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Hyperventilation

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https://www.readbyqxmd.com/read/28624698/brief-mindfulness-training-de-couples-the-anxiogenic-effects-of-distress-intolerance-on-reactivity-to-and-recovery-from-stress-among-deprived-smokers
#1
Rotem Paz, Ariel Zvielli, Pavel Goldstein, Amit Bernstein
OBJECTIVE: We tested whether mindfulness de-couples the expected anxiogenic effects of distress intolerance on psychological and physiological reactivity to and recovery from an anxiogenic stressor among participants experimentally sensitized to experience distress. METHOD: N = 104 daily smokers underwent 18-hours of biochemically-verified smoking deprivation. Participants were then randomized to a 7-min analogue mindfulness intervention (present moment attention and awareness training; PMAA) or a cope-as-usual control condition; and subsequently exposed to a 2...
June 2, 2017: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/28619295/effects-of-massage-therapy-on-anxiety-depression-hyperventilation-and-quality-of-life-in-hiv-infected-patients-a-randomized-controlled-trial
#2
Reychler Gregory, Caty Gilles, Arcq Aude, Lebrun Laurie, Belkhir Leïla, Yombi Jean-Cyr, Marot Jean-Christophe
INTRODUCTION: HIV infection is often preceded or accompanied by psychiatric comorbidities. These disorders improve with complementary therapies. The aim of this study was to measure the effect of massage therapy on anxiety, depression, hyperventilation and quality of life in HIV infected patients. METHOD: Adult HIV-infected patients were randomized (n=29) in massage therapy group (one hour a week during four weeks) and control group. Anxiety and depression (HADS-A and HADS-D), hyperventilation (Nijmegen questionnaire) and quality of life (WHOQOL-HIV) were evaluated at inclusion and after 4 weeks...
June 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28614985/stimulation-of-abdominal-and-upper-thoracic-muscles-with-surface-electrodes-for-respiration-and-cough-acute-studies-in-adult-canines
#3
James S Walter, Joseph Posluszny, Raymond Dieter, Robert S Dieter, Scott Sayers, Kiratipath Iamsakul, Christine Staunton, Donald Thomas, Mark Rabbat, Sanjay Singh
OBJECTIVE: To optimize maximal respiratory responses with surface stimulation over abdominal and upper thorax muscles and using a 12-Channel Neuroprosthetic Platform. METHODS: Following instrumentation, six anesthetized adult canines were hyperventilated sufficiently to produce respiratory apnea. Six abdominal tests optimized electrode arrangements and stimulation parameters using bipolar sets of 4.5 cm square electrodes. Tests in the upper thorax optimized electrode locations, and forelimb moment was limited to slight-to-moderate...
June 14, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28608327/diffusional-kurtosis-imaging-dki-incorporation-into-an-intravoxel-incoherent-motion-ivim-mr-model-to-measure-cerebral-hypoperfusion-induced-by-hyperventilation-challenge-in-healthy-subjects
#4
Aude Pavilla, Giulio Gambarota, Alessandro Arrigo, Mehdi Mejdoubi, Régis Duvauferrier, Hervé Saint-Jalmes
OBJECTIVES: The objectives were to investigate the diffusional kurtosis imaging (DKI) incorporation into the intravoxel incoherent motion (IVIM) model for measurements of cerebral hypoperfusion in healthy subjects. MATERIALS AND METHODS: Eight healthy subjects underwent a hyperventilation challenge with a 4-min diffusion weighted imaging protocol, using 8 b values chosen with the Cramer-Rao Lower Bound optimization approach. Four regions of interest in gray matter (GM) were analyzed with the DKI-IVIM model and the bi-exponential IVIM model, for normoventilation and hyperventilation conditions...
