<prompt> A 5-year-old child is brought to the hospital with the complaint of fever, cough, breathlessness and chest pain. On examination he is found to be dull, but irritable with fast pulse 116min, rapid breathing RR 50min and indrawing of lower chest during inspiration, wheezing, crepitations and mild dehydration. Body temperature is 40C 104F. The paediatrician makes a provisional diagnosis of acute pneumonia and orders relevant haematological as well as bacteriological investigations. He decides to institute antibiotic therapy.In case he selects an antibiotic which can be given orally as well as by i.m. or i.v. injection,which route of administration will be most appropriate in this case?Orali.m.i.v.s.c.  <response>: Since the child is seriously ill, a fast and more predictable action of the antibiotic is needed; a parenteral route of administration is appropriate. Moreover, oral dosing may be difficult in this case as the child is dull and irritable. Entering a vein for i.v. injection is relatively difficult in children, particularly in the presence of dehydration. Therefore, the antibiotic may be injected i.m. However, if an i.v. line is set up for rehydration, the antibiotic may be administered through the i.v. line. 