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Pulse oximetry

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https://www.readbyqxmd.com/read/28645964/the-predictive-value-of-serial-changes-in-diaphragm-function-during-the-spontaneous-breathing-trial-for-weaning-outcome-a-study-protocol
#1
Pengmin Zhou, Zhongheng Zhang, Yucai Hong, Huabo Cai, Hui Zhao, Peifeng Xu, Yiming Zhao, Shengping Lin, Xuchang Qin, JiaWei Guo, Yun Pan, Junru Dai
INTRODUCTION: There is a variety of tools being used in clinical practice for the prediction of weaning success from mechanical ventilation. However, their diagnostic performances are less than satisfactory. The purpose of this study is to investigate the value of serial changes in diaphragm function measured by ultrasound during the spontaneous breathing trial (SBT) as a weaning predictor. METHODS AND ANALYSIS: This is a prospective observational study conducted in a 10-bed medical emergency intensive care unit (EICU) in a university-affiliated hospital...
June 23, 2017: BMJ Open
https://www.readbyqxmd.com/read/28637572/investigating-cyclooxygenase-inhibition-in-a-rat-pulmonary-contusion-model-a-laboratory-study-finding-no-improvement-with-ibuprofen
#2
John P Sharpe, Nick R Khan, Arindam R Chatterjee, Jinsong Huang, Louis J Magnotti, Martin A Croce, Timothy C Fabian
Minimal advances have been made in the management of pulmonary contusions (PCs). The purpose of this study was to evaluate the impact of cyclooxygenase inhibition on outcomes following PC in a rat model. PC was induced in anesthetized adult rats. Ibuprofen was given to the treatment group (TG) and water was given to the control group (CG). Lung injury was assessed with pulse oximetry, arterial blood gases, CT, and histopathologic examination. Inflammation was measured with both serum and bronchoalveolar lavage (BAL) levels of tumor necrosis factor α and interleukin-6...
June 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28629636/nasal-high-flow-oxygen-therapy-in-the-ward-setting-a-prospective-observational-study
#3
Alison M Pirret, Susan F Takerei, Claire L Matheson, Meghan Kelly, Wharewaina Strickland, Joanne Harford, Nicola E Jepsen, Lisa J Welsh, Chloe P A Allan
BACKGROUND: Whilst research demonstrates the benefits of nasal high flow oxygen in the intensive care setting, limited literature exists on its benefits in ward patients. OBJECTIVES: This study evaluated the use of nasal high flow oxygen in adult ward patients with respiratory failure or at risk of respiratory deterioration. Primary outcome was an improvement in pulmonary function as indicated by decreases in respiratory and heart rates and an increase in arterial oxygen saturation via pulse oximetry...
June 16, 2017: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
https://www.readbyqxmd.com/read/28622666/real-time-automatic-apneic-event-detection-using-nocturnal-pulse-oximetry
#4
Da Woon Jung, Su Hwan Hwang, Jaegeol Cho, Byung Hun Choi, Hyun Jae Baek, Yu Jin Lee, Do Un Jeong, Kwang Suk Park
OBJECTIVE: Nocturnal pulse oximetry has been proposed as a simpler alternative to polysomnography in diagnosing sleep apnea. However, existing techniques are limited in terms of inability to provide time information on sleep apnea occurrence. This study aimed to propose a new strategy for near real-time automatic detection of apneic events and reliable estimation of apnea-hypopnea index using nocturnal pulse oximetry. METHODS: Among 230 polysomnographic recordings with apnea-hypopnea index values ranging from 0 to 86...
June 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28621168/detection-of-hb-rothschild-hbb-c-112t-a-or-112t-c-through-high-index-of-suspicion-on-abnormal-pulse-oximetry
#5
Nazeer A Alli, Piet Wessels, Narisha Rampersad, Barnaby E Clark, Swee Lay Thein
We describe a case with a low oxygen affinity hemoglobin (Hb) variant who presented with cyanosis in the absence of cardiopulmonary disease. The patient, a 27-year-old pregnant female (P1G2), complained of a productive cough and bluish discoloration of the lips that started 3 days prior to seeking attention. She had no previous episodes and has generally been in good health. A positive family history of cyanosis was obtained in one sibling. Systematic examination, notably the cardiorespiratory system, revealed no abnormalities...
