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Infants with a patent foramen ovale and no other heart defects do not have symptoms.
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Cyanosis is a physical sign causing bluish discoloration of the skin and mucous membranes. Cyanosis is caused by a lack of oxygen in the blood.
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Cyanosis is a physical state characterized by bluish discoloration of the skin and mucus membranes. This elderly woman's lips turned purple due to central cyanosis, a condition most commonly due to slow blood circulation, leading to a bluish skin coloration.
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