What is cyanosis

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Cyanosis is a bluish discoloration of the skin or mucous membranes caused by lack of oxygen in the blood. ChaCha! [ Source: http://www.chacha.com/question/what-is-cyanosis ]
More Answers to “What is cyanosis
When hemoglobin is poorly oxygenated, both the blood and the skin of Caucasians appear blue.
http://wiki.answers.com/Q/What_is_the_cyanosis
Cyanosis is usually caused by deoxyhaemoglobin (the deoxygenated form of the blood’s oxygen-carrying haemoglobin molecule), which imparts a blue colour to the skin and mucous membranes.
http://www.medicalnewstoday.com/articles/73473.php
Definition 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. Cyanosis is associated with cold temperatures, heart failure, lung diseases, and smot…
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Related Questions Answered on Y!Answers

can cyanosis, blue nail beds occur when a person dies instantly?
Q: My son was killed in a car accident. The medical examiners office reported cyanosis, blue nail beds, and said he lived for 30 minutes after the accident on the death certificate. The first man on the scene of the accident reported that my son was killed instantly. So I need to know, can cyanosis, blue nail beds occur when a person dies instantly?
A: Cyanosis will always occur after death due to the cessation of circulation. The first person on scene often can’t determine time of death. I’m an EMT. In order to determine an approximate time of death, someone trained in that field will have to examine the body. I’m very sorry for your loss. My heart goes out to you. Stay strong.
What disease could cause cyanosis, increased aggression, and delusion?
Q: I need an answer for a writing project, I’m working on. Thank you.
A: It’s possible that some one who has had a certain kind of brain trauma can exhibit cyanosis, aggression & delusional behavior. I know that I’ve dealt with this. No need to say “increased” aggression because we shouldn’t be aggressive to begin with. Respiratory acidosis or an acid-base imbalance can cause cyanosis and aggression, possibly delusions such as perceived threats. These are conditions not diseases. COPDs like emphysema, severe asthma, chronic bronchitis and neuromuscular diseases can cause respiratory acidosis . Necrotizing enterocolitis causes acid-base imbalances.
What are the PaO2 Scores for mild/moderate/severe cyanosis when tested on a ABG.?
Q: I ask because different text books have different answers. Some just say that the normal AaO2 is 80 to 100; but others say 80 to 95; what are the exact boundaries between mild to moderate and moderate to severe cyanosis?
A: Well different textbooks will always have different normals. My normal value that I use is a PaO2 of 80-100mmHg. Mild Hypoxemia is a value of 60-79mmHgModerate Hypoxemia is 40-59mmHgSevere Hypoxemia is any value <40mmHgNormal SaO2 (pulse ox) is 95-100%Cyanosis occurs as a result of a drop of at least 5g/dL of oxygenated hemoglobin in the blood.
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