What is the optimal duration of tilt testing for the assessment of patients with suspected postural tachycardia syndrome?
| Autor: | Aine Costelloe, Christine Sheehy, Sheila Carew, Declan Lyons, John Cooke, Teresa Donnelly, M O'Connor |
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| Rok vydání: | 2009 |
| Předmět: |
Adult
Male Tachycardia medicine.medical_specialty Time Factors Orthostatic intolerance Hypotension Orthostatic Postural Orthostatic Tachycardia Syndrome Tilt-Table Test Physiology (medical) Prevalence Syncope Vasovagal medicine Humans Prospective Studies Prospective cohort study Vasovagal syncope Retrospective Studies business.industry Case-control study Retrospective cohort study medicine.disease Surgery Postural tachycardia Case-Control Studies Anesthesia Orthostatic Intolerance Female medicine.symptom Cardiology and Cardiovascular Medicine business Tilt (camera) |
| Zdroj: | Europace. 11:635-637 |
| ISSN: | 1532-2092 1099-5129 |
| Popis: | Aims The aim of this study is to define the optimal duration of tilt testing for the assessment of patients with suspected postural tachycardia syndrome (POTS). Methods and results This was a case–control study. Cases were identified retrospectively from a database of patients referred with orthostatic intolerance (OI). All met the diagnostic criteria for POTS. Controls were enrolled prospectively. All subjects underwent tilting to 70° for 40 min if tolerated. Continuous monitoring was provided by a Finometer. Analysis of responses to tilting was performed on 28 cases and 28 controls. The mean age in the case group was 23.6 and in the control group was 26.2. The majority was female in both groups (cases = 4F:3M, controls = 2F:1M). All cases met the criteria for POTS within 7 min of orthostasis. No controls demonstrated a sustained tachycardia. The prevalence of vasovagal syncope (VVS) was 36% in cases vs. 7% in controls ( P = 0.02) and 25% in the remaining patients ( n = 233) on the OI database ( P = 0.259). Conclusion A 10 min tilt will diagnose POTS in the majority of patients. It will not, however, be sufficient to identify the overlap that exists between POTS and VVS. The optimal duration of tilt testing in patients suspected of POTS is 40 min. |
| Databáze: | OpenAIRE |
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