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Oxygen saturation

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https://www.readbyqxmd.com/read/29452031/prehospital-cervical-spine-motion-immobilization-versus-spine-motion-restriction
#1
Erik E Swartz, W Steven Tucker, Matthew Nowak, Jason Roberto, Amy Hollingworth, Laura C Decoster, Thomas W Trimarco, Jason P Mihalik
OBJECTIVE: This study aims to evaluate the efficacy of two different spinal immobilization techniques on cervical spine movement in a simulated prehospital ground transport setting. METHODS: A counterbalanced crossover design was used to evaluate two different spinal immobilization techniques in a standardized environment. Twenty healthy male volunteers (age = 20.9 ± 2.2 yr) underwent ambulance transport from a simulated scene to a simulated emergency department setting in two separate conditions: utilizing traditional spinal immobilization (TSI) and spinal motion restriction (SMR)...
February 16, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29447940/the-relationship-between-plasma-vascular-endothelial-growth-factor-and-erythrocyte-2-3-bisphosphoglycerate-the-putative-role-of-chronic-hypoxia
#2
B K Puri, J A Monro
The non-invasive assessment of chronic tissue hypoxia is difficult. Pulse oximetry only allows the peripheral oxygen saturation to be measured, while the detection of hyperlactataemia needs to take into account the fact that the accumulation of lactic acid may result from several causes other than prolonged tissue hypoxia. Arterial blood oxygen measurement is invasive and often does not give a good indication of the level of tissue hypoxia. Other suggested methods include the use of positron emission tomography, magnetic resonance T 2 ∗ relaxation time measurement, photoacoustics and high-frequency ultrasound...
March 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29447932/determining-the-venous-oxygen-reservoir-a-novel-hypothetical-approach-to-titration-of-supplemental-oxygen-in-preterm-newborns
#3
Chad C Andersen, Nicolette A Hodyl, Nina M Ziegler, Michael J Stark
While normal oxygen saturation is commonly thought to be a marker of normal oxygenation, cutaneous saturation does not account for the sufficiency of oxygen within each cell or that of the system overall. Rather, cutaneous oximetry simply defines the saturation of haemoglobin (Hb) with oxygen in a pulsatile vessel. Assessment of sufficiency is best determined by measurement of the amount of oxygen left over following aerobic respiration. This left over oxygen is 'stored' on Hb in the venous compartment and can be calculated as the venous oxygen content...
March 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29447889/correlations-between-pediatric-obstructive-sleep-apnea-and-longitudinal-growth
#4
Do-Yang Park, Ji Ho Choi, So Young Kang, Jinjoo Han, Hun Yi Park, Jin Soon Hwang, Jae Ho Cho, Min Hyuk Cho, Hyun Jun Kim
OBJECTIVES: Pediatric obstructive sleep apnea has a relatively high prevalence and has various negative health and behavioral consequences. Among the various complications of pediatric obstructive sleep apnea, growth disturbance is still controversial. METHOD: 745 pediatric subjects with obstructive sleep apnea diagnosed by in-lab polysomnography were enrolled, after excluding ineligible subjects with abnormal growth related factors. Height, weight, and BMI of enrolled patients were measured and statistically converted to z-scores, and the converted data were analyzed statistically with the polysomnographic results...
March 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29447819/lingual-tonsillectomy-in-children-with-down-syndrome-is-it-safe
#5
Jonathan R Skirko, Emily L Jensen, Norman R Friedman
OBJECTIVE: Evaluate peri-operative course and morbidity in children with Down syndrome (DS) who underwent a lingual tonsillectomy (LT) for residual obstructive sleep apnea (rOSA). METHODS: Retrospective case series for children with DS who underwent LT for rOSA from April 2011 to July 2016. Our primary outcomes were length of stay, readmission and complications. Surgical effectiveness was evaluated by change in the obstructive apnea-hypopnea-index(OAHI) and oxygen saturation nadir...
