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Pulse oximetry

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https://www.readbyqxmd.com/read/28099291/transcutaneous-carbon-dioxide-measurements-in-women-receiving-intrathecal-morphine-for-cesarean-delivery-a-prospective-observational-study
#1
Jeanette R Bauchat, Robert McCarthy, Paul Fitzgerald, Stephen Kolb, Cynthia A Wong
BACKGROUND: Neuraxial morphine is the most commonly used analgesic technique after cesarean delivery. The incidence of respiratory depression is reported to be very low (0%-1.2%) in this patient population as measured by pulse oximetry and respiratory rates. However, hypercapnia may be a more sensitive measure of respiratory depression. In the current study, the incidence of hypercapnia events (transcutaneous CO2 [TcCO2] >50 mm Hg) for ≥2-minute duration was evaluated using the Topological Oscillation Search with Kinematical Analysis monitor in women who received intrathecal morphine for postcesarean delivery analgesia...
January 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28099286/multicenter-study-validating-accuracy-of-a-continuous-respiratory-rate-measurement-derived-from-pulse-oximetry-a-comparison-with-capnography
#2
Sergio D Bergese, Michael L Mestek, Scott D Kelley, Robert McIntyre, Alberto A Uribe, Rakesh Sethi, James N Watson, Paul S Addison
BACKGROUND: Intermittent measurement of respiratory rate via observation is routine in many patient care settings. This approach has several inherent limitations that diminish the clinical utility of these measurements because it is intermittent, susceptible to human error, and requires clinical resources. As an alternative, a software application that derives continuous respiratory rate measurement from a standard pulse oximeter has been developed. We sought to determine the performance characteristics of this new technology by comparison with clinician-reviewed capnography waveforms in both healthy subjects and hospitalized patients in a low-acuity care setting...
January 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28090054/hemoglobin-kansas-as-a-rare-cause-of-cyanosis-a-case-report-and-review-of-the-literature
#3
Yoshikuni Nagayama, Minoru Yoshida, Tadashi Kohyama, Katsuyuki Matsui
Hemoglobin (Hb) Kansas is an inherited Hb variant with a low oxygen affinity that is associated with low oxygen saturation on pulse oximetry (SpO2). It leads to asymptomatic cyanosis. Patients with Hb Kansas do not require any specific treatment and the prognosis is good. In patients with unexplained cyanosis, we should thus consider Hb variants, including Hb Kansas and avoid unnecessary investigations and managements. We herein report the case of 65-year-old woman with Hb Kansas and review five other cases (three lineages) that have been reported in Japan...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28088956/-thoracic-paravertebral-block-in-the-pacu-for-immediate-postoperative-pain-relief-after-video-assisted-thoracoscopic-surgery
#4
F Liu, J Zhang, H K Zhang, Y Q Zhao, P Liang, Y X Zuo
Objective: To investigate the effectiveness and safety of the thoracic paravertebral block(TPVB) in the post postanesthesia care unit(PACU) for patients suffered moderate to severe pain after Video-Assisted Thoracoscopic Surgery(VATS). Methods: 78 atients who complained moderate to severe pain on arrival to PACU after VATS were randomly assigned into two groups: thoracic paravertebral block treatment group(P group) and sufentanil treatment group(S group). The VAS Pain score at rest and movement, heart rate, blood pressure, and pulse oximetry 1 hour after treatment and duration of patients staying in the PACU after treatment were recorded...
January 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28081558/should-new-zealand-introduce-nationwide-pulse-oximetry-screening-for-the-detection-of-critical-congenital-heart-disease-in-newborn-infants
#5
Elza Cloete, Thomas L Gentles, Jane M Alsweiler, Lesley A Dixon, Dianne R Webster, Deborah L Rowe, Frank H Bloomfield
No abstract text is available yet for this article.
January 13, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28078984/rasburicase-induced-methemoglobinemia-in-a-patient-with-glucose-6-phosphate-dehydrogenase-deficiency
#6
Maliha Khan, Shilpa Paul, Saad Farooq, Thein Hlaing Oo, Priya Ramshesh, Nitin Jain
BACKGROUND: Rasburicase is commonly used in patients with hematologic malignancies for tumor lysis syndrome prophylaxis and management. Methemoglobinemia is a serious rare adverse effect of rasburicase, more common in patients with G6PD deficiency. Prompt diagnosis and appropriate management of this condition can make the difference between successful recovery and significant morbidity. Here we discuss the link of rasburicase with methemoglobinemia and the pathophysiology behind increased incidence of this side effect in G6PD deficient patients...
