In medicine, hypoventilation (also known as respiratory depression) occurs when ventilation is inadequate (hypo meaning `below`) to perform needed gas exchange. By definition it causes an increased concentration of carbon dioxide (hypercapnia) and respiratory acidosis. ==Causes== It can be caused by medical conditions, such as stroke affecting t.....
a state in which there is a reduced amount of air entering the pulmonary alveoli.
A state in which there is a reduced amount of air entering the pulmonary alveoli. ... (18 Nov 1997) ... 
(hi″po-ven″tĭ-la´shәn) a state in which there is a reduced amount of air entering the pulmonary alveoli (decreased alveolar ventilation), which causes an increase in arterial carbon dioxide level. See also hypopnea and bradypnea.
Type: Term Pronunciation: hī′pō-ven′ti-lā′shŭn Definitions: 1. Reduced alveolar ventilation relative to metabolic carbon dioxide production, so that alveolar carbon dioxide pressure increases above normal. Synonyms: underventilation
Hypoventilation: The state in which a reduced amount of air enters the alveoli in the lungs, resulting in decreased levels of oxygen and increased levels of carbon dioxide in the blood. Hypoventilation can be due to breathing that is too shallow (hypopnea) or too slow (bradypnea) or to diminished lung function. The opposite of hypoventilation is hy...
breathing at an abnormally low rate that leads to elevated carbon dioxide level in blood.
a slower-than-normal breathing rate