Influence of tidal volume and positive end-expiratory pressure on ventilation distribution and oxygenation during one-lung ventilation.

Abstract:

OBJECTIVE:The aim of the study was to explore the feasibility of titrating tidal volume (V T) and positive end-expiratory pressure (PEEP) during one-lung ventilation (OLV) based on ventilation distribution and oxygenation. APPROACH:Twenty-four consecutive patients requiring intubation with a double-lumen tube and subsequent OLV for thoracic surgical procedures were examined prospectively in lateral posture. Electrical impedance tomography (EIT), blood gases, respiratory mechanics were successfully measured in 21 patients at various combinations of V T (4 ml kg-1, 6 ml kg-1, 8 ml kg-1 body weight) and PEEP (0 cm H2O, 4 cm H2O, 8 cm H2O) during OLV. MAIN RESULTS:Low V T and low PEEP resulted in low global respiratory system compliance (C rs). Arterial partial pressure of O2 (PaO2) decreased with falling V T. Regional C rs measured with EIT showed high values at high V T and high PEEP in all but two patients. Regional C rs in mid and most dependent regions indicated tidal recruitment/derecruitment in eight patients at 8 ml kg-1 of V T and 4 cm H2O of PEEP; in four patients at 8 ml kg-1 and 0 cm H2O; in one patient at 6 ml kg-1 and 8 cm H2O. The changes in regional C rs induced by decreasing PEEP from 8 to 4 cm H2O were much smaller than those from 4 to 0 cm H2O. Ventilation distribution was most inhomogeneous with V T of 8 ml kg-1. All measures differed significantly among various V T and PEEP steps (p  <  0.05). SIGNIFICANCE:By using EIT in combination with PaO2, it is feasible to titrate V T and PEEP at the bedside during OLV.

journal_name

Physiol Meas

authors

Zhao Z,Wang W,Zhang Z,Xu M,Frerichs I,Wu J,Moeller K

doi

10.1088/1361-6579/aaaeb2

subject

Has Abstract

pub_date

2018-03-29 00:00:00

pages

034003

issue

3

eissn

0967-3334

issn

1361-6579

journal_volume

39

pub_type

杂志文章
  • A portable device with low-power consumption for monitoring mouse vital signs during in vivo photoacoustic imaging and photothermal therapy.

    abstract:OBJECTIVE:The aim of this study was to monitor the physiological changes and cytotoxic effects of exogenous contrast agents during photoacoustic imaging (PAI) and photothermal therapy (PTT). In this paper, a low-power telemetric device for mouse vital signs monitoring was designed and demonstrated. APPROACH:The power ...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/1361-6579/aba6a1

    authors: Phan DT,Phan TTV,Bui NT,Park S,Choi J,Oh J

    更新日期:2021-01-01 00:00:00

  • The variability of the photoplethysmographic signal--a potential method for the evaluation of the autonomic nervous system.

    abstract::The heart rate variability is composed of low- and high-frequency fluctuations, which are mediated by the sympathetic and the parasympathetic nervous systems. The baseline and the amplitude of the photoplethysmographic (PPG) signal also show fluctuations in the same frequencies. In the current study, PPG examinations ...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章

    doi:10.1088/0967-3334/19/1/008

    authors: Nitzan M,Babchenko A,Khanokh B,Landau D

    更新日期:1998-02-01 00:00:00

  • AASM standards of practice compliant validation of actigraphic sleep analysis from SOMNOwatch™ versus polysomnographic sleep diagnostics shows high conformity also among subjects with sleep disordered breathing.

    abstract::In recent AASM practice, parameter actimetry is cited to measure total sleep time in obstructive sleep apnoea patients, when polysomnography is not available. An actigraph was therefore compared to polysomnographic data in 28 subjects with known sleep disordered breathing. Total sleep time (TST), sleep period time (SP...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/31/12/005

    authors: Dick R,Penzel T,Fietze I,Partinen M,Hein H,Schulz J

    更新日期:2010-12-01 00:00:00

  • The impact of electrode area, contact impedance and boundary shape on EIT images.

    abstract::Electrical impedance tomography (EIT) measures the conductivity distribution within an object based on the current applied and voltage measured at surface electrodes. Thus, EIT images are sensitive to electrode properties (i.e. contact impedance, electrode area and boundary shape under the electrode). While some of th...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/32/7/S02

    authors: Boyle A,Adler A

    更新日期:2011-07-01 00:00:00

  • An instrumented timed up and go: the added value of an accelerometer for identifying fall risk in idiopathic fallers.

