A patient who is being ventilated is demonstrating respiratory acidosis. The nurse suspects that which of the following metabolic processes is malfunctioning?
1. anaerobic metabolism
2. aerobic metabolism
3. anabolism
4. catabolism
2
Rationale: The aerobic metabolism forms adenosine triphosphate through the Krebs cycle. The byproduct of this metabolism is carbon dioxide and water. Carbon dioxide and water normally are harmless and easily excreted from the body; however, excess retention of either of these substances can result in acid–base and fluid excess problems. Anaerobic metabolism occurs in the absence of oxygen however the patient is being ventilated. Anabolism is the process of cell synthesis which builds body tissues. Catabolism is the process by which complex nutrients and body tissues are broken down into more basic elements such as glucose, fatty acids, and amino acids for the purpose of liberating energy necessary to maintain bodily functions.
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