keyword
MENU ▼
Read by QxMD icon Read
search

INVOS

keyword
https://www.readbyqxmd.com/read/29672776/postoperative-monitoring-of-free-diep-flap-in-breast-reconstruction-with-near-infrared-spectroscopy-variables-affecting-the-regional-oxygen-saturation
#1
Marzia Salgarello, Domenico Pagliara, Marco Rossi, Giuseppe Visconti, Liliana Barone-Adesi
BACKGROUND:  The timing of surgical reexploration in microanastomotic thrombosis is directly related to the salvage rate of free flap. Near-infrared spectroscopy (NIRS) is a noninvasive technique, which allows a continuous bedside monitoring of flap oxygenation. The current literature is lacking in the assessment of variables able to modify the NIRS monitoring. The aim of this study is to identify patient and flap-related variables that can affect regional oxygen saturation (rSO2 )...
April 19, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29539643/benchmarking-of-four-near-infrared-spectroscopy-devices-for-long-time-use-in-neonates
#2
Anna Schneider, Edda Hofstätter, Johannes Brandner, Angelika Moder, Silke Häusler, Martin Wald
BACKGROUND: Using near-infrared spectroscopy (NIRS) mixed tissue saturation can be calculated by measuring the oxygen saturation of oxygenated and deoxygenated erythrocytes in the tissue. Quality of the calculated value is not only dependent on the exposure of the measured values in the calculation, but also on external factors such as artifacts. Main object of this study was to determine whether and how the measurement quality of different devices varies in their long-term use in premature infants...
March 14, 2018: Klinische Pädiatrie
https://www.readbyqxmd.com/read/29538007/prediction-of-bilateral-cerebral-oxygen-desaturations-from-a-single-sensor-in-adult-cardiac-surgery-a-prospective-observational-study
#3
Manuel de la Matta, Alejandro Domínguez
BACKGROUND: Monitoring regional cerebral oxygen saturation (rcSO2) with near-infrared spectroscopy is increasingly being performed in patients scheduled for cardiac surgery. It is sometimes difficult to monitor both frontal lobes due to anatomical or space compromises. However, it remains unclear whether the use of only one lateral or medial probe can provide adequate bilateral monitoring. OBJECTIVE: To evaluate the efficacy of using a single lateral or medial probe to detect substantial desaturations on both sides...
May 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29484605/the-effects-of-systemic-oxygenation-on-cerebral-oxygen-saturation-and-its-relationship-to-mixed-venous-oxygen-saturation-a-prospective-observational-study-comparison-of-the-invos-and-foresight-elite-cerebral-oximeters
#4
Christian Schmidt, Matthias Heringlake, Patrick Kellner, Astrid Ellen Berggreen, Holger Maurer, Sebastian Brandt, Bence Bucsky, Michael Petersen, Efstratios I Charitos
PURPOSE: The present study aimed to test the hypothesis that cerebral oxygen saturation (ScO2 ) measurements with the INVOS-5100-C and the ForeSight-Elite cerebral oximeters vary in their correlation with mixed venous oxygen saturation (SvO2 ) upon changes in systemic oxygenation in extubated cardiac surgical patients. Additionally, we aimed to elucidate whether the ScO2 measurements of both devices can be used interchangeably to detect reduced SvO2 . METHODS: Forty-eight spontaneously breathing patients extubated after cardiac surgery were included in this prospective observational study...
February 26, 2018: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29439251/low-cerebral-oxygenation-is-associated-with-cognitive-impairment-in-chronic-hemodialysis-patients
#5
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/29359089/comparison-of-tissue-oximeters-on-a-liquid-phantom-with-adjustable-optical-properties-an-extension
#6
S Kleiser, D Ostojic, B Andresen, N Nasseri, H Isler, F Scholkmann, T Karen, G Greisen, M Wolf
Cerebral near-infrared spectroscopy (NIRS) oximetry may help clinicians to improve patient treatment. However, the application of NIRS oximeters is increasingly causing confusion to the users due to the inconsistency of tissue oxygen haemoglobin saturation (StO2 ) readings provided by different oximeters. To establish a comparability of oximeters, in our study we performed simultaneous measurements on the liquid phantom mimicking properties of neonatal heads and compared the tested device to a reference NIRS oximeter (OxiplexTS)...