    abstract::The Timed Up and Go (TUG) test is a widely used measure of mobility and fall risk among older adults that is typically scored using a stopwatch. We tested the hypothesis that a body-fixed accelerometer can enhance the ability of the TUG to identify community-living older adults with a relatively high fall risk of unkn...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/32/12/009

    authors: Weiss A,Herman T,Plotnik M,Brozgol M,Giladi N,Hausdorff JM

    更新日期:2011-12-01 00:00:00

  • Effect of organic and inorganic nitrates on cerebrovascular pulsatile power transmission in patients with heart failure and preserved ejection fraction.

    abstract:OBJECTIVE:Increased penetration of pulsatile power to the brain has been implicated in the pathogenesis of age-related cognitive dysfunction and dementia, a common comorbidity in patients with heart failure and preserved ejection fraction (HFpEF). However, there is a lack of knowledge on the effects of organic and inor...

    journal_title:Physiological measurement

    pub_type: 杂志文章,随机对照试验

    doi:10.1088/1361-6579/aab2ef

    authors: Londono-Hoyos F,Zamani P,Beraun M,Vasim I,Segers P,Chirinos JA

    更新日期:2018-04-20 00:00:00

  • Test-retest reliability and minimal detectable change of repeated sit-to-stand analysis using one body fixed sensor in geriatric patients.

    abstract::A majority of geriatric patients experience difficulty in performing sit-to-stand (SiSt) transitions. A detailed assessment of SiSt ability is a prerequisite for successful rehabilitation. Body fixed sensors (BFSs) are increasingly used to assess functional performances. As to date there is no system which analyzes cl...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/33/11/1931

    authors: Schwenk M,Gogulla S,Englert S,Czempik A,Hauer K

    更新日期:2012-11-01 00:00:00

  • Linear and nonlinear characteristics of heart rate time series in obesity and during weight-reduction surgery.

    abstract::Obesity is associated with abnormal cardiac regulation by the autonomic nervous system (ANS), this being reversed by weight loss. Bariatric (weight-reduction) surgery can induce substantial long-term weight reductions. This study compares the acute influence on ANS control of two different types of bariatric surgery i...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/30/7/002

    authors: Alam I,Lewis MJ,Morgan J,Baxter J

    更新日期:2009-07-01 00:00:00

  • Development of a novel method for assessing balance: the quantitative posturography system.

    abstract::Balance is the ability to maintain equilibrium while sitting or standing. There are a number of different methods which are used to assess balance: technical methods such as sway magnetometry, ataxia meter and force platforms, and clinical methods such as the functional reach test, Berg balance test and fall risk inde...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/21/4/309

    authors: Browne J,O'Hare N

    更新日期:2000-11-01 00:00:00

  • Life-threatening false alarm rejection in ICU: using the rule-based and multi-channel information fusion method.

    abstract::False alarm (FA) rates as high as 86% have been reported in intensive care unit monitors. High FA rates decrease quality of care by slowing staff response times while increasing patient burdens and stresses. In this study, we proposed a rule-based and multi-channel information fusion method for accurately classifying ...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/37/8/1298

    authors: Liu C,Zhao L,Tang H,Li Q,Wei S,Li J

    更新日期:2016-08-01 00:00:00

  • Neuromagnetic field strength outside the human head due to impedance changes from neuronal depolarization.

    abstract::The holy grail of neuroimaging would be to have an imaging system, which could image neuronal electrical activity over milliseconds. One way to do this would be by imaging the impedance changes associated with ion channels opening in neuronal membranes in the brain during activity. In principle, we could measure this ...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/25/1/040

    authors: Ahadzi GM,Liston AD,Bayford RH,Holder DS

    更新日期:2004-02-01 00:00:00

  • An intelligent ventilation and oxygenation management system in neonatal intensive care using fuzzy trend template fitting.

    abstract::This paper describes an open loop feedback intelligent system for neonatal intensive care management. The system provides a tool enabling the user to make the final decision to accept or reject the advice given. The system collects 18 parameters from the bedside monitor and ventilator using a Medical Information Bus (...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/26/4/019

    authors: Belal SY,Taktak AF,Nevill A,Spencer A

    更新日期:2005-08-01 00:00:00

  • A method for comparative evaluation of EIT algorithms using a standard data set.

    abstract::The point spread function (PSF) is the most widely used tool for quantifying the spatial resolution of imaging systems. However, prerequisites for the proper use of this tool are linearity and space invariance. Because EIT is non-linear it is only possible to compare different reconstruction algorithms using a standar...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/16/3a/021

    authors: Ider YZ,Eyüboğlu BM,Kuzuoğlu M,Leblebïcïoğlu K,Baysal U,Cağlar BK,Bïrgül O

