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https://www.readbyqxmd.com/read/28846536/effect-of-blood-pressure-elevation-on-cerebral-oxygen-desaturation-in-the-beach-chair-position
#1
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 J Anesthesiol
https://www.readbyqxmd.com/read/28823017/near-infrared-spectroscopy-monitoring-during-immediate-transition-after-birth-time-to-obtain-cerebral-tissue-oxygenation
#2
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
#3
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...
July 13, 2017: 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
#4
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...
July 14, 2017: Neonatology
https://www.readbyqxmd.com/read/28589407/changes-of-cerebral-oxygenation-in-sequential-glenn-and-fontan-procedures-in-the-same-children
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/28281372/carbon-monoxide-reduces-near-infrared-spectroscopy-determined-total-hemoglobin-a-human-volunteer-study
#8
Mads J Niemann, Henrik Sørensen, Christoph Siebenmann, Carsten Lundby, Niels H Secher
Carbon monoxide (CO) increases middle cerebral artery mean flow velocity (MCAVmean), but the effect of CO on the near-infrared spectroscopy (NIRS) determined cerebral oxygenation (ScO2) is not detailed. In our study, 11 non-smoking subjects breathed 100% O2 through a closed circuit. A CO2 scrubber with CO (1.5 mL kg(-1)) was added to the circuit. Two NIRS systems (NIRO-200NX and INVOS-5100) assessed ScO2 as the ratio of oxygenated to deoxygenated hemoglobin, while venous blood samples were analyzed for carboxyhemoglobin (COHb)...
July 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28086807/detection-of-critical-cerebral-desaturation-thresholds-by-three-regional-oximeters-during-hypoxia-a-pilot-study-in-healthy-volunteers
#9
Kerry L Tomlin, Anna-Maria Neitenbach, Ulf Borg
BACKGROUND: Regional oximetry is increasingly used to monitor post-extraction oxygen status of the brain during surgical procedures where hemodynamic fluctuations are expected. Particularly in cardiac surgery, clinicians employ an interventional algorithm to restore baseline regional oxygen saturation (rSO2) when a patient reaches a critical desaturation threshold. Evidence suggests that monitoring cardiac surgery patients and intervening to maintain rSO2 can improve postoperative outcomes; however, evidence generated with one manufacturer's device may not be applicable to others...
January 13, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28077536/cerebral-oxygen-saturation-and-cardiac-output-during-anaesthesia-in-sitting-position-for-neurosurgical-procedures-a-prospective-observational-study
#10
P Schramm, I Tzanova, F Hagen, M Berres, D Closhen, G Pestel, K Engelhard
BACKGROUND: Neurosurgical operations in the dorsal cranium often require the patient to be positioned in a sitting position. This can be associated with decreased cardiac output and cerebral hypoperfusion, and possibly, inadequate cerebral oxygenation. In the present study, cerebral oxygen saturation was measured during neurosurgery in the sitting position and correlated with cardiac output. METHODS: Perioperative cerebral oxygen saturation was measured continuously with two different monitors, INVOS(®) and FORE-SIGHT(®)...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28054177/factors-associated-with-a-low-initial-cerebral-oxygen-saturation-value-in-patients-undergoing-cardiac-surgery
#11
Kensuke Kobayashi, Tadashi Kitamura, Satoshi Kohira, Shinzo Torii, Tetsuya Horai, Mitsuhiro Hirata, Toshiaki Mishima, Koichi Sughimoto, Hirotoki Ohkubo, Yusuke Irisawa, Takuya Matsushiro, Hidenori Hayashi, Yurie Miyata, Yuta Tsuchida, Naoki Ohtomo, Kagami Miyaji
Regional cerebral oximetry using near-infrared spectroscopy device, an INVOS 5100 C (Medtronic, Minneapolis, MN, USA), during cardiac surgery aims to avoid perioperative neurological impairment, especially during cardiopulmonary bypass. However, it is not uncommon to encounter critically low initial cerebral regional oxygen saturation or a low value unresponsive to intervention. Therefore, it is important to identify factors associated with low saturation value other than true cerebral hypoxia. We investigated the relationship between preoperative regional cerebral oxygen saturation and clinical variables during cardiac surgery...