January 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29300196/mesenteric-oxygenation-changes-associated-with-necrotizing-enterocolitis-and-pneumoperitoneum-after-multiple-blood-transfusions-a-case-report
#7
Terri Marin, James E Moore
BACKGROUND: The multifactorial pathology and broad clinical presentation of necrotizing enterocolitis (NEC) development in premature infants make prediction of disease onset extremely challenging. Over the past decade, packed red blood cell (PRBC) transfusions have been temporally linked to the development of NEC in severely anemic preterm infants, although this issue is highly controversial. PURPOSE: In this case study, we describe events of an extremely low birth-weight infant who developed NEC complicated by pneumoperitoneum after receiving multiple PRBC transfusions...
April 2018: Advances in Neonatal Care: Official Journal of the National Association of Neonatal Nurses
https://www.readbyqxmd.com/read/29242570/monitoring-cerebral-oxygenation-of-preterm-infants-using-a-neonatal-specific-sensor
#8
M Kenosi, J M O'Toole, G A Hawkes, W Hutch, E Low, M Wall, G B Boylan, C A Ryan, E M Dempsey
INTRODUCTION: Cerebral oxygenation (rcSO2 ) monitoring in preterm infants may identify periods of cerebral hypoxia or hyperoxia. We hypothesised that there was a relationship between rcSO2 values and short term outcome in infants of GA < 32weeks. METHODS: RcSO2 values were recorded for the first 48 h of life using an INVOS monitor with a neonatal sensor. The association between cranial ultrasound scan measured brain injury and rcSO2 was assessed. RESULTS: 120 infants were included...
December 15, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/29140967/near-infrared-spectroscopy-and-vascular-occlusion-test-for-predicting-clinical-outcome-in-pediatric-cardiac-patients-a-prospective-observational-study
#9
Ji-Hyun Lee, Young-Eun Jang, In-Kyung Song, Eun-Hee Kim, Hee-Soo Kim, Jin-Tae Kim
OBJECTIVES: This study is designed to determine the feasibility and utility of vascular occlusion test variables as measured by INVOS Medtronic, Dublin, Ireland) in pediatric cardiac patients. DESIGN: A prospective observational study. SETTING: A tertiary children's hospital. PATIENTS: Children less than or equal to 8 years old who were scheduled for elective cardiac surgery under cardiopulmonary bypass. INTERVENTIONS: A vascular occlusion test (3 min of ischemia and reperfusion) was performed on the calf at three time points: after induction of anesthesia (T0), during cardiopulmonary bypass (T1), and after sternal closure (T2)...
January 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29137806/a-novel-multimodal-computational-system-using-near-infrared-spectroscopy-predicts-the-need-for-ecmo-initiation-in-neonates-with-congenital-diaphragmatic-hernia
#10
Stephanie M Cruz, Patricio E Lau, Craig G Rusin, Candace C Style, Darrell L Cass, Caraciolo J Fernandes, Timothy C Lee, Christopher J Rhee, Sundeep Keswani, Rodrigo Ruano, Stephen E Welty, Oluyinka O Olutoye
BACKGROUND/PURPOSE: The purpose of this study was to develop a computational algorithm that would predict the need for ECMO in neonates with congenital diaphragmatic hernia (CDH). METHODS: CDH patients from August 2010 to 2016 were enrolled in a study to continuously measure cerebral tissue oxygen saturation (cStO2) of left and right cerebral hemispheres. NIRS devices utilized were FORE-SIGHT, CASMED and INVOS 5100, Somanetics. Using MATLAB©, a data randomization function was used to deidentify and blindly group patient's data files as follows: 12 for the computational model development phase (6 ECMO and 6 non-ECMO) and the remaining patients for the validation phase...
