Walter T. McNicholas

ORCID: 0000-0001-5927-2738
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About
Contact & Profiles
Research Areas
  • Obstructive Sleep Apnea Research
  • Neuroscience of respiration and sleep
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Tracheal and airway disorders
  • Cardiovascular and Diving-Related Complications
  • Respiratory Support and Mechanisms
  • Sleep and Wakefulness Research
  • Sleep and Work-Related Fatigue
  • Sleep and related disorders
  • Asthma and respiratory diseases
  • Cardiovascular Disease and Adiposity
  • Fatty Acid Research and Health
  • Airway Management and Intubation Techniques
  • Clinical practice guidelines implementation
  • Non-Invasive Vital Sign Monitoring
  • Delphi Technique in Research
  • Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Restless Legs Syndrome Research
  • Voice and Speech Disorders
  • Regulation of Appetite and Obesity
  • Dysphagia Assessment and Management
  • Heart Rate Variability and Autonomic Control
  • Gastroesophageal reflux and treatments
  • Pleural and Pulmonary Diseases
  • Inhalation and Respiratory Drug Delivery

University College Dublin
2016-2025

St. Vincent's University Hospital
2016-2025

Saint Vincent's Catholic Medical Center
1985-2022

First Affiliated Hospital of Guangzhou Medical University
2017-2020

Guangzhou Medical University
2017-2020

State Key Laboratory of Respiratory Disease
2018

University of Palermo
2010-2017

The First Affiliated Hospital, Sun Yat-sen University
2016

Fudan University
2016

Sun Yat-sen University
2016

The Standards for the Diagnosis and Treatment of Patients with COPD document 2004 updates position papers on chronic obstructive pulmonary disease (COPD) published by American Thoracic Society (ATS) European Respiratory (ERS) in 1995 1, 2. Both societies felt need to update previous documents due following. 1) prevalence overall importance as a health problem is increasing. 2) There have been enough advances field require an update, especially adapted particular needs ATS/ERS constituency....

10.1183/09031936.04.00014304 article EN European Respiratory Journal 2004-06-01

Obstructive sleep apnea syndrome (OSAS), characterized by intermittent hypoxia/reoxygenation (IHR), is an independent risk factor for cardiovascular disease. We investigated the underlying molecular mechanisms of this association in a translational study.In novel vitro model IHR, we used HeLa cells transfected with reporter constructs and DNA binding assays master transcriptional regulators inflammatory adaptive pathways (NFkappaB HIF-1, respectively) to investigate events initiated repeated...

10.1161/circulationaha.105.556746 article EN Circulation 2005-10-25

Grading the strength of recommendations and quality underlying evidence enhances usefulness clinical practice guidelines. Professional societies other organizations, including American Thoracic Society (ATS), should reach consensus about whether they will use one common grading system which numerous systems would apply across all The profusion guideline confuses consumers guidelines, undermines value exercise in conveying a transparent message. In response to this dilemma, international...

10.1164/rccm.200602-197st article EN American Journal of Respiratory and Critical Care Medicine 2006-08-24

Background: Circulating nuclear factor-κB (NF-κB)–dependent genes, particularly tumor necrosis factor-α (TNF-α), are elevated in obstructive sleep apnea syndrome (OSAS) and likely contribute to cardiovascular disease. Furthermore, TNF-α is associated with excessive daytime sleepiness. We investigated the predictors of related genes large, well-selected cohorts subjects OSAS control subjects.Methods: performed a prospective study 30 who did not have (22 nonsleepy normal 8 sleepy nonapneic...

10.1164/rccm.200601-066oc article EN American Journal of Respiratory and Critical Care Medicine 2006-07-14

Abstract Obstructive sleep apnoea syndrome (OSAS) is a highly prevalent disease and recognised as major public health burden. Large-scale epidemiological studies have demonstrated an independent relationship between OSAS various cardiovascular disorders. The pathogenesis of complications in not completely understood but multifactorial aetiology likely. Inflammatory processes emerged critical the atherosclerosis at all stages atheroma formation. Increased levels circulating markers...

