Effects of PEEP on the relationship between tidal volume and total impedance change measured via electrical impedance tomography (EIT).

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. The aim of this study was to determine the effect of PEEP on VT estimation, using EIT technology and spirometry, and observe the stability of the relationship under changing lung conditions. Twelve male castrated cattle (Steer), mean age 7.8 months (SD ± 1.7) were premedicated with xylazine followed by anaesthesia induction with ketamine and maintenance with halothane in oxygen via an endotracheal tube. An EIT belt was applied around the thorax at the level of the fifth intercostal space. Volume controlled ventilation was used. PEEP was increased in a stepwise manner from 0 to 5, 10 and 15 cmH2O. At each PEEP, the VT was increased stepwise from 5 to 10 and 15 mL kg-1. After a minute of stabilisation, total impedance change (VTEIT), using EIT and VT measured by a spirometer connected to a flow-partitioning device (VTSpiro) was recorded for the following minute before changing ventilator settings. Data was analysed using linear regression and multi variable analysis. There was a linear relationship between VTEIT and VTSpiro at all levels of PEEP with an R2 of 0.71, 0.68, 0.63 and 0.63 at 0, 5, 10 and 15 cmH2O, respectively. The variance in VTEIT was best described by peak inspiratory pressure (PIP) and PEEP (adjusted R2 0.82) while variance in VTSpiro was best described by PIP and airway deadspace (adjusted R2 0.76). The relationship between VTEIT and VTSpiro remains linear with changes in tidal volume, and stable across altered lung conditions. This may have application for monitoring and assessment in vivo.

journal_name

J Clin Monit Comput

authors

Brabant O,Crivellari B,Hosgood G,Raisis A,Waldmann AD,Auer U,Adler A,Smart L,Laurence M,Mosing M

doi

10.1007/s10877-021-00651-x

subject

Has Abstract

pub_date

2021-01-25 00:00:00

eissn

1387-1307

issn

1573-2614

pii

10.1007/s10877-021-00651-x

pub_type

杂志文章
  • Accuracy and trending ability of hemoglobin measurement by the Pulse CO-Oximeter during vascular surgery.

    abstract::Real time information of Hb concentration can guide a tailored patient blood management. The study investigates the accuracy, precision and trending ability of the Pulse CO-Oximeter (SpHb) and blood gas analyzer in measuring the Hb concentration, compared to hematological analysis, in surgery at high risk of hemorrhag...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-019-00337-5

    authors: De Rosa RC,Romano GM,Abbate R,Corcione A,De Robertis E

    更新日期:2020-06-01 00:00:00

  • Head eye co-ordination using simultaneous measurement of eye in head and head in space movements: potential for use in subjects with a whiplash injury.

    abstract:OBJECTIVE:Describe reproducibility of a measurement method to investigate deficits in eye-head co-ordination. METHODS:Combined recordings of head and eye rotation using wireless motion sensors and electro-oculography (EOG) were used as an initial step towards a method to quantify eye-head co-ordination deficits. Head ...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-009-9160-5

    authors: Grip H,Jull G,Treleaven J

    更新日期:2009-02-01 00:00:00

  • Selection of cuffed endotracheal tube for children with congenital heart disease based on an ultrasound-based linear regression formula.

    abstract::It remains to be discovered whether a formula predicting the subglottic transverse diameter measured by ultrasound (SGDformula) for the selection of an appropriate endotracheal tube (ETT) for children without congenital heart disease (CHD) is useful for children with CHD. A formula for predicting SGD was established a...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-018-0203-7

    authors: Zhang K,Ma RJ,Zheng JJ,Chen YQ,Zhang MZ

    更新日期:2019-08-01 00:00:00

  • Diagnosis of anesthetic-induced upper airway obstruction in children using respiratory inductance plethysmography.

    abstract:OBJECTIVE:Upper airway obstruction is the most rapid and clinically relevant cause of hypoxia during sedation and anesthesia. This study was designed to determine if respiratory inductance plethysmography (RIP) could quantify the degree of upper airway obstruction caused by induction of general anesthesia. METHODS:RIP...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1023/a:1021246119194

    authors: Litman RS,Kottra JA,Gallagher PR,Ward DS

    更新日期:2002-07-01 00:00:00

  • Assessment of the benefits of head-up preoxygenation using near-infrared spectroscopy with pulse oximetry in a swine model.

