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Respiratory sounds

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https://www.readbyqxmd.com/read/28641244/computerized-lung-sound-screening-for-pediatric-auscultation-in-noisy-field-environments
#1
Dimitra Emmanouilidou, Eric D McCollum, Daniel E Park, Mounya Elhilali
GOAL: Chest auscultations offer a non-invasive and low-cost tool for monitoring lung disease. However, they present many shortcomings including inter-listener variability, subjectivity, and vulnerability to noise and distortions. The current work proposes a computer-aided approach to process lung signals acquired in the field under adverse noisy conditions, by improving the signal quality and offering automated iden- tification of abnormal auscultations indicative of respiratory pathologies...
June 19, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28587528/a-prospective-observational-cohort-study-of-exposure-to-womb-like-sounds-to-stabilize-breathing-and-cardiovascular-patterns-in-preterm-neonates
#2
Joanna J Parga, Ravi R Bhatt, Kalpashri Kesavan, Myung-Shin Sim, Harvey N Karp, Ronald M Harper, Lonnie Zeltzer
PURPOSE: We exposed premature infants to womb-like sounds to evaluate such exposure on breathing and cardiovascular patterns. We hypothesized that these sounds would reduce apnea and intermittent hypoxemia, enhance parasympathetic outflow, and improve cardiovascular patterns. METHODS: A total of 20 cases and 5 control infants at ≤ 32-36 weeks corrected gestational age participated in a prospective observational cohort study. Twenty-four hours of continuous ECG, respiratory and oxygen saturation data were collected in all infants...
June 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28583532/prediction-of-fluid-responsiveness-by-a-non-invasive-respiratory-systolic-time-interval-variation-using-heart-sound-signals-in-recipients-undergoing-liver-transplantation
#3
S-H Kim, Y-J Moon, J-W Kim, J-G Song, G-S Hwang
BACKGROUND: The fluid management of cirrhotic patients undergoing liver transplantation (LT) is challenging. Phonocardiography, a graphic recording of heart sounds, provides valuable information concerning heart function and hemodynamic condition. We assessed whether the systolic time interval (STI) and its respiratory variation could predict fluid responsiveness in cirrhotic patients undergoing LT. METHODS: Thirty LT recipients who needed volume expansion were included...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28569174/assessing-the-anthelmintic-activity-of-pyrazole-5-carboxamide-derivatives-against-haemonchus-contortus
#4
Yaqing Jiao, Sarah Preston, Hongjian Song, Abdul Jabbar, Yuxiu Liu, Jonathan Baell, Andreas Hofmann, Dana Hutchinson, Tao Wang, Anson V Koehler, Gillian M Fisher, Katherine T Andrews, Benoît Laleu, Michael J Palmer, Jeremy N Burrows, Timothy N C Wells, Qingmin Wang, Robin B Gasser
BACKGROUND: In this study, we tested five series of pyrazole-5-carboxamide compounds (n = 55) for activity against parasitic stages of the nematode Haemonchus contortus (barber's pole worm), one of the most pathogenic parasites of ruminants. METHODS: In an optimised, whole-organism screening assay, using exsheathed third-stage (xL3) and fourth-stage (L4) larvae, we measured the inhibition of larval motility and development of H. contortus. RESULTS: Amongst the 55 compounds, we identified two compounds (designated a-15 and a-17) that reproducibly inhibit xL3 motility as well as L4 motility and development, with IC50 values ranging between ~3...
May 31, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28566081/-a-rarely-isolated-bacterium-in-microbiology-laboratories-streptococcus-uberis
#5
Canan Eryıldız, Şebnem Bukavaz, Şaban Gürcan, Osman Hatipoğlu
Streptococcus uberis is a gram-positive bacterium that is mostly responsible for mastitis in cattle. The bacterium rarely has been associated with human infections. Conventional phenotyphic methods can be inadequate for the identification of S.uberis; and in microbiology laboratories S.uberis is confused with the other streptococci and enterococci isolates. Recently, molecular methods are recommended for the accurate identification of S.uberis isolates. The aim of this report is to present a lower respiratory tract infection case caused by S...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28552969/automatic-adventitious-respiratory-sound-analysis-a-systematic-review
#6
Renard Xaviero Adhi Pramono, Stuart Bowyer, Esther Rodriguez-Villegas
BACKGROUND: Automatic detection or classification of adventitious sounds is useful to assist physicians in diagnosing or monitoring diseases such as asthma, Chronic Obstructive Pulmonary Disease (COPD), and pneumonia. While computerised respiratory sound analysis, specifically for the detection or classification of adventitious sounds, has recently been the focus of an increasing number of studies, a standardised approach and comparison has not been well established. OBJECTIVE: To provide a review of existing algorithms for the detection or classification of adventitious respiratory sounds...