10.1136/thx.2008.105577 article EN Postgraduate Medical Journal 2009-06-26

The complexity of central breathing disturbances during sleep has become increasingly obvious. They present as apnoeas (CSAs) and hypopnoeas, periodic with apnoeas, or irregular in patients cardiovascular, other internal neurological disorders, can emerge under positive airway pressure treatment opioid use, at high altitude. As yet, there is insufficient knowledge on the clinical features, pathophysiological background consecutive algorithms for stepped-care treatment. Most recently, it been...

10.1183/13993003.00959-2016 article EN European Respiratory Journal 2016-12-05

This article is aimed at addressing the current state-of-the-art in epidemiology, pathophysiology, diagnostic procedures and treatment options for appropriate management of obstructive sleep apnoea (OSA) cardiovascular (in particular hypertensive) patients, as well diseases arterial hypertension) OSA patients. The present document result work performed by a panel experts participating European Union COST (Cooperation Scientific Technological research) Action B26 on OSA, with endorsement...

10.1183/09031936.00226711 article EN European Respiratory Journal 2013-02-08

The possible role of high nasal airway resistance in the pathogenesis obstructive sleep apnea has been examined 7 patients with seasonal (ragweed) allergic rhinitis, a naturally occurring model reversible obstruction. Measurements and overnight polysomnographic studies were performed during ragweed season when complained obstruction; 6 to 8 wk later symptoms had subsided (control study). During symptomatic phase, mean (+/- SE) was 4.9 +/- 0.8 cm H2O/L/s, experienced 1.7 0.3 apneas per hour...

10.1164/arrd.1982.126.4.625 article EN PubMed 1982-10-01

Section:ChooseTop of pageAbstract <<ROLE OF SYSTEMIC INFLAMMA...CARDIOVASCULAR DISEASE IN...EPIDEMIOLOGICAL CONSIDERA...PATHOPHYSIOLOGY SLEEP-...OVERLAPPING MECHANISMS OF...FUTURE RESEARCH DIRECTION...ReferencesCITING ARTICLES

10.1164/rccm.200903-0347pp article EN American Journal of Respiratory and Critical Care Medicine 2009-07-24

This article is aimed at addressing the current state of art in epidemiology, pathophysiology, diagnostic procedures and treatment options for appropriate management obstructive sleep apnea (OSA) cardiovascular (particularly hypertensive) patients, as well diseases arterial hypertension) OSA patients. The present document result work done by a panel experts participating European Union COST (COoperation Scientific Technological research) ACTION B26 on OSA, with endorsement Respiratory...

10.1097/hjh.0b013e328350e53b article EN Journal of Hypertension 2012-03-09

We studied the effect of supplemental nocturnal oxygen on blood gases in 15 patients with severe but stable chronic obstructive lung disease (ratio forced expired volume one second to vital capacity, 37.2 +/- 1.8 [mean S.E.] per cent predicted; arterial tension, 50.7 1.4 mm Hg; and carbon dioxide tension [PCO2], 53.1 1.5 Hg). Sleep variables measures gas exchange were determined two consecutive nights; first night subjects breathed oxygen, they room air. Transcutaneous PCO2 was measured an...

10.1056/nejm198402163100704 article EN New England Journal of Medicine 1984-02-16

Summary The European Sleep Research Society aimed to estimate the prevalence, determinants and consequences of falling asleep at wheel. In total, 12 434 questionnaires were obtained from 19 countries using an anonymous online questionnaire that collected demographic sleep‐related data, driving behaviour, history drowsy accidents. Associations quantified multivariate logistic regression. average prevalence wheel in previous 2 years was 17%. Among respondents who fell asleep, median accidents...

10.1111/jsr.12267 article EN Journal of Sleep Research 2015-01-12
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