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Older man in the hospital

Ineffective Breathing Patterns: Very Common in Sick

As we learned from tens of medical studies, mildly, not critically, sick people breathe about 2-2.5 times more air than the physiological norms. Their ineffective breathing patterns are characterized by 12-18 L/min for minute ventilation (chronic deep breathing) at rest instead of 6 L/min. As a result, sick people have only 10-20 s for the body oxygen test due to heavy and deep breathing (chronic hyperventilation).

If you observe the breathing of sick people, you will notice that they have ineffective breathing. It is usually visible (with chest movements) and audible (possible panting, wheezing, sighing, yawning, sneezing, coughing, deep inhalations or exhalations). The mouth can be used for breathing at rest. Here are some studies that measured breathing in the sick.

Minute ventilation rates (chronic diseases)

Condition Minute
ventilation
Number of
people
All references or
click below for abstracts
Normal breathing 6 L/min - Medical textbooks
Healthy Subjects 6-7 L/min >400 Results of 14 studies
Heart disease 15 (±4) L/min 22 Dimopoulou et al, 2001
Heart disease 16 (±2) L/min 11 Johnson et al, 2000
Heart disease 12 (±3) L/min 132 Fanfulla et al, 1998
Heart disease 15 (±4) L/min 55 Clark et al, 1997
Heart disease 13 (±4) L/min 15 Banning et al, 1995
Heart disease 15 (±4) L/min 88 Clark et al, 1995
Heart disease  14 (±2) L/min 30 Buller et al, 1990
Heart disease 16 (±6) L/min 20 Elborn et al, 1990
Pulm hypertension 12 (±2) L/min 11 D'Alonzo et al, 1987
Cancer 12 (±2) L/min 40 Travers et al, 2008
Diabetes 12-17 L/min 26 Bottini et al, 2003
Diabetes 15 (±2) L/min 45 Tantucci et al, 2001
Diabetes 12 (±2) L/min 8 Mancini et al, 1999
Diabetes 10-20 L/min 28 Tantucci et al, 1997
Diabetes 13 (±2) L/min 20 Tantucci et al, 1996
Asthma 13 (±2) L/min 16 Chalupa et al, 2004
Asthma 15 L/min 8 Johnson et al, 1995
Asthma 14 (±6) L/min 39 Bowler et al, 1998
Asthma 13 (±4) L/min 17 Kassabian et al, 1982
Asthma 12 L/min 101 McFadden & Lyons, 1968
COPD 14 (±2) L/min 12 Palange et al, 2001
COPD 12 (±2) L/min 10 Sinderby et al, 2001
COPD 14 L/min 3 Stulbarg et al, 2001
Sleep apnea 15 (±3) L/min 20 Radwan et al, 2001
Liver cirrhosis 11-18 L/min 24 Epstein et al, 1998
Hyperthyroidism 15 (±1) L/min 42 Kahaly, 1998
Cystic fibrosis 15 L/min 15 Fauroux et al, 2006
Cystic fibrosis 10 L/min 11 Browning et al, 1990
Cystic fibrosis* 10 L/min 10 Ward et al, 1999
CF and diabetes* 10 L/min 7 Ward et al, 1999
Cystic fibrosis 16 L/min 7 Dodd et al, 2006
Cystic fibrosis 18 L/min 9 McKone et al, 2005
Cystic fibrosis* 13 (±2) L/min 10 Bell et al, 1996
Cystic fibrosis 11-14 L/min 6 Tepper et al, 1983
Epilepsy 13 L/min 12 Esquivel et al, 1991
CHV 13 (±2) L/min 134 Han et al, 1997
Panic disorder 12 (±5) L/min 12 Pain et al, 1991
Bipolar disorder 11 (±2) L/min 16 MacKinnon et al, 2007
Dystrophia myotonica 16 (±4) L/min 12 Clague et al, 1994

For sick people (10-20 s CP for their body oxygen test), with their ineffective breathing pattern, the durations of inhalations and exhalations, breathing rate, amount of air inhaled per breath and other parameters are individual.

Young doctorsMany sick people can have the following parameters of their breathing cycle (see the Figure below):
- inhalation (about 1.5-2 s)
- exhalation (1.5-2 s)
- no automatic pause
- the depth of inhalation or tidal volume is about 700-1,000 ml
- the respiratory rate is over 18 breaths/min (usually about 20-25 breaths/min for the mildly sick)
- the cells oxygen level (breath holding time test) is less than 20 s. Hence, they breathe too deep and too fast in comparison with the normal breathing pattern or ideal breathing pattern.