January 11, 2017: Current Drug Safety
https://www.readbyqxmd.com/read/28077748/poor-validity-of-noninvasive-hemoglobin-measurements-by-pulse-oximetry-compared-with-conventional-absorptiometry-in-children-in-c%C3%A3-te-d-ivoire
#7
Isaac I Bogoch, Jean T Coulibaly, Jason Rajchgot, Jason R Andrews, Jana Kovac, Jürg Utzinger, Gordana Panic, Jennifer Keiser
Anemia remains a major public health issue in many African communities. We compared a novel, commercially available noninvasive hemoglobin (Hb)-measuring device to direct Hb measurements by finger-prick samples in a pediatric cohort in rural Côte d'Ivoire. Noninvasive Hb measurements were attempted in 191 children 2-15 years of age and obtained in 102 (53.5%) children. The median Hb for the 102 children was 12.0 g/dL (interquartile range [IQR] = 11.3-12.7 g/dL) for conventional absorptiometry and 13.3 g/dL (IQR = 12...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28076530/factors-associated-with-chronic-obstructive-pulmonary-disease-among-the-elderly
#8
Ana Teresa Fernandes Barbosa, Jair Almeida Carneiro, Gizele Carmen Fagundes Ramos, Maísa Tavares Leite, Antônio Prates Caldeira
This study aimed to identify factors associated with Chronic Obstructive Pulmonary Disease (COPD) among non-institutionalized elderly people. It involved a cross-sectional study conducted on the basis of a household survey, followed by spirometry. People diagnosed with COPD were compared with those with normal spirometry, through bivariate analysis, followed by multivariate regression analysis. We identified 53 elderly people were identified with COPD. After multivariate analysis, the following factors associated with COPD were identified: past or current smoking (OR: 3...
January 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28075515/the-limitations-of-pulse-oximetry-for-cchd-screening-in-the-nicu
#9
Nithi Fernandes, Satyan Lakshminrusimha
We have read this recently published manuscript by Hu et al(1) regarding using pulse oximetry for screening for critical congenital heart disease (CCHD) in the neonatal intensive care units (NICU) with great interest. As an institution exclusively serving outborn neonates, the study was appropriately designed and executed. Prior published reports of CCHD screening in the NICU report a very low detection rate with pulse oximetry screening. This article is protected by copyright. All rights reserved.
January 11, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28068656/mechanisms-of-improved-exercise-performance-under-hyperoxia
#10
Silvia Ulrich, Elisabeth D Hasler, Séverine Müller-Mottet, Stephan Keusch, Michael Furian, Tsogyal D Latshang, Simon Schneider, Stéphanie Saxer, Konrad E Bloch
BACKGROUND: The impact of hyperoxia on exercise limitation is still incompletely understood. OBJECTIVES: We investigated to which extent breathing hyperoxia enhances the exercise performance of healthy subjects and which physiologic mechanisms are involved. METHODS: A total of 32 healthy volunteers (43 ± 15 years, 12 women) performed 4 bicycle exercise tests to exhaustion with ramp and constant-load protocols (at 75% of the maximal workload [Wmax] on FiO2 0...
January 10, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28065256/a-newborn-infant-with-oxygen-desaturation-during-sleep
#11
Ashley Deschamp, Ameet Daftary
The patient is a 1-week-old boy born at 37+2 weeks' gestational age through spontaneous vaginal delivery. The pregnancy was complicated by maternal gestational diabetes mellitus and pre-eclampsia. The Apgar score was 9 at both 1 minute and 5 minutes after birth. Because of hypoglycemia at delivery that required IV dextrose, he was admitted to the local neonatal intensive care unit. His blood glucose levels quickly stabilized, dextrose administration was discontinued, and the patient began breast-feeding. On day 2 of life, the patient began having intermittent oxygen desaturation, with oxygen saturation as measured by pulse oximetry down to 70% while sleeping; he was transferred to a tertiary-care NICU for further management...