June 16, 2017: Hemoglobin
https://www.readbyqxmd.com/read/28611051/sulfhaemoglobinaemia-caused-by-ferrous-sulfate
#6
Laith Derbas, Mohamed Warsame, Mohannad Abu Omar, Yousaf Zafar, Gregory Howell
A 78-year-old man was referred from his primary care clinic to the emergency department due to bluish discolouration of his lips and decreased oxygen saturation on pulse oximetry. The patient was asymptomatic. Physical exam was normal except for lip cyanosis. A CT pulmonary angiogram was negative for pulmonary embolism. Arterial blood gas (ABG) analysis with co-oximetry showed low oxyhaemoglobin, normal partial pressure of oxygen and methaemoglobinaemia, but an unexplained 'gap' in total haemoglobin saturation...
June 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28607210/tachypnea-and-other-danger-signs-vs-pulse-oximetry-for-prediction-of-hypoxia-in-severe-pneumonia-very-severe-disease
#7
Varun Alwadhi, Pooja Dewan, Rajeev Kumar Malhotra, Dheeraj Shah, Piyush Gupta
OBJECTIVE: To compare the performance of respiratory rate and other clinical signs against pulse oximetry for predicting hypoxia in children with Severe pneumonia/Very severe disease as per integrated management of neonatal and childhood illness (IMNCI) classification. DESIGN: Cross-sectional study. SETTING: Pediatric emergency department of a tertiary-care hospital in Delhi, India. SUBJECTS: 112 hospitalized children (2 mo - 5 y) with Severe pneumonia/Very severe disease as per IMNCI classification...
June 4, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28572487/biodistribution-and-radiation-dosimetry-of-18-f-ftc-146-in-humans
#8
Trine Hjørnevik, Peter W Cipriano, Bin Shen, Jun Hyung Park, Praveen Gulaka, Dawn Holley, Harsh Gandhi, Daehyun Yoon, Erik S Mittra, Greg Zaharchuk, Sanjiv S Gambhir, Christopher R McCurdy, Frederick T Chin, Sandip Biswal
The purpose of this study is to assess safety, biodistribution and radiation dosimetry in humans for the highly selective sigma-1 receptor (S1R) positron emission tomography (PET) agent (18)F-6-(3-fluoropropyl)-3-(2-(azepan-1-yl)ethyl)benzo[d]thiazol-2(3H)-one ((18)F-FTC-146). Methods: Ten healthy volunteers (HV; five female, five male; age: 34.3 ± 6.5 years) were recruited, and written informed consent was obtained from all participants. Series of whole-body PET/magnetic resonance imaging (PET/MRI) examinations were acquired for up to three hours after injection (357...
June 1, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28560835/a-comparison-of-pulse-oximetry-and-cerebral-oxygenation-in-children-with-severe-sleep-apnea-hypopnea-syndrome-a-pilot-study
#9
Jorge Olmo Arroyo, Sonia Khirani, Alessandro Amaddeo, Lucie Griffon, Livio De Sanctis, Philippe Pouard, Brigitte Fauroux
Near infrared spectroscopy (NIRS) has been used to assess the impact of obstructive sleep apnea-hypopnea syndrome (OSAHS) on cerebral oxygenation. However, the relationship between the variations in the cerebral tissue oxygen saturation (ΔTOI) and pulse oximetry (ΔSpO2 ) has not been assessed in children with OSAHS. Consecutive clinically stable children with severe OSAHS [apnea-hypopnea index (AHI) >15 events h(-1) ] diagnosed during a night-time polygraphy with simultaneous recording of cerebral oxygenation with NIRS (NIRO-200NX, Hamamatsu Photonics KK) were included between September 2015 and June 2016...
May 31, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28558953/are-heart-rate-dynamics-in-the-transition-from-rest-to-submaximal-exercise-related-to-maximal-cardiorespiratory-responses-in-copd
#10
Adriana Mazzuco, Wladimir Musetti Medeiros, Aline Soares de Souza, Maria Clara Noman Alencar, José Alberto Neder, Audrey Borghi-Silva
BACKGROUND: Poor exercise capacity is an important negative prognostic marker in patients with chronic obstructive pulmonary disease (COPD). Heart rate variability (HRV) responses can indicate alterations in cardiac autonomic control. Nevertheless, it remains unclear whether these abnormalities are related to cardiorespiratory responses to exercise in these patients. OBJECTIVE: To evaluate whether HRV at rest and submaximal exercise are related to impaired cardiopulmonary responses to exercise in COPD patients...
