A four year old boy presents with a cough and fever for the last few weeks which became worse in the last 24 hours. There is no record of his vaccination history His temperature is 38.5 °C, heart rate 135 beats per minute, and oxygen saturations are 97% He is coughing frequently and has bilateral subconjunctival haemorrhages.
Which organism is most likely to have caused his condition?

A doctor about to sit an important examination has become aware of the urge to detaecate Involuntary relaxation of which muscle is most likely to have occurred?

A 43 year old woman has fallen from a horse and has paralysis of the legs She has full movement at the shoulder and wrist but is unable to flex or abduct/adduct her fingers What is the most likely vertebral level of the spinal injury1?

A patient is noted to have a low sodium level. The urinary biochemistry suggests a diagnosis of syndrome of inappropriate anti-diuretic hormone secretion.
Which of these medications is the most likely cause of this abnormality?

A 60 year old woman presents with shortness of breath and signs of pulmonary oedema. An echocardiogram demonstrates reduced left ventricular systolic function.
Which measurement on echocardiogram best demonstrates this?