keyword
MENU ▼
Read by QxMD icon Read
search

Breath test

keyword
https://www.readbyqxmd.com/read/29333884/use-of-tidal-breathing-curves-for-evaluating-expiratory-airway-obstruction-in-infants
#1
Avigdor Hevroni, Aliza Goldman, Miriam Blank-Brachfeld, Wiessam Abu Ahmad, Lior Ben-Dov, Chaim Springer
OBJECTIVE: To evaluate tidal breathing (TB) flow-volume and flow-time curves for identification of expiratory airway obstruction in infants. METHODS: Pulmonary function tests were analyzed retrospectively in 156 infants aged 3-24 months with persistent or recurrent respiratory complaints. Parameters derived from TB curves were compared to maximal expiratory flow at functional residual capacity ([Formula: see text]maxFRC) measured by rapid thoracoabdominal compression technique...
January 15, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29333566/principles-of-management-of-central-nervous-system-infections
#2
REVIEW
Sunit Singhi, Suresh Kumar Angurana
CNS infections in children are medical emergency and are associated with high mortality and morbidity. For diagnosis, a high index of suspicion is required. Clinical assessment should be supplemented by laboratory investigations including CSF Gram stain and cultures, blood culture, PCR on CSF, serological tests, and imaging. Commonly associated life threatening complications include coma, seizure, raised intracranial pressure (ICP), focal deficits, shock, respiratory failure, and fluid and electrolyte abnormalities...
January 15, 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29331743/preliminary-investigation-of-human-exhaled-breath-for-tuberculosis-diagnosis-by-multidimensional-gas-chromatography-time-of-flight-mass-spectrometry-and-machine-learning
#3
Marco Beccaria, Theodore R Mellors, Jacky S Petion, Christiaan A Rees, Mavra Nasir, Hannah K Systrom, Jean W Sairistil, Marc-Antoine Jean-Juste, Vanessa Rivera, Kerline Lavoile, Patrice Severe, Jean W Pape, Peter F Wright, Jane E Hill
Tuberculosis (TB) remains a global public health malady that claims almost 1.8 million lives annually. Diagnosis of TB represents perhaps one of the most challenging aspects of tuberculosis control. Gold standards for diagnosis of active TB (culture and nucleic acid amplification) are sputum-dependent, however, in up to a third of TB cases, an adequate biological sputum sample is not readily available. The analysis of exhaled breath, as an alternative to sputum-dependent tests, has the potential to provide a simple, fast, and non-invasive, and ready-available diagnostic service that could positively change TB detection...
January 4, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29329683/respiratory-disease-in-ball-pythons-python-regius-experimentally-infected-with-ball-python-nidovirus
#4
Laura L Hoon-Hanks, Marylee L Layton, Robert J Ossiboff, John S L Parker, Edward J Dubovi, Mark D Stenglein
Circumstantial evidence has linked a new group of nidoviruses with respiratory disease in pythons, lizards, and cattle. We conducted experimental infections in ball pythons (Python regius) to test the hypothesis that ball python nidovirus (BPNV) infection results in respiratory disease. Three ball pythons were inoculated orally and intratracheally with cell culture isolated BPNV and two were sham inoculated. Antemortem choanal, oroesophageal, and cloacal swabs and postmortem tissues of infected snakes were positive for viral RNA, protein, and infectious virus by qRT-PCR, immunohistochemistry, western blot and virus isolation...
January 9, 2018: Virology
https://www.readbyqxmd.com/read/29329406/judgement-of-breath-alcohol-concentration-levels-among-pedestrians-in-the-night-time-economy-a-street-intercept-field-study
#5
M P Cameron, M J Roskruge, N Droste, P G Miller
Aims: To evaluate how well people in the night-time economy can assess their own breath alcohol concentration (BrAC), in the context of a change in breath alcohol limits for driving. Methods: We conducted a field study of 242 participants over 5 nights in the central business district of a university town in New Zealand. Participants completed a short survey, which included questions on their self-reported level of intoxication and the self-estimated BrAC. At the conclusion of the interview each participant was breath-tested...