June 12, 2017: Magma
https://www.readbyqxmd.com/read/28605206/the-effect-of-a-holistic-self-management-plan-on-asthma-control
#5
Eirini Grammatopoulou, Emmanouil K Skordilis, Aikaterini Haniotou, Zarotis John, Spyros Athanasopoulos
The holistic self-management plan includes lifelong actions that enable patients to cope with their disease. The present study was designed to evaluate the effect of a holistic self-management plan on asthma control. A 12-month controlled study was conducted. Adult patients with mild-to-moderate asthma (n = 24) who attended the emergency asthma department were randomized to two groups: One group followed four educational sessions and three personal home sessions (n = 12), while a second group received a short manual with asthma information (n = 12)...
June 12, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28598405/design-and-validation-of-a-breathing-detection-system-for-scuba-divers
#6
Corentin Altepe, S Murat Egi, Tamer Ozyigit, D Ruzgar Sinoplu, Alessandro Marroni, Paola Pierleoni
Drowning is the major cause of death in self-contained underwater breathing apparatus (SCUBA) diving. This study proposes an embedded system with a live and light-weight algorithm which detects the breathing of divers through the analysis of the intermediate pressure (IP) signal of the SCUBA regulator. A system composed mainly of two pressure sensors and a low-power microcontroller was designed and programmed to record the pressure sensors signals and provide alarms in absence of breathing. An algorithm was developed to analyze the signals and identify inhalation events of the diver...
June 9, 2017: Sensors
https://www.readbyqxmd.com/read/28574856/camera-based-measurement-of-respiratory-rates-is-reliable
#7
Christoph Becker, Stefan Achermann, Mukul Rocque, Ihor Kirenko, Andreas Schlack, Thomas Dreher-Hummel, Thomas Zumbrunn, Roland Bingisser, Christian H Nickel
OBJECTIVES: Respiratory rate (RR) is one of the most important vital signs used to detect whether a patient is in critical condition. It is part of many risk scores and its measurement is essential for triage of patients in emergency departments. It is often not recorded as measurement is cumbersome and time-consuming. We intended to evaluate the accuracy of camera-based measurements as an alternative measurement to the current practice of manual counting. MATERIALS AND METHODS: We monitored the RR of healthy male volunteers with a camera-based prototype application and simultaneously by manual counting and by capnography, which was considered the gold standard...
June 1, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28574212/calculation-algorithms-alter-the-breath-by-breath-gas-exchange-values-when-abrupt-changes-in-ventilation-occur
#8
Valentina Cettolo, Maria Pia Francescato
The automatic metabolic units calculate breath-by-breath gas exchange from the expiratory data only, applying an algorithm ('expiration-only' algorithm) that neglects the changes in the lung gas stores. These last are theoretically taken into account by a recently proposed algorithm, based on an alternative view of the respiratory cycle ('alternative respiratory cycle' algorithm). The performance of the two algorithms was investigated where changes in the lung gas stores were induced by abrupt increases in ventilation above the physiological demand...
June 2, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28533756/guinea-pig-oxygen-sensing-and-carotid-body-functional-properties
#9
Elvira Gonzalez-Obeso, Inmaculada Docio, Elena Olea, Angel Cogolludo, Ana Obeso, Asuncion Rocher, Angela Gomez-Niño
Mammals have developed different mechanisms to maintain oxygen supply to cells in response to hypoxia. One of those mechanisms, the carotid body (CB) chemoreceptors, is able to detect physiological hypoxia and generate homeostatic reflex responses, mainly ventilatory and cardiovascular. It has been reported that guinea pigs, originally from the Andes, have a reduced ventilatory response to hypoxia compared to other mammals, implying that CB are not completely functional, which has been related to genetically/epigenetically determined poor hypoxia-driven CB reflex...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28530253/sensitivity-and-specificity-of-vestibular-bedside-examination-in-detecting-viii-cranial-nerve-schwannoma-with-sensorineural-sudden-unilateral-hearing-loss-as-presenting-symptom
#10
L Califano, F Salafia, M G Melillo, S Mazzone
The objectives of this study were to identify signs of vestibular nerve suffering through a bedside vestibular examination protocol in case of sudden sensorineural unilateral hearing loss without spontaneous signs of vestibular impairment and to propose a bed-side vestibular examination based protocol for the focused execution of gadolinium-enhanced magnetic resonance imaging (MRI) only if a vestibular schwannoma is suspected. 96 patients, 52 men, 44 women, mean age 57.73 +/- 12.85 years, suffering from sudden sensorineural unilateral hearing loss, which presented neither vertigo nor spontaneous nystagmus, were enrolled...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28527369/prolonged-epileptiform-eeg-runs-are-associated-with-persistent-seizures-in-juvenile-myoclonic-epilepsy
#11
Vibeke Arntsen, Trond Sand, Marte R Syvertsen, Eylert Brodtkorb
OBJECTIVE: In juvenile myoclonic epilepsy (JME), various EEG characteristics have been suggested as poor prognostic signs, but their significance is unclear. The aim of this study was to assess the influence of EEG variables on seizure and psychosocial outcome after a follow-up exceeding 20 years. METHODS: 396 EEG recordings were available for assessment in 40 patients (42 complete digital, 330 paper segments and 24 written reports only). Mean follow-up was 31 years (range 20-68)...
