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https://www.readbyqxmd.com/read/28527965/perfusion-index-an-indicator-of-success-during-endoscopic-thoracic-sympathectomy-for-hyperhidrosis
#1
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/28526082/proof-of-concept-non-invasive-estimation-of-peripheral-venous-oxygen-saturation
#2
Musabbir Khan, Chris G Pretty, Alexander C Amies, Joel Balmer, Houda E Banna, Geoffrey M Shaw, J Geoffrey Chase
BACKGROUND: Pulse oximeters continuously monitor arterial oxygen saturation. Continuous monitoring of venous oxygen saturation (SvO2) would enable real-time assessment of tissue oxygen extraction (O2E) and perfusion changes leading to improved diagnosis of clinical conditions, such as sepsis. METHODS: This study presents the proof of concept of a novel pulse oximeter method that utilises the compliance difference between arteries and veins to induce artificial respiration-like modulations to the peripheral vasculature...
May 19, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28500462/perfusion-index-and-left-ventricular-output-correlation-in-healthy-term-infants
#3
Iuri Corsini, Alessandra Cecchi, Caterina Coviello, Carlo Dani
Perfusion index (PI) is a non-invasive marker of peripheral perfusion which is detected by an oximeter. We aimed to assess the correlation between PI and left ventricular output (LVO) in healthy term infants at the time of the screening for congenital heart disease (CHD). PI was measured at 48 ± 2 h of life in the infant's right hand (PIrh) and in 1 foot (PIf) contemporary to SpO2 for CHD screening. Heart ultrasound was performed immediately after the screening procedure for measuring LVO. Forty-nine healthy term infants were studied...
May 12, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28496029/a-newly-established-severity-scoring-system-in-predicting-the-prognosis-of-patients-with-severe-fever-with-thrombocytopenia-syndrome
#4
Bo Yang, Xiaoli Wang, Yaping Li, Anzhao Wu, Qian Liu, Yuyin Lu, Chengmin Yuan, Mingming Wang
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by novel Bunyavirus. Due to the peculiarity of SFTS, accurate assessment is difficult to achieve with the current score systems. This study aimed to establish a new severity scoring system in predicting the prognosis of patients with SFTS. We included 123 patients with SFTS: 92 patients (45 males and 47 females), aged 59 ± 12 years, in survive group and 31 patients (17 males and 14 females), aged 61 ± 10 years, in death group...
May 2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28486654/oxygen-availability-and-nursing-capacity-for-oxygen-therapy-in-ugandan-paediatric-wards
#5
Juliet Nabwire, Sophie Namasopo, Michael Hawkes
Oxygen is essential, life-saving, supportive treatment for children with hypoxaemia but is not available in many resource-constrained health facilities. We conducted a cross-sectional survey of oxygen availability and nurses' skills for oxygen administration at the paediatric wards of 11 district hospitals in eastern Uganda. Functional oxygen delivery was available at the paediatric wards of only 2 of 11 (18%) hospitals. Of the six concentrators found, two did not function at all and two produced a stream of O2 <80% pure...
May 8, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28485694/childhood-pneumonia-diagnostics-community-health-workers-and-national-stakeholders-differing-perspectives-of-new-and-existing-aids
#6
Hollie Spence, Kevin Baker, Alexandra Wharton-Smith, Akasiima Mucunguzi, Lena Matata, Tedila Habte, Diana Nanyumba, Anteneh Sebsibe, Thol Thany, Karin Källander
BACKGROUND: Pneumonia heavily contributes to global under-five mortality. Many countries use community case management to detect and treat childhood pneumonia. Community health workers (CHWs) have limited tools to help them assess signs of pneumonia. New respiratory rate (RR) counting devices and pulse oximeters are being considered for this purpose. OBJECTIVE: To explore perspectives of CHWs and national stakeholders regarding the potential usability and scalability of seven devices to aid community assessment of pneumonia signs...
2017: Global Health Action
https://www.readbyqxmd.com/read/28471970/evaluation-of-pulse-oximeter-derived-photoplethysmographic-signals-for-obstructive-sleep-apnea-diagnosis
#7
Yan Li, He Gao, Yan Ma
High prevalence of obstructive sleep apnea (OSA) has increased the demands for more convenient and accessible diagnostic devices other than standard in-lab polysomnography (PSG). Despite the increasing utility of photoplethysmograph (PPG), it remains understudied in underserved populations. This study aimed to evaluate the reliability of a standard pulse oximeter system with an automated analysis based on the PPG signal for the diagnosis of OSA, as compared with PSG derived measures.Consecutive out-patients with suspect OSA completed a PPG monitoring simultaneous with an overnight in-lab standard PSG...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28469670/the-effect-of-tracheal-intubation-induced-autonomic-response-on-photoplethysmography
#8
Pekka Talke
Introduction. Intraoperative stress responses and postoperative pain can be monitored using photoplethysmography (PPG). PPG signal has two components, AC and DC. Effects of noxious stimuli-induced stress responses have not been studied on the DC component of PPG. The aim of this study was to investigate the effect of a known noxious stimulus (endotracheal intubation) on both the AC and DC components of PPG. Methods. 15 surgical patients having general anesthesia were enrolled into this clinical study. PPG was recorded electronically from a pulse oximeter...