May 20, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28553625/the-comparison-effects-of-two-methods-of-adaptive-support-ventilation-minute-ventilation-110-and-adaptive-support-ventilation-minute-ventilation-120-on-mechanical-ventilation-and-hemodynamic-changes-and-length-of-being-in-recovery-in-intensive-care-units
#11
Babak Ali Kiaei, Parviz Kashefi, Seyed Taghi Hashemi, Daryoush Moradi, Ahmad Mobasheri
BACKGROUND: The conventional method for ventilation is supported by accommodative or adaptive support ventilation (ASV) that the latter method is done with two methods: ASV minute ventilation (mv): 110% and ASV mv: 120%. Regarding these methods this study compared the differences in duration of mechanical ventilation and hemodynamic changes during recovery and length of stay in Intensive Care Units (ICU). MATERIALS AND METHODS: In a clinical trial study, forty patients candidate for ventilation were selected and randomly divided into two groups of A and B...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28548303/scalloped-tongue-is-associated-with-nocturnal-intermittent-hypoxia-among-community-dwelling-japanese-the-toon-health-study
#12
K Tomooka, T Tanigawa, S Sakurai, K Maruyama, E Eguchi, S Nishioka, N Miyoshi, H Kakuto, G Shimizu, D Yamaoka, I Saito
Scalloped tongue is considered as a possible clinical finding of obstructive sleep apnoea (OSA). There are few evidence of the association between scalloped tongue and OSA. To examine the association between scalloped tongue and nocturnal intermittent hypoxia (NIH), a surrogate marker of OSA, among a general Japanese population. Study participants were 398 men and 732 women aged 30-79 years who participated in the Toon Health Study from 2011 to 2014. Scalloped tongue was classified into three categories: none, mild and moderate-to-severe...
May 26, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28548301/night-to-night-variability-of-obstructive-sleep-apnea
#13
Anna S Stöberl, Esther I Schwarz, Sarah R Haile, Christopher D Turnbull, Valentina A Rossi, John R Stradling, Malcolm Kohler
One night of a sleep study is the standard for diagnosis and exclusion of obstructive sleep apnea. Single testing requires high sensitivity of the test method and a stable disease of interest to warrant a low rate of false-negative tests. Obstructive sleep apnea is diagnosed and graded by conventional thresholds of apneas and hypopneas per hour of sleep, and treatment is usually initiated in the presence of symptoms. The aim of this study was to assess night-to-night variability of obstructive sleep apnea to reassess the current practice...
May 26, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28547651/photoplethysmography-for-blood-volumes-and-oxygenation-changes-during-intermittent-vascular-occlusions
#14
T Y Abay, P A Kyriacou
Photoplethysmography (PPG) is an optical technique that measures blood volume variations. The main application of dual-wavelength PPG is pulse oximetry, in which the arterial oxygen saturation (SpO[Formula: see text]) is calculated noninvasively. However, the PPG waveform contains other significant physiological information that can be used in conjunction to SpO[Formula: see text] for the assessment of oxygenation and blood volumes changes. This paper investigates the use of near infrared spectroscopy (NIRS) processing techniques for extracting relative concentration changes of oxygenated ([Formula: see text]HbO[Formula: see text]), reduced ([Formula: see text]HHb) and total haemoglobin ([Formula: see text]tHb) from dual-wavelength PPG signals during intermittent pressure-increasing vascular occlusions...
May 25, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28546376/noninvasive-monitoring-of-oxygen-and-ventilation
#15
Craig D Smallwood, Brian K Walsh
Noninvasive monitoring of oxygenation and ventilation is an essential part of pediatric respiratory care. Carbon dioxide, gas exchange monitoring, transcutaneous monitoring, near-infrared spectroscopy, pulse oximetry, and electrical impedance tomography are examined. Although some of these technologies have been utilized for decades, incorporation into mechanical ventilators and recently developed methods may provide important clinical insights in a broader patient range. Less mature technologies (electrical impedance tomography and near-infrared spectroscopy) have been of particular interest, since they offer easy bedside application and potential for improved care of children with respiratory failure and other disorders...
