Table 3.

Criteria for clinical stability described in clinical practice guidelines.

ATS 2001 criteria	ATS/IDSA 2007 criteria
Improved symptoms of pneumonia such as cough and shortness of breath	Temperature ≤ 37.8 °C Heart rate ≤ 100 beats/min
Lack of fever for at least 8 h	Respiratory rate ≤ 24 breaths/min
Improving leukocytosis (↓ at least 10% from the prior day)	Systolic blood pressure ≥ 90 mm Hg SatO2 ≥ 90% or PaO2 ≥60 mm Hg on room air Normal mental status

SatO₂: oxygen saturation; PaO₂: partial pressure of oxygen in arterial blood gas.