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https://www.readbyqxmd.com/read/28345604/mind-wandering-and-alterations-to-default-mode-network-connectivity-when-listening-to-naturalistic-versus-artificial-sounds
#1
Cassandra D Gould van Praag, Sarah N Garfinkel, Oliver Sparasci, Alex Mees, Andrew O Philippides, Mark Ware, Cristina Ottaviani, Hugo D Critchley
Naturalistic environments have been demonstrated to promote relaxation and wellbeing. We assess opposing theoretical accounts for these effects through investigation of autonomic arousal and alterations of activation and functional connectivity within the default mode network (DMN) of the brain while participants listened to sounds from artificial and natural environments. We found no evidence for increased DMN activity in the naturalistic compared to artificial or control condition, however, seed based functional connectivity showed a shift from anterior to posterior midline functional coupling in the naturalistic condition...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344545/music-improves-subjective-feelings-leading-to-cardiac-autonomic-nervous-modulation-a-pilot-study
#2
Satoshi Kume, Yukako Nishimura, Kei Mizuno, Nae Sakimoto, Hiroshi Hori, Yasuhisa Tamura, Masanori Yamato, Rika Mitsuhashi, Keigo Akiba, Jun-Ichi Koizumi, Yasuyoshi Watanabe, Yosky Kataoka
It is widely accepted that listening to music improves subjective feelings and reduces fatigue sensations, and different kinds of music lead to different activations of these feelings. Recently, cardiac autonomic nervous modulation has been proposed as a useful objective indicator of fatigue. However, scientific considerations of the relation between feelings of fatigue and cardiac autonomic nervous modulation while listening to music are still lacking. In this study, we examined which subjective feelings of fatigue are related to participants' cardiac autonomic nervous function while they listen to music...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28337872/safety-and-pharmacodynamic-mechanism-of-ropivacaine-lumbar-anesthesia-in-cesarean-section
#3
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
https://www.readbyqxmd.com/read/28335471/mobile-phonocardiogram-diagnosis-in-newborns-using-support-vector-machine
#4
Amir Mohammad Amiri, Mohammadreza Abtahi, Nick Constant, Kunal Mankodiya
Phonocardiogram (PCG) monitoring on newborns is one of the most important and challenging tasks in the heart assessment in the early ages of life. In this paper, we present a novel approach for cardiac monitoring applied in PCG data. This basic system coupled with denoising, segmentation, cardiac cycle selection and classification of heart sound can be used widely for a large number of the data. This paper describes the problems and additional advantages of the PCG method including the possibility of recording heart sound at home, removing unwanted noises and data reduction on a mobile device, and an intelligent system to diagnose heart diseases on the cloud server...
March 18, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28325025/comparison-between-users-of-a-new-methodology-for-heart-sound-auscultation
#5
Ana Castro, Pedro Gomes, Sandra S Mattos, Miguel T Coimbra
Auscultation is a routine exam and the first line of screening in heart pathologies. The objective of this study was to assess if using a new data collection system, the DigiScope Collector, with a guided and automatic annotation of heart auscultation, different levels of expertise/experience users could collect similar digital auscultations. Data were collected within the Heart Caravan Initiative (Paraíba, Brasil). Patients were divided into two study groups: Group 1 evaluated by a third year medical student (User 1), and an experienced nurse (User 2); Group 2 evaluated by User 2 and an Information Technology professional (User 3)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28318077/the-effectiveness-of-familiar-auditory-stimulus-on-hospitalized-neonates-physiologic-responses-to-procedural-pain
#6
Elham Azarmnejad, Forogh Sarhangi, Mahrooz Javadi, Nahid Rejeh, Susan Amirsalari, Seyed Davood Tadrisi
Hospitalized neonates usually undergo different painful procedures. This study sought to test the effects of a familiar auditory stimulus on the physiologic responses to pain of venipuncture among neonates in intensive care unit. The study design is quasi-experimental. The randomized clinical trial study was done on 60 full-term neonates admitted to the neonatal intensive care unit between March 20 to June 20, 2014. The neonates were conveniently selected and randomly allocated to the control and the experimental groups...
March 20, 2017: International Journal of Nursing Practice
https://www.readbyqxmd.com/read/28316101/n-terminal-pro-b-type-natriuretic-peptide-and-phonocardiography-in-differentiating-innocent-cardiac-murmurs-from-congenital-cardiac-anomalies-in-asymptomatic-puppies
#7
S M Marinus, H van Engelen, V Szatmári
BACKGROUND: Differentiating innocent cardiac murmurs from murmurs caused by congenital cardiac anomalies can be challenging with auscultation alone in asymptomatic puppies. HYPOTHESIS: Plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) concentrations and phonocardiograms recorded by an electronic stethoscope can differentiate innocent from pathologic cardiac murmurs. ANIMALS: A total of 186 client-owned asymptomatic dogs: 135 Cairn Terriers (age: 45-124 days), 20 adult Cairn Terriers (age: 7...
