Explain the anatomical and or physiological changes which may occur and; Give details of any medication and or therapeutic intervention which may be required.

Elizabeth is an 80-year old woman, admitted to hospital due to hip fracture following a fall at home. She was due for surgery which was postponed following a spike in her temperature. She is now finding it difficult to breathe and she coughs up thick yellow-green phlegm. She has become increasingly unwell, sweating profusely and shivering. The doctors suspect that she has acquired pneumonia.

Describe the condition;
Explain the anatomical and or physiological changes which may occur and;
Give details of any medication and or therapeutic intervention which may be required.