2017: PloS One
https://www.readbyqxmd.com/read/28550928/effectiveness-of-continuous-wound-infusion-of-local-anesthetics-after-abdominal-surgeries
#7
Baskaran Dhanapal, Sarath Chandra Sistla, Ashok Shankar Badhe, Sheikh Manwar Ali, Niranjan T Ravichandran, Indira Galidevara
BACKGROUND: To assess the effectiveness of continuous preperitoneal wound infusion of local anesthetic drug bupivacaine in providing pain relief, reducing opioid consumption, and enhancing postoperative recovery. METHODS: Eligible patients were randomly allocated to two groups (study group: bupivacaine and control group: normal saline). There were 47 patients in each group. The patients received continuous infusion of either 0.25% bupivacaine or 0.9% normal saline at 6 mL/h, for 48 h, based on their group allocation, through a multiholed wound infiltration catheter placed preperitoneally...
May 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28530262/transtracheal-endoscopic-assisted-resection-of-a-rare-inflammatory-myofibroblastic-tumour-in-adult-trachea-a-case-report
#8
S Reddy, R Swamy, D V Kumar Irugu, K V V Ramji
Inflammatory myofibroblastic tumours (IMTs) are rare and clinically benign in childhood, and malignant in adults. The aetiology of IMTs is not clear, and recent studies report it as true neoplasm rather than a reactive or inflammatory lesion. IMTs can involve any part of the body, but are usually common in lungs. These are rarely seen in adults and tracheal involvement is also rare in both adults and children. We describe an 18-year-old woman who presented with respiratory difficulty to the emergency department...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28528787/inspiratory-phonation-in-baby-voice
#9
Kathleen Wermke, Asin Ahmad Haschemi, Volker Hesse, Michael P Robb
OBJECTIVE: This study aimed to evaluate the developmental occurrence of inspiratory phonations (IPs) in the spontaneous cries of healthy infants across the first 10 weeks of life. STUDY DESIGN: This is a populational retrospective study. PARTICIPANTS: The spontaneous crying of 17 healthy infants (10 were male) was retrospectively investigated. MATERIALS AND METHODS: Sound files of spontaneously uttered cries that were repeatedly recorded once per week for across the first 10 weeks of life were retrospectively analyzed...
May 18, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28520888/traffic-congestion-as-a-risk-factor-for-mortality-in-near-road-communities-a-case-crossover-study
#10
Meredith Pedde, Adam A Szpiro, Sara D Adar
Existing epidemiological research on traffic largely neglects localized fluctuations. We leveraged finely-resolved congestion data to investigate short-term associations with mortality in near-road communities. We identified all non-accidental, cardiovascular, cerebrovascular, and respiratory deaths (2009-2013) within 1 km of a Puget Sound highway. Using a case-crossover design, we examined the association between congestion 0-150, 151-300, and 301-1000 m upwind of a decedent's home and mortality, adjusting for meteorology, holidays, and flu...
May 18, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28512363/-attenuation-of-earmuffs-used-simultaneously-with-respiratory-protective-devices
#11
Emil Kozłowski, Rafał Młyński
BACKGROUND: In the work environment, apart from the noise, employees may be exposed to other harmful factors. Therefore, they wear hearing protectors and other personal protective equipment. The aim of the study was to determine whether simultaneous use of earmuffs and respiratory protective devices affects the attenuation of earmuffs. MATERIAL AND METHODS: The study was conducted in laboratory conditions using the subjective REAT (Real Ear Attenuation at Threshold) and objective MIRE (Microphone in Real Ear) methods...
May 16, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28510504/cardiopulmonary-exercise-testing-basics-of-methodology-and-measurements
#12
Alessandro Mezzani
Cardiopulmonary exercise testing adds measurement of ventilation and volume of oxygen uptake and exhaled carbon dioxide to routine physiological and performance parameters obtainable from conventional exercise testing, furnishing an all-round vision of the systems involved in both oxygen transport from air to mitochondria and its utilization during exercise. Peculiarities of cardiopulmonary exercise testing methodology are the use of ramp protocols and calibration procedures for flow meters and gas analyzers...
May 16, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28507831/streptococcus%C3%A2-gordonii%C3%A2-empyema-a-case-report-and-review-of-empyema
#13
Amanda M Krantz, Felicia Ratnaraj, Manasa Velagapudi, Mridula Krishnan, Nagarjuna R Gujjula, Pamela A Foral, Laurel Preheim
Streptococcus gordonii (S. gordonii) is a pioneer oral bacteria that is recognized as an agent of bacterial endocarditis. However, an extensive review of the literature revealed no reported case of S. gordonii causing empyema. We present a case of a 65-year-old male who presented with respiratory distress. Physical examination revealed several dental caries with decreased breath sounds in the bibasilar regions. A computed tomography (CT) scan of the chest and abdomen demonstrated left-sided pleural effusion and a 4...
April 12, 2017: Curēus
https://www.readbyqxmd.com/read/28495874/cranking-up-the-heat-relationships-between-energetically-costly-song-features-and-the-increase-in-thorax-temperature-in-male-crickets-and-katydids
#14
B Erregger, H Kovac, A Stabentheiner, M Hartbauer, H Römer, A K D Schmidt
Sexual displays of acoustically signalling insects are used in the context of mate attraction and mate choice. While energetic investment in sound production can increase the reproductive success of the sender, this entails metabolic costs. Resource allocation into sexually selected, reproductive traits can trade off against allocation to naturally selected traits (e.g., growth, immunity) when individuals' energy budgets are limited. Estimating the magnitude of the costs invested in acoustic signalling is necessary to understand this trade-off and its influence on fitness and life-history...