February 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29446755/classification-methods-to-detect-sleep-apnea-in-adults-based-on-respiratory-and-oximetry-signals-a-systematic-review
#6
Md Bashir Uddin, Chin-Moi Chow, Steven W Su
Sleep apnea (SA), a common sleep disorder, can significantly decrease the quality of life, and is closely associated with major health risk such as cardiovascular disease, sudden death, depression, and hypertension. Normal diagnostic process of SA using polysomnography (PSG) is costly and time consuming. In addition, the accuracy of different classification methods to detect SA varies with the use of different physiological signals. If an effective, reliable, and accurate classification method is developed, then the diagnosis of SA and their associated treatment will be time-efficient and economical...
February 15, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29444807/hypoxic-challenge-testing-fitness-to-fly-in-children-with-complex-congenital-heart-disease
#7
Nitha N Naqvi, Victoria L Doughty, Luke Starling, Rodney C Franklin, Simon Ward, Piers E F Daubeney, Ian M Balfour-Lynn
OBJECTIVE: Commercial airplanes fly with an equivalent cabin fraction of inspired oxygen of 0.15, leading to reduced oxygen saturation (SpO 2 ) in passengers. How this affects children with complex congenital heart disease (CHD) is unknown. We conducted Hypoxic Challenge Testing (HCT) to assess need for inflight supplemental oxygen. METHODS: Children aged <16 years had a standard HCT. They were grouped as (A) normal versus abnormal baseline SpO 2 (≥95% vs <95%) and (B) absence versus presence of an actual/potential right-to-left (R-L) shunt...
February 14, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29444748/aortopulmonary-collaterals-in-neonates-with-d-transposition-of-the-great-arteries-clinical-significance-early-after-arterial-switch-operation
#8
Alexandra Wipf, Martin Christmann, Susanne Navarini-Meury, Hitendu Dave, Daniel Quandt, Walter Knirsch, Oliver Kretschmar
OBJECTIVES: Purpose of this study is to evaluate the clinical significance of major aortopulmonary collateral arteries (MAPCAs) during the early postoperative course after arterial switch operation (ASO) in d-transposition of the great arteries (dTGA). METHODS: Clinical data of 98 patients with simple dTGA between January 2007 and December 2016 at the University Children's Hospital Zurich, Switzerland were analyzed retrospectively. RESULTS: 37 from 98 patients (38%) required cardiac catheterization (CC) due to an early complicated postoperative course or difficult coronary transfer due to special coronary anatomy...
February 2, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29444562/fluid-resuscitation-during-early-sepsis-a-need-for-individualization
#9
Mathieu JOZWIAKì, Olfa Hamzaoui, Xavier Monnet, Jean-Louis Teboul
The prognosis of septic shock is tightly linked to the earliness of both appropriate antibiotic therapy and early hemodynamic resuscitation. This latter is essentially based on fluid and vasopressors administration. The step-by-step strategy, called "early goal-directed therapy" (EGDT) developed in 2001 and endorsed by the Surviving Sepsis Campaign (SSC) between 2004 and 2016 is no longer recommended. Indeed, recent multicenter randomized clinical trials showed no reduction in all-cause mortality, duration of organ support and in-hospital length of stay with EGDT in comparison with standard care...
February 14, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29443767/effect-of-oxycodone-hydrochloride-combined-with-flurbiprofen-axetil-for-intravenous-patient-controlled-analgesia-in-lower-abdominal-patients-a-randomized-trial
#10
Xiaobing Xiang, Xiaohong Yuan, Yanhong Lian, Jun Fang, Yingli Wu
BACKGROUND: Problems like postoperative pain are still common phenomena after general anesthesia. Oxycodone hydrochloride is a semisynthetic opioid with a safe and excellent therapeutic effect on visceral pain. Flurbiprofen axetil has the efficacy of targeted analgesia. We hypothesize that different doses of oxycodone hydrochloride combined with flurbiprofen axetil would generate great results on postoperative intravenous analgesia in lower abdominal patients. METHODS: In the clinical trial, 90 American Society of Anesthesiologists I or II patients scheduled for elective general anesthesia were randomly divided into 3 groups, 30 cases in each group...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29443059/in-vivo-electrophysiological-measurement-of-the-rat-ulnar-nerve-with-axonal-excitability-testing
#11
Brandon M Wild, Renée Morris, Mihai Moldovan, Christian Krarup, Arun V Krishnan, Ria Arnold
Electrophysiology enables the objective assessment of peripheral nerve function in vivo. Traditional nerve conduction measures such as amplitude and latency detect chronic axon loss and demyelination, respectively. Axonal excitability techniques "by threshold tracking" expand upon these measures by providing information regarding the activity of ion channels, pumps and exchangers that relate to acute function and may precede degenerative events. As such, the use of axonal excitability in animal models of neurological disorders may provide a useful in vivo measure to assess novel therapeutic interventions...
