This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
NOT a feature of ventilator associated pneumonia 
Select and explain. 
A. Fever, B. Tachycardia, C. New shadows on chest X-ray, D. Leucocytosis
B: Tachycardia
Answer: B: Tachycardia 
Explanation: (B) Tachycardia> Tachycardia: Clinical criteria for diagnosis of ventilator pneumonia include (fever, Leucotyosis, New changing radiographic infiltrates, development of purulent secretions change in oxygen requirement/ventilator settings, which have high sensitivity but low specificity.