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Upright tilt test: correlation between results and patient clinical features
A F Folino1, G Buja, B Martini
1Department of Cardiology, University of Padua, Italy.
Pacing and Clinical Electrophysiology : PACE
|November 1, 1996
Summary
The upright tilt test is more accurate for diagnosing loss of consciousness in younger patients and during symptomatic periods. Clinical history significantly impacts test results, suggesting variability in autonomic nervous system activity.
Area of Science:
- Cardiology
- Neurology
- Autonomic Nervous System
Background:
- Recurrent syncope (loss of consciousness) and presyncope (near fainting) are common clinical issues.
- The upright tilt test (UTT) is a key diagnostic tool for evaluating these episodes.
- Understanding factors influencing UTT accuracy is crucial for effective patient management.
Purpose of the Study:
- To investigate how patient clinical history and characteristics affect upright tilt test outcomes.
- To identify specific patient subgroups or conditions where UTT is more or less sensitive.
Main Methods:
- A cohort of 745 patients with recurrent syncope/presyncope underwent UTT (60° for 45 min) and clinical evaluation.
- Cardiological and neurological examinations were normal in all participants.
- Data on patient age, gender, syncope frequency, and timing relative to testing were analyzed.
Main Results:
- Overall UTT positivity was 62%, higher in patients with syncope (70.2%) than presyncope (42.9%).
- Younger patients (<25 years) showed the highest UTT positivity (68.5%).
- Shorter intervals since the last episode and higher recent syncope frequency correlated with positive UTT results.
Conclusions:
- Upright tilt test sensitivity is influenced by patient age and the symptomatic period.
- Clinical factors like syncope frequency and recency of episodes are critical for interpreting UTT results.
- Findings highlight the dynamic nature of autonomic nervous system activity and its impact on diagnostic test utility.