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continuous noninvasive hemoglobin

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https://www.readbyqxmd.com/read/29200161/noninvasive-measurement-of-hemoglobin-using-spectrophotometry-is-it-useful-for-the-critically-ill-child
#1
Basak Akyildiz
This study compared the accuracy of noninvasively measuring hemoglobin using spectrophotometry (SpHb) with a pulse CO-oximeter and laboratory hemoglobin (Hb) measurements. A total of 345 critically ill children were included prospectively. Age, sex, and factors influencing the reliabilityof SpHb such as SpO2, heart rate, perfusion index (PI), and vasoactive inotropic score were recorded. SpHb measurements were recorded during the blood draw and compared with the Hb measurement. Thirteen patients (low PI in 9 patients and no available Hb in 4 patients) were excluded and 332 children were eligible for final analysis...
December 1, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29045955/-comparison-between-continuous-noninvasive-hemoglobin-monitoring-and-venous-blood-hemoglobin-monitoring-in-children-with-kidney-disease
#2
X Y Liu, X Q Yang, H J Xiao, J Ding
OBJECTIVE: To assess the correlation and consistency between continuous noninvasive hemoglobin detection and venous blood hemoglobin detection in children with kidney disease, and try to analyze the affecting factors. Try to provide a reference for the monitoring of hemoglobin in children with kidney disease by continuous noninvasive hemoglobin detection technique. METHODS: Eighty-five inpatient children with kidney disease, 50 boys (58.8%) and 35 girls (41.2%), aged from 3 years old to 18 years old (9...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28840157/evaluation-of-evoked-responses-to-pulse-matched-high-frequency-and-intermittent-theta-burst-transcranial-magnetic-stimulation-using-simultaneous-functional-near-infrared-spectroscopy
#3
Adrian Curtin, Junfeng Sun, Hasan Ayaz, Zhenying Qian, Banu Onaral, Jijun Wang, Shanbao Tong
Transcranial magnetic stimulation (TMS) is a noninvasive method used to excite or inhibit cortical activity for experimental, diagnostic, and therapeutic interventions. However, nonmotor regions of the brain targeted in TMS therapies, such as the dorsolateral prefrontal cortex (DLPFC), offer no extrinsic response to stimulation, resulting in a need for a practical method for the evaluation of treatment. We sought to determine the capability of a continuous-wave light emitting diodes (LED)-based functional near-infrared spectroscopy (fNIRS) system to measure evoked cortical hemoglobin changes in the DLPFC during the simultaneous application of TMS to the left-DLPFC under brief stimulation paradigms used in the clinic...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/28453275/dielectric-response-of-cytoplasmic-water-and-its-connection-to-the-vitality-of-human-red-blood-cells-ii-the-influence-of-storage
#4
Evgeniya Levy, Marcelo David, Gregory Barshtein, Saul Yedgar, Leonid Livshits, Paul Ben Ishai, Yuri Feldman
Maintaining an appropriate inventory of packaged blood products is a critical part of modern medicine. Consequently, the assessment of red blood cell (RBC) functionality is instrumental for the monitoring of the quality of stored RBC (sRBC) in the blood bank. We present a comprehensive study of sRBC lesion kinetics in SAGM (saline, adenine, glucose, mannitol) solution, using microwave dielectric spectroscopy (0.5-50 GHz) and cell deformability. As part of the research, we have isolated the microwave dielectric response of cytoplasmic water in sRBC...
May 11, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28106356/accuracy-of-non-invasive-hemoglobin-monitoring-by-pulse-co-oximeter-during-liver-transplantation
#5
Gulay Erdogan Kayhan, Yusuf Z Colak, Mukadder Sanli, Muharrem Ucar, Huseyin I Toprak
BACKGROUND: Hemoglobin level monitoring is essential during liver transplantation (LT) due to substantial blood loss. We evaluated the accuracy of noninvasive and continuous hemoglobin monitoring (SpHb) obtained by a transcutaneous spectrophotometry-based technology (Masimo Corporation, Irvine, CA) compared with conventional laboratory Hb measurement (HbL) during LT. Additionally, we made subgroup analyses for distinct surgical phases that have special features and hemodynamic problems and thus may affect the accuracy of SpHb...
