Abstract:
:This study aimed to investigate and compare the performance of the algorithms contained in the newest generation of pulse oximeters (Masimo SET in IVY2000, Nellcor Oxismart N-3000, Agilent M3 rev. B) against a traditional pulse oximeter (Agilent CMS rel. A.0). The benchmark was performed in an efficient and reproducible way in the laboratory environment using patient signal recordings complemented by a two-hand volunteer motion test. A novel method of creating artifact/reference signal pairs from a clinical database, the noise-mix-composition (NMC), was developed. The new method enabled the simulation of critical clinical situations in a more realistic way than the usual two hand volunteer studies. An advantage of the laboratory tests over live clinical studies was that a continuous saturation reference was available, allowing accurate on-going determination of the SpO2 error. A new quantitative performance measure, the non-performance index (NPI), was developed and applied to the benchmark results. It covers the 3 performance aspects of a pulse oximeter: (1) SpO2 accuracy, (2) pulse rate accuracy and (3) drop out times. These factors were weighted according to clinical importance determined by a survey. During the restricted conditions of steady state and forced motion test on healthy volunteers Masimo/Ivy's pulse oximeter performed best with a 2.6 fold improvement over the conventional technology. Clear improvements were also found for Agilent's M3 (1.6 fold) and Nellcor's N-3000 (1.6 fold). In contrast, the clinically oriented NMC study yielded the best performance improvement--as measured in NPI numbers--for Agilent's M3 rev. B (1.6 fold) and due to more frequent SpO2 errors only 1.5 for Masimo and 1.3 for N-3000. A large difference was found for the dropout rate: the lowest was achieved by Masimo (3.0% of total time), the largest by Nellcor N-3000 (24.1% of total time), a factor which was rated high by clinicians. Very pronounced improvements (between 2.3 and 3.4 fold) on all of the newer devices were found for the pulse rate. The NMC turned out to be a very useful tool for generating a standard signal set for algorithm development and benchmarking purposes that eliminates repetitive clinical testing in early stages. The applicability of its results needs confirmation by clinical live studies.
journal_name
J Clin Monit Computjournal_title
Journal of clinical monitoring and computingauthors
Kästle SW,Konecny Edoi
10.1023/a:1011420228523subject
Has Abstractpub_date
2000-01-01 00:00:00pages
509-22issue
7eissn
1387-1307issn
1573-2614journal_volume
16pub_type
杂志文章abstract::Heart failure is the main cause of poor outcome following open heart surgery and experimental studies have demonstrated that glucose-insulin-potassium (GIK) infusion exerts cardioprotective effects by reducing myocardial ischemia-reperfusion injuries. This randomized controlled trial was designed to assess the effects...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-019-00280-5
更新日期:2020-02-01 00:00:00
abstract:OBJECTIVE:To demonstrate the usefulness of rectus femoris muscle MEPs monitoring in a paraparetic neuromuscular scoliosis case. METHODS:Multiple monitoring modalities including SEPs, MEPs and EMG were performed for an anterior and posterior correction surgery for a neuromuscular scoliosis patient with no motor and sen...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-011-9325-x
更新日期:2012-02-01 00:00:00
abstract::To date, most of the studies on safety and efficacy of supraglottic airway devices were done in Caucasian patients, and the results may not be extrapolated to Asian patients due to the different airway anatomy. We conducted this study to compare Supreme™ LMA (SLMA) and Proseal™ LMA (PLMA) size 1.5 in anaesthetized chi...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10877-018-0109-4
更新日期:2018-12-01 00:00:00
abstract::The mesenteric traction syndrome (MTS) is associated with prostacyclin (PGI2) facilitated systemic vasodilatation during surgery and is identified by facial flushing. We hypothesized that severe facial flushing would be related to the highest concentrations of plasma PGI2 and accordingly to the highest levels of skin ...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-018-0226-0
更新日期:2019-10-01 00:00:00
abstract:OBJECTIVES:Optimizing cerebral oxygenation is of paramount importance in certain intraoperative situations. There is, however, a paucity of published data pertaining to changes in cerebral oxygenation seen with increases in the inspired fraction of oxygen (FIO2) or end-tidal carbon dioxide (PETCO2) in anesthetized pati...
