| Duration of head-up tilt test for patients with suspected vasovagal syncope. | |
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MedLine Citation:
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PMID: 21357590 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: To investigate the appropriate duration of head-up tilt test (HUTT) needed to induce a positive reaction in patients with suspected vasovagal syncope. METHODS AND RESULTS: Consecutive patients referred to the syncope unit of our centre for recurrent unexplained syncope were studied. The HUTT included a 30 min passive basic phase and a 20 min sublingual nitroglycerin provocation phase if syncope did not develop during the passive phase. We studied 773 consecutive patients, and 427 (55.2%) patients had a positive HUTT, including 46 patients (10.8%) during the passive basic phase and 381 patients (89.2%) during the nitroglycerin provocation phase. During the basic phase, positive reaction appeared at 7.5 min, and the percentage of positive cases increased with the duration of the test, reaching a peak (20.9%) at 22.5 min, and then decreasing gradually. Most positive reactions (96.1%) occurred between 10 and 25 min during the basic phase. During the nitroglycerin provocation phase, however, the percentage of positive reactions increased rapidly after sublingual nitroglycerin, peaking (35.7%) at 10 min, followed by a sharp decline. Most positive reactions (96.1%) occurred in the first 15 min of the provocation phase. CONCLUSION: The HUTT was a useful diagnostic test in patients with suspected vasovagal syncope, and sublingual nitroglycerin increased the rate of positive reactions. The appropriate duration for HUTT required at least 25 min during the passive basic phase and 15 min during the nitroglycerin provocation phase. |
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Authors:
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Jun Liu; Pihua Fang; Yue Liu; Guoying Lu; Zhi Li; Xiaofeng Li; Yushan Wang |
Publication Detail:
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Type: Journal Article Date: 2011-02-25 |
Journal Detail:
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Title: Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology Volume: 13 ISSN: 1532-2092 ISO Abbreviation: Europace Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-30 Completed Date: 2011-08-11 Revised Date: 2011-12-23 |
Medline Journal Info:
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Nlm Unique ID: 100883649 Medline TA: Europace Country: England |
Other Details:
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Languages: eng Pagination: 576-80 Citation Subset: IM |
Affiliation:
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Cardiac Function Test Center, Peking Union Medical College and Chinese Academy of Medical Sciences, 167 North Lishi Road, Xicheng State, Beijing, 100037 China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Child Female Humans Male Middle Aged Nitroglycerin / diagnostic use Retrospective Studies Syncope, Vasovagal / diagnosis*, physiopathology* Tilt-Table Test / methods* Time Factors Vasodilator Agents / diagnostic use Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Vasodilator Agents; 55-63-0/Nitroglycerin |
| Comments/Corrections | |
Comment In:
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Europace. 2011 Dec;13(12):1802
[PMID:
21712268
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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