January 10, 2018: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/29327348/respiratory-dysfunction-progresses-with-age-in-kcna1-null-mice-a-model-of-sudden-unexpected-death-in-epilepsy
#6
Kristina A Simeone, Jodi Hallgren, Charles S Bockman, Ankita Aggarwal, Vikash Kansal, Lauren Netzel, Shruthi H Iyer, Stephanie A Matthews, Malavika Deodhar, Peter J Oldenburg, Peter W Abel, Timothy A Simeone
OBJECTIVE: Increased breathing rate, apnea, and respiratory failure are associated with sudden unexpected death in epilepsy (SUDEP). We recently demonstrated the progressive nature of epilepsy and mortality in Kcna1-/- mice, a model of temporal lobe epilepsy and SUDEP. Here we tested the hypothesis that respiratory dysfunction progresses with age in Kcna1-/- mice, thereby increasing risk of respiratory failure and sudden death (SD). METHODS: Respiratory parameters were determined in conscious mice at baseline and following increasing doses of methacholine (MCh) using noninvasive airway mechanics (NAM) systems...
January 12, 2018: Epilepsia
https://www.readbyqxmd.com/read/29325236/treatment-with-a-ghrelin-agonist-in-outpatient-women-with-anorexia-nervosa-a-randomized-clinical-trial
#7
Pouneh K Fazeli, Elizabeth A Lawson, Alexander T Faje, Kamryn T Eddy, Hang Lee, Fred T Fiedorek, Anne Breggia, Ildiko M Gaal, Rebecca DeSanti, Anne Klibanski
OBJECTIVE: To assess the effects of relamorelin-an agonist of the appetite-stimulating hormone ghrelin, which has effects on gastric emptying-on (1) weight gain and (2) gastric emptying in women with anorexia nervosa. METHODS: In a randomized, double-blind, placebo-controlled design, the effects of the ghrelin agonist relamorelin were studied in 22 outpatient women with anorexia nervosa, diagnosed using DSM-5 criteria. The study was conducted at the Massachusetts General Hospital Clinical Research Center between March 11, 2013, and February 26, 2015...
January 2, 2018: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/29324693/inhibiting-the-physiological-stress-effects-of-a-sustained-attention-task-on-shoulder-muscle-activity
#8
Fiona Wixted, Cliona O'Riordan, Leonard O'Sullivan
OBJECTIVE: The objective of this study was to investigate if a breathing technique could counteract the effects of hyperventilation due to a sustained attention task on shoulder muscle activity. BACKGROUND: The trend towards higher levels of automation in industry is increasing. Consequently, manufacturing operators often monitor automated process for long periods of their work shift. Prolonged monitoring work requires sustained attention, which is a cognitive process that humans are typically poor at and find stressful...
January 11, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29324580/the-relationship-between-skating-economy-and-performance-during-a-repeated-shift-test-in-elite-and-sub-elite-ice-hockey-players
#9
Nicholas R Lamoureux, Grant R Tomkinson, Benjamin J Peterson, John S Fitzgerald
The purpose of this study was to determine the importance of skating economy to fatigue during repeated high-intensity efforts of a simulated ice hockey shift. Forty-five collegiate and Junior A male ice hockey players (aged 18-24 years) performed a continuous graded exercise test using a skate treadmill. Breath-by-breath data for oxygen consumption (V[Combining Dot Above]O2) and respiratory exchange ratio were collected and used to derive energy expenditure (EE) averaged over the final 10 seconds of each stage...
January 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29324406/a-novel-multi-class-eeg-based-sleep-stage-classification-system
#10
Pejman Memar, Farhad Faradji
Sleep stage classification is one of the most critical steps in effective diagnosis and the treatment of sleep-related disorders. Visual inspection undertaken by sleep experts is a time-consuming and burdensome task. A computer-assisted sleep stage classification system is thus essential for both sleep-related disorders diagnosis and sleep monitoring. In this paper, we propose a system to classify the wake and sleep stages with high rates of sensitivity and specificity. The EEG signals of 25 subjects with suspected sleep-disordered breathing, and the EEG signals of 20 healthy subjects from three data sets are used...