Ineffective breathing pattern

Fig. Ineffective breathing pattern, typical for the sick: deep and heavy breathing pattern; deep, forceful, and fast inhalations and exhalations, no automatic pause. Hypocapnia (CO2 deficiency) reduces blood oxygenation and the CP (cells oxygen level).

CO2 modelHence, all medical evidence and clinical experience show that sick people, with chronic health problems, have heavy and deep ineffective breathing pattern. Since overbreathing cannot improve normal oxygenation of the arterial blood (the normal value is about 98%), this ineffective breathing pattern reduces CO2 concentrations in the blood and cells (creating hypocapnia). Carbon dioxide deficiency leads to constriction of blood vessels and the suppressed Bohr effect.  Both physiological processes makes cells oxygen deficient, as we are going to learn more in the next Section. Their respiratory are usually much worse during early morning hours due to Morning Hyperventilation Effect.

This video clip from YouTube (Breathing Patterns and Buteyko Oxygen Test (Buteyko Technique)) explains the link between the ineffective breathing pattern (present in most sick people) and body oxygenation test results.

Reference Web Pages: Breathing norms, Medical Graphs and Tables about Breathing Rates (Minute Ventilation) and Body Oxygen in Healthy, Normal and Sick People
Breathing norms Parameters, graph, and description of the normal breathing pattern
6 breathing myths 6 myths about breathing and body oxygenation (prevalence: over 90%)
Hyperventilation Definitions of hyperventilation: their advantages and weak points
Hyperventilation Syndrome in the Sick. Table 1. Western scientific evidence about prevalence of CHV (chronic hyperventilation) in patients with various chronic conditions (34 medical studies)
Normal Minute Ventilation in Healthy Subjects: Easy and Light Breathing (14 Studies)
Hyperventilation Prevalence Present in Over 90% of Normal People (24 medical publications)
HV and hypoxia How and why deep breathing reduces oxygenation of cells and tissues of all vital organs
Body oxygen test How to measure your own breathing and body oxygenation (a simple DIY test)
Body oxygen in healthy Table 4. CP (body oxygen level) in healthy people (27 medical studies)
Body oxygen in sick Table 5. CP (body oxygen level) in sick people (14 medical studies)
Buteyko Table of Health Zones with clinical description of most common zones
Morning HV Morning hyperventilation effect or how and why critically ill people are most likely to die during early morning hours

References: CO2 Effects Web Pages
Vasodilation: CO2 expands arteries and arterioles facilitating perfusion (or blood supply) to all vital organs
The Bohr effect How and why oxygen is released by red blood cells in tissues
Cell Oxygen Levels and oxygen transport are controlled by alveolar CO2 and breathing
Oxygen Transport depends on breathing and these two effects (Vasoconstriction-Vasodilation and the Bohr effect) are parts of two diagrams that summarize influences of hypocapnia (low CO2 content in the blood and cells) on circulation and O2 delivery
Free Radical Generation takes place due to anaerobic cell respiration caused by cell hypoxia. Hence, antioxidant defenses of the human body are also regulated by CO2 and breathing
Inflammatory Response is controlled by breathing since hypoxia leads to or intensifies chronic inflammation through over-expression of the hypoxia-inducible factor 1, while normal breathing reduces these processes
Nerve stabilization takes place due to calmative or sedative effects of carbon dioxide in neurons or nerve cells
Muscle relaxation or relaxation of muscle cells is normal at high CO2, while hypocapnia causes muscular tension, poor posture and, sometimes, aggression and violence
Brochodilation - dilation of airways (bronchi and bronchioles) by carbon dioxide, and their constriction due to hypocapnia
CO2: Best Natural Cough Suppressant and "home remedy" since it calms urge-to-cough nerve receptors located in the tracheobronchial tree and larynx
Blood pH regulation and regulation of other bodily fluids
CO2: Lung Damage Healer: Elevated carbon dioxide prevents injury and promotes healing of lung tissues
CO2: Skin and Tissue Healer
Synthesis of Glutamine in the Brain, CO2 fixation, and other chemical reactions
CO2 myth "CO2 is a toxic waste gas" myth
Breathing control How is our breathing regulated? Why hypocapnia makes breathing uneven and erratic?

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