January 2017: Chest
https://www.readbyqxmd.com/read/28060545/safety-and-immunogenicity-of-adenovirus-35-tb-vaccine-candidate-in-adults-with-active-or-previous-tb-a-randomized-trial
#12
Richard N van Zyl-Smit, Aliasgar Esmail, Mary E Bateman, Rodney Dawson, Jonathan Goldin, Eva van Rikxoort, Macaya Douoguih, Maria Grazia Pau, Jerald C Sadoff, J Bruce McClain, Margaret Ann Snowden, Jacqueline Benko, David A Hokey, Kathryn Tucker Rutkowski, Andrew Graves, Barbara Shepherd, Sadritdin Ishmukhamedov, Benjamin M N Kagina, Brian Abel, Willem A Hanekom, Thomas J Scriba, Eric D Bateman
RATIONALE: Administration of tuberculosis vaccines in participants with previous or current pulmonary tuberculosis may have the potential for causing harmful post-vaccination immunological (Koch-type) reactions. OBJECTIVES: To assess the safety and immunogenicity of three dose levels of the AERAS-402 live, replication-deficient adenovirus 35-vectored tuberculosis candidate vaccine, containing three mycobacterial antigens, in individuals with current or previous pulmonary tuberculosis...
January 6, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28060323/a-model-to-simulate-clinically-relevant-hypoxia-in-humans
#13
Lars Eichhorn, Florian Kessler, Volker Böhnert, Felix Erdfelder, Anja Reckendorf, Rainer Meyer, Richard K Ellerkmann
In case of apnea, arterial partial pressure of oxygen (pO2) decreases, while partial pressure of carbon dioxide (pCO2) increases. To avoid damage to hypoxia sensitive organs such as the brain, compensatory circulatory mechanisms help to maintain an adequate oxygen supply. This is mainly achieved by increased cerebral blood flow. Intermittent hypoxia is a commonly seen phenomenon in patients with obstructive sleep apnea. Acute airway obstruction can also result in hypoxia and hypercapnia. Until now, no adequate model has been established to simulate these dynamics in humans...
December 22, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28056520/preoperative-insight-into-the-quality-of-radial-artery-grafts
#14
Petar Vukovic, Miodrag Peric, Sandra Radak, Nikola Aleksic, Dragana Unic-Stojanovic, Slobodan Micovic, Ivan Stojanovic, Predrag Milojevic
We investigated the impact of preoperative ultrasonography of the forearm circulation on radial artery conduit selection. Preoperative ultrasound of the forearm circulation was performed routinely in 536 patients planned for radial artery harvesting. The safety assessment of the harvest included the following algorithm of tests: the ultrasound, the Allen test, and pulse oximetry. The quality criteria that were used to exclude a radial artery from harvesting were small size of the artery, diffuse atherosclerosis, calcifications, and severe neointimal hyperplasia...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28052071/impact-of-the-13-valent-pneumococcal-conjugate-vaccine-on-clinical-and-hypoxemic-childhood-pneumonia-over-three-years-in-central-malawi-an-observational-study
#15
Eric D McCollum, Bejoy Nambiar, Rashid Deula, Beatiwel Zadutsa, Austin Bondo, Carina King, James Beard, Harry Liyaya, Limangeni Mankhambo, Marzia Lazzerini, Charles Makwenda, Gibson Masache, Naor Bar-Zeev, Peter N Kazembe, Charles Mwansambo, Norman Lufesi, Anthony Costello, Ben Armstrong, Tim Colbourn
BACKGROUND: The pneumococcal conjugate vaccine's (PCV) impact on childhood pneumonia during programmatic conditions in Africa is poorly understood. Following PCV13 introduction in Malawi in November 2011, we evaluated the case burden and rates of childhood pneumonia. METHODS AND FINDINGS: Between January 1, 2012-June 30, 2014 we conducted active pneumonia surveillance in children <5 years at seven hospitals, 18 health centres, and with 38 community health workers in two districts, central Malawi...
