +5 more
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The Revenge of the P Wave

Journal of Cardiovascular Electrophysiology
In this review of "P-wave alternans rebound following pulmonary vein isolation predicts atrial arrhythmia recurrence," we examine a study performed by Nearing et al in the use of P-wave morphology, as a predictor of A-Fib recurrence. Patients who underwent pulmonary vein isolation, had pre and post-procedural ecgs performed specifically to monitor P ...
Thomas M. Kutner, Peter R. Kowey
openaire   +2 more sources

P-Wave Duration and P-Wave Dispersion in Patients with Dilated Cardiomyopathy

European Journal of Heart Failure, 2004
Abstract Background P-wave dispersion (PWD) has been reported to be associated with inhomogeneous and discontinuous propagation of sinus impulses. In the present study, we aimed to investigate PWD in patients with dilated cardiomyopathy.
Kubilay, Senen   +6 more
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Computer detection of P-waves

Computers and Biomedical Research, 1976
Abstract Two algorithms are presented for the detection of P-waves in ECG's. The method is in principle lead-independent. The first routine for the finding of coupled P-waves makes use of the stability of PR-intervals. The second one, for the detection of noncoupled P's, computes the cross-correlation between a ternary detection signal, derived from ...
S J, Hengeveld, J H, Bemmel
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Duration of the normal P wave

The American Journal of Cardiology, 1959
Abstract Accurate use of the P wave in electrocardiographic measurernent and in electrocardiographic timing of physiologic events requires prior study in each individual to determine the lead with the maximal P wave duration. Magnification of electrocardiographic waves is useful to determine their duration.
C A, CACERES, G A, KELSER
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Studies in P wave synchronization

The American Journal of Cardiology, 1967
Abstract The results of P wave synchronization in man employing a bipolar atrial and a bipolar ventricular catheter have been presented. As the P-ventricular stimulus interval is increased, a ventricular rhythm with retrograde P waves and a re-entry mechanism was found.
P, Samet, C, Castillo, W H, Bernstein
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Non–Conducted P Waves

American Journal of Critical Care, 2003
Scenario: The following ECG waveform was obtained in an 85-year-old male patient admitted to the telemetry unit for evaluation of syncope. His pertinent medical history includes hypertension, coronary artery disease, and prior inferior/lateral myocardial infarction (MI).
Michele M, Pelter, Mary G, Adams
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The P wave

1979
As already stated in Part 1, clinical interpretation of the electrocardiogram begins with the study of the P wave.
openaire   +1 more source

P Wave in the Electrocardiogram of the Horse

American Journal of Veterinary Research, 1970
SUMMARY Orthogonal electrocardiograms, using the McFee axial reference system, were obtained from fifty 2-year-old Thoroughbred horses. The bifid P waves were analyzed for duration and peak amplitude of initial (I) and terminal (II) components and for orientation and spatial magnitude (sM) of peak vectors.
R L, Hamlin   +3 more
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“Dome and Dart” P Waves

Southern Medical Journal, 1978
P waves with a "dome and dart" configuration have been observed in patients with congenital and acquired heart disease while having arrhythmias of left atrial origin. This report describes a patient who has dome and dart P waves that appear to be neither ectopic nor associated with structural heart disease.
openaire   +2 more sources

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