A 16-year-old male is admitted with a history of passage
of blood in his urine and swelling of his face.
On examination there is facial and ankle oedema. On
examination of his hands there is evidence of infected scabies. His blood
pressure is marginally elevated.
Investigations show haematuria and red cell casts. Blood
urea is elevated. C 3 and C 4 levels are reduced.
Abdominal ultrasound shows normal sized kidneys.
In this patient which of the following interventions
would not be beneficial?
Low salt diet
Treatment with penicillin