You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is What all should be taken care of when performing  a physical examination for FEVER WITHOUT A FOCUS  and explain in detail?
While performing a complete physical examination, pay particular attention to assessing hydration status and identifying the source of infection. Physical examination of every febrile child should include the following: Record vital signs. 1. Temperature: Rectal temperature is the standard. Temperature obtained via tympanic, axillary, or oral methods may not truly reflect the patient s temperature. 2. Pulse rate 3. Respiratory rate 4. Blood pressure Measure pulse oximetry levels. 1. Pulse oximetry may be a more sensitive predictor of pulmonary infection than respiratory rate in patients of all ages, but especially in infants and young children. 2. Pulse oximetry is mandatory for any child with abnormal lung examination findings, respiratory symptoms, or abnormal respiratory rate, although keep in mind that the respiratory rate increases when children are febrile. Record an accurate weight on every chart. 1. All pharmacologic and procedural treatments are based on the weight in kilograms. 2. In urgent situations, estimating methods (eg, Broselow tape, weight based on age) may be used. During the examination, concentrate on identifying any of the following: 1. Toxic appearance, which suggests possible signs of lethargy, poor perfusion, hypoventilation or hyperventilation, or cyanosis (ie, shock) 2. A focus of infection that is the apparent cause of the fever 3. Minor foci (eg, otitis media, pharyngitis, sinusitis, skin or soft tissue infection) 4. Identifiable viral infection (eg, bronchiolitis, croup, gingivostomatitis, viral gastroenteritis, varicella, hand-foot-and-mouth disease) 5.  Petechial or purpuric rashes, often associated with bacteremia 6. Purpura, which is associated more often with meningococcemia than is the presence of petechiae alone For all patients aged 2-36 months, management decisions are based on the degree of toxicity and the identification of serious bacterial infection.