F54. Food intake can significantly influence tilt table test results in patients with postural orthostatic tachycardia syndrome

Postural orthostatic tachycardia syndrome (POTS) is a heterogeneous autonomic disorder characterised by orthostatic intolerance and a rise in heart rate by at least 30 bpm or an absolute heart rate value of at least 120 bpm within 10 min of standing or during a tilt table test. Overwhelmingly, POTS affects young Caucasian women, which can lead physicians to miss the diagnosis in men or non-white patients. We describe a case of 29-year-old African-American man who developed lightheadedness, generalised weakness, tachycardia and palpitations and was subsequently diagnosed with POTS. We review its clinical features, differential diagnosis, pathophysiology and treatment options. We also emphasise that POTS should be considered as a differential diagnosis in any patient presenting with typical clinical features, who may not be in the usual demographics of the disorder.

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Randomized double-blind, placebo-controlled trial of oral atenolol in patients with unexplained syncope and positive upright tilt table test results

American Heart Journal ◽

10.1016/0002-8703(95)90150-7 ◽

1995 ◽

Vol 130 (6) ◽

pp. 1250-1253 ◽

Cited By ~ 113

Author(s):

Nithi Mahanonda ◽

Kiertijai Bhuripanyo ◽

Charuwan Kangkagate ◽

Kanchana Wansanit ◽

Bang-on Kulchot ◽

...

Keyword(s):

Controlled Trial ◽

Test Results ◽

Tilt Table Test ◽

Tilt Table ◽

Double Blind ◽

Double Blind Placebo ◽

Unexplained Syncope ◽

Upright Tilt

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Improvement of hyperadrenergic postural orthostatic tachycardia syndrome (POTS) with methylated B vitamins in the setting of a heterozygous COMT Val158Met polymorphism

BMJ Case Reports ◽

10.1136/bcr-2021-245012 ◽

2021 ◽

Vol 14 (11) ◽

pp. e245012

Author(s):

Nikita Mittal ◽

Ariel Portera ◽

Pam Taub

Keyword(s):

Conventional Treatment ◽

Clinical Symptoms ◽

B Vitamins ◽

Postural Orthostatic Tachycardia Syndrome ◽

Tilt Table Test ◽

Tilt Table ◽

Comt Val158met ◽

Val158met Polymorphism ◽

Aged Woman ◽

Middle Aged Woman

A middle-aged woman was diagnosed with postural orthostatic tachycardia syndrome based on her clinical symptoms, elevated norepinephrine levels and positive tilt-table test. The patient was refractory to conventional treatment and improved only after she was treated with methylated B vitamins for her heterozygous catechol-O-methyltransferase Val158Met polymorphism.

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Reproducibility of Head Upright Tilt Table Test Results in Patients with Syncope

Pacing and Clinical Electrophysiology ◽

10.1111/j.1540-8159.1992.tb02921.x ◽

1992 ◽

Vol 15 (10) ◽

pp. 1477-1481 ◽

Cited By ~ 78

Author(s):

BLAIR P. GRUBB ◽

DOUGLAS WOLFE ◽

PETER TEMESY-ARMOS ◽

HARRY HAHN ◽

LAURA ELLIOTT

Keyword(s):

Test Results ◽

Tilt Table Test ◽

Tilt Table ◽

Upright Tilt

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Head-up tilt table test in differentiating neuropathic versus hyperadrenergic postural orthostatic tachycardia syndrome

Journal of the Neurological Sciences ◽

10.1016/j.jns.2015.08.688 ◽

2015 ◽

Vol 357 ◽

pp. e199

Author(s):

L. Crnosija ◽

M. Krbot Skoric ◽

I. Adamec ◽

M. Lovric ◽

A. Junakovic ◽

...

Keyword(s):

Postural Orthostatic Tachycardia Syndrome ◽

Tilt Table Test ◽

Tilt Table ◽

Head Up Tilt

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Orthostatic symptoms does not always manifest during tilt-table test in pediatric postural orthostatic tachycardia syndrome patients

Korean Journal of Pediatrics ◽

10.3345/kjp.2013.56.1.32 ◽

2013 ◽

Vol 56 (1) ◽

pp. 32 ◽

Cited By ~ 1

Author(s):

Tae-Eon Huh ◽

Jung Sook Yeom ◽

Young-Soo Kim ◽

Hyang-Ok Woo ◽

Ji Sook Park ◽

...

Keyword(s):

Postural Orthostatic Tachycardia Syndrome ◽

Tilt Table Test ◽

Tilt Table ◽

Orthostatic Symptoms

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Anthropometric characteristics and tilt table test results

European Heart Journal ◽

10.1053/euhj.2002.3268 ◽

2002 ◽

Vol 23 (23) ◽

pp. 1886

Author(s):

H Koch

Keyword(s):

Test Results ◽

Tilt Table Test ◽

Tilt Table ◽

Anthropometric Characteristics

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ID 5 – Head-up tilt table test in differentiating neuropathic from hyperadrenergic type of postural orthostatic tachycardia syndrome (POTS)

Clinical Neurophysiology ◽

10.1016/j.clinph.2015.11.219 ◽

2016 ◽

Vol 127 (3) ◽

pp. e66

Author(s):

L. Crnosija ◽

M. Krbot Skoric ◽

I. Adamec ◽

A. Mišmaš ◽

V. Miletić ◽

...

Keyword(s):

Postural Orthostatic Tachycardia Syndrome ◽

Tilt Table Test ◽

Tilt Table ◽

Head Up Tilt

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Tilt Table Test for Interface Shear Resistance Between Flowlines and Soils

Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops ◽

10.1115/omae2003-37499 ◽

2003 ◽

Cited By ~ 9

Author(s):

Shadi S. Najjar ◽

Robert B. Gilbert ◽

Eric A. Liedtke ◽

Bill McCarron

Keyword(s):

Shear Resistance ◽

Test Method ◽

Shear Stresses ◽

Test Results ◽

Tilt Table Test ◽

Tilt Table ◽

Interface Shear ◽

Effective Normal Stress ◽

System A ◽

Loading System

This paper describes a tilt table test method for measuring the shear resistance between flowlines and supporting soils. This shear resistance is important in considering buckling and walking in the design of flowlines. A significant challenge in measuring the shear resistance is the very low effective normal stresses that exist at the interface in field conditions. Since the measured stresses will be small, even small amounts of friction in a test device can adversely affect the results. The tilt table method overcomes this problem by using gravity to apply the normal and shear stresses to the soil-flowline interface, eliminating the need for a mechanical loading system. A set of test results is presented to demonstrate how the test method can be used to measure the resistance between the flowline and the soil. These results illustrate that the type of flowline coating and the effective normal stress affect the shear resistance.

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