    abstract::Compared with supine positioning, head-up positioning improves preoxygenation and prolongs the time to oxygen desaturation. We reevaluated benefits of head-up positioning using near-infrared spectroscopy (NIRS) with pulse oximetry in a pig model. Six pigs (mean ± SD weight: 25.3 ± 0.6 kg) were anesthetized with isoflu...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-019-00456-z

    authors: Kurita T,Kawashima S,Morita K,Nakajima Y

    更新日期:2020-01-02 00:00:00

  • Cutaneous microcirculation in preterm neonates: comparison between sidestream dark field (SDF) and incident dark field (IDF) imaging.

    abstract::Incident dark field imaging (IDF) is a new generation handheld microscope for bedside visualization and quantification of microcirculatory alterations. IDF is the technical successor of sidestream dark field imaging (SDF), currently the most used device for microcirculatory measurements. In (pre)term neonates the redu...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-015-9708-5

    authors: van Elteren HA,Ince C,Tibboel D,Reiss IK,de Jonge RC

    更新日期:2015-10-01 00:00:00

  • Analysis of central venous pressure (CVP) signals using mathematical methods.

    abstract::Central venous pressure (CVP) is an important clinical parameter for physicians but only the absolute CVP value is typically monitored in the intensive care unit (ICU). In this study, we propose a novel mathematical method to present and analyze CVP signals. A total of 44 suitable samples were chosen from a total of 6...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-016-9882-0

    authors: Atefvahid P,Hassani K,Jafarian K,Doyle DJ,Ahmadi H

    更新日期:2017-06-01 00:00:00

  • A motor evoked potential trending system may discriminate outcome: retrospective application with three cases.

    abstract::This report presents a method for tracking Motor Evoked Potential (MEP) amplitudes over the course of a case using a moving least squares linear regression (LSMAs). During a case, newly obtained MEP amplitudes are compared to those predicted by a just previous linear regression (least squares moving average or LSMA). ...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-018-0181-9

    authors: Jasiukaitis P,Lyon R

    更新日期:2019-06-01 00:00:00

  • Bio-electrical impedance analysis for perioperative fluid evaluation in open major abdominal surgery.

    abstract::Water retention and intercompartmental redistribution occur frequently in association with adverse postoperative outcomes, yet the available strategies for non-invasive assessment are limited. One such approach for evaluating body water composition in various circumstances is bio-electrical impedance analysis (BIA). T...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-019-00334-8

    authors: Ciumanghel AI,Grigoras I,Siriopol D,Blaj M,Rusu DM,Grigorasi GR,Igna AR,Duca O,Siriopol I,Covic A

    更新日期:2020-06-01 00:00:00

  • Sympatho-vagal balance, as quantified by ANSindex, predicts post spinal hypotension and vasopressor requirement in parturients undergoing lower segmental cesarean section: a single blinded prospective observational study.

    abstract::Hypotension subsequent to spinal anesthesia occurs in a significant number of parturients undergoing lower segment caesarian section. Currently available methods to predict the incidence of hypotension, its severity and the outcome are sub-optimal. Many workers have used basal heart rate as one of the predictors. But ...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-016-9906-9

    authors: Prashanth A,Chakravarthy M,George A,Mayur R,Hosur R,Pargaonkar S

    更新日期:2017-08-01 00:00:00

  • Technologies and solutions for data display in the operating room.

    abstract::Recent advances in technology have led to the introduction of a variety of innovative devices, each with their own platform for data display, into the operating room (OR). While these innovative applications are expanding the traditional boundaries of the surgical space and enhancing treatment capabilities, the introd...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-006-9017-0

    authors: Bitterman N

    更新日期:2006-06-01 00:00:00

  • A mathematical model for predicting intracranial pressure based on noninvasively acquired PC-MRI parameters in communicating hydrocephalus.

    abstract::To develop and validate a mathematical model for predicting intracranial pressure (ICP) noninvasively using phase-contrast cine MRI (PC-MRI). We performed a retrospective analysis of PC-MRI from patients with communicating hydrocephalus (n = 138). The patients were recruited from Shenzhen Second People's Hospital betw...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-020-00598-5

    authors: Long J,Sun D,Zhou X,Huang X,Hu J,Xia J,Yang G

    更新日期:2020-10-01 00:00:00

  • Trans-ocular brain impedance index for assessment of cerebral autoregulation in a porcine model of cerebral hemodynamic perturbation.

