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Noninvasive monitoring

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https://www.readbyqxmd.com/read/28922874/noninvasive-transfontanelle-monitoring-of-the-intracerebral-pressure-in-comparison-with-an-invasive-intradural-intracranial-pressure-device-a-prospective-study
#1
Bedjan Behmanesh, Marco Bartels, Florian Gessler, Natalie Filmann, Volker Seifert, Matthias Setzer, Thomas M Freiman
BACKGROUND: We previously introduced a novel noninvasive technique of intracranial pressure (ICP) monitoring in children with open fontanelles. OBJECTIVE: To compare the ICP obtained by our new technique to the ICP derived from an intradurally implanted ICP measurement device (external ventricular drain, subdural ICP device). METHODS: Children with open fontanelles and need of intracranial monitoring were included in this study. A standard ICP probe was placed upon the frontal fontanelle and data were compared with the values recorded by an already invasively implanted subdural ICP technique...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28920806/accuracy-of-noninvasive-anesthetic-monitoring-in-the-anesthetized-giraffe-giraffa-camelopardalis
#2
Mads F Bertelsen, Carsten Grøndahl, George F Stegmann, Cathrine Sauer, Niels H Secher, J Michael Hasenkam, Mads Damkjær, Christian Aalkjær, Tobias Wang
This study evaluated the accuracy of pulse oximetry, capnography, and oscillometric blood pressure during general anesthesia in giraffes (Giraffa camelopardalis). Thirty-two giraffes anesthetized for physiologic experiments were instrumented with a pulse oximeter transmittance probe positioned on the tongue and a capnograph sampling line placed at the oral end of the endotracheal tube. A human size 10 blood pressure cuff was placed around the base of the tail, and an indwelling arterial catheter in the auricular artery continuously measured blood pressure...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28917289/imaging-of-convective-drug-delivery-in-the-nervous-system
#3
REVIEW
Russell R Lonser
Convection-enhanced delivery permits the direct homogeneous delivery of small- and large-molecular-weight putative therapeutics to the nervous system in a manner that bypasses the blood-nervous system barrier. The development of co-infused surrogate imaging tracers (for computed tomography and MRI) allows for the real-time, noninvasive monitoring of infusate distribution during convective delivery. Real-time image monitoring of convective distribution of therapeutic agents insures that targeted structures/nervous system regions are adequately perfused, enhances safety, informs efficacy (or lack thereof) of putative agents, and provides critical information regarding the properties of convection-enhanced delivery in normal and various pathologic tissue states...
October 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/28917284/neurosurgical-applications-of-high-intensity-focused-ultrasound-with-magnetic-resonance-thermometry
#4
REVIEW
Rivka R Colen, Iman Sahnoune, Jeffrey S Weinberg
Magnetic resonance guided focused ultrasound surgery (MRgFUS) has potential noninvasive effects on targeted tissue. MRgFUS integrates MRI and focused ultrasound surgery (FUS) into a single platform. MRI enables visualization of the target tissue and monitors ultrasound-induced effects in near real-time during FUS treatment. MRgFUS may serve as an adjunct or replace invasive surgery and radiotherapy for specific conditions. Its thermal effects ablate tumors in locations involved in movement disorders and essential tremors...
October 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/28916326/are-wireless-electronic-stethoscopes-useful-for-respiratory-rate-monitoring-during-intravenous-sedation
#5
Keiko Morimoto, Yukako Tsutsui, Shin Ogura, Katsuhisa Sunda
PURPOSE: Wireless stethoscopes can measure respiratory rate noninvasively and continuously, but there are no reports of their use during dental treatment. This study evaluated the usefulness of wireless stethoscopes during dental procedures requiring intravenous sedation (IVS). MATERIALS AND METHODS: This study was a prospective cohort study. The study sample consisted of dental patients who received IVS by propofol or midazolam administration at the Nippon Dental University Hospital (Tokyo, Japan)...