March 18, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28303271/a-computational-method-for-analyzing-the-biomechanics-of-heart-murmurs
#8
Chi Zhu, Jung-Hee Seo, Hani Bakhshaee, Rajat Mittal
A computational framework consisting of a one-way coupled hemodynamic-acoustic method and a wave-decomposition based post-processing approach is developed to investigate the biomechanics of arterial bruits. This framework is then applied to studying the effect of the shear wave on the generation and propagation of bruits from a modeled stenosed artery. The blood flow in the artery is solved by an immersed boundary method (IBM) based incompressible flow solver. The sound generation and propagation in the blood volume is modeled by the linearized perturbed compressible equations, while the sound propagation through the surrounding tissue is modeled by the linear elastic wave equation...
March 17, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28301784/detecting-the-gallop-the-third-heart-sound-and-its-significance
#9
Subha Ramani, Brittany N Weber
No abstract text is available yet for this article.
March 20, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28299882/systolic-ejection-click-versus-split-first-heart-sound-are-our-ears-deceiving-us
#10
Natalie M Hoeting, Courtney E McCracken, Michael McConnell, Denver Sallee, Glen J Iannucci, Matthew E Oster
OBJECTIVE: Bicuspid aortic valve (BAV) disease is associated with potential lifetime complications, but auscultation of a BAV click is commonly missed or mistaken for a benign split first heart sound. Our objective was to determine whether pediatric cardiologists could reliably distinguish between BAV clicks and benign split first heart sounds. DESIGN: Quality evaluation project using de-identified recordings from an outpatient pediatric cardiology clinic. OUTCOME MEASURES: Twenty-one cardiologists listened to five de-identified recordings of pediatric heart sounds (three with BAV clicks, two with mitral components of benign split first heart sounds) and indicated whether they believed each recording was a BAV or split first heart sound...
March 16, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28295303/separation-and-characterization-of-maternal-cardiac-and-vascular-sounds-in-the-third-trimester-of-pregnancy
#11
Diana Riknagel, Henrik Zimmermann, Richard Farlie, Dorte Hammershøi, Samuel E Schmidt, Morten Hedegaard, Peter Humaidan, Johannes J Struijk
OBJECTIVE: To characterize the vascular sounds of the uteroplacental blood flow obtained by microphones. METHODS: The present retrospective study took place in an anechoic chamber facility at Aalborg University, Aalborg, Denmark, in 2012, and included pregnant participants aged 18-40 years with a singleton pregnancy at 32-36 weeks and a parity of 0-2. Abdominal Doppler ultrasonography was performed bilaterally on the uterine arteries. Subsequently, in the same positions, sound recordings were performed with microphones...
March 13, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28280405/clinical-training-in-medical-students-during-preclinical-years-in-the-skill-lab
#12
Namrata Upadhayay
BACKGROUND: In Nepal, medical education is a high-stakes and stressful course. To enhance learning and minimize students' stress, the conventional method has been replaced by integrated, student-centered learning. As an approach to train effectively, colleges have started establishing skill labs. OBJECTIVES: To evaluate the effectiveness of clinical skill training on exam performance as compared with the conventional teaching practice. Further, to assess the perceptions of students of the importance of skill lab training in college...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28269676/heart-sound-segmentation-using-fractal-decomposition
#13
Rijil Thomas, Ling Lieng Hsi, Soh Cheong Boon, Erry Gunawan
In order to assist cardiac diagnosis by phonocardiography, the automated identification of fundamental heart sounds for heart beat segmentation in a cardiac cycle plays a significant role in signal processing. Recent advancements in signal processing have also shown the potential of multifractality in biomedical applications. Hence, in this paper, the multifractal property of heart sounds is utilized to identify first and second heart sounds. The root mean square (rms) fluctuation used to obtain multifractal/singularity spectrum is used to decompose the heart sound into its own fractally-important components in time domain along with simultaneous Gaussianity test to filter out fundamental components...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269674/classification-of-severity-of-mitral-regurgitation-patients-using-multifractal-analysis
#14
Rijil Thomas, Ling Lieng Hsi, Soh Cheong Boon, Erry Gunawan
Owing to its efficiency and cost effectiveness, auscultation using a stethoscope is the primary diagnosis method preferred by most medical examiners for cardiovascular disease. Phonocardiography (PCG) is the next level of auscultation and an effective analysis technique in cardiology. This paper presents a method to quantify Mitral Regurgitation (MR) using PCG. MR is one of the most common cardiovascular diseases associated with a defect in mitral valve. We analyzed the multifractal nature of heart sounds with murmur followed by classification and clustering using Hurst exponents...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269476/the-effect-of-data-exchange-protocols-on-decision-support-systems-for-heart-sounds
