Radiation necrosis, a focal structural lesion that usually occurs at the original tumor site, is a potential long-term central nervous system (CNS) complication of radiotherapy or radiosurgery. Edema and the presence of tumor render the CNS parenchyma in the tumor bed more susceptible to radiation necrosis. Radiation necrosis can occur when radiotherapy is used to treat primary CNS tumors, metastatic disease, or head and neck malignancies. It can occur secondary to any form of radiotherapy modality or regimen.
The partial oxygen pressure (pO2) should be high for the maximum loading of hemoglobin with the oxygen.
Hemoglobin is a quaternary protein that transports oxygen in the blood. Hemoglobin is made up of four heme subunits and an Iron atom. Blood oxygen is bound to the hemoglobin in red blood cells. One molecule of hemoglobin binds the four oxygen molecules and forms the oxyhemoglobin.
The partial pressure of the oxygen is an important factor that determines the binding affinity of oxygen to the hemoglobin. The higher the partial pressure of oxygen the more oxygen binds with the hemoglobin. The hemoglobin binds oxygen rapidly in the pulmonary capillaries of the lungs due to higher partial pressure of oxygen.
Learn more about Oxyhemoglobin here,
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Answer:
when he arrives late, he should apologize and tell the truth about what happened.
Explanation:
go to the meeting, say sorry about your inevitable lateness 'cause the traffic. after the meeting, if you're friends with the ppl, you can invite them out to fix it felix frozen yogurt.
Answer: Post Traumatic Stress Disorder
Explanation:
One of the symptoms of PTSD is being unable to confront the causes and effects of the events that traumatized the person so that they don't recreate the event itself.
Ginny is going out at night to avoid children as she does not want to think about the child she had lost and she is avoiding her parents as they are the ones who caused the situation in the first place. This points to classic PTSD.
