This case study focuses on Peter Brown, a 62-year-old female patient suffering from severe Diabetic Ketoacidosis (DKA), a life-threatening complication of type 1 diabetes. The study details her symptoms, including frequent urination, abdominal pain, and vomiting, along with her medical history of obesity and hypertension. Assessment revealed a blood glucose level of 19 mMol/L and a blood ketone level of 4.2 mmol/L, indicating severe DKA. The treatment plan includes intravenous fluids for rehydration and insulin therapy to address insulin deficiency. Nursing considerations emphasize diabetes management, including regular blood glucose monitoring and monitoring vital signs, along with addressing the patient's psychological issues such as depression. Collaboration with other healthcare professionals like dietitians and counselors is recommended for a holistic approach to patient care. The study references several research papers to support the treatment and care approaches for DKA.