February 6, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29442057/inguinal-hernia-repair-in-day-surgery-the-role-of-mac-monitored-anesthesia-care-with-remifentanil
#12
P Palumbo, S Usai, C Amatucci, B Perotti, L Ruggeri, G Illuminati, G Tellan
BACKGROUND: The extension of indications for procedures in a Day Surgery (DS) setting has led to changes in the anesthetic and surgical treatment of Inguinal Hernias (IH). According to the recommendations of the European Hernia Society, the treatment of IH in DS units should be performed under Monitored Anesthesia Care (MAC). PATIENTS AND METHODS: 960 patients underwent IH repairs over a period of 24 months. The patients were randomly divided into two groups: R (remifentanil) and F (fentanyl); the group F was considered as a control group...
November 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/29439251/low-cerebral-oxygenation-is-associated-with-cognitive-impairment-in-chronic-hemodialysis-patients
#13
Lucie Kovarova, Anna Valerianova, Tereza Kmentova, Jana Lachmanova, Zuzana Hladinova, Jan Malik
BACKGROUND/AIMS: High rates of cognitive impairment (CI) are an alarming problem in patients undergoing chronic hemodialysis (HD). Its pathophysiology remains unclear and there are indications that brain ischemia might be one of the key causes. Cerebral tissue oxygenation, as measured by near-infrared spectroscopy, is known to be decreased in HD patients. However, it is unknown whether CI is associated or not associated with lower cerebral oxygenation in these patients. The primary aim of our study was to probe this possible association...
February 13, 2018: Nephron
https://www.readbyqxmd.com/read/29438144/long-term-scar-quality-after-treatment-of-standardized-partial-thickness-skin-graft-donor-sites
#14
Alexandra Schulz, Irene Rothermund, Rolf Lefering, Paul Christian Fuchs, Jennifer Schiefer
BACKGROUND: The long-term aesthetic appearance of scars is of great importance to patients. Biobrane (Smith and Nephew, Fort Worth, Texas), a biosynthetic skin dressing, is a successfully established dressing for the treatment of superficial wounds. A new silk barrier dressing (Dressilk; Prevor, Moulin de Verville, France) has also shown good results in wound healing. This study evaluated the long-term scar quality of superficial wounds treated with these dressings. METHODS: From February 2012 to May 2013, 11 patients with burns in need of skin grafting received donor site treatment...
March 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29434789/effects-of-pumpless-extracorporeal-lung-assist-on-hemodynamics-gas-exchange-and-inflammatory-cascade-response-during-experimental-lung-injury
#15
Zhihai Ju, Jinhui Ma, Chen Wang, Jie Yu, Yeru Qiao, Feilong Hei
Pumpless extracorporeal lung assist (pECLA) has been reported to efficiently remove the systemic CO 2 production and provide mild to moderate oxygenation, thereby allowing for ventilator settings and modes prioritizing oxygenation and lung protection. However, an adequate bypass flow, the capacity to provide respiratory support and the effect on the inflammatory cascade response and tissue perfusion require further study to be determined. After induction of acute lung injury (ALI) by oleic acid injection, pECLA was implemented in 12 anaesthetized and mechanically ventilated dogs for 48 h...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29433137/-the-invisibles-project-meeting-and-collaboration-of-public-health-and-volunteering-the-influenza-vaccination-experience-to-promote-the-health-of-the-socially-vulnerable-and-economically-disadvantaged-population
#16
Loris Pagano, Caterina Pizzutelli, Maria Maddalena Matarazzo, Gaia Monteleone, Damiano Pizzuti
Migration and the current European socioeconomic conditions necessitate an evaluation/assessment, as detailed as possible, of the spread of seasonal infectious diseases in order to reduce inequalities in the healthcare system. The "Scuola di Formazione in Medicina Generale" of Lazio, in collaboration with the Community of Sant'Egidio of Rome, organized an influenza/flu vaccination campaign for homeless people, migrants and the poor in order to check their health conditions and prevent the spread of the most common infectious diseases...
