Results 71 to 80 of about 84,351 (216)

Tilt Table Testing in Paediatric Orthostatic Intolerance: Is 10 Min Long Enough?

Journal of Paediatrics and Child Health, EarlyView.
ABSTRACT Aim Recent cardiovascular literature suggests that orthostatic testing protocols should be tailored according to diagnostic purpose, distinguishing syncope evaluation from assessment of autonomic dysfunction in chronic orthostatic intolerance (COI).
Wonshik Choi, Sin Weon Yun
wiley   +1 more source

Orthostatic intolerance and presyncopal states in young adults

Journal of Education, Health and Sport
Introduction and purpose: Orthostatic intolerance is an increasingly recognized disturbance of circulatory regulation in young adults, particularly in academic settings where characteristic lifestyle patterns promote autonomic imbalance. The aim of this
Michał Karol, Kamila Koseska, Jan Borowicz, Bartosz Górecki, Kinga Kloch, Patryk Romaniuk, Mariia-Khrystyna Lohin, Aleksandra Strawińska, Małgorzata Bednarczyk   +8 more
doaj   +1 more source

Internal Jugular Vein as an Alternative Access for Pacemaker Implantation: A Mostly Left IJ Case Series

Pacing and Clinical Electrophysiology, EarlyView.
ABSTRACT Background Leadless pacemakers traditionally rely on femoral venous access, which may be limited in patients with unfavorable IVC anatomy, prior interventions, or situations where preserving femoral access is preferred. Internal jugular (IJ) access offers an alternative route, but real‐world data on IJ implantation of single‐ and dual‐chamber ...
Maya Asami Takagi, William Leon, Colin Mackenzie, Daniel Cortez   +3 more
wiley   +1 more source

Low Sensitivity of Abbreviated Tilt Table Testing for Diagnosing Postural Tachycardia Syndrome in Adults With ME/CFS

Frontiers in Pediatrics, 2018
Introduction: Orthostatic intolerance is common among individuals with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). In some ME/CFS case definitions, orthostatic intolerance is considered a core feature of the disorder.
C. (Linda) M. C. van Campen, Peter C. Rowe, Frans C. Visser   +2 more
doaj   +1 more source

Individuals with persisting post‐concussion symptoms with physiological subtype demonstrate altered cardiovascular and autonomic responses to face cooling

Experimental Physiology, EarlyView.
Abstract Individuals with persisting post‐concussion symptoms with physiological subtype (PPCS‐P) demonstrate exercise intolerance due to exacerbation of concussion‐like symptoms during incremental exercise. We tested the hypothesis that individuals with PPCS‐P (n = 12) would have a blunted cardiac autonomic response to face cooling compared to healthy
Phillip J. Wallace, Steve Lidstone, Josh G. Nowlan, Johnathan Ljubanovich, Brandon J. McKinlay, Stephen A. Klassen, Stephen S. Cheung   +6 more
wiley   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source

Orthostatic intolerance after space flight [PDF]

The Journal of Physiology, 2002
Physiologists have always been challenged by the adjustments of the human body to hostile environments. The set of papers in this issue of The Journal of Physiology (Cox et al. 2002; Ertl et al. 2002; Levine et al. 2002) fits into the tradition of the study of human responses to extreme physical circumstances.
Wieling, Wouter, Halliwill, John R., Karemaker, John M.   +2 more
openaire   +2 more sources

No evidence of higher peak heat tolerance in the afternoon or with opportunity for thermal behaviour during low‐intensity work in uncompensable heat

Experimental Physiology, EarlyView.
Abstract Heat tolerance is known to be limited by high brain temperature, but most findings pertain to strenuous exercise following artificially altered baseline temperature or with limited opportunity for behaviour. Therefore, we investigated the hypotheses that thermal perceptions, hyperventilation and cerebrovascular responses would be exacerbated ...
Tiarna Stothers, Travis Dylan Gibbons, Kate Nicole Thomas, Emma Jones, Holly Ann Campbell, James David Cotter   +5 more
wiley   +1 more source

The effects of bed rest on cardiometabolic health: A systematic review and meta‐analysis

Experimental Physiology, EarlyView.
Abstract Horizontal bed rest (HBR) and head‐down tilt (HDT) are models of physical inactivity. In this systematic review and meta‐analysis, we aimed to quantify changes in cardiometabolic outcomes during HBR and HDT in healthy adults. Following the PRISMA guidelines, we searched PubMed, Scopus, Web of Science and Cochrane Library until 1 October 2025 ...
Konstantinos Prokopidis, Tyler Daubrah‐Scott, Alyssa Varanoske, Jordi Morwani‐Mangnani, David D. Church, Colleen S. Deane, Bethan E. Phillips, Emily J. Arentson‐Lantz   +7 more
wiley   +1 more source

The Postural Tachycardia Syndrome (POTS): Pathophysiology, Diagnosis & Management [PDF]

, 2006
Postural tachycardia syndrome (POTS), characterized by orthostatic tachycardia in the absence of orthostatic hypotension, has been the focus of increasing clinical interest over the last 15 years 1. Patients with POTS complain of symptoms of tachycardia,
Satish R Raj, Raj, Satish R
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