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Non invasive positive pressure

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https://www.readbyqxmd.com/read/29149690/a-modified-montpellier-protocol-for-intubating-intensive-care-unit-patients-is-associated-with-an-increase-in-first-pass-intubation-success-and-fewer-complications
#1
Keith A Corl, Christopher Dado, Ankita Agarwal, Nader Azab, Tim Amass, Sarah J Marks, Mitchell M Levy, Roland C Merchant, Jason Aliotta
BACKGROUND: The Montpellier protocol for intubating patients in the intensive care unit (ICU) is associated with a decrease in intubation-related complications. We sought to determine if implementation of a simplified version of the Montpellier protocol that removed selected components and allowed for a variety of pre-oxygenation modalities increased first-pass intubation success and reduced intubation-related complications. METHODS: A prospective pre/post-comparison of a modified Montpellier protocol in two medical and one medical/surgical/cardiac ICU within a hospital system...
November 10, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29147768/non-invasive-methods-for-estimating-mpap-in-copd-using-cardiovascular-magnetic-resonance-imaging
#2
C S Johns, S Rajaram, D A Capener, C Oram, C Elliot, R Condliffe, D G Kiely, J M Wild, A J Swift
PURPOSE: Pulmonary hypertension (PH) is associated with a poor outcome in chronic obstructive pulmonary disease (COPD) and is diagnosed invasively. We aimed to assess the diagnostic accuracy and prognostic value of non-invasive cardiovascular magnetic resonance (CMR) models. METHODS: Patients with COPD and suspected PH, who underwent CMR and right heart catheter (RHC) were identified. Three candidate models were assessed: 1, CMR-RV model, based on right ventricular (RV) mass and interventricular septal angle; 2, CMR PA/RV includes RV mass, septal angle and pulmonary artery (PA) measurements; 3, the Alpha index, based on RV ejection fraction and PA size...
November 16, 2017: European Radiology
https://www.readbyqxmd.com/read/29144160/high-flow-nasal-cannula-oxygen-in-adults-an-evidence-based-assessment
#3
Matthew G Drake
High flow nasal cannula oxygenation has distinct advantages over other oxygen devices due to its unique effects on respiratory physiology. In particular, adjustable oxygen delivery and flow-dependent carbon dioxide clearance from the upper airway reduce work of breathing and can better match inspiratory demand during respiratory distress. Historically, few studies had evaluated whether the physiologic effects of these devices translated into clinical benefit. However, recent publications have begun to address this knowledge gap...
November 16, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29135135/-ultrasound-indicators-of-the-prostate-urinary-bladder-and-uroflowmetry-parameters-in-the-diagnosis-of-infravesical-obstruction-in-men-with-benign-prostatic-hyperplasia
#4
G G Krivoborodov, N S Efremov, A D Bolotov
RELEVANCE: Benign prostatic hyperplasia (BPH) is one of the most common urologic diseases of males. In patients who failed drug therapy of lower urinary tract symptoms (LUTS) caused by BPH, the most important indication for surgery is the presence of infravesical obstruction (IVO). IVO is detected by pressure-flow studies and is characterized by high detrusor pressure with decreased urinary flow rate. The invasiveness and high cost of this investigation has stimulated a search for non-invasive techniques that could reliably characterize the presence of IVO secondary to BPH...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29130529/anterior-segment-morphology-after-laser-iridotomy-in-primary-angle-closure-suspects
#5
Tarannum Mansoori, Nagalla Balakrishna
PURPOSE: To evaluate and compare the changes in anterior segment parameters in primary angle closure suspects before and after laser peripheral iridotomy and intrasession repeatability of measurements before laser iridotomy as assessed by Scheimpflug-Placido disc topographer. METHODS: Before laser iridotomy, 56 eyes of 56 primary angle closure suspect patients underwent anterior segment analysis with the Sirius Scheimpflug-Placido disc topographer system using glaucoma analysis mode, which was repeated a week after iridotomy...