August 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28916029/oral-mucosa-biology-and-salivary-biomarkers
#6
Rosie Qin, Andrea Steel, Nasim Fazel
Although the surfaces of both the skin and oral mucosa are protected by squamous epithelial cells and fall within the scope of dermatologic practice, the oral cavity contains highly specialized structures and functions distinct from other skin biology and pathologic conditions and are also the purview of clinicians who care for patients with skin and mucosal diseases. We describe the distinct features of the tongue, mucosa, and salivary glands. In particular, we examine the composition and function of the saliva, with special focus on salivary biomarkers...
September 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28915393/the-comparative-effectiveness-of-noninvasive-and-invasive-ventilation-in-patients-with-pneumonia
#7
Mihaela S Stefan, Aruna Priya, Penelope S Pekow, Tara Lagu, Jay S Steingrub, Nicholas S Hill, Brian H Nathanson, Peter K Lindenauer
PURPOSE: To compare the outcomes of patients hospitalized with pneumonia treated with noninvasive ventilation (NIV) and invasive mechanical ventilation (IMV). MATERIALS AND METHODS: Using the HealthFacts multihospital electronic medical record database, we included patients hospitalized with a diagnosis of pneumonia and treated with NIV or IMV. We developed a propensity model for receipt of initial NIV and assessed the outcomes in a propensity-matched cohort, and in a covariate adjusted and propensity score weighted models...
May 23, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28913915/home-use-remotely-supervised-and-remotely-controlled-transcranial-direct-current-stimulation-a-systematic-review-of-the-available-evidence
#8
REVIEW
Ulrich Palm, Ulrike Kumpf, Nora Behler, Linda Wulf, Beatrice Kirsch, Jana Wörsching, Daniel Keeser, Alkomiet Hasan, Frank Padberg
OBJECTIVES: Transcranial direct current stimulation (tDCS) is gaining growing importance in the treatment of neurological and psychiatric disorders and is currently investigated for home-based and remotely supervised applications. METHODS: Here, we systematically review the available evidence from a database search (PubMed, ICTRP, clinicaltrials.gov) from January 2000 to May 2017. RESULTS: We detected 22 original research papers, trial protocols or trial registrations dealing with tDCS as an add-on intervention to cognitive or physiotherapeutic intervention...
September 15, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28904531/potential-therapeutic-mechanisms-and-tracking-of-transplanted-stem-cells-implications-for-stroke-treatment
#9
REVIEW
Yanhong Zhang, Honghong Yao
Stem cell therapy is a promising potential therapeutic strategy to treat cerebral ischemia in preclinical and clinical trials. Currently proposed treatments for stroke employing stem cells include the replacement of lost neurons and integration into the existing host circuitry, the release of growth factors to support and promote endogenous repair processes, and the secretion of extracellular vesicles containing proteins, noncoding RNA, or DNA to regulate gene expression in recipient cells and achieve immunomodulation...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28903450/clinical-and-biological-significance-of-circulating-tumor-cells-circulating-tumor-dna-and-exosomes-as-biomarkers-in-colorectal-cancer
#10
REVIEW
Shiyu Jia, Rui Zhang, Ziyang Li, Jinming Li
Colorectal cancer (CRC) has been the fourth leading cause of cancer-related mortality worldwide. Owing to clonal evolution and selection, CRC treatment needs multimodal therapeutic approaches and due monitoring of tumor progression and therapeutic efficacy. Liquid biopsy, involving the use of circulating tumor cells (CTCs), circulating tumor DNA (ctDNA), and exosomes, may offer a promising noninvasive alternative for diagnosis and for real-time monitoring of tumor evolution and therapeutic response compared to traditional tissue biopsy...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28901052/noninvasive-three-dimensional-full-field-body-sensor-for-surface-deformation-monitoring-of-human-body-in-vivo
#11
Zhenning Chen, Xinxing Shao, Xiaoyuan He, Jialin Wu, Xiangyang Xu, Jinlin Zhang
Noninvasive, three-dimensional (3-D), full-field surface deformation measurements of the human body are important for biomedical investigations. We proposed a 3-D noninvasive, full-field body sensor based on stereo digital image correlation (stereo-DIC) for surface deformation monitoring of the human body in vivo. First, by applying an improved water-transfer printing (WTP) technique to transfer optimized speckle patterns onto the skin, the body sensor was conveniently and harmlessly fabricated directly onto the human body...