September 2017: Igiene e Sanità Pubblica
https://www.readbyqxmd.com/read/29432891/estimation-of-achievable-oxygen-consumption-following-transfusion-with-rejuvenated-red-blood-cells
#17
Amudan J Srinivasan, Kyle Kausch, Collin Inglut, Alan Gray, Matthew Landrigan, Jessica L Poisson, Jacob N Schroder, Ian J Welsby
OBJECTIVE: Erythrocyte storage induces a non-physiological increase in hemoglobin-oxygen affinity (quantified by low p50, the oxygen tension at 50% hemoglobin saturation), which can be restored through biochemical rejuvenation. The objective was to mathematically model the impact of transfusing up to three standard allogeneic units or rejuvenated units on oxygen delivery (DO 2 ) and oxygen consumption (VO 2 ). METHODS: Oxygen dissociation curves were generated from AS-1 RBC leukoreduced units (n = 7) before and after rejuvenation following manufacturer's instructions...
February 9, 2018: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29432783/effect-of-target-temperature-management-at-32-34%C3%A2-%C3%A2-c-in-cardiac-arrest-patients-considering-assessment-by-regional-cerebral-oxygen-saturation-a-multicenter-retrospective-cohort-study
#18
Yuka Nakatani, Takeo Nakayama, Kei Nishiyama, Yoshimitsu Takahashi
AIM: Target temperature management (TTM) is used in comatose post-cardiac arrest patients, but the recommended temperature range is wide. This study aimed to assess the effectiveness of TTM at 32 to 34 °C while considering the degree of cerebral injury and cerebral circulation, as assessed by regional cerebral oxygen saturation (rSO2). METHODS: This is a secondary analysis of prospectively collected registry data from comatose patients who were transferred to 15 hospitals in Japan after out-of-hospital cardiac arrest (OHCA) from 2011 to 2013...
February 9, 2018: Resuscitation
https://www.readbyqxmd.com/read/29431290/in-vitro-photoacoustic-spectroscopy-of-pulsatile-blood-flow-probing-the-interrelationship-between-red-blood-cell-aggregation-and-oxygen-saturation
#19
Tae-Hoon Bok, Eno Hysi, Michael C Kolios
We investigate the optical wavelength dependence in quantitative photoacoustic (QPA) assessment of red blood cell (RBC) aggregation and oxygen saturation (sO2 ) during pulsatile blood flow. Experimentally, the pulsatile flow was imaged with 700-900 nm laser using the Vevo LAZR. Theoretically, the PA signals were computed based on a Green's function integrated with a Monte Carlo simulation of radiant fluence. The pulsatile flow created periodic conditions of RBC aggregation/non-aggregation, altering the aggregate size, and, in turn, the sO2 ...
February 12, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29431223/a-rainbow-trout-oncorhynchus-mykiss-strain-with-higher-aerobic-scope-in-normoxia-also-has-superior-tolerance-of-hypoxia
#20
Y Zhang, T M Healy, W Vandersteen, P M Schulte, A P Farrell
This study compared parr from three strains of rainbow trout Oncorhynchus mykiss to examine intraspecific variation in metabolic traits, hypoxia tolerance and upper thermal tolerance in this species. At the strain level, variation in absolute aerobic scope (AAS), critical oxygen level (O2crit ), incipient lethal oxygen saturation (ILOS) and critical thermal maximum (CTmax ) generally exhibited consistent differences among the strains, suggesting the possibility of functional associations among these traits...
February 2018: Journal of Fish Biology
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