    abstract::Cerebrovascular autoregulation (CA) is often impaired following traumatic brain injury. Established technologies and metrics used to assess CA are invasive and conducive for measurement, but not for continuous monitoring. We developed a trans-ocular brain impedance (TOBI) method that may provide non-invasive and conti...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-020-00556-1

    authors: Tiba MH,McCracken BM,Leander DC,Colmenero CI,Cummings BC,Greer NL,Picton P,Williamson CA,Ward KR

    更新日期:2020-07-14 00:00:00

  • GNARE: automated system for high-throughput genome analysis with grid computational backend.

    abstract::Recent progress in genomics and experimental biology has brought exponential growth of the biological information available for computational analysis in public genomics databases. However, applying the potentially enormous scientific value of this information to the understanding of biological systems requires comput...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-005-3463-y

    authors: Sulakhe D,Rodriguez A,D'Souza M,Wilde M,Nefedova V,Foster I,Maltsev N

    更新日期:2005-10-01 00:00:00

  • Validation of an automated system for detecting ineffective triggering asynchronies during mechanical ventilation: a retrospective study.

    abstract::We compare the sensitivity and specificity of clinician visual waveform analysis against an automated system's waveform analysis in detecting ineffective triggering in mechanically ventilated intensive care unit patients when compared against a reference label set based upon analysis of respiratory muscle activity. El...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-019-00442-5

    authors: Phan TS,Costa R,Haddad WM,Mullis JC,Price LT,Cason AD,Bailey JM,Gholami B

    更新日期:2020-12-01 00:00:00

  • Effects of anesthetics on microvascular reactivity measured by vascular occlusion tests during off-pump coronary artery bypass surgery: a randomized controlled trial.

    abstract::Microvascular function may be modulated by various anesthetics. Desflurane and propofol anesthesia have different effects on microvascular function. However, there are few reports on the effects of sevoflurane and desflurane on microvascular function during cardiac surgery. We compared the effects of sevoflurane and d...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-020-00587-8

    authors: Cho YJ,Yoo SJ,Nam K,Bae JY,Lee SH,Jeon Y

    更新日期:2020-09-11 00:00:00

  • The influence of basic ventilation strategies on cerebral oxygenation in anesthetized patients without vascular disease.

    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

    authors: Picton P,Shanks A,Dorje P,Mashour GA

    更新日期:2010-12-01 00:00:00

  • Capnography to check the safety of Bain circuit.

    abstract::The test of the inner tube integrity is an important checklist prior to the safe use of Bain's breathing system. This is because the major concern with the use of Bain's circuit is the potential malfunctioning of the circuit due to avulsion of the inner fresh gas delivery tube at the machine end which will turn the ou...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-009-9212-x

    authors: Kataria S,Subramanyam R

    更新日期:2010-02-01 00:00:00

  • Prediction of difficult laryngoscopy using spirometry: a pilot study.

    abstract::Prediction of difficult laryngoscopy is still the uncovered secret of anesthetic practice. This pilot study is aimed to assess the efficacy of spirometry measurements in predicting difficult laryngoscopy compared with conventional airway assessment techniques. We enrolled 202 adults, ages 18-40 years, with an American...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-016-9961-2

    authors: Dogru S,Karaman T,Sahin A,Tapar H,Karaman S,Arici S,Suren M,Kaya Z,Somuk BT

    更新日期:2017-12-01 00:00:00

  • Leakage of sevoflurane from vaporizer detected by air monitoring system: a case report.

    abstract::Leakage of inhalational anesthetic gases is an important issue not only to staff health but awareness during general anesthesia. After inhalation of sevoflurane commenced, the audible and visible alarm of our custom-made air monitoring system was activated. The system measured 2-4 ppm of sevoflurane. A thorough search...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-013-9479-9

    authors: Tanaka M,Yamaura K,Higashi M,Hoka S

    更新日期:2013-12-01 00:00:00

  • Ephedrine and phenylephrine induce opposite changes in cerebral and paraspinal tissue oxygen saturation, measured with near-infrared spectroscopy: a randomized controlled trial.