January 20, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28034464/noninvasive-hemoglobin-monitoring-in-critically-ill-pediatric-patients-at-risk-of-bleeding
#6
P García-Soler, J M Camacho Alonso, J M González-Gómez, G Milano-Manso
OBJECTIVE: To determine the accuracy and usefulness of noninvasive continuous hemoglobin (Hb) monitoring in critically ill patients at risk of bleeding. DESIGN: An observational prospective study was made, comparing core laboratory Hb measurement (LabHb) as the gold standard versus transcutaneous hemoglobin monitoring (SpHb). SETTING: Pediatric Intensive Care Unit of a tertiary University Hospital. PATIENTS: Patients weighing >3kg at risk of bleeding...
May 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/27836099/-management-of-cardiogenic-shock-results-from-a-survey-in-france-and-belgium
#7
S Champion, N Deye
PURPOSE: Physician survey on cardiogenic shock management; recommendations for the management of patients with cardiogenic shock are based mostly on experts' opinion. METHODS: Overall 1585 emails were sent to "senior" intensive care physicians from France and Belgium from September 2014 to march 2015. Response rate was 10% (157 respondents). Agreement was assessed based on RAND/UCLA methodology. RESULTS: Continuous monitoring of cardiac output, vascular filling, noninvasive ventilation were deemed appropriate...
April 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/27695597/continuous-qualitative-electroencephalography-as-a-noninvasive-neuromonitor
#8
Zachary D Threlkeld, Mohan Kottapally, Aimee Aysenne, Nerissa Ko
Intracranial pressure (ICP) monitoring frequently guides key decisions in the management of diseases causing intracranial hypertension. Although typically measured by invasive means, contraindications may leave the clinician with little recourse for dynamic ICP evaluation-particularly when the patient's mental status is compromised. We describe here a healthy 18-year-old woman who subacutely progressed to coma due to diffuse cerebral venous sinus thrombosis. Heparinization precluded the use of invasive ICP monitoring, and electroencephalography (EEG) was used novelly as a surrogate ICP monitor...
October 2016: Neurohospitalist
https://www.readbyqxmd.com/read/27638999/time-taken-to-the-maximum-increase-in-the-oxygenated-hemoglobin-level-in-calf-muscle-as-a-predictor-of-mild-and-moderate-post-thrombotic-syndrome
#9
Takashi Yamaki, Yuki Hasegawa, Atsuyoshi Osada, Hisato Konoeda, Atsumori Hamahata, Masakazu Ochi, Motohiro Nozaki, Hiroyuki Sakurai
BACKGROUND: Near-infrared spectroscopy (NIRS) allows continuous noninvasive monitoring of changes in the tissue levels of oxygenated hemoglobin (O2Hb) and deoxygenated hemoglobin (HHb) and can identify the severity of chronic venous diseases. Here we investigated the predictors of post-thrombotic syndrome (PTS) using NIRS in patients with a first episode of deep venous thrombosis (DVT). METHODS: The study enrolled 129 patients with DVT. Risk factors in each patient were assessed at presentation...
October 2016: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27501120/noninvasive-continuous-hemoglobin-monitoring-in-combat-casualties-a-pilot-study
#10
Elizabeth Bridges, Jennifer J Hatzfeld
OBJECTIVE: To describe the accuracy and precision of noninvasive hemoglobin measurement (SpHb) compared with laboratory or point-of-care Hb, and SpHb ability to trend in seriously injured casualties. METHODS: Observational study in a convenience sample of combat casualties undergoing resuscitation at two US military trauma hospitals in Afghanistan. SpHb was obtained using the Masimo Rainbow SET (Probe Rev E/Radical-7 Pulse CO-Oximeter v 7.6.2.1). Clinically indicated Hb was analyzed with a Coulter or iStat and compared with simultaneous SpHb values...