November 12, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29129161/navigation-through-inter-and-intratumoral-heterogeneity-of-endocrine-resistance-mechanisms-in-breast-cancer-a-potential-role-for-liquid-biopsies
#6
Florian Reinhardt, André Franken, Tanja Fehm, Hans Neubauer
The majority of breast cancers are hormone receptor positive due to the expression of the estrogen and/or progesterone receptors. Endocrine therapy is a major treatment option for all disease stages of hormone receptor-positive breast cancer and improves overall survival. However, endocrine therapy is limited by de novo and acquired resistance. Several factors have been proposed for endocrine therapy failures, which include molecular alterations in the estrogen receptor pathway, altered expression of cell-cycle regulators, autophagy, and epithelial-to-mesenchymal transition as a consequence of tumor progression and selection pressure...
November 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29127555/continuous-monitoring-of-blood-pressure-by-analyzing-the-blood-flow-sound-of-arteriovenous-fistula-in-hemodialysis-patients
#7
Yuka Kamijo, Eiichiro Kanda, Hayato Horiuchi, Noriyuki Kounoue, Keisuke Ono, Keizo Maeda, Akane Yanai, Kazuya Honda, Ryuji Tsujimoto, Mai Yanagi, Yoshitaka Ishibashi, Masayuki Yoshida
BACKGROUND: Patients with end-stage renal disease undergoing hemodialysis (HD) have an elevated risk of cardiovascular disease-related morbidity and mortality. To prevent from such a life-threatening event, the continuous blood pressure (BP) monitoring system may contribute to detect BP decline in early stages and may help to do appropriate disposal. Our research team has introduced an electronic stethoscope (Asahi Kasei Co, Ltd., Tokyo, Japan), which translates sound intensity of Arteriovenous Fistula (AVF) to BP data using the technique of Fourier transformation that can predict continuous BP non-invasively...
November 10, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29121915/clinical-monitoring-of-cardiac-output-assessed-by-transoesophageal-echocardiography-in-anaesthetised-dogs-a-comparison-with-the-thermodilution-technique
#8
Matheus M Mantovani, Denise T Fantoni, André M Gimenes, Jacqueline R de Castro, Patrícia B Flor, Keila K Ida, Denise S Schwartz
BACKGROUND: Cardiac output (CO) is an important haemodynamic parameter to monitor in patients during surgery. However, the majority of the techniques for measuring CO have a limited application in veterinary practice due to their invasive approach and associated complexity and risks. Transoesophageal echocardiography (TEE) is a technique used to monitor cardiac function in human patients during surgical procedures and allows CO to be measured non-invasively. This prospective clinical study aimed to compare the transoesophageal echocardiography using a transgastric view of the left ventricular outflow tract (LVOT) and the thermodilution (TD) technique for the assessment of CO during mean arterial pressure of 65-80 mmHg (normotension) and <65 mmHg (hypotension) in dogs undergoing elective surgery...
November 9, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29118329/aortic-stiffness-improves-the-prediction-of-both-diagnosis-and-severity-of-coronary-artery-disease
#9
Alexandra Yannoutsos, Mathieu Ahouah, Céline Dreyfuss Tubiana, Jirar Topouchian, Michel E Safar, Jacques Blacher
Elective coronography has low diagnostic yield for obstructive coronary artery disease (CAD). We aim to determine whether non-invasive aortic stiffness assessment improves diagnostic accuracy of CAD screening by reducing the number of false-positive results from the cardiac stress test. A cross-sectional study was conducted from January 2013 to September 2014 in our medical center. Electrocardiogram (ECG) stress test coupled with nuclear imaging was performed in 367 consecutive patients routinely followed for myocardial ischemia screening...
November 9, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/29114011/albuterol-delivery-efficiency-in-a-pediatric-model-of-noninvasive-ventilation-with-double-limb-circuit
#10
Jeanne Velasco, Ariel Berlinski
BACKGROUND: Noninvasive ventilation (NIV) is used to treat respiratory failure in patients with concomitant need for aerosol delivery. Limited pediatric data are available on aerosol delivery efficiency, and none at all regarding aerosol delivery efficiency with a double-limb circuit. We compared the effect of position in the double-limb ventilator circuit, types of nebulizer, and ventilator settings on aerosol delivery efficiency in a pediatric model of NIV. We hypothesized that placing a vibrating mesh nebulizer at the ventilator and using the highest inspiratory pressures would increase aerosol delivery efficiency...
