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Related Concept Videos

Flow Table Test01:12

Flow Table Test

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The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side.
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
784

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Related Experiment Video

Updated: Feb 16, 2026

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

Published on: March 21, 2013

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Time has not passed for the tilt table test.

Jani Pirinen, Markku Walamies

    Duodecim; Laaketieteellinen Aikakauskirja
    |December 15, 2017
    PubMed
    Summary

    The tilt table test helps diagnose loss of consciousness and reflex syncope. In 2015, 30% of 133 patients showed abnormal upright tolerance, with mixed reaction syncope being most common.

    Area of Science:

    • Cardiology
    • Clinical Physiology

    Background:

    • The tilt table test is a diagnostic tool for evaluating loss of consciousness and understanding circulatory mechanisms in reflex syncope.
    • In 2015, all tilt table tests for the Hospital District of Helsinki and Uusimaa (HUS) were centralized at Peijas Hospital.

    Purpose of the Study:

    • To analyze the results of tilt table tests performed in 2015 within the HUS.
    • To characterize the mechanisms and prevalence of syncope in patients undergoing the tilt table test.

    Main Methods:

    • Retrospective analysis of medical history, circulation monitor printouts, and medical reports from 133 patients who underwent tilt table testing in 2015.
    • Classification of positive tilt tests using the VASIS classification and recording the time to loss of consciousness.

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    Main Results:

    • Abnormal upright tolerance was identified in 30% of the patients.
    • The average time to loss of consciousness was 35.2 minutes.
    • The most frequent syncope mechanism was mixed reaction (60.0%), followed by vasovagal reaction (22.5%), cardioinhibitory reaction (10.0%), and lacking stroke volume response (7.5%).

    Conclusions:

    • Referral practices for tilt table testing exhibit variability across HUS units.
    • The observed incidence of cardioinhibitory reactions in this study was lower compared to previous research.