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Updated: Jun 5, 2026

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

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Published on: March 21, 2013

Do outcomes of near syncope parallel syncope?

Shamai A Grossman1, Mathew Babineau, Laura Burke

  • 1Division of Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA. sgrossma@caregroup.harvard.edu

The American Journal of Emergency Medicine
|December 28, 2010
PubMed
Summary

Patients experiencing near syncope face similar risks of adverse outcomes as those with syncope. However, near-syncope patients are less likely to be admitted to the hospital.

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Area of Science:

  • Emergency Medicine
  • Cardiology
  • Clinical Outcomes

Background:

  • Limited data exists on evaluating emergency department (ED) patients with near syncope.
  • Near syncope is often excluded from syncope studies due to inconsistent definitions.

Purpose of the Study:

  • To determine the incidence of critical interventions or adverse outcomes in near-syncope patients.
  • To compare these outcomes with those of syncope patients.

Main Methods:

  • Prospective, observational study of adult ED patients presenting with near syncope.
  • Near syncope defined as feeling of impending loss of consciousness without actual syncope.
  • Adverse outcomes included hemorrhage, cardiac events, sepsis, stroke, death, and more.

Main Results:

  • Of 244 near-syncope patients, 20% experienced adverse outcomes or critical interventions.
  • This rate was similar to syncope patients (23%).
  • Near-syncope patients had lower admission rates (49%) compared to syncope patients (69%).

Conclusions:

  • Near-syncope patients have a similar risk of critical interventions and adverse outcomes as syncope patients.
  • Despite similar risks, near-syncope patients are less frequently admitted.
  • Further research is needed to optimize the management of near-syncope patients in the ED.