September 2016: Shock
https://www.readbyqxmd.com/read/27320558/accuracy-and-trending-of-continuous-noninvasive-hemoglobin-monitoring-in-patients-undergoing-liver-transplantation
#11
P H Huang, B F Shih, Y-F Tsai, P C H Chung, F C Liu, H P Yu, W C Lee, C J Chang, C C Lin
BACKGROUND: Shift in large fluid volumes and massive blood loss during liver transplantation frequently leads to rapid changes in hemoglobin (Hb) concentration; thus, to ensure adequate tissue oxygenation, accurate and rapid determination of Hb concentration is essential in transplant recipients. The Radical-7 Pulse CO-Oximeter provides a noninvasive and continuous way to monitor Hb concentration (SpHb) in real time and is an ideal candidate for use during liver transplantation. In this study, we assessed the relationship between SpHb and total Hb (tHb) obtained from arterial blood samples during surgery...
May 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27206637/near-infrared-spectroscopy-the-new-must-have-tool-in-the-intensive-care-unit
#12
REVIEW
Michael Stuart Green, Sankalp Sehgal, Rayhan Tariq
Standard hemodynamic monitoring such as blood pressure and pulse oximetry may only provide a crude estimation of organ perfusion in the critical care setting. Near-infrared spectroscopy (NIRS) is based on the same principle as a pulse oximeter and allows continuous noninvasive monitoring of hemoglobin oxygenation and deoxygenation and thus tissue saturation "StO2" This review aims to provide an overview of NIRS technology principles and discuss its current clinical use in the critical care setting. The study selection was performed using the PubMed database to find studies that investigated the use of NIRS in both the critical care setting and in the intensive care unit...
September 2016: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27183375/advanced-uses-of-pulse-oximetry-for-monitoring-mechanically-ventilated-patients
#13
REVIEW
Gerardo Tusman, Stephan H Bohm, Fernando Suarez-Sipmann
Pulse oximetry is an undisputable standard of care in clinical monitoring. It combines a spectrometer to detect hypoxemia with a plethysmograph for the diagnosis, monitoring, and follow-up of cardiovascular diseases. These pulse oximetry capabilities are extremely useful for assessing the respiratory and circulatory status and for monitoring of mechanically ventilated patients. On the one hand, the key spectrography-derived function of pulse oximetry is to evaluate a patient's gas exchange that results from a particular ventilatory treatment by continuously and noninvasively measuring arterial hemoglobin saturation (SpO2)...
January 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27107502/major-thoracic-surgery-in-jehovah-s-witness-a-multidisciplinary-approach-case-report
#14
Marco Rispoli, Carlo Bergaminelli, Moana Rossella Nespoli, Mariana Esposito, Dario Maria Mattiacci, Antonio Corcione, Salvatore Buono
INTRODUCTION: A bloodless surgery can be desirable also for non Jehovah's witnesses patients, but requires a team approach from the very first assessment to ensure adequate planning. PRESENTATION OF THE CASE: Our patient, a Jehovah's witnesses, was scheduled for right lower lobectomy due to pulmonary adenocarcinoma. Her firm denies to receive any kind of transfusions, forced clinicians to a bloodless management of the case. DISCUSSION: Before surgery a meticulous coagulopathy research and hemodynamic optimization are useful to prepare patient to operation...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27058052/specificity-of-compensatory-reserve-and-tissue-oxygenation-as-early-predictors-of-tolerance-to-progressive-reductions-in-central-blood-volume
#15
Jeffrey T Howard, Jud C Janak, Carmen Hinojosa-Laborde, Victor A Convertino
We previously reported that measurements of muscle oxygen saturation (SmO2) and the compensatory reserve index (CRI) provided earlier indication of reduced central blood volume than standard vital signs (e.g., blood pressure, heart rate, arterial oxygen saturation). In the present study, we hypothesized that the CRI would provide greater sensitivity and specificity to detect progressive decrease in central circulating blood volume compared with SmO2. Continuous noninvasive measures of CRI (calculated from feature changes in the photoplethysmographic arterial waveforms) were collected from 55 healthy volunteer subjects before and during stepwise lower body negative pressure (LBNP) to the onset of hemodynamic decompensation...