November 7, 2017: Respiratory Care
https://www.readbyqxmd.com/read/29106859/sleep-disordered-breathing-in-bardet-biedl-syndrome
#11
Jeffrey C Yeung, Umakanth A Katwa, Gi Soo Lee
INTRODUCTION: Bardet-Biedl Syndrome (BBS) is an autosomal recessive ciliopathy, and obesity is among its defining characteristics. Consequently, the incidence of sleep disordered breathing (SDB) in this population is expected to be high. Due to its relative rarity, the nature of SDB in this population is poorly described. The objective of this study was to review a single institutional experience in the assessment and management of SDB in patients with BBS. METHODS: Retrospective chart review of tertiary care, academic pediatric hospital...
November 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29103472/performance-of-computed-tomography-derived-pulmonary-vasculature-metrics-in-the-diagnosis-and-haemodynamic-assessment-of-pulmonary-arterial-hypertension
#12
Kaoruko Shimizu, Ichizo Tsujino, Takahiro Sato, Ayako Sugimoto, Toshitaka Nakaya, Taku Watanabe, Hiroshi Ohira, Yoichi M Ito, Masaharu Nishimura
BACKGROUND: Few studies have addressed the value of combining computed tomography-derived pulmonary vasculature metrics for the diagnosis and haemodynamic evaluation of pulmonary arterial hypertension (PAH). MATERIALS AND METHODS: We measured three computed tomography parameters for the pulmonary artery, peripheral vessels, and pulmonary veins: the ratio of the diameter of the pulmonary artery to the aorta (PA/Ao), the cross-sectional area of small pulmonary vessels <5mm(2) as a percentage of total lung area (%CSA<5), and the diameter of the right inferior pulmonary vein (PVD)...
November 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/29102503/maternal-hemodynamics-a-method-to-classify-hypertensive-disorders-of-pregnancy
#13
Enrico Ferrazzi, Tamara Stampalija, Lorenzo Monasta, Daniela Di Martino, Sharona Vonck, Wilfried Gyselaers
BACKGROUND: The classification of hypertensive disorders of pregnancy (HDP) is based on the time at the onset of hypertension, proteinuria, and other associated complications. Maternal hemodynamic interrogation in HDP considers not only the peripheral blood pressure but also the entire cardiovascular system, and it might help to classify the different clinical phenotypes of this syndrome. OBJECTIVES: This study aimed to examine cardiovascular parameters in a cohort of patients affected by HDP according to the clinical phenotypes that prioritize fetoplacental characteristics and not the time at onset of HDP...
November 1, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29102174/spleen-stiffness-is-positively-correlated-with-hvpg-and-decreases-significantly-after-tips-implantation
#14
Matthias Buechter, Paul Manka, Jens M Theysohn, Marcus Reinboldt, Ali Canbay, Alisan Kahraman
BACKGROUND: Transjugular intrahepatic portosystemic shunt (TIPS) is indicated in patients with decompensated portal hypertension (PH). Hepatic venous pressure gradient (HVPG) is considered gold standard for assessment of PH. Because HVPG measurement is invasive, non-invasive methods for evaluating severity of PH are warranted. PATIENTS AND METHODS: We retrospectively correlated spleen stiffness as measured by FibroScan with HVPG in patients who underwent TIPS. Twenty-four patients with spleen stiffness measurement (SSM) one day before (D-1), one day after (D+1) and 28 days after TIPS (D+28) were included...
October 10, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/29072676/comparison-of-sprinting-vs-non-sprinting-to-wean-nasal-continuous-positive-airway-pressure-off-in-very-preterm-infants
#15
N Eze, D Murphy, V Dhar, V K Rehan
OBJECTIVE: Though nasal continuous positive airway pressure (NCPAP) is commonly used for non-invasive neonatal respiratory support, the optimal method of weaning NCPAP is not established. In this prospective, two-center randomized control trial we hypothesize that gradually increasing spontaneous breathing time off NCPAP increases successful weaning from NCPAP in infants born <31 weeks gestational age. STUDY DESIGN: Infants were randomized to one of the two NCPAP weaning protocols, a sprinting, that is, gradually increasing spontaneous breathing time off CPAP, protocol vs a non-sprinting (weaning pressure down) protocol...