January 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29323932/the-effects-of-breath-alcohol-concentration-on-postural-control
#11
Dary D Fiorentino
STRUCTURED ABSTRACT Background: Two of the three standardized field sobriety tests that US law enforcement uses at roadside checks have a postural equilibrium component to them. Those tests have been validated to detect impairment caused by blood alcohol concentrations (BACs) of .08 g/dL or above. Many medical and traffic safety associations support a lower limit, and one state, Utah, has passed a law to lower the limit to .05 g/dL. Many studies have examined the effects of alcohol on postural control (of which postural equilibrium is a component), with a consensus emerging that impairment is usually found at BACs greater than ...
January 11, 2018: Traffic Injury Prevention
https://www.readbyqxmd.com/read/29322580/a-study-of-environmental-factors-affecting-nurses-comfort-and-protection-in-wearing-n95-respirators-during-bedside-procedures
#12
P P L Or, J W Y Chung, T K S Wong
AIM: To investigate room temperature and relative humidity affecting nurses' comfort and protection in wearing N95 respirators during clinical bedside procedures. BACKGROUND: N95 respirators are most commonly used to protect healthcare workers against airborne diseases. The elastic head straps required for tight fit may cause headache, facial pain and/or ear lobe discomfort. Although some past fit test results showed that these respirators are likely to fit comfortably, in reality any discomfort from use may influence negatively their appeal and acceptability and thus lower their effectiveness to protect the wearers...
January 10, 2018: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29321559/the-role-of-parafacial-neurons-in-the-control-of-breathing-during-exercise
#13
Alla Korsak, Shahriar Sheikhbahaei, Asif Machhada, Alexander V Gourine, Robert T R Huckstepp
Neuronal cell groups residing within the retrotrapezoid nucleus (RTN) and C1 area of the rostral ventrolateral medulla oblongata contribute to the maintenance of resting respiratory activity and arterial blood pressure, and play an important role in the development of cardiorespiratory responses to metabolic challenges (such as hypercapnia and hypoxia). In rats, acute silencing of neurons within the parafacial region which includes the RTN and the rostral aspect of the C1 circuit (pFRTN/C1), transduced to express HM4D (Gi-coupled) receptors, was found to dramatically reduce exercise capacity (by 60%), determined by an intensity controlled treadmill running test...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29319596/obstructive-sleep-apnea-assessed-by-overnight-polysomnography-in-patients-with-keratoconus
#14
Emilio Pedrotti, Christian Luigi Demasi, Adriano Fasolo, Erika Bonacci, Tommaso Brighenti, Nicola Gennaro, Marcello Ferrari, Giorgio Marchini
PURPOSE: To determine the prevalence of obstructive sleep apnea (OSA) in patients with keratoconus (KCN) and to evaluate the association between the severity of KCN and OSA. METHODS: OSA was diagnosed with an overnight home sleep apnea test. As estimated by home monitoring, an apnea-hypopnea index threshold of ≥5 sleep-related obstructive breathing events per hour was considered suggestive of OSA. For grading KCN severity (Amsler-Krumeich classification), slit-lamp biomicroscopy, corneal topography, and pachymetry measurements were performed...
January 9, 2018: Cornea
https://www.readbyqxmd.com/read/29318566/diagnostic-accuracy-of-level-iv-portable-sleep-monitors-versus-polysomnography-for-obstructive-sleep-apnea-a-systematic-review-and-meta-analysis
#15
REVIEW
Lusine Abrahamyan, Yeva Sahakyan, Suzanne Chung, Petros Pechlivanoglou, Joanna Bielecki, Steven M Carcone, Valeria E Rac, Michael Fitzpatrick, Murray Krahn
PURPOSE: Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder. In-laboratory, overnight type I polysomnography (PSG) is the current "gold standard" for diagnosing OSA. Home sleep apnea testing (HSAT) using portable monitors (PMs) is an alternative testing method offering better comfort and lower costs. We aimed to systematically review the evidence on diagnostic ability of type IV PMs compared to PSG in diagnosing OSA. METHODS: Participants: patients ≥16 years old with symptoms suggestive of OSA;intervention: type IV PMs (devices with < 2 respiratory channels); comparator: in-laboratory PSG; outcomes: diagnostic accuracy measures;studies: cross-sectional, prospective observational/experimental/quasi-experimental studies; information sources: MEDLINE and Cochrane Library from January 1, 2010 to May 10, 2016...