June 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/27915164/can-the-cerebral-regional-oxygen-saturation-be-a-perfusion-parameter-in-shock
#12
Ashraf Al Tayar, Amr Abouelela, Khaja Mohiuddeen
INTRODUCTION: Shock, defined as a state of tissue hypoperfusion and the tissues reperfusion, is the main goal of management of shock. Increase in central venous saturation (CvSo2) and decrease in blood lactate level are useful in assessment of adequacy of tissue perfusion. Near-infrared spectroscopy is a noninvasive way to observe real-time changes in regional cerebral saturation and has been used in patients with different brain diseases. There is a small body of literature suggesting that cerebral regional oxygen saturation (CrSo2) monitoring added a value in assessment and management of intensive care unit (ICU) patients...
April 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/27913885/effect-of-sensor-location-on-regional-cerebral-oxygen-saturation-measured-by-invos-5100-in-on-pump-cardiac-surgery
#13
Ah-Reum Cho, Jae-Young Kwon, Choongrak Kim, Jung-Min Hong, Christine Kang
PURPOSE: Near-infrared spectroscopy sensors often cannot be attached at the commercially recommended locations because combined use of neurological monitoring systems is common during on-pump cardiac surgery. The primary purpose of this study was to compare the incidence of regional cerebral oxygen desaturation and regional cerebral oxygen saturation values detected using near-infrared spectroscopy between the upper and lower forehead during on-pump cardiac surgery. METHODS: A prospective observational study was conducted with 25 adult patients scheduled for elective on-pump cardiac surgery...
April 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/27895999/quantifying-the-effect-of-adipose-tissue-in-muscle-oximetry-by-near-infrared-spectroscopy
#14
Nassim Nasseri, Stefan Kleiser, Daniel Ostojic, Tanja Karen, Martin Wolf
Change of muscle tissue oxygen saturation (StO2), due to exercise, measured by near infrared spectroscopy (NIRS) is known to be lower for subjects with higher adipose tissue thickness. This is most likely not physiological but caused by the superficial fat and adipose tissue. In this paper we assessed, in vitro, the influence of adipose tissue thickness on muscle StO2, measured by NIRS oximeters. We measured StO2 of a liquid phantom by 3 continuous wave (CW) oximeters (Sensmart Model X-100 Universal Oximetry System, INVOS 5100C, and OxyPrem v1...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27891584/an-observational-study-of-the-macro-and-micro-haemodynamic-implications-of-epidural-anaesthesia-in-children
#15
L Triffterer, P Marhofer, G Lechner, T C Marksz, O Kimberger, W Schmid, D Marhofer
The haemodynamic implications of epidural anaesthesia in children are poorly documented. We report macro- and micro-haemodynamic data from an observational study of 25 children ranging from neonates to six-years old, who underwent surgery conducted with a specific combination of monitoring systems. We analysed 90 min of study-related monitoring after epidural catheterisation, with skin incision taking place after around 30 min. We recorded macrohaemodynamic parameters (monitored using LiDCOrapid) including heart rate, mean arterial pressure, cardiac output, stroke volume, systemic vascular resistance and stroke volume variation...
April 2017: Anaesthesia
https://www.readbyqxmd.com/read/27886367/tissue-ischemia-worsens-during-hemodialysis-in-end-stage-renal-disease-patients
#16
Jan Malik, Jaroslav Kudlicka, Jana Lachmanova, Anna Valerianova, Katarina Rocinova, Magdalena Bartkova, Vladimir Tesar
BACKGROUND: Cognitive deficit is a common problem in end-stage renal disease (ESRD) patients. Ultrafiltration and hemodialysis lead to profound hemodynamic changes. The aim of this pilot study was to describe brain and hand oxygenation values in ESRD patients and their changes during hemodialysis. METHODS: Twenty-seven patients treated by chronic hemodialysis and 17 controls patients of the same age were included in the study. Regional saturation of oxygen (SrO2) was measured at the brain frontal lobe and at the hand with dialysis access using the INVOS 5100C...
