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Training Opportunities

Training Opportunities

Occaisionally, Mindware Technologies, LTD. holds seminars for training and demonstrations of our products. This is the information regarding those training and demonstration times. For more information, please contact us at by phone at (765) 423-1505 or email at info@mindwaretech.com.



HRV Science Training Seminar sponsored by Mindware, June 2008

Impedance Cardiography Training Seminar sponsored by Mindware, Sept. 2008




HRV Science Training Seminar sponsored by Mindware, June 2008

Date: June 21 - 22, 2008

Location: Hilton Columbus at Easton, Columbus, OH

Registration contact:  susanberntson@columbus.rr.com

 

Please click here to download the registration form. Complete the form & mail with seminar registration fee to the address listed on the form. (Adobe Acrobat Reader is necessary to read the PDF Format. Download it from Adobe.com)

 

Session Outline:

HRV Science and Technology Session

I. Introduction- Historical Overview
1)      What is HRV and why is it of interest
2)      What is RSA (HF) and why is it of interest
 
II. Origins and Mechanisms of HRV
1)      What are the physiological mechanisms of HRV
a.       Physiological (nonautonomic) contributions
b.      Autonomic contributions
c.       Hormonal and other contributions
2)      Which of these are important in RSA?
a.       Sources of respiratory modulation
b.      Kinetcis of sympathetic and parasympathetic sinoatrial innervation
3)      What about non-respiratory frequencies (ultra-low, very low, and low frequency
 
III. Quantification of HRV
1)        Time domain vs. frequency domain approaches to measurement
2)        Signal Processing considerations
3)        Time domain measures, Peak Valley, Moving Polynomial
4)        Frequency Domain approaches
a.       Methodological considerations with time series statistics
b.      Sample rate – Nyquist Frequency and aliasing
c.       Epoch length – Stationarity
d.      Fourier Theorem and FFT
e.       Autoregressive (AR) methods
f.       Other approaches
 
IV. Significance and Interpretation of HRV
1)        HF HR variability
2)        LF, VLF, ULF HR variability          
3)        HF/LF ratio
4)        Polyvagal Theory
5)        Autonomic flexibility
6)        Psychosomatic considerations
 
V. New perspectives and applications
 
 
HRV Practicum & Applications Session
 
I,   Signal Acquisition
1) ECG
      a. Origins
      b. Einthoven’s triangle
      c. Leads and electrode considerations in monitoring
      d. Recording considerations, amplification, filters, etc
2) Other approaches and limitations
a.       Acoustic or optical approaches
b.      Echo, etc
 
II. Signal Processing
1) Sample rate revisited—aliasing
2) Stationarity revisited
1)      testing for stationarity
2)      dealing with non stationarites
      3) Selection of epoch lengths
      4) Artifacts and artifact processing
             a. missing beats, spurious beats
                   b. abnormal rhythms—considerations for HRV analyses
                   c. Correcting versus interpolation
 
III. Sample analysis
1)      Typical FFT analysis
d. Generation of a time series—and how not to!
e.        Detrending
f.        Tapering
g.      FFT analysis
2)      Results of FFT
a. FFT plots
b   Integration – frequency bands
c    Reals and imaginaries—digital filtering
d.      Reverse FFT
3)      Analyzing the FFT
a.       Basic Data- Frequency bands and scientific question
b.      Epoch length & aggregation across epochs
c.       Analysis of variance (covariates)
d.      Regression approaches
 
IV.Interpretive Issues
1)      Respiratory confounds
a.       Amplitude and frequency variations
b.      Bandwidth boundaries and frequency artifacts
c.       RSA-frequency functions
2)      Significance of HRV components
3)      Parasympathetic (Vagal) tone – what is it
4)      Respiratory Sinus arrhythmia vs. vagal tone
5)      Assessing Sympathetic/parasympathetic balance
6)      Reliability
7)      Validity & Gold Standard

 

