HRV - CV and Autonomic nervous system

CARDIOCLOUD – HEART RATE VARIABILITY (HRV) – Optimizing Clinical Performance

A good quality HRV device provides information about your adaptability and the true state of cardiovascular health.

The breakdown of your “systems” can take years to develop. UNFORTUNATELY, our current Healthcare System is not looking for early signs of problems but rather surveying for the presence of disease, and then priding itself on the quality of managing your disease.

    “Your brain is the motherboard that controls everything!  Evaluating the messages your brain is sending to your cardiovascular system is the best way to detect problems LONG BEFORE your heart is actually affected.”  ~ Dr. Lisbeth Roy

    A good quality HRV device provides information about your adaptability and true state of cardiovascular health.

    The breakdown of your “systems” can take years to develop.  UNFORTUNATELY, our current Healthcare System is not looking for early signs of problems but rather surveying for the presence of disease, and then priding itself on the quality of managing your disease.  Isn’t that CRAZY to you?  Why would you wait until disease sets in and then manage it?

    Honestly, you wouldn’t just wait to change the oil in your car until your engine is smoking, would you?

    OK… maybe you would.  It doesn’t make any sense to me but lots of people are doing it.  If you do… well, good luck!  The disease management system we call healthcare is NOT WORKING for millions of Americans.  Evaluation, making adjustments to early signs of potential problems, and learning how to build resistance is the only REAL-TRIED-AND-TRUE Wellness.

    The Studio team puts the HEALTH back in Healthcare!

    The Studio Team uses the HRV and other devices to evaluate your body systems in order to know what and where there may be breakdowns that can be “fixed” or supported in favor of achieving your goals.  You see, if you find problems early, usually just a bit of fine-tuning of lifestyle, diet, exercise, or supplements is needed.  By the time you need medication, there is significant damage that is harder to reverse.  HRV is a sensitive tool that tells us if we are headed for health or disease.  YOU ARE IN CONTROL of your health and wellness.  With the “right” information, you make gentle corrections to avoid trouble and to live your BEST LIFE!

    1. The Heart Rate or Beats per Minute is displayed using a graph and numerical value that will change during the course of the three-minute test.
    2. Plethysmograph (PTG): The “basic” waveform signal that indicates pulsation of the chest wall and great arteries followed by the heartbeat. This shows the device picking up the pulse wave from your heartbeat through your fingertip in real-time.
    3. Accelerated Plethysmography (APG): The “final analysis” waveform. The APG measures the blood circulation state and aging level of blood vessels.
    4. HRV (Heart Rate Variability) Tachogram: A green linear record displaying the HRV information collected during a three-minute period of time (indicated by the pink bar).
    5. HR (Heart Rate) Variability: A graphical representation of heartbeats. The more they are dispersed and spread out in a group, the more adaptable your cardiovascular system.

    HRV

    HRV is used to measures the degree of fluctuation in the length of intervals between heartbeats.

    For healthy people, HRV shows a fluctuation in heart rate while unhealthy people have a simple and consistent heart rate. HRV measures the adaptability of the cardiovascular system and autonomic nervous system, which is composed of the sympathetic nervous system (SNS) and parasympathetic nervous system (PNS).

    1. The Heart Rate or Beats per Minute is displayed using a graph and numerical value that will change during the course of the three-minute test.
    2. Plethysmograph (PTG): The “basic” waveform signal that indicates pulsation of the chest wall and great arteries followed by the heartbeat. This shows the device picking up the pulse wave from your heartbeat through your fingertip in real-time.
    3. Accelerated Plethysmograph (APG): The “final analysis” waveform. APG measures the blood circulation state and aging level of blood vessels.
    4. HRV (Heart Rate Variability) Tachogram: A green linear record displaying the HRV information collected during a three-minute period of time (indicated by the pink bar).
    5. HR (Heart Rate) Variability: A graphical representation of heartbeats. The more they are dispersed and spread out in a group, the more adaptable your cardiovascular system.
    6. DPI – Differential Pulse Wave Index: Differential Pulse Wave Index: Represents the overall health of the cardiovascular system. DPI is the main indicator that represents aging vascular health.
    7. EC – Eccentric Constriction: Eccentric Constriction: Represents the contraction power of vessels from the left ventricle.
    8. AE – Arterial Elasticity: Analyzes the blood circulation, vascular elasticity, and resistance of the vessels. It detects early cardiovascular diseases like atherosclerosis and peripheral circulation dysfunction.
    9. RBV – Remaining Blood Volume: The remaining blood volume in the vessels after systolic contraction on the heart. If the blood vessels are healthy, there is little remaining blood volume. If the vascular state improves, the remaining blood volume will decrease. This will reflect an improved remaining blood volume score.

