is breathing in excess of what the body means blowing off too much CO2 thereby LOWERING the CO2
level beneath 35 mmhg. Hyperventilation is breathing that is deeper and more rapid than normal. It causes a decrease in the amount of a gas in the blood (called carbon dioxide, or CO2). This decrease will cause a patient to be lightheaded, have a rapid heartbeat, and be short of breath. It also can lead to numbness or tingling in your hands or feet, anxiety, fainting, muscles spasms and cramping, and sore chest muscles.Hyperventilation causes the carbon dioxide level in the blood to decrease. This lower level of carbon dioxide reduces blood flow to the brain, which may result in the following nervous system and emotional symptoms.
- A feeling of being outside yourself
- Seeing images that aren't there
- Feeling as if you can't breathe
Overbreathing can also cause the calcium levels to drop in your blood, which may result in the following nervous system symptoms:
- Numbness and tingling (usually in both arms or around the mouth)
- Spasms or cramps of the hands and feet
(Carpal Pedal syndrome....Hand or foot spasms: MedlinePlus Medical Encyclopedia
Many different factors can cause chest symptoms with hyperventilation syndrome. Normally, breathing is relaxed. If a person over breathes, the lungs become overinflated. Without thinking about it, the person might use the chest muscles to expand the rib cage. This extra muscle work will feel like shortness of breath, and the person will have difficulty taking a deep breath. The chest muscles will become tired, just like the legs tire after a long run. The lowered carbon dioxide
levels in the blood can cause squeezing of the airways, which then results in wheezing.
Hyperventilation Causes, Symptoms, Treatment - Hyperventilation Symptoms on eMedicineHealth
When you are breathing too fast or taking frequent deep breaths you blow off too much C02 there fore DECREASING CO2 levels dropping them below 35 mmhg.
Medscape: Medscape Access Hyperventilation Syndrome
requires registration but it's free and a great resource.
The respiratory system serves a dual purpose: delivering oxygen to the pulmonary capillary bed from the environment and eliminating carbon dioxide from the blood stream by removing it from the pulmonary capillary bed. Metabolic production of carbon dioxide occurs rapidly. Thus, a failure of ventilation promptly increases the levels of carbon dioxide
measured by arterial blood gas analysis (PaCO2
) greater than 45mmHg. Medscape: Medscape Access
Alveolar hypoventilation is defined as insufficient ventilation leading to an increase in PaCO2
(also known as respiratory depression
) occurs when ventilation is inadequate(hypo
means "below") to perform needed gas exchange. By definition it causes an increased concentration of carbon dioxide
(hypercapnia) and respiratory acidosis.
Medscape: Medscape Access Hypoventilation Syndromes Treatment & Management
Breathing too slow or with peroid of apnea (as in sleep apnea) caused the CO2 levels to rise and cause a desreased LOC leading to a condition called CO2 narcosis.Hypoventilation Treatment | Hypoventilation Syndrome
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I hope this helps and your book was right.......