Impedance Cardiography Training Seminar sponsored by Mindware, Sept. 2008

Date: September 13 -14, 2008

Location: Hilton Columbus at Easton, Columbus, OH


Registration contact:  susanberntson@columbus.rr.com

 

Please click here to download the registration form. Complete the form & mail with seminar registration fee to the address listed on the form. (Adobe Acrobat Reader is necessary to read the PDF Format. Download it from Adobe.com)

 

Session Outline:

Science of Impedance Cardiography

I. Introduction- Historical Overview
1) Approaches to measuring cardiovascular function
2) Noninvasive methods (phono-, echo-, and impedance cardiography)
3) Why should I care about cardiovascular function?
 
II.  The Cardiovascular System
1)      Heart – electrical and mechanical events in the cardiac cycle
2)      Vasculature
3)      Circulation & Regulation
4)      Autonomic Control
 
III. Quantifying Cardiovascular Function
1)        ECG- Origins/Einthoven’s triangle
2)        Heart Rate & Systolic Time Intervals (chronotropic and dromotropic functions)   
3)        Volumetric Measures (stroke volume & Cardiac output—inotropic measures)
 
IV. Impedance Cardiography
1)      Bioelectric Basis of Impedance Cardiography
a.       What is impedance, anyway?
b.      Rationale (ohms law and resistive and capacitive components)
c.       Thoracic Impedance Z(t) = Zo + Zr(t) + Zh(t)
d.      Thoracic impedance changes in the cardiac cycle
2)      Thoracic Impedance Signals and Cardiac Estimates
a.       Zo, dZ/dt
b.      dZ/dt(max) (min), the B point and the X point
c.       Systolic Time intervals (X point & B point)
                                                              i.      Pre-Ejection Period (PEP)
                                                            ii.      Left Ventricular Ejection Time (LVET)
d.      Volumetric measures
                                                              i.      Stroke Volume (Kubicek equation) SV = rhob (L/Zo)2 · LVET · dZ/dt(max)
                              ii.   Cardiac output  (SV · HR)
3)      Validity
 
V. Impedance Methodology
1)      Electrodes: Bands vs. Spots
2)      Impedance Devices
3)      Scoring
a.       dZ/dt(max)
b.      Time to dZ/dt(max) T(max)
c.       B-point
                              i.   incisura (notch)
                                                              i.      inflection points, derivates, etc
          iii.   Lozano equation: B = .53T(max) + 2.65 (tentative)
d.      X-point
e.       Starting Point: S vs. R (PEP vs. PEPr)
4)        Ensemble Averaging
 
VI. Significance and Interpretation of Impedance Measures
1)        Metrics of sympathetic cardiac control: myocardial contractility
a.       PEP/PEPr
                                                              i.      Caveats: preload and afterload
                                                            ii.      Caveats: blood pressure
      b.   Heather index, others
2)        Volumetric measures
a.       Stroke Volume (SV) / Cardiac Output (CO)
b.      Total Peripheral Resistance (TPR = 80 · MAP/CO )
3)        Cardiovascular dynamics and patterns
 
VII. New perspectives and applications
 

 

Impedance Practicum & Applications Session

 
I.   Signal Acqusition
1) Electrodes and their attachments
      a. Impedance electrodes
      b. ECG electrodes
2) The impedance Cardiograph
3) Posture
4) Zo (basal impedance)
5) Recording signals (sample rate, resolution, Nyquist frequency)
 
II. Signal Processing
1) Signal waveforms and cursors
2) Artifact processing
5)      Locating dZ/dt(max) (min)
6)      Locating T(max) – plateaus
5)   Locating the B point
      6)   Locating the X point
           
III. Sample analysis
1)      Deriving Systolic Time Intervals (PEP/PEPr; LVET)
2)      Deriving Volumetric Metrics (SV; CO; TPR)
3)      Other metrics: Heather index, etc
 
 

 

 

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