A semi-implantable multichannel telemetry system for continuous electrical, mechanical and hemodynamical recordings in animal cardiac research.


:We have developed an eight-channel telemetry system for studying experimental models of chronic cardiovascular disease. The system is an extension of a previous device that has been miniaturized, reduced in power consumption and provided with increased functionality. We added sensors for ventricular dimension, and coronary artery blood flow and arterial blood pressure that are suitable for use with the system. The telemetry system consists of a front end, a backpack and a host PC. The front end is a watertight stainless steel case with all sensor electronics sealed inside; it acquires dimension, flow, pressure and five cardiac electrograms from selected locations on the heart. The backpack includes a control unit, Bluetooth radio, and batteries. The control unit digitizes eight channels of data from the front end and forwards them to the host PC via Bluetooth link. The host PC has a receiving Bluetooth radio and Labview programs to store and display data. The whole system was successfully tested on the bench and in an animal model. This telemetry system will greatly enhance the ability to study events leading to spontaneous sudden cardiac arrest.


Physiol Meas


Kong W,Huang J,Rollins DL,Ideker RE,Smith WM




Has Abstract


2007-03-01 00:00:00














  • A comparison of methods for estimating left ventricular volumes from radionuclide ventriculography.

    abstract::An accurate reproducible measurement of left ventricular volume is important in the evaluation of cardiac disease. Four methods of left ventricular volume measurement by radionuclide ventriculography have been compared and their reproducibility assessed in a patient group. The methods studied were a geometric method, ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Thorley PJ,Sheard KL,Rees MR

    更新日期:1993-02-01 00:00:00

  • Network proteomics of human dermal wound healing.

    abstract:OBJECTIVE:The healing of wounds is critical in protecting the human body against environmental factors. The mechanisms involving protein expression during this complex physiological process have not been fully elucidated. APPROACH:Here, we use reverse-phase protein microarrays (RPPA) involving 94 phosphoproteins to st...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Gao X,Petricoin EF 3rd,Ward KR,Goldberg SR,Duane TM,Bonchev D,Arodz T,Diegelmann RF

    更新日期:2018-12-07 00:00:00

  • Real time impedance plots with arbitrary frequency components.

    abstract::Temporal changes in the impedance spectra of bioelectrodes in contact with skin provide useful data for comparisons between differing electrode materials and skin preparation methods. Traditional impedance measuring systems employ swept frequency methods which will distort results in the impedance spectra of a sample ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Searle A,Kirkup L

    更新日期:1999-02-01 00:00:00

  • In vivo measurement of human skin absorption of topically applied substances by a photoacoustic technique.

    abstract::A photoacoustic technique is used for studying topically applied substance absorption in human skin. The proposed method utilizes a double-chamber PA cell. The absorption determination was obtained through the measurement of the thermal effusivity of the binary system substance-skin. The theoretical model assumes that...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Gutiérrez-Juárez G,Vargas-Luna M,Córdova T,Varela JB,Bernal-Alvarado JJ,Sosa M

    更新日期:2002-08-01 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


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

    更新日期:1998-02-01 00:00:00

  • Localization of sources of brain alpha/theta/delta activity and the influence of the mode of spontaneous mentation.

    abstract::A method is described that accounts for multichannel brain field data (EEG) epochs, after transformation into the frequency domain, by a single oscillating dipole source in terms of phase angles. The method produces a potential distribution for each frequency point ('FFT dipole approximation'). These maps can be subje...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Michel CM,Henggeler B,Brandeis D,Lehmann D

    更新日期:1993-11-01 00:00:00

  • A novel curve fitting method for AV optimisation of biventricular pacemakers.

    abstract::In this study, we designed and tested a new algorithm, which we call the 'restricted parabola', to identify the optimum atrioventricular (AV) delay in patients with biventricular pacemakers. This algorithm automatically restricts the hemodynamic data used for curve fitting to the parabolic zone in order to avoid inadv...

