QuestionSBA
QuestionChoice
This is incorrect. Legionella pneumophilia infections typically present with fever, myalgia and malaise followed by a dry cough. It is usually seen in patients exposed to poor hotel air conditioning.
10027600
e
Legionella pneumophilia
QuestionChoice
This is incorrect. This is a gram-positive cocci found in clusters and is associated with intravenous drug users, elderly patients or patients who already have an influenza infection. Although it is the most common type of pneumonia it is not the most common in those with cystic fibrosis.
10027597
b
Streptococcus pneumoniae
QuestionChoice
This is correct. This is a gram-negative rod and is a multi-drug-resistant pathogen. *P. aerunginosa* is the most common pathogen in people with cystic above the age of 16. Management should involve blood cultures and local infectious disease guidelines. Antibiotics such as ciprofloxacin are usually given first line, at a higher dose than for those without cystic fibrosis.
10027596
a
Pseudomonas aeruginosa
QuestionChoice
This is incorrect. This is a gram-negative anaerobic rod that typically affects those with a weakened immune system: the elderly, alcoholics and diabetics. It usually presents with the classic 'red currant jelly' sputum. It is a less common cause of a lower respiratory tract infection in those with cystic fibrosis than Pseudomonas aeruginosa.
10027599
d
Klebsiella pneumoniae
QuestionChoice
This is incorrect. Although a common cause of pneumonia, it is not the most common in those with cystic fibrosis.
10027598
c
Haemophilus influenzae
Concept
Chapter
2693
5990
Pseudomonas
Topic
148
Microbiology
17917
A 16 year old girl presents to the children's A&E department with her parents. She has a cough productive of green sputum and is feeling generally unwell. Her past medical history includes cystic fibrosis.

On examination of the respiratory system, crackles can be heard bilaterally.

Their blood tests reveal an elevated white blood cell count.

Which of the following is the most likely causative organism?
a