Table will appear on the Web site: Distribution of surgical procedures and frequency of main type of surgery according to age group.

Surgical procedures and main types

Patients < 60 yrs

n = 167

Patients 60 75 yrs

n = 133

Patients > 75 yrs

n = 106

P value

Orthopedic

Hip

Spine

Femur

44 (26%)

14%

34%

34%

33 (25%)

70%

18%

3%

26 (24%)

61%

11%

4%

NS

Thoracic

Lung resection

13 (8%)

61%

19 (14%)

95%

5 (5%)

40%

0.04

Vascular

Abdominal aortic aneurysm

Arterial bypass (aorto-iliac or femoral; femoropopliteal)

12 (7%)

42%

42%

 

23 (17%)

61%

22%

24 (23%)

21%

54%

0.001

Digestive

Colorectal

Gastrointestinal

Esophagectomy

30 (18%)

30%

30%

10%

30 (23%)

40%

17%

13%

39 (37%)

49%

39%

2%

<0.0001

Urinary

Nephrectomy

Cystectomy/Prostatectomy

11 (7%)

45%

3%

20 (15%)

15%

40%

10 (9%)

60%

10%

NS

E.N.T.

7 (4%)

6 (4%)

2 (2%)

NS

Obstetric/Gynecologic

31 (18%)

0

0

<0.0001

Multiple trauma

19 (11%)

2 (1%)

0

<0.0001

Table will appear on the Web site. Main diagnostic categories leading to ICU admission*.

Diagnosis

Patients < 60 yr

n, (%)

Patients 60 - 75 yr

n, (%)

Patients > 75 yr n, (%)

Total

n, (%)

Respiratory insufficiency after surgery

42, (25.0)

44, (33.0)

35, (33.0)

121, (30.0)

ARDS

7, (4.0)

9, (7.0)

0

16, (4.0)

Aspiration pneumonia

4, (2.0)

0

2, (2.0)

6, (1.5)

Trauma

44, (26.0)

4, (3.0)

3, (3.0)

51, (12.5)

Peritonitis

10, (6.0)

15, (11.0)

14, (13.0)

39, (10.0)

Bacterial pneumonia

2, (1.0)

5, (4.0)

2, (2.0)

9, (2.0)

Cholangitis

1 (0.5)

0

5, (5.0)

6, (1.5)

Other infections

1 (0.5)

2, (1.5)

1, (1.0)

4, (1.0)

Hemorrhagic shock or syndrome

13, (8.0)

12, (9.0)

6, (6.0)

31, (7.5)

GI bleeding

3, (2.0)

5, (4.0)

8, (7.5)

16, (4.0)

Undetermined shock

5, (3.0)

10, (7.5)

10, (9.0)

25, (6.0)

Anaphylactic shock

2, (1.0)

2, (1.5)

0

4, (1.0)

Cardiogenic shock or heart failure

3, (2.0%)

10, (7.5)

7, (6.5)

20, (5.0)

Other cardiac conditions

3, (2.0)

1, (1.0)

4, (4.0)

8, (2.0)

Renal diseases

5, (3.0)

3, (2.0)

2, (2.0)

10, (2.5)

Pyelonephritis

2, (1.0)

1, (1.0)

1, (1.0)

4, (1.0)

Neurologic disorders

6, (4.0)

3, (2.0)

1, (1.0)

10, (2.5)

GI perforation/obstruction

4, (2.0)

1, (1.0)

3, (3.0)

8, (2.0)

Pancreatitis

3, (2.0)

4, (3.0)

0

7, (2.0)

Table 3 (cont.)

 

 

 

 

Stab wound

5, (3.0)

1, (1.0)

0

6, (1 .5)

Miscellaneous

2, (1)

1, (1.0)

2, (2.0)

5, (1.0=

 

* Diagnoses were unevenly distributed between the 3 groups of patients (p<0.005).


Table will appear on the Web site: Distribution of microorganisms between older and younger infected patients*.

Microorganisms

Patients < 60 yr

54 infections

63 microorganisms

Patients 60 -75 yr

98 infections

114 microorganisms

Patients > 75 yr

40 infections

53 microorganisms

Gram positive cocci- species

24 (38.0%)

31 (27.0%)

15 (28.0%)

Staphylococcus aureus

- number of methicillin-resistant

6 (10%)

2

14 (12.0%)

10

6 (11.0%)

3

Coagulase-negative staphylococci

11

7

5

Enterococcus species

6

4

3

Other Gram positive cocci sp.

1

6

1

Gram-negative bacilli species

36 (57%)

70 (61.0%)

32 (60.0%)

Escherichia coli

7 (11.0%)

16 (14.0%)

10 (19.0%)

Klebsiella sp.

3

5

3

Proteus mirabilis

1

7

1

Enterobacter cloacae

3

2

2

Other Enterobacteriaceae

- number of ESBL Enterobacteriaceae

7

3

6

2

6

2

Pseudomonas aeruginosa

- number of ticarcillin-resistant

9 (14.0%)

5

17 (15.0%)

9

8 (15.0%)

3

Acinetobacter baumanii

- number of ticarcillin-resistant

0

-

7

6

0

-

Other Gram-negative bacilli.

6

10

2

Anaerobic pathogens

0

3

0

Candida spp

4 (6.0%)

10 (9.0%)

6 (11.0%)

* No significant differences in the frequency distribution of the various microorganisms isolated, or emergence of resistant bacteria were observed between the three groups. ESBL: extended-spectrum b-lactamase;