    journal_title:Physiological measurement

    pub_type: 杂志文章,随机对照试验


    authors: Dehbi HM,Jones S,Sohaib SM,Finegold JA,Siggers JH,Stegemann B,Whinnett ZI,Francis DP

    更新日期:2015-09-01 00:00:00

  • Early prediction of unexplained syncope by support vector machines.

    abstract::The goal of the present study was to develop and evaluate a new method for the prediction of unexplained syncope occurrences. Diagnosis of syncope is currently based on the reproduction of symptoms in combination with hypotension and bradycardia induced by a 45 min 60-70 degrees head-upright tilt test (HUTT). The main...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Schang D,Feuilloy M,Plantier G,Fortrat JO,Nicolas P

    更新日期:2007-02-01 00:00:00

  • Esophageal temperature monitoring during radiofrequency catheter ablation: experimental study based on an agar phantom model.

    abstract::Although previous studies have established the feasibility of monitoring esophageal temperature during radiofrequency cardiac ablation using an esophageal temperature probe (ETP), some questions remain regarding its efficacy. The aims of this study were to study the effect of the location of the ETP on the temperature...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Rodríguez I,Lequerica JL,Berjano EJ,Herrero M,Hornero F

    更新日期:2007-05-01 00:00:00

  • Obstructive sleep apnea-hypopnea results in significant variations in cerebral hemodynamics detected by diffuse optical spectroscopies.

    abstract::The objective of this study was to adapt a novel near-infrared diffuse correlation spectroscopy (DCS) flow-oximeter for simultaneous and continuous monitoring of relative changes in cerebral blood flow (rCBF) and cerebral oxygenation (i.e. oxygenated/deoxygenated/total hemoglobin concentration: Δ[HbO2]/Δ[Hb]/ΔTHC) dur...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Hou Y,Shang Y,Cheng R,Zhao Y,Qin Y,Kryscio R,Rayapati A,Hayes D,Yu G

    更新日期:2014-10-01 00:00:00

  • Energy scavenging sources for biomedical sensors.

    abstract::Energy scavenging has increasingly become an interesting option for powering electronic devices because of the almost infinite lifetime and the non-dependence on fuels for energy generation. Moreover, the rise of wireless technologies promises new applications in medical monitoring systems, but these still face limita...

    journal_title:Physiological measurement

    pub_type: 杂志文章,评审


    authors: Romero E,Warrington RO,Neuman MR

    更新日期:2009-09-01 00:00:00

  • Effects of CO2 on dynamic cerebral autoregulation measurement.

    abstract::Arterial pCO2 is known to influence cerebral autoregulation but its effect on the dynamic relationship between mean arterial blood pressure (ABP) and mean cerebral blood flow velocity (CBFV), obtained from spontaneous fluctuations in ABP, has not been established. In 16 normal subjects, ABP was measured non-invasively...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Panerai RB,Deverson ST,Mahony P,Hayes P,Evans DH

    更新日期:1999-08-01 00:00:00

  • Feasibility of long-term cerebral and peripheral regional tissue oxygen saturation measurements.

    abstract::The aim of this study was to analyse the feasibility of long-term measurements of cerebral (crSO2) and peripheral (prSO2) regional tissue oxygen saturation on the first day of life by determining the amount of artefacts and their influence on rSO2. Near infrared spectroscopy (NIRS) measurements were performed fronto-p...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Schmitz J,Pichler G,Schwaberger B,Urlesberger B,Baik N,Binder C

    更新日期:2014-07-01 00:00:00

  • Continuous estimates of dynamic cerebral autoregulation: influence of non-invasive arterial blood pressure measurements.

    abstract::Temporal variability of parameters which describe dynamic cerebral autoregulation (CA), usually quantified by the short-term relationship between arterial blood pressure (BP) and cerebral blood flow velocity (CBFV), could result from continuous adjustments in physiological regulatory mechanisms or could be the result ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Panerai RB,Sammons EL,Smith SM,Rathbone WE,Bentley S,Potter JF,Samani NJ

