Central cyanosis is secondary to
a. changes in outside temperature. c. nervous anxiety.
b. marked heart and lung disease. d. age-related changes in skin color.
B
Central cyanosis is secondary to marked heart and lung diseases such as congestive heart failure, chronic obstructive pulmonary disease, or emphysema. Peripheral cyanosis can be secondary to systemic diseases or vasoconstriction stimulated by cold temperature or anxiety. Central cyanosis is not associated with age-related changes in skin color.
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