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Table 1 Baseline characteristics, imaging results, and outcome measures of patients having CAP diagnosis with initial normal CRx.

From: Early recognition of the 2009 pandemic influenza A (H1N1) pneumonia by chest ultrasound

Pts Sex, Age Chronic illness Clinical features Chest US CT§ (H1N1) LOS/ICU^ Final diagnosis
  M/F, yrs   Onset* Rales SaO2# T(°C) CURB65    test days/ICU  
Case 1 M, 60 Diabetes 2 days No 90% 38.2 2 Neg Pos + 21/ICU VP
Case 2 F, 50 Hypertens.
Asthma
10 days No 93% 39.0 1 IS   + 7 VP
Case 3 F, 55 - 3 days No 96% 38.5 1 IS, PLA Pos + 8 SBP
Case 4 F, 31 Hypothiroid. 1 days Yes 99% 38.0 1 IS, PLA   + - VP
Case 5 F, 48 - 3 days Yes 95% 39.1 1 IS, PLA   + 16 VP
Case 6 F, 85 Hypertens.
Alzheimer
15 days Yes 93% 36.7 3 IS, AC   - 15 PBP
Case 7 M, 34 - 5 days No 88% 38.4 1 IS, PLA Pos + 20 VP
Case 8 M, 73 Hypertens. 4 days Yes 90% 38.0 3 IS, PE Pos - 40/ICU PBP
Case 9 M, 30 - 3 days No 88% 38.5 1 IS, PE Pos - 10/ICU PBP
Case 10 M, 44 - 6 days No 90% 38.2 1 IS, AC, PE Pos - 4/ICU PBP
Case 11 M, 34 - 3 days No 87% 39.0 1 IS, PLA, AC, PE Pos - 18/ICU PBP
Case 12 F, 60 - 3 days No 94% 38.5 1 IS, PLA, AC   + 6 VP
Case 13 M, 80 COPD 3 days No 88% 39.0 3 IS Pos + 10 VP
Case 14 M, 37 - 2 days Yes 95% 39.2 1 IS   + 4 VP
Case 15 F, 62 - 2 days No 92% 38.7 2 IS, PLA, AC   + 7 VP
Case 16 M, 19 - 3 days No 94% 38.8 1 IS   + 3 VP
  1. CAP, community-acquired pneumonia; CRx, chest radiography; AC, alveolar consolidation; COPD, chronic obstructive pulmonary disease; IS, interstitial syndrome; PLAs, pleural-line abnormalities; PBP, primary bacterial pneumonia; PE, pleural effusion; SBP, secondary bacterial pneumonia; T, body external temperature; VP, viral pneumonia. aOnset of symptoms before admission to the Emergency Department; bCT scan showed the prevalent pattern of peripheral patch areas of ground-glass opacities; cLOS/ICU, complete hospital stay length and intensive care unit (ICU) admission; dSaO2, initial arterial oxygen saturation on room air.