2017: PloS One
https://www.readbyqxmd.com/read/28051570/severe-hypoxemia-in-muskoxen-ovibos-moschatus-immobilized-with-etorphine-and-xylazine-corrected-with-supplemental-nasal-oxygen
#16
Marianne Lian, Sven Björck, Jon M Arnemo, Núria Fandos Esteruelas, Martine Angel, Solveig C Minsaas, Krista L Jones, Alina L Evans
Twenty-three muskoxen ( Ovibos moschatus ) housed in a captive facility for rewilding in Sweden were chemically immobilized for annual health evaluations and hoof trimming. The muskoxen were darted in May to September (2012-2015) in their holding pen with etorphine (0.015 mg/kg) and xylazine (0.1 mg/kg) intramuscularly. Twenty-two of the 23 animals were immobilized with a single dart injection. The mean (SD) induction time was 4 (2) min. Arterial blood gases were collected from 18 animals. All animals were severely hypoxemic with varying degrees of respiratory acidosis...
January 4, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28048538/th-ab-209-05-validating-hemoglobin-saturation-and-dissolved-oxygen-in-tumors-using-photoacoustic-computed-tomographic-spectroscopic-imaging
#17
J Burnett, J Sick, N Cao, B Liu, H Nakshatri, M Mendonca, K Stantz
PURPOSE: Photoacoustic computed tomographic spectroscopy (PCT-S) provides intra-tumor measurements of oxygenation with high spatial resolution (0.2mm) and temporal fidelity (1-2 minutes) without the need for exogenous agents or ionizing radiation, thus providing a unique in vivo assay to measure SaO2 and investigate acute and chronic forms of hypoxia. The goal of this study is to validate in vivo SaO2 levels within tail artery of mice and the relationship between SaO2 and pO2 within subcutaneous breast tumors using PCT-S imaging, pulse oximetry and an OxyLite probe...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043739/canadian-cardiovascular-society-canadian-pediatric-cardiology-association-position-statement-on-pulse-oximetry-screening-in-newborns-to-enhance-detection-of-critical-congenital-heart-disease
#18
Kenny K Wong, Anne Fournier, Deborah S Fruitman, Lisa Graves, Derek G Human, Michael Narvey, Jennifer L Russell
Congenital heart disease is the most common congenital malformation and approximately 3 in 1000 newborns have critical congenital heart disease (CCHD). Timely diagnosis affects morbidity, mortality, and disability, and newborn pulse oximetry screening has been studied to enhance detection of CCHD. In this position statement we present an evaluation of the literature for pulse oximetry screening. Current detection strategies including prenatal ultrasound examination and newborn physical examination are limited by low diagnostic sensitivity...
October 26, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28040232/how-well-do-children-with-cystic-fibrosis-sleep-an-actigraphic-and-questionnaire-based-study
#19
Moya Vandeleur, Lisa M Walter, David S Armstrong, Philip Robinson, Gillian M Nixon, Rosemary S C Horne
OBJECTIVE: To measure sleep patterns and quality, objectively and subjectively, in clinically stable children with cystic fibrosis (CF) and healthy control children, and to examine the relationship between sleep quality and disease severity. STUDY DESIGN: Clinically stable children with CF and healthy control children (7-18 years of age) were recruited. Sleep patterns and quality were measured at home with actigraphy (14 days). Overnight peripheral capillary oxygen saturation was measured via the use of pulse oximetry...
December 28, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/28034908/targeted-oxygen-in-the-resuscitation-of-preterm-infants-a-randomized-clinical-trial
#20
Ju Lee Oei, Ola D Saugstad, Kei Lui, Ian M Wright, John P Smyth, Paul Craven, Yueping Alex Wang, Rowena McMullan, Elisabeth Coates, Meredith Ward, Parag Mishra, Koert De Waal, Javeed Travadi, Kwee Ching See, Irene G S Cheah, Chin Theam Lim, Yao Mun Choo, Azanna Ahmad Kamar, Fook Choe Cheah, Ahmed Masoud, William Tarnow-Mordi
BACKGROUND AND OBJECTIVES: Lower concentrations of oxygen (O2) (≤30%) are recommended for preterm resuscitation to avoid oxidative injury and cerebral ischemia. Effects on long-term outcomes are uncertain. We aimed to determine the effects of using room air (RA) or 100% O2 on the combined risk of death and disability at 2 years in infants <32 weeks' gestation. METHODS: A randomized, unmasked study designed to determine major disability and death at 2 years in infants <32 weeks' gestation after delivery room resuscitation was initiated with either RA or 100% O2 and which were adjusted to target pulse oximetry of 65% to 95% at 5 minutes and 85% to 95% until NICU admission...
January 2017: Pediatrics
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