infections

Question 1

6 y/o with a fever, convulsion + altered consciousness,

diagnosis + causative organism

Answer 1

encephalitis
herpes simplex

(!! viruses - varicella-zoster, mumps, measles)

Question 2

6y/o with low grade fever, cough + erythematous rash

Answer 2

chest infection
mycoplasma pneumoniae
–> rash is caused by this specific organism

Question 3

6 month old girl with temp of 40, irritability, crying when peeing + haemodynamic stability

Answer 3

E coli

UTI

Question 4

child with reduced consciousness, purpuric rash + low bp

Answer 4

speticaemia
neisseria meningococcus

(hypotension -> septic shock)

Question 5

9 month infant with irritability, fever, pulling at ear

diagnosis + causative organism

Answer 5

otitis media
commonest cause = strep pneumoniae

also - haemophilus influenzae, moraxella, staph aureus

Question 6

premature baby low birth weight with fever, bulging fontanelle, non-blanching rash, fever + vomiting

diagnosis + causative organism

Answer 6

meningitis
group B streptococcus (commonest in neonates)

(older = neisseria meningitidis, strep pneumoniae)