May 8, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28527012/effect-of-voluntary-hypocapnic-hyperventilation-or-moderate-hypoxia-on-metabolic-and-heart-rate-responses-during-high-intensity-intermittent-exercise
#12
Kohei Dobashi, Naoto Fujii, Kazuhito Watanabe, Bun Tsuji, Yosuke Sasaki, Tomomi Fujimoto, Satoru Tanigawa, Takeshi Nishiyasu
PURPOSE: To investigate the effect of voluntary hypocapnic hyperventilation or moderate hypoxia on metabolic and heart rate responses during high-intensity intermittent exercise. METHODS: Ten males performed three 30-s bouts of high-intensity cycling [Ex1 and Ex2: constant-workload at 80% of the power output in the Wingate anaerobic test (WAnT), Ex3: WAnT] interspaced with 4-min recovery periods under normoxic (Control), hypocapnic or hypoxic (2500 m) conditions...
May 19, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28512500/the-effect-of-chunghyul-dan-on-hyperventilation-induced-carbon-dioxide-reactivity-of-the-middle-cerebral-artery-in-normal-subjects-a-dose-dependent-study
#13
Chul Jin, Sang-Kwan Moon, Seung-Yeon Cho, Seong-Uk Park, Woo-Sang Jung, Jung-Mi Park, Chang-Nam Ko, Ki-Ho Cho, Seungwon Kwon
Background. This study was conducted to show the prompt effect of chunghyul-dan (CHD) on cerebral hemodynamics in order to provide evidence for its use in stroke prevention. Methods. Hyperventilation-induced CO2 reactivity of the middle cerebral artery was measured in 12 healthy male volunteers (mean age: 26.3 ± 1.1 years) using transcranial Doppler sonography. All subjects were examined before and for 3 hours after administration, with an interval of 1 week between measurements. Results. Compared to baseline, the CO2 reactivity of the middle cerebral artery increased significantly at 2 and 3 hours after the administration of CHD (600 mg and 1200 mg)...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28506086/invasive-cardiopulmonary-exercise-testing-in-the-evaluation-of-unexplained-dyspnea-insights-from-a-multidisciplinary-dyspnea-center
#14
Wei Huang, Stephen Resch, Rudolf Kf Oliveira, Barbara A Cockrill, David M Systrom, Aaron B Waxman
Background Unexplained dyspnea is a common diagnosis that often results in repeated diagnostic testing and even delayed treatments while a determination of the cause is being investigated. Through a retrospective study, we evaluated the diagnostic efficacy of a multidisciplinary dyspnea evaluation center (MDEC) using invasive cardiopulmonary exercise test to diagnose potential causes of unexplained dyspnea. Methods We reviewed the medical records of all patients referred with unexplained dyspnea to the MDEC between March 2011 and October 2014...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28499516/improving-cpr-performance
#15
REVIEW
Boulos S Nassar, Richard Kerber
Cardiac arrest continues to represent a public health burden with most patients having dismal outcomes. Cardiopulmonary resuscitation (CPR) is a complex set of interventions requiring leadership, coordination, and best practices. Despite the widespread adoption of new evidence in various guidelines, the provision of CPR remains variable with poor adherence to published recommendations. Key steps health care systems can take to enhance the quality of CPR and, potentially, to improve outcomes, include optimizing chest compressions; avoiding hyperventilation; encouraging intraosseus access, and monitoring capnography...