September 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28901051/noninvasive-submental-fat-reduction-using-colder-cryolipolysis
#12
Hector Leal Silva, Esther Carmona Hernandez, Mariana Grijalva Vazquez, Sebastian Leal Delgado, Angel Perez Blanco
BACKGROUND: Cryolipolysis has shown to significantly reduce localized subcutaneous fat, including submental fat. Temperatures below -11°C have not been used to treat the submental region. OBJECTIVE: The purpose of this study was to evaluate safety and efficacy of Cryolipolysis for noninvasive reduction of submental fat using lower temperatures and reduced treatment time. METHODS: A small volume applicator was used to treat 15 subjects, using a noninvasive tissue cooling device (CoolSculpting System, ZELTIQ Aesthetics, Pleasanton, CA, USA) during 45 and 30 minutes at -12 and -15°C, respectively, to induce reduction of submental fat...
September 12, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28894607/evaluation-of-cholinergic-deficiency-in-preclinical-alzheimer-s-disease-using-pupillometry
#13
Shaun Frost, Liam Robinson, Christopher C Rowe, David Ames, Colin L Masters, Kevin Taddei, Stephanie R Rainey-Smith, Ralph N Martins, Yogesan Kanagasingam
Cortical cholinergic deficiency is prominent in Alzheimer's disease (AD), and published findings of diminished pupil flash response in AD suggest that this deficiency may extend to the visual cortical areas and anterior eye. Pupillometry is a low-cost, noninvasive technique that may be useful for monitoring cholinergic deficits which generally lead to memory and cognitive disorders. The aim of the study was to evaluate pupillometry for early detection of AD by comparing the pupil flash response (PFR) in AD (N = 14) and cognitively normal healthy control (HC, N = 115) participants, with the HC group stratified according to high (N = 38) and low (N = 77) neocortical amyloid burden (NAB)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28894378/initial-experience-of-correlating-diffusion-spectral-parameters-with-histopathologic-indexes-in-murine-colorectal-tumor-homografts
#14
Xiao-Yan Zhang, Xiao-Ting Li, Jia Sun, Ying-Shi Sun
PURPOSE: To determine the correlation between continuously distributed diffusion-weighted image (DWI)-derived parameters and histopathologic indexes. METHODS: Fifty-four mice bearing HCT-116 colorectal tumors were included for analysis; 12 mice were used for continuous observation, and the other 42 mice were used for break-point observation. All mice were randomly divided into radiotherapy and non-radiotherapy groups. Optical imaging and MRI were performed at different time points according to radiotherapy regimen (baseline, 24 h, 48 h, 72 h, 7 d, 14 d, and 28 d)...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28893511/near-infrared-spectroscopy-a-tool-for-solid-state-characterization
#15
Rahul B Chavan, Nallamothu Bhargavi, Anurag Lodagekar, Nalini R Shastri
Physical characterization of solid drugs is of paramount importance because the biopharmaceutical properties and/or processing behavior can be altered. Early identification and monitoring of solid-state transformation is a crucial requirement for pharmaceutical product development. In combination with chemometrics, a nondestructive and noninvasive technique such as near infrared spectroscopy (NIR) is a powerful tool for solid-state characterization. The main focus of this review is the application of NIR for qualitative and quantitative analysis of solid forms of drugs and excipients...
