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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.