Table 1. Stroke-Associated Pneumonia Criteria.

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Requirement	Findings
At least one of the following	Altered mental status without any other recognized reason in age≥ 70
	Leukopenia (<4000 WBC/mm3) or leukocytosis(>12000 WBC/mm3)
	Fever(>38°C) without any other reason
At least two of the following	New onset or worsening cough, dyspnea, or tachypnea (respiratory rate>25/min)
	New onset of purulent, change in character of sputum over a 24-h period, increase respiratory secretions, or increase suctioning requirements
	Rales, crackles, or bronchial breath sounds
	Worsening gas exchange (e.g., O₂/FIO₂≤240), increased oxygen requirements)
And ≥2 serial chest radiographs with at least one of the following	New or progressive and persistent infiltrate, consolidation, or cavitation
	In patients without underlying pulmonary or cardiac disease, one definitive chest radiograph is acceptable