The correct answer is: nurse should provide fluids to patient (rehydratration).
Sickle cell anemia is a genetic disorder caused by a mutation in the gene which encodes for hemoglobin (oxygen carrying protein). Patients with this disorder often experience vaso-occlusive crisis (VOC), condition caused by the blockage of small blood vessels. Oxygen supply to the tissue is blocked and that causes pain and injuries. VOC is usually triggered by dehidratation, so, rehydration is recommended. Oxygen therapy and opioids use are also the way for VOC treatment.
Metabolism.................
Answer:
About 5 billion years ago