September 8, 2017: Drug Discovery Today
https://www.readbyqxmd.com/read/28889388/quantification-of-micrornas-in-urine-derived-specimens
#16
Susanne Fuessel, Andrea Lohse-Fischer, Dana Vu Van, Karsten Salomo, Kati Erdmann, Manfred P Wirth
MicroRNAs are small noncoding RNAs which regulate the expression of genes involved in a multitude of cellular processes. Dysregulation of microRNAs and-in consequence-of the affected pathways is frequently observed in numerous pathologies including cancers. Therefore, tumor-related alterations in microRNA expression and function can reflect molecular processes of tumor onset and progression qualifying microRNAs as potential diagnostic and prognostic biomarkers.In particular, microRNAs with differential expression in bladder cancer (BCa) might represent promising tools for noninvasive tumor detection in urine...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28887503/stretchable-conductive-elastomer-for-wireless-wearable-communication-applications
#17
Zhibo Chen, Jingtian Xi, Wei Huang, Matthew M F Yuen
Wearable devices have provided noninvasive and continuous monitoring of physiological parameters in healthcare applications. However, for the comfortable applications of wearable devices on human body, two key requirements are to replace conventional bulky devices into soft and deformable ones and to have wireless wearable communication. In this paper we present a simple, low-cost and highly efficient all-elastomeric conductor that can be used in a soft radio-frequency (RF) transmission line and antenna. We show a stretchable transmission line and two stretchable antennas fabricated with conventional screen printing...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28886803/optical-coherence-tomography-in-the-diagnosis-of-skin-cancer
#18
REVIEW
Amanda Levine, Katie Wang, Orit Markowitz
Optical coherence tomography (OCT) has emerged as a novel noninvasive imaging device that allows for the real-time, in vivo, cross-sectional imaging of skin morphology. OCT has increased imaging depth and field of view compared with reflectance confocal microscopy, at the cost of decreased cellular resolution. Frequency domain OCT, dynamic OCT (D-OCT), and high-definition OCT (HD-OCT) are useful in the diagnosis, treatment planning, and treatment monitoring of nonmelanoma skin cancers. Research is currently underway to assess the utilization of these devices in distinguishing between malignant and benign melanocytic lesions based on vascular patterns on D-OCT and cellular information on HD-OCT...
October 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28885215/hyperspectral-imaging-as-a-novel-diagnostic-tool-in-microcirculation-of-wounds
#19
Georg Daeschlein, Inga Langner, Thomas Wild, Sebastian von Podewils, Claudia Sicher, Thomas Kiefer, Michael Jünger
Monitoring of perfusion is a cornerstone in surgery, phlebology and basic science to proof wound healing by interventions. In chronic wound management it is of utmost importance to realize and parametrize wound bed perfusion to verify actual, and plan further treatment by noninvasive diagnostics. Up to now monitoring is based on visual inspection of wounds as conventionally practiced over more than decades. The main problems of visual inspection are the lack of standardization and comparability because of interindividual variations...
September 4, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28884999/near-infrared-trigged-stimulus-responsive-photonic-crystals-with-hierarchical-structures
#20
Tao Lu, Hui Pan, Jun Ma, Yao Li, Shenmin Zhu, Di Zhang
Stimuli-responsive photonic crystals (PCs) trigged by light would provide a novel intuitive and quantitative method for noninvasive detection. Inspired by the flame-detecting aptitude of fire beetles and the hierarchical photonic structures of butterfly wings, we herein developed near-infrared stimuli-responsive PCs through coupling photothermal Fe3O4 nanoparticles with thermoresponsive poly(N-isopropylacrylamide) (PNIPAM), with hierarchical photonic structured butterfly wing scales as the template. The nanoparticles within 10 seconds transferred near-infrared radiation into heat that triggered the phase transition of PNIPAM; this almost immediately posed an anticipated effect on the PNIPAM refractive index, and resulted in a composite spectrum change of ~26 nm, leading to the direct visual readout...
September 8, 2017: ACS Applied Materials & Interfaces
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