October 12, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29123430/the-use-of-invos%C3%A2-somatic-oximetry-to-measure-variations-in-placental-tissue-oxygenation-in-laboring-healthy-term-parturients-with-epidural-analgesia-an-observational-study
#11
Christian Loubert, Mélissa Ouellette, Valérie Zaphiratos, Issam Tanoubi
Purpose: Near-infrared spectroscopy provides a non-invasive continuous real-time monitoring of tissue oxygen saturation. As uterine contractions during labor may be associated with a transient uteroplacental hypoperfusion, this prospective, observational study investigates the ability of near-infrared spectroscopy to detect variation in uteroplacental oximetry during uterine contractions. Patients and methods: Four Invos™ oximetry probes (Medtronic® , Minneapolis, MN, USA) per subjects were applied on the placental surface (PLA), the abdomen (MYO), the forearm (ARM) and the leg (LEG), of twenty healthy laboring parturients with epidural analgesia...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/29084012/effects-of-changes-in-arterial-carbon-dioxide-and-oxygen-partial-pressures-on-cerebral-oximeter-performance
#12
Andrew Schober, John R Feiner, Philip E Bickler, Mark D Rollins
BACKGROUND: Cerebral oximetry (cerebral oxygen saturation; ScO2) is used to noninvasively monitor cerebral oxygenation. ScO2 readings are based on the fraction of reduced and oxidized hemoglobin as an indirect estimate of brain tissue oxygenation and assume a static ratio of arterial to venous intracranial blood. Conditions that alter cerebral blood flow, such as acute changes in PaCO2, may decrease accuracy. We assessed the performance of two commercial cerebral oximeters across a range of oxygen concentrations during normocapnia and hypocapnia...
January 2018: Anesthesiology
https://www.readbyqxmd.com/read/28969313/randomized-trial-of-near-infrared-spectroscopy-for-personalized-optimization-of-cerebral-tissue-oxygenation-during-cardiac-surgery
#13
C A Rogers, S Stoica, L Ellis, E A Stokes, S Wordsworth, L Dabner, G Clayton, R Downes, E Nicholson, S Bennett, G D Angelini, B C Reeves, G J Murphy
Background: We assessed whether a near-infrared spectroscopy (NIRS)-based algorithm for the personalized optimization of cerebral oxygenation during cardiopulmonary bypass combined with a restrictive red cell transfusion threshold would reduce perioperative injury to the brain, heart, and kidneys. Methods: In a randomized controlled trial, participants in three UK centres were randomized with concealed allocation to a NIRS (INVOS 5100; Medtronic Inc., Minneapolis, MN, USA)-based 'patient-specific' algorithm that included a restrictive red cell transfusion threshold (haematocrit 18%) or to a 'generic' non-NIRS-based algorithm (standard care)...
September 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28846536/effect-of-blood-pressure-elevation-on-cerebral-oxygen-desaturation-in-the-beach-chair-position
#14
Keishu Hayashi, Kumiko Tanabe, Kimito Minami, Koji Sakata, Kiyoshi Nagase, Hiroki Iida
OBJECTIVE: The beach chair position (BCP) during shoulder arthroscopy is a known risk factor for cerebral ischemia. We retrospectively investigated whether maintaining the arterial blood pressure (ABP) prevented the decrease in the regional cerebral tissue oxygen saturation (rSO2 ). METHODS: We analyzed 20 consecutive patients who underwent elective shoulder surgery in the BCP under general anesthesia. The bilateral rSO2 was monitored continuously throughout the procedure with the help of near-infrared spectroscopy (INVOS 5100 Cerebral Oximeter, Somanetics Corporation, Troy, MI, USA)...