journal_title:Journal of clinical monitoring and computing
pub_type: 临床试验,杂志文章
doi:10.1007/s10877-010-9265-x
更新日期:2010-12-01 00:00:00
abstract::Near-infrared spectroscopy (NIRS) has been used to detect in vivo microvascular alterations by means of a vascular occlusion test. We sought to analyse by NIRS the microcirculatory profile of patients undergoing prolonged tourniquet-induced bloodless condition for extremity surgery, and compare the results with time o...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-016-9877-x
更新日期:2017-06-01 00:00:00
abstract::Intraoperative neurophysiological monitoring (IONM) is widely used in spinal cord tumors (SCTs) removal surgery. This study mainly hypothesized that patients with prolonged latency of preoperative somatosensory evoked potentials (preSEPLat) would have more deteriorated intraoperative evoked potentials. Among 506 patie...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-020-00584-x
更新日期:2020-09-29 00:00:00
abstract::The American Society of Anesthesiologist recommends peripheral physiological monitoring during general anesthesia, which offers no information regarding the effects of anesthetics on the brain. Since no "gold standard" method exists for this evaluation, such a technique is needed to ensure patient comfort, procedure q...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-017-9998-x
更新日期:2018-02-01 00:00:00
abstract:OBJECTIVE:This study evaluates a method for calibrating mainstream CO(2) analysers in which CO(2) partial pressure (P (CO2)) is calculated as a function of the outputs of CO(2) and O(2) analysers. METHODS:Three mass flow controllers were used to generate 25 different reference mixtures of O(2), N(2) and CO(2). Referen...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-005-9005-9
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVE:Transcranial Motor Evoked Potentials (TcMEPs) are sometimes used during lumbar spine surgery in order to detect and prevent an intraoperative nerve root injury. Typically, a fixed stimulus is applied, and one monitors for changes in response amplitude from several myotomes. Increased stimulating voltage may o...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-010-9269-6
更新日期:2010-12-01 00:00:00
abstract::Arterial blood gas (ABG) analysis is an essential tool in the clinical assessment of acutely ill patients. Venous to arterial conversion (v-TAC), a mathematical method, has been developed recently to convert peripheral venous blood gas (VBG) values to arterialized VBG (aVBG) values. The aim of this study was to test t...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-018-0197-1
更新日期:2019-08-01 00:00:00
abstract::Transesophageal echocardiography of the spine has been difficult to perform, and high-quality images have been difficult to obtain with earlier available technology. New capabilities in hardware and software reconstruction may allow more reliable clinical data to be obtained. We describe an initial successful attempt ...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-014-9576-4
更新日期:2015-02-01 00:00:00
abstract::While the effects of phenylephrine (PE) and ephedrine (E) on cerebral oxygen saturation (rScO2) already has been studied, the effect on paraspinal oxygen saturation (rSpsO2) is still unexplored. This study aims to assess the effect of PE and E on rScO2 and rSpsO2, measured with near-infrared spectroscopy. A randomized...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-019-00328-6
更新日期:2020-04-01 00:00:00
abstract:OBJECTIVE:To define the longest sampling interval which will faithfully record the time course of episodes of severe hypotension and hypoxia in anesthetised patients. METHODS:Electronic anesthetic records of 1501 patients were analyzed retrospectively for hypotension where measured systolic blood pressure fell to 60 m...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1023/a:1009978414365
更新日期:1998-07-01 00:00:00
abstract::Patient-ventilator asynchrony is associated with intolerance to noninvasive ventilation (NIV) and worsened outcomes. Our goal was to develop a tool to determine a patient needs for intervention by a practitioner due to the presence of patient-ventilator asynchrony. We postulated that a clinician can determine when a ...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-019-00408-7
更新日期:2020-10-01 00:00:00
abstract::The number of high-risk patients undergoing surgery is growing. To maintain adequate hemodynamic functioning as well as oxygen delivery to the vital organs (DO2) amongst this patient population, a rapid assessment of cardiac functioning is essential for the anesthesiologist. Pinpointing any underlying cardiovascular p...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章,评审
doi:10.1007/s10877-020-00534-7
更新日期:2020-05-26 00:00:00
abstract::Electrical impedance tomography (EIT) is used in lung physiology monitoring. There is evidence that EIT is linearly associated with global tidal volume (VT) in clinically healthy patients where no positive end-expiratory pressure (PEEP) is applied. This linearity has not been challenged by altering lung conditions. Th...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-021-00651-x
更新日期:2021-01-25 00:00:00