    更新日期:1995-08-01 00:00:00

  • Novel technology to help understand the context of physical activity and sedentary behaviour.

    abstract::When used in large, national surveillance programmes, objective measurement tools provide prevalence estimates of low physical activity guideline compliance and high amounts of sedentary time. There are undoubtedly a plethora of reasons for this but one possible contributing factor is the current lack of behavioural c...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/37/10/1834

    authors: Loveday A,Sherar LB,Sanders JP,Sanderson PW,Esliger DW

    更新日期:2016-10-01 00:00:00

  • Wavelet-based real-time calculation of multiple physiological parameters on an embedded platform.

    abstract:OBJECTIVE:This paper aims to present how physiological signals can be processed based on wavelet decomposition to calculate multiple physiological parameters in real-time on an embedded platform. APPROACH:An ECG and PPG are decomposed to the appropriate scale based on a quadratic spline wavelet base in order to obtain...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/1361-6579/ab6f52

    authors: Tang M,Xia P,He Z,Zhao Z,Chen X,Yang T,Zhang Z,Zhan Q,Li X,Fang Z

    更新日期:2020-03-06 00:00:00

  • Pilot acute study of feedback-controlled retrograde peristalsis invoked by neural gastric electrical stimulation.

    abstract::Neural gastric electrical stimulation (NGES) is a new method for invoking gastric contractions under microprocessor control. However, optimization of this technique using feedback mechanisms to minimize power consumption and maximize effectiveness has been lacking. The present pilot study proposes a prototype feedback...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/30/3/006

    authors: Aelen P,Jurkov A,Aulanier A,Mintchev MP

    更新日期:2009-03-01 00:00:00

  • Automatic detection of detached and erroneous electrodes in electrical impedance tomography.

    abstract::One unfortunate occurrence in experimental measurements with electrical impedance tomography is electrodes which become detached or poorly connected, such that the measured data cannot be used. This paper presents an automatic approach to detect such erroneous electrodes. It is based on the assumption that all valid m...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/26/2/017

    authors: Asfaw Y,Adler A

    更新日期:2005-04-01 00:00:00

  • Modelling of the immunoassay element of an optical immunosensor.

    abstract::Several factors affect the viability of biosensor design. A computer-based model is being developed to enable the sources and effect of noise and variability within the sensor to be analysed. The work now presented details the modelling of the biochemical aspect of the biosensor model-the immunoassay. The equilibrium ...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/22/3/318

    authors: Keating SM,Flanagan MT

    更新日期:2001-08-01 00:00:00

  • Static conductivity imaging using variational gradient Bz algorithm in magnetic resonance electrical impedance tomography.

    abstract::A new image reconstruction algorithm is proposed to visualize static conductivity images of a subject in magnetic resonance electrical impedance tomography (MREIT). Injecting electrical current into the subject through surface electrodes, we can measure the induced internal magnetic flux density B = (Bx, By, Bz) using...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/25/1/030

    authors: Park C,Park EJ,Woo EJ,Kwon O,Seo JK

    更新日期:2004-02-01 00:00:00

  • Characterization of the work-time relationship during cross-country ski ergometry.

    abstract::The purpose of this study was to examine the validity and reliability of estimated parameters of the work-time relationship during cross-country ski ergometry using the traditional multi-trial critical power (CP) test and a 3 min 'all-out' test (3MT). Fourteen recreationally active male participants (mean ± SD; age: 2...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/35/1/31

    authors: Fukuda DH,Hetrick RP,Kendall KL,Smith-Ryan AE,Jackson ME,Stout JR

    更新日期:2014-01-01 00:00:00

  • Performance limits of ICA-based heart rate identification techniques in imaging photoplethysmography.

    abstract::Imaging photoplethysmography is a relatively new technique for extracting biometric information from video images of faces. This is useful in non-invasive monitoring of patients including neonates or the aged, with respect to sudden infant death syndrome, sleep apnoea, pulmonary disease, physical or mental stress and ...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/36/1/67

    authors: Mannapperuma K,Holton BD,Lesniewski PJ,Thomas JC

    更新日期:2015-01-01 00:00:00

  • Validation of a finite-element solution for electrical impedance tomography in an anisotropic medium.

    abstract::Electrical impedance tomography is an imaging method, with which volumetric images of conductivity are produced by injecting electrical current and measuring boundary voltages. It has the potential to become a portable non-invasive medical imaging technique. Until now, implementations have neglected anisotropy even th...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/28/7/S10

    authors: Abascal JF,Arridge SR,Lionheart WR,Bayford RH,Holder DS

    更新日期:2007-07-01 00:00:00

  • A planar elliptical model of cardio-vagal hysteresis.