September 2016: Shock
https://www.readbyqxmd.com/read/26937862/evaluation-of-noninvasive-hemoglobin-monitoring-in-surgical-critical-care-patients
#16
Tim Xu, Ting Yang, Joseph B Kim, Mark C Romig, Adam Sapirstein, Bradford D Winters
OBJECTIVE: To assess the clinical utility of noninvasive hemoglobin monitoring based on pulse cooximetry in the ICU setting. DESIGN AND SETTING: A total of 358 surgical patients from a large urban, academic hospital had the noninvasive hemoglobin monitoring pulse cooximeter placed at admission to the ICU. Core and stat laboratory hemoglobin measurements were taken at the discretion of the clinicians, who were blinded to noninvasive hemoglobin monitoring values. MEASUREMENT AND MAIN RESULTS: There was a poor correlation between the 2,465 time-matched noninvasive hemoglobin monitoring and laboratory hemoglobin measurements (r = 0...
June 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/26934885/colorectal-cancer-screening-stool-dna-and-other-noninvasive-modalities
#17
REVIEW
James R Bailey, Ashish Aggarwal, Thomas F Imperiale
Colorectal cancer screening dates to the discovery of precancerous adenomatous tissue. Screening modalities and guidelines directed at prevention and early detection have evolved and resulted in a significant decrease in the prevalence and mortality of colorectal cancer via direct visualization or using specific markers. Despite continued efforts and an overall reduction in deaths attributed to colorectal cancer over the last 25 years, colorectal cancer remains one of the most common causes of malignancy-associated deaths...
March 2016: Gut and Liver
https://www.readbyqxmd.com/read/26898593/effects-of-indigo-carmine-intravenous-injection-on-noninvasive-and-continuous-total-hemoglobin-measurement-with-using-the-revision-l-sensor
#18
LETTER
Tsuyoshi Isosu, Shinju Obara, Takahiro Hakozaki, Tsuyoshi Imaizumi, Yuzo Iseki, Midori Mogami, Satoshi Ohashi, Yukihiro Ikegami, Shin Kurosawa, Masahiro Murakawa
The effects of intravenous injection of indigo carmine on noninvasive and continuous total hemoglobin (SpHb) measurement were retrospectively evaluated with the Revision L sensor. The subjects were 18 patients who underwent elective gynecologic surgery under general anesthesia. During surgery, 5 mL of 0.4 % indigo carmine was injected intravenously, and changes in SpHb concentrations between before and after the injection were evaluated. The mean age was 52.4 ± 12.8 years. Before injection, the median SpHb level was 10...
April 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/26788547/tutorial-on-platform-for-optical-topography-analysis-tools
#19
Stephanie Sutoko, Hiroki Sato, Atsushi Maki, Masashi Kiguchi, Yukiko Hirabayashi, Hirokazu Atsumori, Akiko Obata, Tsukasa Funane, Takusige Katura
Optical topography/functional near-infrared spectroscopy (OT/fNIRS) is a functional imaging technique that noninvasively measures cerebral hemoglobin concentration changes caused by neural activities. The fNIRS method has been extensively implemented to understand the brain activity in many applications, such as neurodisorder diagnosis and treatment, cognitive psychology, and psychiatric status evaluation. To assist users in analyzing fNIRS data with various application purposes, we developed a software called platform for optical topography analysis tools (POTATo)...
January 2016: Neurophotonics
https://www.readbyqxmd.com/read/26736491/anterior-temporal-artery-tap-to-identify-systemic-interference-using-short-separation-nirs-measurements-a-nirs-eeg-tdcs-study
#20
Mehak Sood, Utkarsh Jindal, Shubhajit Roy Chowdhury, Abhijit Das, Daniel Kondziella, Anirban Dutta
Transcranial direct current stimulation (tDCS) has been shown to modulate neural activity. Neural activity has been shown to be closely related, spatially and temporally, to cerebral blood flow (CBF) that supplies glucose via neurovascular coupling. Therefore, noninvasive and continuous monitoring of neural activity is possible with a measure of cerebral hemoglobin oxygenation using near-infrared spectroscopy (NIRS). In principal accordance, NIRS can capture the hemodynamic response to tDCS but the challenge remains in removing the systemic interference occurring in the superficial layers of the head that are also affected by tDCS...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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