    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

    authors: Vanpeteghem CM,Bruneel BY,Lecoutere IM,De Hert SG,Moerman AT

    更新日期:2020-04-01 00:00:00

  • Comparison of the use of AnaConDa® versus AnaConDa-S® during the post-operative period of cardiac surgery under standard conditions of practice.

    abstract::Changes have been made to the AnaConDa device (Sedana Medical, Stockholm, Sweden), decreasing its size to reduce dead space and carbon dioxide (CO2) retention. However, this also involves a decrease in the surface area of the activated carbon filter. The CO2 elimination and sevoflurane (SEV) reflection of the old devi...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-019-00285-0

    authors: Marcos-Vidal JM,Merino M,González R,García C,Rey S,Pérez I

    更新日期:2020-02-01 00:00:00

  • A comparison of graphical and textual presentations of time series data to support medical decision making in the neonatal intensive care unit.

    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

    authors: Law AS,Freer Y,Hunter J,Logie RH,McIntosh N,Quinn J

    更新日期:2005-06-01 00:00:00

  • Predictive data mining on monitoring data from the intensive care unit.

    abstract::The widespread implementation of computerized medical files in intensive care units (ICUs) over recent years has made available large databases of clinical data for the purpose of developing clinical prediction models. The typical intensive care unit has several information sources from which data is electronically co...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-012-9416-3

    authors: Güiza F,Van Eyck J,Meyfroidt G

    更新日期:2013-08-01 00:00:00

  • Validation of a mathematical model for understanding intracranial pressure curve morphology.

    abstract::The physiology underlying the intracranial pressure (ICP) curve morphology is not fully understood. Recent research has suggested that the morphology could be dependent on arterial cerebral inflow and the physiological and pathophysiological properties of the intracranial cavity. If understood, the ICP curve could pro...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-019-00342-8

    authors: Unnerbäck M,Ottesen JT,Reinstrup P

    更新日期:2020-06-01 00:00:00

  • Correlation between preoperative somatosensory evoked potentials and intraoperative neurophysiological monitoring in spinal cord tumors.

    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

    authors: Park J,Cho YE,Park M,Lee J,Kim D,Park YG

    更新日期:2020-09-29 00:00:00

  • Towards an optimal paradigm for intraoperative auditory nerve monitoring with auditory steady state responses.

    abstract::Auditory steady state responses (ASSR) may offer an alternative to brainstem auditory evoked potentials for monitoring of the auditory nerve during surgical procedures. In the current study, we evaluated the influence of noise on ASSR characteristics in total intravenous anesthesia (TIVA). Simulated ASSR in real noise...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-016-9837-5

    authors: Rampp S,Rensch L,Simmermacher S,Rahne T,Strauss C,Prell J

    更新日期:2017-02-01 00:00:00

  • Transoesophageal Doppler monitoring for fluid and hemodynamic treatment during lung surgery.

    abstract:INTRODUCTION:Patients undergoing lung resection are vulnerable to fluid overhydration. Recently, goal-directed fluid therapy using transoesophageal Doppler monitoring (TDM) has been shown to improve postoperative clinical outcome. The aim of this study was to assess the feasibility of TDM during open-chest procedures f...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-008-9144-x

    authors: Diaper J,Ellenberger C,Villiger Y,Robert J,Tschopp JM,Licker M

    更新日期:2008-10-01 00:00:00

  • Effects of prolonged ischemia on human skeletal muscle microcirculation as assessed by near-infrared spectroscopy.

    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

    authors: Tujjar O,De Gaudio AR,Tofani L,Di Filippo A

    更新日期:2017-06-01 00:00:00

  • The pressure exerted on the tongue during intubation with simultaneous cervical spine immobilisation: a comparison between four videolaryngoscopes and the Macintosh laryngoscope-a manikin study.

    abstract::Excessive pressures exerted on the tongue during intubation may be associated with serious complications and may make intubation more difficult. The aim of this study was to evaluate five different intubating devices in the hands of experienced anaesthetists during simulated conditions of reduced cervical spine mobili...

    journal_title:Journal of clinical monitoring and computing

    pub_type: 杂志文章

    doi:10.1007/s10877-017-0095-y

    authors: Aleksandrowicz D,Gaszyński T

    更新日期:2018-10-01 00:00:00