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    Your Sympathetic Nervous System (SNS) plays the role of the accelerator, also known as flight or fight. Your Parasympathetic Nervous System (PNS) functions is the brake, also known as rest and repair. A healthy person has a balanced autonomic nervous system.

     

    Sympathetic (SNS) and Parasympathetic (PNS) Measurement:

    This measure indicates an overall balance between sympathetic and parasympathetic systems. It is the ratio between the power of Low Frequency and High-Frequency bands. A higher ratio reflects the domination of the SNS, while a lower ratio indicates the domination of the PNS. This ratio is used to quantify the overall balance between the sympathetic and parasympathetic systems. The balance is indicated on a bar graph with 2 bars, one each for SNS and PNS. Frequency domain measurement confirms that the LF and HF oscillatory components are relative indices of cardiac sympathetic and vagal (parasympathetic) activity respectively.

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    The frequency-domain graph indicates the strength of the signal within each frequency band over a range of frequencies. The device analyzes specific domain ranges associated with HRV and ANS function:

    • Total Power (TP) combination of the 3 frequencies
    • Very Low Frequency (VLF) at 0.0033 and 0.04 Hz
    • Low Frequency (LF) at 0.04 to 0.15 Hz
    • High Frequency (HF) at 0.15 to 0.4 Hz

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    Total Power (TP):

    Total Power is a short-term estimate of the total power, of the power spectral density, in the range of frequencies between 0 and .4 Hz. This measure reflects overall autonomic activity where the sympathetic activity is the primary contributor and is calculated in milliseconds squared (ms2). Total Power is a general reading obtained by each of the three specific frequencies above. If it is located within the I-bar or above, it means that the autonomic nervous system is functioning well. If it falls below the I-bar, it means the autonomic nervous system is functioning poorly and that stress resistance is also weak. The clinical meaning of TP in the frequency domain is similar to that of HRV.

    Very Low Frequency (VLF):

    Very Low Frequency is a band of power spectrum range between 0.0033 and 0.04 Hz. Generally, this frequency range indicates the overall activity of various slow mechanisms of sympathetic function. Very Low-Frequency band is calculated in milliseconds squared (ms2). With longer time recordings it is considered to represent sympathetic tone as well as slower hormonal and thermoregulatory effects. There are some findings indicating that in shorter recordings VLF has a fair representation of various mental stress factors (negative emotions, worries, rumination, etc.)

    Low Frequency (LF):

    Low Frequency is a band of power spectrum range between 0.04 and 0.15 Hz. This measure reflects both sympathetic and parasympathetic activity. Generally, it is a strong indicator of sympathetic activity. Parasympathetic influence is represented by LF when respiration rate is lower than 7 breaths per minute or when taking a deep breath. Thus, when the subject is in a state of relaxation with slow and even breathing, the LF values can be very high indicating increased parasympathetic activity rather than an increase in sympathetic regulation. The low-Frequency band is calculated in milliseconds squared (ms2). LF shows the activity of the sympathetic nerve and parasympathetic nerve at the same time, but it mostly indicates the sympathetic nerve system.

    High Frequency (HF):

    High Frequency is a band of power spectrum range between 0.15 and 0.4 Hz. This band reflects parasympathetic (vagal) activity. HF is also known as a ‘respiratory’ band because it corresponds to the beat-to-beat variations caused by respiration. This phenomenon is known as Respiratory Sinus Arrhythmia (RSA). Heart rate increases during inhalation and decreases during exhalation. This band reflects the parasympathetic or vagal activity of the ANS, which was confirmed after a large number of studies indicated that total vagal blockade essentially eliminates the HF oscillations and reduces power in the LF range.

    Your brain is the motherboard that controls everything! Evaluating the messages your brain is sending to your cardiovascular system is the best way to detect problems LONG BEFORE your heart is actually affected.

    Dr. Lisbeth Roy, D.O.

    Founder of Doctors Studio

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