abstract:BACKGROUND:The value of the impedance cardiography (IC) method for measuring cardiac output (CO) with the subject in the left lateral position has not yet been established. We compared the CO after a 30 degrees head-up tilt with the subjects in the supine and left lateral position. METHODS:Thirty healthy young volunte...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1023/a:1009968513512
更新日期:1999-12-01 00:00:00
abstract:OBJECTIVE:This study tests the hypothesis that a graphical object display (a data display consisting of meaningful shapes) will affect the ability of anesthesiologists to perform a diagnostic task rapidly and correctly. The diagnostic tasks studied were recognition and differentiation of five etiologies of shock--anaph...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1023/a:1009914019889
更新日期:1999-01-01 00:00:00
abstract:INTRODUCTION:Effectively monitoring the level of consciousness during general anesthesia is clinically beneficial to both the patient and the physician. An electroencephalogram (EEG)-based level-of-consciousness monitor can help minimize intraoperative awareness as well as the effects of over-sedation. In this study, w...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-010-9246-0
更新日期:2010-08-01 00:00:00
abstract::FloTrac/Vigileo™ system is based on arterial pressure waveform analysis arterial pressure-based CO (APCO). Therefore, systemic vascular resistance (SVR) can influence the accuracy of APCO. The purpose of this study is to evaluate the relationship between SVR and the accuracy of APCO. We managed 50 consecutive patients...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-013-9481-2
更新日期:2013-12-01 00:00:00
abstract::Perioperative goal-directed therapy is considered to improve patient outcomes after high-risk surgery. The association of compliance with perioperative goal-directed therapy protocols and postoperative outcomes is unclear. The purpose of this study is to determine the effect of protocol compliance on postoperative out...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-020-00585-w
更新日期:2020-09-12 00:00:00
abstract::Mathematical models can be deployed to simulate physiological processes of the human organism. Exploiting these simulations, reactions of a patient to changes in the therapy regime can be predicted. Based on these predictions, medical decision support systems (MDSS) can help in optimizing medical therapy. An MDSS desi...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-013-9502-1
更新日期:2014-12-01 00:00:00
abstract::Tissue perfusion monitoring is increasingly being employed clinically in a non-invasive fashion. In this end-of-year summary of the Journal of Clinical Monitoring and Computing, we take a closer look at the papers published recently on this subject in the journal. Most of these papers focus on monitoring cerebral perf...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章,评审
doi:10.1007/s10877-020-00504-z
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVE:To compare expert-generated textual summaries of physiological data with trend graphs, in terms of their ability to support neonatal Intensive Care Unit (ICU) staff in making decisions when presented with medical scenarios. METHODS:Forty neonatal ICU staff were recruited for the experiment, eight from each o...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-005-0879-3
更新日期:2005-06-01 00:00:00
abstract::Continual vital sign assessment on the general care, medical-surgical floor is expected to provide early indication of patient deterioration and increase the effectiveness of rapid response teams. However, there is concern that continual, multi-parameter vital sign monitoring will produce alarm fatigue. The objective ...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-015-9790-8
更新日期:2016-12-01 00:00:00
abstract::Changes in expired nitric oxide (NO) occur in airway inflammation and have proved to be important in the monitoring of inflammatory disease processes such as asthma. We set out to develop a novel hand-held NO-analyzer with a performance comparable to the present more costly and complex chemiluminescence instruments. T...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-005-1158-z
更新日期:2004-12-01 00:00:00
abstract::We have attempted to list all the clinical applications of capnography described to date and classify them into categories. From an extensive Pubmed search 46 clinical applications of capnography were listed. To classify these we used six categories- Airway, Breathing, Circulation, Anesthetic Delivery Apparatus, Homeo...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-007-9094-8
更新日期:2007-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Ventricular late potentials (LP) recording with signal-averaged electrocar- diogram allow identifying patients at risk of sudden death and ventricular tachycardia. Cardiac surgery with cardiopulmonary bypass (CPB) could predispose to the development of myocardial ischemia related to imperfect c...
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章
doi:10.1007/s10877-011-9305-1
更新日期:2011-08-01 00:00:00
abstract:OBJECTIVES:Bioreactance, the analysis of intrabeat variations in phase of a transthoracic voltage in response to an applied high frequency transthoracic current, was recently introduced for noninvasive cardiac output measurement (NICOM). We evaluated NICOM compared to thermo- dilution (TD) in several clinical settings....
journal_title:Journal of clinical monitoring and computing
pub_type: 杂志文章,多中心研究
doi:10.1007/s10877-008-9112-5
更新日期:2008-04-01 00:00:00