January 18, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/27878503/evaluation-of-different-near-infrared-spectroscopy-technologies-for-assessment-of-tissue-oxygen-saturation-during-a-vascular-occlusion-test
#17
Kevin Steenhaut, Koen Lapage, Thierry Bové, Stefan De Hert, Annelies Moerman
An increasing number of NIRS devices are used to provide measurements of peripheral tissue oxygen saturation (StO2). The aim of the present study is to test the hypothesis that despite technological differences between devices, similar trend values will be obtained during a vascular occlusion test. The devices compared are NIRO-200NX, which measures StO2 and oxyhemoglobin by spatially resolved spectroscopy and the Beer-Lambert law, respectively, and INVOS 5100C and Foresight Elite, which both measure StO2 with the Beer-Lambert law, enhanced with the spatial resolution technique...
November 22, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27872834/factors-associating-with-oxygenation-of-lower-limb-muscle-tissue-in-hemodialysis-patients
#18
Haruhisa Miyazawa, Susumu Ookawara, Kiyonori Ito, Katsunori Yanai, Hiroki Ishii, Taisuke Kitano, Mitsutoshi Shindo, Yuichiro Ueda, Yoshio Kaku, Keiji Hirai, Taro Hoshino, Kaoru Tabei, Yoshiyuki Morishita
AIM: To evaluate the lower-limb muscle oxygenation in hemodialysis (HD) patients and identify the factors associating with muscle oxygenation. METHODS: Sixty-seven HD patients (53 men and 14 women; mean age, 67.1 ± 1.2 years; mean HD duration, 5.6 ± 0.9 years) were recruited. In addition, 15 healthy individuals (nine men and six women; mean age, 38.2 ± 4.6 years) were recruited as the control group. Lower-limb muscle regional saturation of oxygen (rSO2) was monitored on the lateral side of the gastrocnemius muscle before HD using an INVOS 5100C (Covidien Japan, Tokyo, Japan), which utilizes near-infrared spectroscopy...
November 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27807663/effect-of-posture-and-extracranial-contamination-on-results-of-cerebral-oximetry-by-near-infrared-spectroscopy
#19
COMPARATIVE STUDY
Shinya Kato, Kenji Yoshitani, Yosuke Kubota, Yuzuru Inatomi, Yoshihiko Ohnishi
BACKGROUND: Near-infrared spectroscopy (NIRS)-based cerebral oximetry is a noninvasive technology used to estimate regional cerebral oxygen saturation (rSO2). Extracranial blood flow is known to substantially affect rSO2 values measured by most clinically available devices. Several studies have also reported that the Trendelenburg position and upright position have a larger effect on rSO2 measurements than the supine position. Therefore, we investigated the effect of these two positions (the Trendelenburg position versus the upright position) and extracranial contamination on rSO2 measurements obtained using two commercially available devices and one prototype device...
February 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/27713204/-rupture-of-saccular-brachiocephalic-artery-aneurysm-after-one-year-and-seven-months-from-coil-embolization-report-of-a-case
#20
Shinya Terada, Masaki Tabuchi, Akihiko Yamauchi
A 52-years-old man, who had undergone coil embolization of saccular aneurysm of the brachiocephalic artery, presented with right back discomfort. Diagnosis by computed tomography was difficult because of an artifact from the coils. Angiography, on the other hand, revealed a rupture of the aneurysm, and emergency surgery was performed. A Y-shaped graft was anastomosed to the ascending aorta under partial clamp. Then, one of its branches was anastomosed to the common carotid artery also under partial clamp in an end-to-side fashion...
October 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
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