2017: Anesthesiology Research and Practice
https://www.readbyqxmd.com/read/28455198/residence-at-moderate-versus-low-altitude-is-effective-at-maintaining-higher-oxygen-saturation-during-exercise-and-reducing-acute-mountain-sickness-following-fast-ascent-to-4559-m
#9
Eva Bernardi, Luca Pomidori, Davide Cavallari, Gaia Mandolesi, Annalisa Cogo
OBJECTIVE: To continuously monitor oxygen saturation (SpO2) by pulse oximeter and assess the development of acute mountain sickness (AMS) using the Lake Louise Score (LLS) during ascent from 1154 to 4559 m in 2 groups of subjects: 10 moderate-altitude residents (MAR; ≥1000-≤2500 m) and 34 low-altitude residents (LAR). MAR are reported to have a lower incidence of AMS during ascent to higher altitudes compared with LAR. Whether this is related to higher SpO2 is still open to debate...
April 25, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28452901/effect-of-pain-and-analgesia-on-compensatory-reserve
#10
Carmen Hinojosa-Laborde, Jessie Renee D Fernandez, Gary W Muniz, Corinne D Nawn, Rebecca K Burns, Thuan H Le, Kathy B Porter, John T Hardy, Victor A Convertino
BACKGROUND: The measurement of the body's capacity to compensate for reduced blood volume can be assessed with a Compensatory Reserve Measurement (CRM). The CRM, which is calculated from changes in features of the arterial waveform, represents the integration of compensatory mechanisms during states of low tissue perfusion and oxygenation such as hemorrhage. This study was designed to test the hypothesis that pain which activates compensatory mechanisms and analgesia that result in reduced blood pressure are associated with lower compensatory reserve...
April 27, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28447860/remote-sensing-of-physiological-signs-using-a-machine-vision-system
#11
Ali Al-Naji, Kim Gibson, Javaan Chahl
The aim of this work is to remotely measure heart rate (HR) and respiratory rate (RR) using a video camera from long range (> 50 m). The proposed system is based on imperceptible signals produced from blood circulation, including skin colour variations and head motion. As these signals are not visible to the naked eye and to preserve the signal strength in the video, we used an improved video magnification technique to enhance these invisible signals and detect the physiological activity within the subject...
April 27, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28445548/assessing-the-severity-of-sleep-apnea-syndrome-based-on-ballistocardiogram
#12
Zhu Wang, Xingshe Zhou, Weichao Zhao, Fan Liu, Hongbo Ni, Zhiwen Yu
BACKGROUND: Sleep Apnea Syndrome (SAS) is a common sleep-related breathing disorder, which affects about 4-7% males and 2-4% females all around the world. Different approaches have been adopted to diagnose SAS and measure its severity, including the gold standard Polysomnography (PSG) in sleep study field as well as several alternative techniques such as single-channel ECG, pulse oximeter and so on. However, many shortcomings still limit their generalization in home environment. In this study, we aim to propose an efficient approach to automatically assess the severity of sleep apnea syndrome based on the ballistocardiogram (BCG) signal, which is non-intrusive and suitable for in home environment...
2017: PloS One
https://www.readbyqxmd.com/read/28439886/lifebox-pulse-oximeter-implementation-in-malawi-evaluation-of-educational-outcomes-and-impact-on-oxygen-desaturation-episodes-during-anaesthesia
#13
V Albert, S Mndolo, E M Harrison, E O'Sullivan, I H Wilson, I A Walker
Pulse oximetry is an essential monitor for safe anaesthesia but is often not available in low-income countries. The aim of this study was to determine whether the introduction of pulse oximetry with training was feasible and could reduce the incidence of oxygen desaturation during anaesthesia in a low-income country. Pulse oximeters were donated, with training, to 83 non-physician anaesthetists in Malawi. Knowledge was tested immediately before and after training and at follow-up. Providers were asked to record the lowest peripheral oxygen saturation (SpO2 ) for the first 100 cases anaesthetised after training...