    更新日期:2008-04-01 00:00:00

  • Assessment of cerebrospinal fluid outflow conductance using constant-pressure infusion--a method with real time estimation of reliability.

    abstract::The outflow conductance (C(out)) of the cerebrospinal fluid (CSF) system is a parameter considered to be predictive in selection for hydrocephalus surgery. C(out) can be determined through an infusion test. A new apparatus for performing infusion tests in a standardized and automated way was developed. The objective w...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Andersson N,Malm J,Bäcklund T,Eklund A

    更新日期:2005-12-01 00:00:00

  • Carotid flow rates and flow division at the bifurcation in healthy volunteers.

    abstract::In nine healthy subjects, magnetic resonance imaging was used to measure blood flow waveforms in the common (CCA), internal (ICA) and external (ECA) carotid arteries. Useful data were acquired from 14 carotid arteries in total. Flow rates were determined from regions of interest placed over the arteries in CINE-phase ...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Marshall I,Papathanasopoulou P,Wartolowska K

    更新日期:2004-06-01 00:00:00

  • Comprehensive analysis of cardiac health using heart rate signals.

    abstract::The electrocardiogram is a representative signal containing information about the condition of the heart. The shape and size of the P-QRS-T wave, the time intervals between its various peaks, etc may contain useful information about the nature of disease affecting the heart. However, the human observer cannot directly...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Acharya U R,Kannathal N,Krishnan SM

    更新日期:2004-10-01 00:00:00

  • Electrical impedance myography at frequencies up to 2 MHz.

    abstract::Extension of the frequency range of electrical impedance myography (EIM) to 2 MHz discloses a major rise in the reactance of muscle above 3-500 kHz, together with a slow decrease in the resistance consonant with the Kramers-Kronig relations. This 'upturn' phenomenon is found when the distant current electrode configur...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Shiffman CA,Kashuri H,Aaron R

    更新日期:2008-06-01 00:00:00

  • Trabecular thickness measurement in cancellous bones: postmortem rat studies with the zoom-in micro-tomography technique.

    abstract::Using the cross-sectional images taken with the zoom-in micro-tomography technique, we measured trabecular thicknesses of femur bones in postmortem rats. Since the zoom-in micro-tomography technique is capable of high resolution imaging of a small local region inside a large subject, we were able to measure the trabec...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Cho MH,Chun IK,Lee SC,Cho MH,Lee SY

    更新日期:2005-10-01 00:00:00

  • Simultaneous measurement of force and respiratory profiles during chest physiotherapy in ventilated children.

    abstract::There are currently no objective means of quantifying chest wall vibrations during manual physiotherapy. The aims of the study were to (i) develop a method to quantify physiotherapy-applied forces and simultaneous changes in respiratory flow and pressure, (ii) assess the feasibility of using this method in ventilated ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Gregson RK,Stocks J,Petley GW,Shannon H,Warner JO,Jagannathan R,Main E

    更新日期:2007-09-01 00:00:00

  • The possible role of the vagal nervous system in the recovery of the blood pressure control after cardiac arrest: a porcine model study.

    abstract::Previous studies have proved that the baroreceptor reflex (baroreflex) control of heart rate can be used for stratification of post-infarction population and, in general, cardiovascular disease populations. Many methods have been proposed to estimate the so-called baroreflex sensitivity (BRS) expressed as ms mmhg-1. M...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Lavanga M,Baselli G,Fumagalli F,Ristagno G,Ferrario M

    更新日期:2017-01-01 00:00:00

  • Monitoring fetal maturation-objectives, techniques and indices of autonomic function.

    abstract::Monitoring the fetal behavior does not only have implications for acute care but also for identifying developmental disturbances that burden the entire later life. The concept, of 'fetal programming', also known as 'developmental origins of adult disease hypothesis', e.g. applies for cardiovascular, metabolic, hyperki...