#15
P Gomes, S Faria, M Coimbra
Heart auscultation is one of the basic exams performed during a patient physical examination, but it is also one that has a high skill ceiling. Decision support systems can provide physicians with a tool that can help to reduce the demanding skill requirements of this exam. Nevertheless, this second opinion needs to be delivered in a timely interval in order to be truly useful for a physician. To do this we need not only optimized algorithms, but also a well designed system. In this paper, we have studied how two different data exchange protocols, that define how data should be transferred from an acquisition to a process module, can impact the celerity of delivering second opinion to a physician...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269043/why-should-you-model-time-when-you-use-markov-models-for-heart-sound-analysis
#16
Jorge Oliveira, Theofrastos Mantadelis, Miguel Coimbra
Auscultation is a widely used technique in clinical activity to diagnose heart diseases. However, heart sounds are difficult to interpret because a) of events with very short temporal onset between them (tens of milliseconds) and b) dominant frequencies that are out of the human audible spectrum. In this paper, we propose a model to segment heart sounds using a semi-hidden Markov model instead of a hidden Markov model. Our model in difference from the state-of-the-art hidden Markov models takes in account the temporal constraints that exist in heart cycles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268383/mobileheart-a-mobile-smartphone-based-application-that-supports-and-monitors-coronary-artery-disease-patients-during-rehabilitation
#17
I Frederix, S Sankaran, K Coninx, P Dendale
Conventional center-based cardiac rehabilitation adherence is poor, adversely affecting long-term efficacy. Innovative strategies such as telerehabilitation are perceived as promising alternatives to improve care delivery. This paper presents the results of prior and ongoing work on the design and development of MobileHeart, a telemedical smartphone-based application to be used in secondary prevention for ischemic heart disease patients. Its constituent components are discussed separately, the minimal necessary cardiovascular monitoring requirements are elaborated in more detail...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28266647/heart-rate-responses-induced-by-acoustic-tempo-and-its-interaction-with-basal-heart-rate
#18
Ken Watanabe, Yuuki Ooishi, Makio Kashino
Many studies have revealed the influences of music on the autonomic nervous system (ANS). Since previous studies focused on the effects of acoustic tempo on the ANS, and humans have their own physiological oscillations such as the heart rate (HR), the effects of acoustic tempo might depend on the HR. Here we show the relationship between HR elevation induced by acoustic tempo and individual basal HR. Since high tempo-induced HR elevation requires fast respiration, which is based on sympatho-respiratory coupling, we controlled the participants' respiration at a faster rate (20 CPM) than usual (15 CPM)...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28265249/heart-rate-variability-and-cardiac-vagal-tone-in-psychophysiological-research-recommendations-for-experiment-planning-data-analysis-and-data-reporting
#19
REVIEW
Sylvain Laborde, Emma Mosley, Julian F Thayer
Psychophysiological research integrating heart rate variability (HRV) has increased during the last two decades, particularly given the fact that HRV is able to index cardiac vagal tone. Cardiac vagal tone, which represents the contribution of the parasympathetic nervous system to cardiac regulation, is acknowledged to be linked with many phenomena relevant for psychophysiological research, including self-regulation at the cognitive, emotional, social, and health levels. The ease of HRV collection and measurement coupled with the fact it is relatively affordable, non-invasive and pain free makes it widely accessible to many researchers...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28255599/a-novel-and-cost-effective-method-for-evaluating-cardiopulmonary-auscultation-skills-in-student-physical-therapists
#20
David O Sword, K Jackson Thomas, Holly H Wise, Deborah D Brown
Sophisticated high-fidelity human simulation (HFHS) manikins allow for practice of both evaluation and treatment techniques in a controlled environment in which real patients are not put at risk. However, due to high demand, access to HFHS by students has been very competitive and limited. In the present study, a basic CPR manikin with a speaker implanted in the chest cavity and internet access to a variety of heart and breath sounds was used. Students were evaluated on their ability to locate and identify auscultation sites and heart/breath sounds...
2017: Journal of Allied Health
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