is a fever (positive feedback loop) regulated by a negative feedback loop?? if so which one? the internet is confusing me

A65-year-old male was admitted for evaluation of pain on swallowing and a sore throat that has persisted for the past year. the discomfort has not changed with the use of various over the counter cold remedies. the client has lost weight due to a decrease in appetite and difficulty swallowing. he has smoked 3 packs of cigarettes a day for 40 years.a laryngoscopy showed a subglottic mass. the client had a total laryngectomy with a tracheostomy to manage laryngeal cancer. he also has a nasogastric tube in place. you will be providing care for this client during his first 72 hours after surgery. a. select one nanda-i nursing diagnosis and describe why it is a priority for this client. b. what is the cause or related factor for this nanda-i nursing diagnosis? c. identify an outcome for this nanda-i nursing diagnosis. the outcome must be patient-centered and measurable. d. identify two (2) nursing interventions that will this client achieve the outcome. e. describe how each intervention will the patient achieve the outcome.