May 11, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28451580/a-wireless-electronic-esophageal-stethoscope-for-continuous-monitoring-of-cardiovascular-and-respiratory-systems-during-anaesthesia
#15
H Parsaei, A Vakily, A M Shafiei
BACKGROUND: The basic requirements for monitoring anesthetized patients during surgery are assessing cardiac and respiratory function. Esophageal stethoscopes have been developed for this purpose, but these devices may not provide clear heart and lung sound due to existence of various noises in operating rooms. In addition, the stethoscope is not applicable for continues monitoring, and it is unsuitable for observing inaccessible patients in some conditions such as during CT scan. OBJECTIVE: A wireless electronic esophageal stethoscope is designed for continues auscultation of heart and lung sounds in anesthetized patients...
March 2017: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28407209/neutrophil-to-lymphocyte-ratio-an-emerging-marker-predicting-prognosis-in-elderly-adults-with-community-acquired-pneumonia
#16
Emanuela Cataudella, Chiara M Giraffa, Salvatore Di Marca, Alfredo Pulvirenti, Salvatore Alaimo, Marcella Pisano, Valentina Terranova, Thea Corriere, Maria L Ronsisvalle, Rosario Di Quattro, Benedetta Stancanelli, Mauro Giordano, Carlo Vancheri, Lorenzo Malatino
OBJECTIVES: To explore the performance of the neutrophil-to-lymphocyte ratio (NLR), an index of systemic inflammation that predicts prognosis of several diseases, in a cohort of elderly adults with community-acquired pneumonia (CAP). DESIGN: Prospective clinical study from January 2014 to July 2016. SETTING: Unit of Internal Medicine, University of Catania, Catania, Italy. PARTICIPANTS: Elderly adults admitted for CAP (N = 195)...
April 13, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28401328/equine-colic-clinical-epidemiology-and-associated-risk-factors-in-and-around-debre-zeit
#17
Yonas Worku, Workneh Wondimagegn, Nigatu Aklilu, Zerihun Assefa, Ayele Gizachew
A prospective study was conducted to describe clinical epidemiology of equine colic in the Society for Protection of Animal Abroad and Donkey Sanctuary Project Clinic, at Debre Zeit, Ethiopia, from November 2014 to April 2015. The objectives were to describe clinical epidemiology of equine colic, to characterize the main types of equine colic, and to determine the major risk factors associated with equine colic. The method which was used in the study was attending clinical case of equine and assessing physiological parameters, fecal egg count, abdominal sounds, and rectal examination as well as questioner interviewing of the owners...
April 11, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28364431/validation-of-the-sonomat-against-psg-and-quantitative-measurement-of-partial-upper-airway-obstruction-in-children-with-sleep-disordered-breathing
#18
Mark B Norman, Sonia M Pithers, Arthur Y Teng, Karen A Waters, Colin E Sullivan
Study Objectives: To validate the Sonomat against polysomnography (PSG) metrics in children and to objectively measure snoring and stertor to produce a quantitative indicator of partial upper airway obstruction that accurately reflects the pathology of pediatric sleep-disordered breathing (SDB). Methods: Simultaneous PSG and Sonomat recordings were performed in 76 children (46 male, age 5.8 ± 2.8, BMI = 18.5 ± 3.8 kg/m2). Sleep time, individual respiratory events and the apnea/hypopnea index (AHI) were compared...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28363113/the-attractor-recurrent-neural-network-based-on-fuzzy-functions-an-effective-model-for-the-classification-of-lung-abnormalities
#19
Mohammad Bagher Khodabakhshi, Mohammad Hassan Moradi
The respiratory system dynamic is of high significance when it comes to the detection of lung abnormalities, which highlights the importance of presenting a reliable model for it. In this paper, we introduce a novel dynamic modelling method for the characterization of the lung sounds (LS), based on the attractor recurrent neural network (ARNN). The ARNN structure allows the development of an effective LS model. Additionally, it has the capability to reproduce the distinctive features of the lung sounds using its formed attractors...
March 23, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28337872/safety-and-pharmacodynamic-mechanism-of-ropivacaine-lumbar-anesthesia-in-cesarean-section
#20
Q Liu, J J Wang, H Y Yan, Y Q Wang, C W Qin, M L Li
Lumbar anesthesia is the preferred anesthetic approach for puerperae undergoing cesarean section in China. To observe the safety of administering different doses of ropivacaine for cesarean section and its pharmacodynamic mechanism, we randomly divided 180 pregnant women undergoing cesarean section into three groups: group A, 10 mg ropivacaine (0.50%); group B, 12 mg ropivacaine (0.50%); and group C, 14 mg ropivacaine (0.50%). Pharmacodynamic index, anesthesia quality and incidence of untoward reactions of each group were observed...
January 2017: Journal of Biological Regulators and Homeostatic Agents
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