A 4-years old boy presents to the Emergency Department with a two-day history of fever, difficulty walking and is unable to weight bear on the right leg. He has been on oral Amoxycillin 250 mg three times a day for a chest infection over the last five days. He is irritable with a temperature of 39.4°C. He does not allow examination and keeps his right hip flexed and adducted. Blood tests are, (WBC) 18.3 (CRP) 146, haemoglobin 11.3 g/dL. What is the most likely diagnosis?

A 32 year-old woman has a pigmented lesion excised from her left calf. The histopathological diagnosis is melanoma in situ, which is completely excised with a- 1 cm margin. What is the next most appropriate management.?

A 60-year-old man with a past history of angina undergoes an uncomplicated operation, for an inguinal hernia. Postoperatively he is found to be hypotensive, tachycardic and has a raised jugular venous pressure. What is the most likely Underlying cause of his hypotension?

A 25-year-old male athlete is in training. At rest, how many liters of blood per minute does his heart pump out?

A thin menopausal 52-year-old woman is diagnosed with breast cancer. Her menarche was at the age of 14y. She had her first child at age40 years. During lactation, she developed breast abscess that necessitated surgical intervention. She has no family history of breast cancer. Which of the following is the most significant risk factor for this patient.?