March 2017: Asian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28823017/near-infrared-spectroscopy-monitoring-during-immediate-transition-after-birth-time-to-obtain-cerebral-tissue-oxygenation
#15
Evelyn Ziehenberger, Berndt Urlesberger, Corinna Binder-Heschl, Bernhard Schwaberger, Nariae Baik-Schneditz, Gerhard Pichler
Feasibility of cerebral tissue oxygenation measurements immediately after birth has been published starting with first values 2 min after birth. Aim of this study was to evaluate, the time periods from birth and from arrival at the resuscitation table to obtain the first cerebral tissue oxygenation values with two different near infrared spectroscopy (NIRS) devices. The present study is an analysis of exploratory parameters of two prospective observational studies. Cerebral tissue oxygen saturation was measured by the NIRO 200NX measuring "cerebral-tissue-oxygenation-index" (cTOI) or the INVOS5100C measuring "cerebral-regional-oxygen-saturation" (crSO2)...
August 19, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28728916/effects-of-spinal-immobilization-at-a-20%C3%A2-angle-on-cerebral-oxygen-saturations-measured-by-invos%C3%A2
#16
Gökhan Aksel
BACKGROUND AND AIM OF THE STUDY: In this study, we aimed to investigate whether performing the immobilization at 20° instead of 0° changes cerebral oxygenation. MATERIALS AND METHODS: 33 volunteers were put in a hard cervical collar and backboard at 0° and immobilized for 30min. The cerebral oxygen saturations of the volunteers were measured at 1, 5, and 30min after the start of the procedure (Group 1). The volunteers were asked to return the day after the Group 1 procedure but at the same time...
January 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28704836/abdominal-near-infrared-spectroscopy-detects-low-mesenteric-perfusion-early-in-preterm-infants-with-hemodynamic-significant-ductus-arteriosus
#17
Ana Ledo, Marta Aguar, Antonio Núñez-Ramiro, Pilar Saénz, Máximo Vento
BACKGROUND: The therapeutic decision to close patent ductus arteriosus in preterm infants entails great uncertainty. Near-infrared spectroscopy is a noninvasive bedside technique used to monitor mixed regional oxygen saturation. We hypothesized that near-infrared spectroscopy could identify preterm infants at risk of mesenteric hypoperfusion associated with hemodynamically significant ductus arteriosus. METHODS: This is a prospective observational study including consecutively admitted preterm infants with a gestational age <32 weeks...
2017: Neonatology
https://www.readbyqxmd.com/read/28589407/changes-of-cerebral-oxygenation-in-sequential-glenn-and-fontan-procedures-in-the-same-children
#18
Yasunori Yagi, Masataka Yamamoto, Hitoshi Saito, Toshihiro Mori, Yuji Morimoto, Takayoshi Oyasu, Tsuyoshi Tachibana, Yoichi M Ito
Recently, it is common to perform the Fontan procedure after the Glenn procedure as surgical repair for the univentricular heart. How the brain oxygen saturation (rSO2 ) values change with the cardiac restoration and the process of growth during these procedures in individual children remains unknown. In this study, we retrospectively studied rSO2 data as well as the perioperative clinical records of 30 children who underwent both Glenn and Fontan procedures by the same surgeon in the same institute. The rSO2 was measured at the beginning and end of each procedure with an INVOS 5100C...
August 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28438718/the-effect-of-50-compared-to-100-inspired-oxygen-fraction-on-brain-oxygenation-and-post-cardiac-arrest-mitochondrial-function-in-experimental-cardiac-arrest
#19
Annika Nelskylä, Jouni Nurmi, Milla Jousi, Alexey Schramko, Eero Mervaala, Giuseppe Ristagno, Markus B Skrifvars
BACKGROUND AND AIM: We hypothesised that the use of 50% compared to 100% oxygen maintains cerebral oxygenation and ameliorates the disturbance of cardiac mitochondrial respiration during cardiopulmonary resuscitation (CPR). METHODS: Ventricular fibrillation (VF) was induced electrically in anaesthetised healthy adult pigs and left untreated for seven minutes followed by randomisation to manual ventilation with 50% or 100% oxygen and mechanical chest compressions (LUCAS® )...
July 2017: Resuscitation
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
#20
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...
2017: Neonatology
keyword
keyword
26888
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"