Abstract:
OBJECTIVES:This study was designed to evaluate possible interactions between digital mobile telephones and implanted pacemakers. BACKGROUND:Electromagnetic fields may interfere with normal pacemaker function. Development of bipolar sensing leads and modern noise filtering techniques have lessened this problem. However, it remains unclear whether these features also protect from high frequency noise arising from digital cellular phones. METHODS:In 39 patients with an implanted pacemaker (14 dual-chamber [DDD], 8 atrial-synchronized ventricular-inhibited [VDD(R)] and 17 ventricular-inhibited [VVI(R)] pacemakers), four mobile phones with different levels of power output (2 and 8 W) were tested in the standby, dialing and operating mode. During continuous electrocardiographic monitoring, 672 tests were performed in each mode with the phones positioned over the pulse generator, the atrial and the ventricular electrode tip. The tests were carried out at different sensitivity settings and, where possible, in the unipolar and bipolar pacing modes as well. RESULTS:In 7 (18%) of 39 patients, a reproducible interference was induced during 26 (3.9%) of 672 tests with the operating phones in close proximity (<10 cm) to the pacemaker. In 22 dual-chamber (14 DDD, 8 VDD) pacemakers, atrial triggering occurred in 7 (2.8%) of 248 and ventricular inhibition in 5 (2.8%) of 176 tests. In 17 VVI(R) systems, pacemaker inhibition was induced in 14 (5.6%) of 248 tests. Interference was more likely to occur at higher power output of the phone and at maximal sensitivity of the pacemakers (maximal vs. nominal sensitivity, 6% vs. 1.8% positive test results, p = 0.009). When the bipolar and unipolar pacing modes were compared in the same patients, ventricular inhibition was induced only in the unipolar mode (12.5% positive test results, p = 0.0003). CONCLUSION:Digital mobile phones in close proximity to implanted pacemakers may cause intermittent pacemaker dysfunction with inappropriate ventricular tracking and potentially dangerous pacemaker inhibition.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Naegeli B,Osswald S,Deola M,Burkart Fdoi
10.1016/0735-1097(96)00031-9subject
Has Abstractpub_date
1996-05-01 00:00:00pages
1471-7issue
6eissn
0735-1097issn
1558-3597pii
0735-1097(96)00031-9journal_volume
27pub_type
杂志文章abstract:OBJECTIVES:The purpose of this study was to determine whether intrinsic histological abnormalities of the pulmonary trunk (PT) are present from birth and interact with palliative surgery and/or repair. BACKGROUND:Little is known about PT histology in patients with tetralogy of Fallot (TOF), especially in the era of su...
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更新日期:2009-11-10 00:00:00
abstract::A large number of prosthetic heart valves (PHV) are being implanted in patients with both congenital and acquired valvular disease. Many of the recipients of such valves are women of childbearing age who desire to have children. The main issues involved with pregnancy in a patient with PHV include the selection of PHV...
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pub_type: 杂志文章,评审
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更新日期:2005-08-02 00:00:00
abstract:OBJECTIVES:This study sought to evaluate the associations between different measures of obesity and prevalent atherosclerosis in a large population-based cohort. BACKGROUND:Although obesity is associated with cardiovascular mortality, it is unclear whether this relationship is mediated by increased atherosclerotic bur...
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更新日期:2007-08-21 00:00:00
abstract::Tricuspid regurgitation is often not apparent on physical examination and several methods are now available to aid in this difficult assessment. Cardiac catheterization using right ventriculography, previously considered the diagnostic standard, has several limitations. Currently available noninvasive tools such as M-...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/s0735-1097(84)80294-6
更新日期:1984-06-01 00:00:00
abstract:OBJECTIVES:This study reevaluated the anatomy of the areas anterior and posterior to the atrioventricular (AV) septal structures, previously said to represent anterior and posterior septal areas. BACKGROUND:In descriptions of the locations of accessory AV pathways within the AV junctions, four regions have been recogn...
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doi:10.1016/0735-1097(94)90179-1
更新日期:1994-12-01 00:00:00
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doi:10.1016/s0735-1097(98)00627-5
更新日期:1999-03-01 00:00:00
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doi:10.1016/j.jacc.2006.10.050
更新日期:2007-02-13 00:00:00
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更新日期:2002-12-18 00:00:00
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更新日期:2018-06-12 00:00:00
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更新日期:2000-09-01 00:00:00
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更新日期:1998-06-01 00:00:00
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更新日期:2009-01-27 00:00:00
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journal_title:Journal of the American College of Cardiology
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doi:10.1016/S0735-1097(96)00455-X
更新日期:1996-12-01 00:00:00
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更新日期:1996-08-01 00:00:00
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更新日期:2000-11-15 00:00:00
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更新日期:1995-07-01 00:00:00
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更新日期:2012-05-01 00:00:00
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更新日期:2004-07-21 00:00:00
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更新日期:2017-09-05 00:00:00
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更新日期:1986-12-01 00:00:00
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更新日期:2013-10-22 00:00:00
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更新日期:2004-11-02 00:00:00
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更新日期:2013-01-15 00:00:00
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doi:10.1016/0735-1097(92)90314-d
更新日期:1992-05-01 00:00:00