October 26, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/29071145/a-novel-algorithm-for-the-non-invasive-detection-of-bladder-outlet-obstruction-in-men-with-lower-urinary-tract-symptoms
#16
Fawzy Farag, Mohamed Elbadry, Mohammed Saber, Abdelbasset A Badawy, John Heesakkers
OBJECTIVE: To determine the ability of bladder wall thickness (BWT) in combination with non-invasive variables to distinguish patients with bladder outlet obstruction (BOO). PATIENTS AND METHODS: Patients completed the International Prostate Symptom Score (IPSS) questionnaire and prostate size was measured by transrectal ultrasonography (US). Pressure-flow studies were performed to determine the urodynamic diagnosis. BWT was measured at 250-mL bladder filling using transabdominal US...
June 2017: Arab Journal of Urology
https://www.readbyqxmd.com/read/29060676/gamma-variate-modeling-of-indicator-dilution-curves-in-electrical-impedance-tomography
#17
Benjamin Hentze, Thomas Muders, Henning Luepschen, Steffen Leonhardt, Christian Putensen, Marian Walter
Electrical impedance tomography (EIT) is a non-invasive imaging technique, that can be used to monitor regional lung ventilation (V̇) in intensive care units (ICU) at bedside. This work introduces a method to extract regional lung perfusion (Q̇) from EIT image streams in order to quantify regional gas exchange in the lungs. EIT data from a single porcine animal trial, recorded during injection of a contrast agent (NaCl 10%) into a central venous catheter (CVC), are used for evaluation. Using semi-negative matrix factorization (Semi-NMF) a set of source signals is extracted from the data...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060215/regression-analysis-and-transfer-function-in-estimating-the-parameters-of-central-pulse-waves-from-brachial-pulse-wave
#18
Chai Rui, Li Si-Man, Xu Li-Sheng, Yao Yang, Hao Li-Ling
This study mainly analyzed the parameters such as ascending branch slope (A_slope), dicrotic notch height (Hn), diastolic area (Ad) and systolic area (As) diastolic blood pressure (DBP), systolic blood pressure (SBP), pulse pressure (PP), subendocardial viability ratio (SEVR), waveform parameter (k), stroke volume (SV), cardiac output (CO) and peripheral resistance (RS) of central pulse wave invasively and non-invasively measured. These parameters extracted from the central pulse wave invasively measured were compared with the parameters measured from the brachial pulse waves by a regression model and a transfer function model...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059983/ex-vivo-animal-model-assessment-of-a-non-invasive-system-for-loss-of-resistance-detection-during-epidural-blockade
#19
M Carassiti, R Quarta, A Mattei, M Tesei, P Saccomandi, C Massaroni, R Setola, E Schena
During recent decades epidural analgesia has gained widespread recognition in many applications. In this complex procedure, anaesthetist uses a specific needle to inject anesthetic into the epidural space. It is crucial the appropriate insertion of the needle through inhomogeneous tissues placed between the skin and the epidural space to minimize anesthetic-related complications (e.g., nausea, headache, and dural puncture). Usually, anaesthetists perform the procedure without any supporting tools, and stop pushing the syringe when they sense a loss of resistance (LOR)...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29054974/laryngeal-closure-impedes-non-invasive-ventilation-at-birth
#20
Jessica R Crawshaw, Marcus J Kitchen, Corinna Binder-Heschl, Marta Thio, Megan J Wallace, Lauren T Kerr, Charles C Roehr, Katie L Lee, Genevieve A Buckley, Peter G Davis, Andreas Flemmer, Arjan B Te Pas, Stuart B Hooper
BACKGROUND: Non-invasive ventilation is sometimes unable to provide the respiratory needs of very premature infants in the delivery room. While airway obstruction is thought to be the main problem, the site of obstruction is unknown. We investigated whether closure of the larynx and epiglottis is a major site of airway obstruction. METHODS: We used phase contrast X-ray imaging to visualise laryngeal function in spontaneously breathing premature rabbits immediately after birth and at approximately 1 hour after birth...
October 20, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
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