Syncope of Unknown Origin After Electrophysiologic Study and Head-Up Tilt Test: How Useful is an Implantable Loop Recorder?
Syncope is a frequent disorder that can be due to very different etiologies. The etiologic diagnosis of syncope is a complex task. In most of the series in the literature, in 40%–60% [1, 2] of patients the etiology of syncope remains unknown. In most patients, the anamnesis, physical examination and baseline ECG are the most helpful tools in diagnosing the etiology of syncope . In patients in whom the etiology of syncope remains unknown after the initial clinical evaluation, many different additional tests can be performed.
KeywordsNormal Sinus Rhythm Structural Heart Disease Syncopic Episode Sinus Arrest Unexplained Syncope
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Kapoor WN, Karpf M, Wieand S, Peterson J, Levey GS (1983) A prospective evaluation and follow-up of patients with syncope. N Engl J Med 309:197–204PubMedCrossRefGoogle Scholar
Solverstein MD, Singer DE, Mulley AG, Thibault GE, Barnett GO (1982) Patients with syncope admitted to medical intensive care units. JAMA 248:1185–1189CrossRefGoogle Scholar
Gibson TC, Heitzman MR (1984) Diagnostic efficacy of 24 hours electrocardiographic monitoring for syncope. Am J Cardiol 53:1013–1017PubMedCrossRefGoogle Scholar
Klein GJ, Gersh BJ, Yee R (1995) Electrophysiological testing. The final court of appeal for diagnosis of syncope? Circulation 92:1332–1335PubMedCrossRefGoogle Scholar
Kenny RA, Ingram A, Bayliss J, Sutton R (1986) Head-up tilt: a useful test for investigating unexplained syncope. Lancet 1:1352–1354PubMedCrossRefGoogle Scholar
Benditt DG, Ferguson DW, Grubb BP, Kapoor WN, Kugler J, Lerman BB et al (1996) ACC expert consensus document. Tilt table for assessing syncope. J Am Coll Cardiol 28:263–275PubMedCrossRefGoogle Scholar
Linzer M, Pritchett ELC, Pontinen M, McCarthy E, Divine GW (1990) Incremental diagnostic yield of loop electrocardiographic recorders in unexplained syncope. Am J Cardiol 66:214–219PubMedCrossRefGoogle Scholar
Krahn AD, Klein GJ, Yee R, Takle-Newhouse T, Norris C (1999) Use of an extended monitoring strategy in patients with problematic syncope. Circulation 99:406–410PubMedCrossRefGoogle Scholar
© Springer-Verlag Italia 2000