    abstract::The state-dependent portion of cardio-vagal baroreflex control is called baroreflex hyteresis: we observe hysteresis when RR interval and carotid diameter depend on both the direction and value of arterial pressure. The elasticity of arterial walls, as well as the responsiveness of central command reset controls the r...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/31/6/009

    authors: Ler AS,Cohen MA,Taylor JA

    更新日期:2010-06-01 00:00:00

  • Eye-tracker algorithms to detect saccades during static and dynamic tasks: a structured review.

    abstract:OBJECTIVE:Eye-tracking devices have become widely used as clinical assessment tools in a variety of applied-scientific fields to measure saccadic eye movements. With the emergence of multiple static and dynamic devices, the concurrent need for algorithm development and validation is paramount. APPROACH:This review ass...

    journal_title:Physiological measurement

    pub_type: 杂志文章,评审

    doi:10.1088/1361-6579/ab02ab

    authors: Stuart S,Hickey A,Vitorio R,Welman K,Foo S,Keen D,Godfrey A

    更新日期:2019-02-26 00:00:00

  • Treading on the unknown-the feasibility of a novel approach to investigating the motor control of walking.

    abstract:BACKGROUND AND OBJECTIVE:Walking is a complex human behavior, usually performed in a dynamic environment. Gait parameters are thought to reflect this complexity. Re-Step™ is a therapy system in the form of a computerized shoe, originally developed for the training and rehabilitation of individuals with brain damage. Th...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章

    doi:10.1088/1361-6579/aab659

    authors: Koren Y,Raanan Y,Parmet Y,Bar-Haim S

    更新日期:2018-04-26 00:00:00

  • The effect of ambient air temperature on whole-body bioelectrical impedance.

    abstract::It has previously been shown that extreme changes in ambient air temperature can affect whole-body bioelectrical impedance. The purpose of this study was to determine if more moderate changes in ambient air temperature, such as those experienced in most laboratory settings, would also affect bioelectric impedance anal...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/25/1/011

    authors: Buono MJ,Burke S,Endemann S,Graham H,Gressard C,Griswold L,Michalewicz B

    更新日期:2004-02-01 00:00:00

  • In vivo bioimpedance changes during haemorrhagic and ischaemic stroke in rats: towards 3D stroke imaging using electrical impedance tomography.

    abstract::Electrical impedance tomography (EIT) could be used as a portable non-invasive means to image the development of ischaemic stroke or haemorrhage. The purpose of this study was to examine if this was possible using time difference imaging, in the anesthetised rat using 40 spring-loaded scalp electrodes with applied con...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/37/6/765

    authors: Dowrick T,Blochet C,Holder D

    更新日期:2016-06-01 00:00:00

  • The influence of cardiac preload and positive end-expiratory pressure on the pre-ejection period.

    abstract::The pre-ejection period (PEP) has recently been described as a potential parameter for monitoring cardiac preload. This study further investigated the influence of changes in intravascular volume status and the application of positive end-expiratory pressure (PEEP) on the pre-ejection period. In ten pigs, ECG, arteria...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/26/6/012

    authors: Kubitz JC,Kemming GI,Schultheib G,Starke J,Podtschaske A,Goetz AE,Reuter DA

    更新日期:2005-12-01 00:00:00

  • The linearity and reliability of the mechanomyographic amplitude versus submaximal isometric force relationship.

    abstract::The purpose of this study was to investigate the linearity and reliability of the mechanomyographic (MMG) amplitude versus submaximal isometric force relationship for the vastus lateralis. Twenty healthy subjects (mean +/- SD age = 24.0 +/- 4.3 years) volunteered to perform submaximal isometric muscle actions of the d...

    journal_title:Physiological measurement

    pub_type: 杂志文章

    doi:10.1088/0967-3334/30/10/002

    authors: Beck TW,DeFreitas JM,Stock MS

    更新日期:2009-10-01 00:00:00

  • Short-term studies of heart rate variability: comparison of two methods for recording.

    abstract::Heart rate variability (HRV) is often analysed using short-term studies. Our objective was to compare two of them in a group of diabetic patients (reduced HRV) and in a control group. From the same 10 min surface electrocardiogram (ECG) two recordings were obtained. In one of them the whole signal was acquired through...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章

    doi:10.1088/0967-3334/25/6/n01

    authors: Migliaro ER,Canetti R,Contreras P,Hakas M,Eirea G,Machado A

    更新日期:2004-12-01 00:00:00