January 9, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29317845/pyomyositis-in-the-setting-of-complicated-diverticulitis-case-report
#16
James Sun, David Leor Kashan, Jolita Marie Auguste, Akella Chendrasekhar
Pyomyositis is typically thought of as a disease of the tropics. However, it is becoming more prevalent in temperate regions, and may be underdiagnosed. Here, pyomyositis is encountered as a complication of perforated diverticulitis, which has not been previously reported. A 61-year-old Caucasian man initially presented in respiratory distress and was diagnosed with respiratory failure due to COPD exacerbation. The patient was taking high-dose prednisone, 60 mg daily for the past 2 years. Initially, he was afebrile, normotensive, tachycardic to 178 beats/minute and tachypneic to 28 breaths/minute, requiring noninvasive ventilation to maintain oxygenation...
2018: International Journal of General Medicine
https://www.readbyqxmd.com/read/29315657/dysautonomy-in-different-death-risk-groups-rassi-score-in-patients-with-chagas-heart-disease
#17
Catherine Masiel Merejo Peña, Michel Silva Reis, Basílio de Bragança Pereira, Emília Matos do Nascimento, Roberto Coury Pedrosa
BACKGROUND: It has been difficult to prove that the "catecholamine-induced cardiomyopathy" contributes to the mechanism of sudden cardiac death in Chagas heart disease. Also, it is almost impossible to rule out the possibility that is not involved in the process. More importantly, the vagal-cholinergic pathway in the ventricle plays a direct role in the prevention of the initiation of complex ventricular arrhythmias, including non-sustained ventricular tachycardia, ventricular fibrillation responsible for sudden death...
January 5, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29314198/nonrigid-active-shape-model-based-registration-framework-for-motion-correction-of-cardiac-t1-mapping
#18
Hossam El-Rewaidy, Maryam Nezafat, Jihye Jang, Shiro Nakamori, Ahmed S Fahmy, Reza Nezafat
PURPOSE: Accurate reconstruction of myocardial T1 maps from a series of T1 -weighted images consists of cardiac motions induced from breathing and diaphragmatic drifts. We propose and evaluate a new framework based on active shape models to correct for motion in myocardial T1 maps. METHODS: Multiple appearance models were built at different inversion time intervals to model the blood-myocardium contrast and brightness changes during the longitudinal relaxation. Myocardial inner and outer borders were automatically segmented using the built models, and the extracted contours were used to register the T1 -weighted images...
January 3, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29313714/decreased-lung-function-and-all-cause-mortality-in-hiv-infected-individuals
#19
Matthew R Gingo, Mehdi Nouraie, Cathy J Kessinger, Ruth M Greenblatt, Laurence Huang, Eric C Kleerup, Lawrence Kingsley, Deborah K McMahon, Alison Morris
RATIONALE: HIV infection is associated with pulmonary disease and worse lung function, but the relationship of lung function with survival in HIV is unknown. OBJECTIVES: To determine if lung function is associated with all-cause mortality in HIV-infected individuals. METHODS: Longitudinal cohort study of HIV-infected participants. RESULTS: HIV-infected pParticipants from cohorts in three locations underwent pre- and post-bronchodilator spirometry and single-breath diffusion capacity for carbon monoxide (DLCO) in 2008-2009, computed tomography (CT) of the chest for quantitative emphysema and airway measures, and echocardiogram for estimated left ventricular systolic and diastolic function and tricuspid regurgitant velocity...
January 9, 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29306672/the-bronchiectasis-severity-index-and-faced-score-for-assessment-of-the-severity-of-bronchiectasis
#20
J C Costa, J N Machado, C Ferreira, J Gama, C Rodrigues
INTRODUCTION: Bronchiectasis (BC) is a multidimensional and etiologically diverse disease and, therefore, no single parameter can be used to determine its overall severity and prognosis. In this regard, two different validated scores are currently used to assess the severity of non-cystic fibrosis bronchiectasis (NCFB): the FACED score and the Bronchiectasis Severity Index (BSI). OBJECTIVE: To describe the etiology of NCFB and compare the results of the assessment of NCFB severity obtained via FACED and BSI scores...
January 3, 2018: Revista Portuguesa de Pneumologia
keyword
keyword
72782
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"