Noninvasive Diagnosis of Partial Atrial Standstill Using Magnetocardiograms.
نویسندگان
چکیده
منابع مشابه
Noninvasive diagnosis of partial atrial standstill using magnetocardiograms.
A 59-year-old woman with partial atrial standstill was studied using magnetocardiograms (MCGs), which revealed through QRS-T subtraction and time-frequency analysis that there was a high-frequency (6 Hz) magnetic source at the low atrial septum. MCGs are useful for noninvasively evaluating the clinical course of patients with atrial fibrillation.
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The present study investigated whether magnetocardiograms (MCGs) could noninvasively detect the His potential. In 22 patients, the His - ventricular (HV) intervals in MCGs (64-channel system, 2-min signal averaging, filter: 0.1-100 Hz, and band-eliminating filter of 50 Hz) were compared with those recorded in an electrophysiologic study (EPS, filter: 30-400 Hz). In 14 of the patients (64 %), th...
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AIMS We analysed the cardiac magnetic fields on the body surface to visualize electrical currents noninvasively during reentrant arrhythmias. METHODS AND RESULTS Seven patients with counterclockwise atrial flutter (AFL) were studied during 17 episodes of AFL using 64-channel magnetocardiograms (MCGs) and electrophysiological study. Eight of the episodes were paroxysmal AFL, in which MCGs were...
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A 37-year-old male patient was referred to our cardiology division with a longstanding and worsening history of short episodes of dizziness and reduced effort tolerance. He denied any syncope, palpitations or chest pain. His medical history was unremarkable and he took no medication. Family history was negative for cardiac diseases at a young age or premature sudden death. On clinical examinati...
متن کاملPersistent right atrial standstill.
An asymptomatic patient with cardiomegaly caused by isolated right atrial standstill is reported. The right atrium showed no evidence of contraction on pressure records or angiographically, while the left atrium functioned normally.
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ژورنال
عنوان ژورنال: Circulation Journal
سال: 2002
ISSN: 1346-9843,1347-4820
DOI: 10.1253/circj.66.1178