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Related Concept Videos

Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

870
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
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Alterations in Blood Pressure01:30

Alterations in Blood Pressure

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Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...
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Indications, contraindications, and step-by-step methodology for performing carotid sinus massage in patients presenting with syncope : A scientific statement of an Ad Hoc Syncope Consortium endorsed by: the European Autonomic Society (EFAS), Gruppo Italiano Multidisciplinare Syncope (GIMSI) and European Geriatric Medicine Society (EuGMS).

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Related Experiment Video

Updated: Oct 20, 2025

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
14:09

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance

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Underlying hemodynamic differences are associated with responses to tilt testing.

Artur Fedorowski1,2, Giulia Rivasi3, Parisa Torabi4

  • 1Department of Clinical Sciences, Lund University, Malmö, Sweden. artur.fedorowski@med.lu.se.

Scientific Reports
|September 10, 2021
PubMed
Summary
This summary is machine-generated.

Younger patients with unexplained syncope who have lower resting blood pressure and heart rate are more likely to have a positive tilt test. This finding aids in diagnosing vasovagal reflex etiology.

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Area of Science:

  • Cardiology
  • Clinical Physiology

Background:

  • Unexplained syncope is a common clinical problem, often attributed to vasovagal reflex etiology.
  • Resting hemodynamic parameters may offer insights into autonomic nervous system function and predict syncope outcomes.

Purpose of the Study:

  • To investigate the association between resting hemodynamic parameters (systolic blood pressure, diastolic blood pressure, heart rate) and tilt test results in patients with suspected vasovagal syncope.
  • To identify demographic and hemodynamic predictors of a positive tilt test response.

Main Methods:

  • Analysis of a merged database of 5236 patients with suspected vasovagal syncope.
  • Comparison of demographic and resting hemodynamic data between tilt-positive and tilt-negative patient groups.
  • Logistic regression models used to assess the relationship between baseline parameters and tilt test outcomes.

Main Results:

  • Tilt-positive patients (60%) exhibited significantly lower systolic blood pressure (127.2 vs 129.7 mmHg), diastolic blood pressure (76.2 vs 77.7 mmHg), and heart rate (68.0 vs 70.5 bpm) compared to tilt-negative patients.
  • Multivariable analysis revealed that younger age, systolic blood pressure ≤ 128 mmHg, heart rate ≤ 69 bpm, and absence of hypertension were independently associated with a positive tilt test.

Conclusions:

  • In patients with suspected reflex syncope, specific resting hemodynamic profiles are linked to positive tilt test results.
  • Lower resting blood pressure and heart rate, along with younger age and absence of hypertension, are predictive of a positive tilt test, aiding in the diagnosis of vasovagal syncope.