April 24, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28435357/effectiveness-of-audiovisual-distraction-with-computerized-delivery-of-anesthesia-during-the-placement-of-stainless-steel-crowns-in-children-with-down-syndrome
#14
Kausar Sadia Fakhruddin, Hisham El Batawi, M O Gorduysus
OBJECTIVE: Assessing effectiveness of audiovisual (AV) distraction with/without video eyewear and computerized delivery system-intrasulcular (CDS-IS) for local anesthesia during placement of stainless steel crowns for the management of pathological tooth grinding in children with Down syndrome. MATERIALS AND METHODS: This clinical study includes 22 children (13 boys and 9 girls), with mean age being 7.1 years. The study involved three sessions 1-week apart. During Session I, dental prophylaxis to the upper jaw was done while watching a movie projected on the ceiling without video eyewear whereas prophylaxis for the lower jaw and impressions of both jaws were taken while watching another movie using eyewear projection...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28427056/blood-pressure-during-the-immediate-neonatal-transition-is-the-mean-arterial-blood-pressure-relevant-for-the-cerebral-regional-oxygenation
#15
Nariae Baik, Berndt Urlesberger, Bernhard Schwaberger, Alexander Avian, Lukas Mileder, Georg M Schmölzer, Gerhard Pichler
BACKGROUND: Measurement of mean arterial blood pressure (MABP) is feasible during neonatal transition. OBJECTIVE: The objective of this study was to investigate a potential influence of MABP on the cerebral regional oxygen saturation (crSO2) in preterm and term infants during the immediate neonatal transition. MATERIALS AND METHODS: Preterm and term infants were included in this observational study. The crSO2 was measured by near-infrared spectroscopy with the INVOS 5100C (Somanetics Corp...
April 21, 2017: Neonatology
https://www.readbyqxmd.com/read/28426446/providing-anesthesia-in-resource-limited-settings
#16
Lena E Dohlman
PURPOSE OF REVIEW: The article reviews the reality of anesthetic resource constraints in low and middle-income countries (LMICs). Understanding these limitations is important to volunteers from high-income countries who desire to teach or safely provide anesthesia services in these countries. RECENT FINDINGS: Recently published information on the state of anesthetic resources in LMICs is helping to guide humanitarian outreach efforts from high-income countries. The importance of using context-appropriate anesthesia standards and equipment is now emphasized...
April 19, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28418067/a-case-series-of-vital-signs-controlled-patient-assisted-intravenous-analgesia-vpia-using-remifentanil-for-labour-and-delivery
#17
W L Leong, B L Sng, Q Zhang, N L R Han, R Sultana, A T H Sia
Intravenous remifentanil patient-controlled analgesia can be used during labour as an alternative to epidural analgesia. Adverse effects of opioids, including hypoxia and bradycardia, may lead to maternal morbidity and mortality. We devised an interactive feedback system based on a clinical proportional algorithm, to continuously monitor for adverse effects to enhance safety and better titrate analgesia. This vital signs-controlled, patient-assisted intravenous analgesia with remifentanil used a prototype delivery system linked to a pulse oximeter that evaluated maternal oxygen saturation and heart rate continuously...
April 18, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28410262/life-saving-esophageal-intubation-in-neonate-with-undiagnosed-tracheal-agenesis-a-case-report
#18
Christopher Sattler, Franklin Chiao, David Stein, Denise Murphy
A 3-day-old, 2.2-kg former 34-week premature infant with imperforate anus required loop ileostomy surgery. At delivery, the child had respiratory distress. Endotracheal intubation was "confirmed" by detection of exhaled carbon dioxide with a Pedi-Cap (Covidien, Dublin, Ireland) and subsequent chest x-ray. On arrival to the operating room, the pulse oximeter reading was 100% despite a large leak around the endotracheal tube and high-airway pressures. Packing the throat reduced the leak and increased the tidal volume...
April 13, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28398697/effects-of-targeting-lower-versus-higher-arterial-oxygen-saturations-on-death-or-disability-in-preterm-infants
#19
REVIEW
Lisa M Askie, Brian A Darlow, Peter G Davis, Neil Finer, Ben Stenson, Maximo Vento, Robin Whyte
BACKGROUND: The use of supplemental oxygen in the care of extremely preterm infants has been common practice since the 1940s. Despite this, there is little agreement regarding which oxygen saturation (SpO₂) ranges to target to maximise short- or long-term growth and development, while minimising harms. There are two opposing concerns. Lower oxygen levels (targeting SpO₂ at 90% or less) may impair neurodevelopment or result in death. Higher oxygen levels (targeting SpO₂ greater than 90%) may increase severe retinopathy of prematurity or chronic lung disease...
April 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28370327/does-the-volume-of-supplemental-intraligamentary-injections-affect-the-anaesthetic-success-rate-after-a-failed-primary-inferior-alveolar-nerve-block-a-randomized-double-blind-clinical-trial
#20
V Aggarwal, M Singla, S Miglani, S Kohli, V Sharma, S S Bhasin
AIM: To investigate the efficacy of 0.2 mL vs. 0.6 mL of 2% lidocaine when given as a supplementary intraligamentary injection after a failed inferior alveolar nerve block (IANB) METHODOLOGY: Ninety- seven adult patients with symptomatic irreversible pulpits received an IANB and root canal treatment was initiated. Pain during treatment was recorded using a visual analogue scale (Heft-Parker VAS). Patients with unsuccessful anaesthesia (n=78) randomly received intraligamentary injection of either 0...
March 28, 2017: International Endodontic Journal
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