    journal_title:Physiological measurement

    pub_type: 杂志文章,评审


    authors: Hoyer D,Żebrowski J,Cysarz D,Gonçalves H,Pytlik A,Amorim-Costa C,Bernardes J,Ayres-de-Campos D,Witte OW,Schleußner E,Stroux L,Redman C,Georgieva A,Payne S,Clifford G,Signorini MG,Magenes G,Andreotti F,Malberg H,Zaun

    更新日期:2017-05-01 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


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

    更新日期:2014-01-01 00:00:00

  • Are ejection fractions from gated SPECT perfusion studies clinically useful? A comparison with radionuclide ventriculography.

    abstract::Gated SPECT (GSPECT) was evaluated for the measurement of left ventricular ejection fraction (LVEF) by comparing with equilibrium gated radionuclide ventriculography (RNVG). A total of 99 subjects underwent GSPECT and RNVG imaging. All studies were acquired in list mode with GSPECT studies processed to give 16- and 8-...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Wright GA,McDade M,Keeble W,Martin W,Hutton I

    更新日期:2001-05-01 00:00:00

  • Restoration of the electrocardiogram during mechanical cardiopulmonary resuscitation.

    abstract:OBJECTIVE:An artefact-free electrocardiogram (ECG) is essential during cardiac arrest to decide therapy such as defibrillation. Mechanical cardiopulmonary resuscitation (CPR) devices cause movement artefacts that alter the ECG. This study analyzes the effectiveness of mechanical CPR artefact suppression filters to rest...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Isasi I,Irusta U,Aramendi E,Idris AH,Sörnmo L

    更新日期:2020-11-06 00:00:00

  • Auditory magnetic fields in cochlear-implant patients.

    abstract::Neuromagnetic recordings were used to check if electrical stimulation of the auditory nerve in cochlear-implant patients activates cortical auditory areas in a similar manner as acoustic stimulation in normal hearing subjects or whether the excitation processes are different. The waveform of the evoked magnetic field ...

    journal_title:Physiological measurement

    pub_type: 杂志文章,评审


    authors: Pelizzone M

    更新日期:1993-11-01 00:00:00

  • Comparison of four different FIM configurations--a simulation study.

    abstract::Focused impedance measurements (FIM) are used in several fields, and address the problem of measuring the volume impedance of an object within a volume conductor. Several electrode configurations are possible, and these have different properties. Sensitivity fields of four configurations have been investigated. We pre...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Pettersen FJ,Ferdous H,Kalvøy H,Martinsen ØG,Høgetveit JO

    更新日期:2014-06-01 00:00:00

  • Comparison of EPR oximetry and Eppendorf polarographic electrode assessments of rat brain PtO2.

    abstract::EPR oximetry is a promising, relatively non-invasive method for monitoring the partial pressure of oxygen in tissue (PtO2) that has proved useful in following changes under various physiologic and pathophysiologic conditions. Optimal utilization of the method will be facilitated by systematic comparisons with other av...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: O'Hara JA,Khan N,Hou H,Wilmo CM,Demidenko E,Dunn JF,Swartz HM

    更新日期:2004-12-01 00:00:00

  • Determination of Cole parameters in multiple frequency bioelectrical impedance analysis using only the measurement of impedances.

    abstract::Conventional bioimpedance spectrometers measure resistance and reactance over a range of frequencies and, by application of a mathematical model for an equivalent circuit (the Cole model), estimate resistance at zero and infinite frequencies. Fitting of the experimental data to the model is accomplished by iterative, ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Ward LC,Essex T,Cornish BH

    更新日期:2006-09-01 00:00:00

  • The non-invasive and continuous estimation of cardiac output using a photoplethysmogram and electrocardiogram during incremental exercise.

    abstract::Cardiac output (CO) monitoring is not only essential for critically ill patients in the hospital, but also for patients at home and those undergoing cardiopulmonary exercise testing. However, CO is difficult to monitor during daily activities and exercise. In this paper, we aim at developing a novel CO estimation meth...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Wang L,Poon CC,Zhang YT

    更新日期:2010-05-01 00:00:00