June 2017: Respiratory Care
https://www.readbyqxmd.com/read/28542050/low-spo2-with-normal-sao2-during-general-anesthesia-a-case-report
#16
Stefan Brugger, Maria-Dolores Santafé-Marti, Malika Lakhal
A 25-year-old Caucasian man with a history of spherocytosis, splenectomy, recurrent blood transfusion, and no cardiopulmonary disease presented for an emergent laparoscopic cholecystectomy with a baseline pulse oximetric saturation (SpO2) of 88% while breathing room air. The SpO2 increased to only 89% during preoxygenation with an FIO2 1.0. Multiple arterial blood samples revealed SaO2 as high as 100% with PaO2 averaging 390 mm Hg. He was subsequently diagnosed with a dyshemoglobin, hemoglobin Köln. The simultaneous presentation of a stable patient from a cardiopulmonary perspective with normal arterial oxygen tension and saturation in the blood gas analyses despite a low SpO2 measurement outlines the importance of integrating the history of present illness and both the importance and the limitation of the pulse oximetry...
May 23, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28539140/hemoglobin-oxygen-saturation-with-mild-hypoxia-and-microgravity
#17
Johnny Conkin, James H Wessel, Jason R Norcross, Omar S Bekdash, Andrew F J Abercromby, Matthew D Koslovsky, Michael L Gernhardt
INTRODUCTION: Microgravity (μG) exposure and even early recovery from μG in combination with mild hypoxia may increase the alveolar-arterial oxygen (O2) partial pressure gradient. METHODS: Four male astronauts on STS-69 (1995) and four on STS-72 (1996) were exposed on Earth to an acute sequential hypoxic challenge by breathing for 4 min 18.0%, 14.9%, 13.5%, 12.9%, and 12.2% oxygen-balance nitrogen. The 18.0% O2 mixture at sea level resulted in an inspired O2 partial pressure (PIo2) of 127 mmHg...
June 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28527965/perfusion-index-an-indicator-of-success-during-endoscopic-thoracic-sympathectomy-for-hyperhidrosis
#18
Eric I-Hun Jeng, Nikolaus Gravenstein, Charles T Klodell
BACKGROUND: Endoscopic thoracic sympathectomy (ETS) is indicated for refractory hyperhidrosis. The pulse oximetry-derived perfusion index (PI) quantifies pulsatile blood flow at the oximeter. Thoracic sympathectomy increases blood flow; thus we postulate it will reliably increase PI. We evaluated the ipsilateral finger PI as a predictor of successful sympathectomy during ETS. METHODS: After institutional review board approval and informed consent, 100 adult patients undergoing bilateral ETS were studied...
May 17, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28527475/the-oximapa-study-hypertension-control-by-abpm-and-association-with-sleep-apnea-syndrome-by-pulse-oximetry
#19
Tiago Maricoto, Eurico Alves Rodrigues Silva, Pedro Damião, José Mesquita Bastos
INTRODUCTION: Ambulatory blood pressure monitoring by automatic device is the best blood pressure evaluation method and sleep apnea syndrome is the leading cause of poor control. Oximetry allows screening these individuals but its usefulness has been poorly explored in Primary Health Care. The aim was to evaluate the blood pressure control at the office and with ambulatory blood pressure monitoring by automatic device and to relate it to sleep apnea syndrome. MATERIAL AND METHODS: We selected a sample of 50 participants, representative of 3036 hypertensive patients...
February 27, 2017: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28525513/an-observational-assessment-of-anesthesia-capacity-in-madagascar-as-a-prerequisite-to-the-development-of-a-national-surgical-plan
#20
Linden S Baxter, Vaonandianina A Ravelojaona, Hasiniaina N Rakotoarison, Alison Herbert, Emily Bruno, Kristin L Close, Vanessa Andean, Hery H Andriamanjato, Mark G Shrime, Michelle C White
BACKGROUND: The global lack of anesthesia capacity is well described, but country-specific data are needed to provide country-specific solutions. We aimed to assess anesthesia capacity in Madagascar as part of the development of a Ministry of Health national surgical plan. METHODS: As part of a nationwide surgical safety quality improvement project, we surveyed 19 of 22 regional hospitals, representing surgical facilities caring for 75% of the total population. The assessment was divided into 3 areas: anesthesia workforce density, infrastructure and equipment, and medications...
June 2017: Anesthesia and Analgesia
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