Copyright © 2011 Sun Scientific Corp.  All rights reserved.  Privacy Policy  Send Feedback
We never collect personal information on this site.
***This website is
voted one of the
best websites for
information on
Heart Rate
Variability (HRV),
Irregular
Heartbeats, and
Autonomic Nervous
System (ANS)
You are at the official
site of
ANSWatch - a
multi-functional wrist
monitor
How to review your BP and HRV parameters after ANSWatch tests

  • Patient parameters, such as blood pressures, heart rate variability (HRV), and
    functions of autonomic nervous system (ANS), are often influenced by age, sex,
    season, region of living, medication, and other body conditions.  
  • Whether these values are normal (or healthy) require professional diagnosis based
    upon several related tests. It is strongly suggested that you show your test results to
    your physician for data interpretation.
  • Based upon published literature (World Health Organization, European Society of
    Cardiology, North American Society of Pacing and Electrophysiology, and other
    related journal articles) and our own research, the tables below offer users a first-
    hand reference on normal and warning ranges of the eight patient parameters
    measured by ANSWatch. Do not use these tables for diagnosis of any disease
    without consultation with your doctors.  
Are My Bio Signs Normal?
Patient Parameter
Physiological Meaning
Normal Range
Warning Range
HR (1/min)
Heartbeat per min
60 – 100 (ave. 72)
Below 60 or
above100
SYS (mmHg)
Systolic Pressure
90 – 140 (ave. 110)
Below 70 or
above140
DIA (mmHg)
Diastolic Pressure
60 – 90 (ave. 70)
Below 60 or above
90
HRV (ms)
Heart rate variability; ANS total activity
index
25 – 100 (ave. 60)
Below 15
LF (%)
Low frequency %; sympathetic activity index
45 – 70 (ave. 60)
Below 30% or
above 70%
HF (%)
High frequency %; para-sympathetic
activity index
30 – 55 (ave. 40)
Below 30% or
above 70%
LF/HF
Low frequency/High frequency ratio;
sympathetic-parasympathetic balance index
0.5 – 2.5 (ave. 1.5)
Below 0.4 or above
3
Note: Large scale human clinical trials are being conducted by the world medical community to generate
consensus on normal ranges of HRV indexes.  The above table is for your initial reference only.
Table 1: Normal Range of Patient Parameters Measured by ANSWatch
Table 2: ANS Total Activity Index (HRV) Normal Values in Relation to
Age and Sex
Age
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Male
HRV
60
56
46
41
36
31
29
27
26
25
20
20
17
15
10
8
Female
HRV
65
60
50
44
39
34
31
28
26
25
20
20
17
15
10
8
Table 3: Sympathetic- Parasympathetic Balance Index Ranking
LF/HF
Above 3.0
1.5-3.0
0.8-1.5*
0.3-0.8
Below 0.3
Ranking
Sympathetic
over-dominance
Sympathetic
dominance
Normal*
Parasympathetic
dominance
Parasympathetic
over-dominance
*Note: Clinical records have shown that men tend to have a slightly higher LF/HF (normal range 1.2-1.5,
indicating slightly sympathetic dominance), while women tend to have a slightly lower LF/HF (normal range
0.8-1.0, indicating slightly parasympathetic dominance)
  • If irregular heartbeats are detected by ANSWatch, the test data pages will show IrHB
    key (Fig 1).  Number of irregular heartbeats during the 5-min monitoring period is
    also shown
  • Press YELLOW key (IrHB) to view irregular pulse waves (Fig 2). Press ORANGE or
    GREEN keys to switch between pages
  • Whether or not irregular heartbeats are caused by cardiac arrhythmias require
    professional judgment. Please consult with your physicians
  • Pulse waves of common cardiac arrhythmias are shown in Fig 3

Fig 1: Test data page showing number of irregular heartbeats (6) and the IrHB key











Fig 2: Press IrHB key to view each irregular heartbeats










(Irregular heartbeats caused by                 (Cardiac arrhythmias)
body movement /caugh)

Fig 3: (1)Normal pulse waves (2)Delayed heartbeat (3)Skipped heartbeat
(4)Early heartbeat followed by delayed heartbeat
(5)Constant cardiac arrhythmias
(6)Random cardiac arrhythmias
Do I have Cardiac Arrhythmias (Irregular Heartbeats)?
Simple Steps to Self Monitoring
  • Establish first the baselines of body parameters by consecutive tests at the same
    time zone of the day (morning, afternoon, or evening) for several days
  • Continue to monitor. Ignore the occasional outliers (caused by cold, flu, or bad
    sleep, etc.)  
  • Pay attention to any trendy change or deviation from the baseline. If the new trend is
    in the direction of improvement, that means any action taken recently is working;
    Conversely, if the change is towards worsening, consult with your physicians.
Join
ANSWatch customers
(professionals and
individuals) for
experience sharing and
in-depth discussions at  
FACEBOOK
(click to enter)
Do you have     
hypertension?
- are you monitoring   
frequently?
- are you taking
prescription drugs?
- are you aware of drug
side effects on ANS?
- self-improvement tips
Read more......
Feeling dizzy      
or even fainted?
- are you low in blood
pressure or heart rate?
- are you taking
prescription drugs?
- You may experience
Baroreflex failure
Read more......
Irregular heartbeats?
- often noticing abnormal
heartbeats (missing,
uneven, or super-fast)?
- Yo might have cardiac
arrhythmias
- Most sudden death
events are preceded by
irregular heartbeats
Read more......
Mitral Valve Prolapse?
- Mitral valve is the
bicuspid valve between left
atrium and ventricle
- If mitral valve is not
closed properly (called
mitral valve prolapse
MVP), the blood may
backflow during pumping
- there is a strong
connection between panic
attackes and MVP
- How to detect it?
Read more......
Am I having   
dysautonimia?
- autonomic nervous
system works to fine tune
body conditions depending
on physiological needs
- ANS consists of two
branches: sympathetic and
parasympathetic
- do you have balanced
ANS?
- what are the symptoms of
dysautonomia?
Read more......
How to Conduct Self-Monitoring?