May 9, 2017: Chest
https://www.readbyqxmd.com/read/28495814/automated-control-of-mechanical-ventilation-during-general-anaesthesia-study-protocol-of-a-bicentric-observational-study-avas
#16
Dirk Schädler, Georg Miestinger, Tobias Becher, Inéz Frerichs, Norbert Weiler, Christoph Hörmann
INTRODUCTION: Automated control of mechanical ventilation during general anaesthesia is not common. A novel system for automated control of most of the ventilator settings was designed and is available on an anaesthesia machine. METHODS AND ANALYSIS: The 'Automated control of mechanical ventilation during general anesthesia study' (AVAS) is an international investigator-initiated bicentric observational study designed to examine safety and efficacy of the system during general anaesthesia...
May 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28478843/respiratory-alkalosis-may-impair-the-production-of-vitamin-d-and-lead-to-significant-morbidity-including-the-fibromyalgia-syndrome
#17
John M Lewis, Toinette H Fontrier, J Lynn Coley
Hyperventilation caused by physical and/or psychological stress may lead to significant respiratory alkalosis and an elevated systemic pH. The alkalotic pH may in turn suppress the normal renal release of phosphate into the urine, thereby interrupting the endogenous production of 1,25-dihydroxyvitamin D (calcitriol). This could cause a shortfall in its normal production, leading to a variety of adverse consequences. It might partially explain the pathogenesis of acute mountain sickness, a treatable disease characterized by severe hyperventilation secondary to the hypoxia of high altitude exposure...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28476010/redox-signaling-in-acute-oxygen-sensing
#18
REVIEW
Lin Gao, Patricia González-Rodríguez, Patricia Ortega-Sáenz, José López-Barneo
Acute oxygen (O2) sensing is essential for individuals to survive under hypoxic conditions. The carotid body (CB) is the main peripheral chemoreceptor, which contains excitable and O2-sensitive glomus cells with O2-regulated ion channels. Upon exposure to acute hypoxia, inhibition of K(+) channels is the signal that triggers cell depolarization, transmitter release and activation of sensory fibers that stimulate the brainstem respiratory center to produce hyperventilation. The molecular mechanisms underlying O2 sensing by glomus cells have, however, remained elusive...
August 2017: Redox Biology
https://www.readbyqxmd.com/read/28471819/hyperventilation-induced-non-epileptic-seizures-in-an-adolescent-boy-with-pediatric-medical-traumatic-stress
#19
Parul Chandra, Kasia Kozlowska, Catherine Cruz, Gaston C Baslet, David L Perez, M Elena Garralda
No abstract text is available yet for this article.
May 4, 2017: Harvard Review of Psychiatry
https://www.readbyqxmd.com/read/28469725/asthma-like-attacks-terminated-by-slow-pathway-ablation
#20
Selcuk Ozturk, Hasan Turhan, Ertan Yetkin
Asthma is a chronic airway disease in which the pathological mechanisms are reversible airway obstruction, bronchial hyper reactivity, and constriction of the lower airways. Supraventricular tachycardia (SVT) is a common arrhythmia which originates above the bundle of His and causing heart rates exceeding 150 beats/min. SVT patients present with palpitation, chest pain, chest discomfort, dyspnea, hyperventilation, and lightheadedness, occasionally. Besides, extraordinary presentations of SVT are available in literature...
April 2017: Annals of Thoracic Medicine
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